NXP OL2300NHN User guide

UM10473

OL2300 Demo board user manual

Rev. 01 — 29 August 2011 User manual

Document information

Info Content

Keywords OL2300, User manual, UHF, RF, transmitter, fractional-N-PLL

Abstract This user manual describes the architecture and functionalities of the

OL2300 UHF transmitter evaluation board.

User manual Rev. 01. — 29 August 2011 2 of 19

Contact information

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: [email protected]

NXP Semiconductors

UM10473

OL2300 Demo board user manual

Revision history

Rev Date Description

v.1 20110829 initial version

User manual Rev. 01. — 29 August 2011 3 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

1. Introduction

OL2300 is a UHF ASK/FSK fractional-N transmitter IC. The device provides a fully

integrated fractional-N PLL frequency synthesizer and a power amplifier to drive an

external antenna.

The purpose of this manual is to provide an introduction to the evaluation board named

"LID1204", which is intended to evaluate the internal functional blocks of the OL2300..

The evaluation board is equipped with a serial RS232 interface to connect the board to a

PC. A Windows GUI provides a means to access the different special function registers of

OL2300. The onboard controller PCF7941 acts as a logical interface between RS232 and

OL2300 and it is programmed accordingly.

The power amplifier output of OL2300 is matched to 50  and can be directly connected

to appropriate measurement devices.

The evaluation board is available in two versions; one for the 315 MHz and one for the

434 MHz ISM frequency bands. Each version has a different mounting for the crystal and

different matching network of the 50  SMA connector output.

An 868 MHz version can be created by using the 434 MHz board, and changing some of

the component values (see Figure 1

).

Section 2 “

Evaluation board schematic” gives details of component placement, usage and

typical measurement results.

User manual Rev. 01. — 29 August 2011 4 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

2. Evaluation board schematic

The schematic of the evaluation board is shown in Figure 1.

The 125 kHz transponder antenna of the PCF7941 and the three switches are not

mounted.

The transmitter section of the board is isolated by removing the following six jumpers:

TX_SUPPLY, EN, SCK, SDIO, CKOUT, SDO. The jumpers allow the following:

• evaluation of the onboard OL2300 IC in combination with another µC

• monitoring of the SPI connection

• current measurements

The crystal which is connected to the oscillator pins of OL2300 is an NDK NX5032GA. A

frequency of 13.28963 MHz is chosen to cover the 434 MHz band as well as the 868 MHz

and the 915 MHz bands. However, for the 868 MHz and 915 MHz band, the matching

network must be adapted accordingly.

In the 315 MHz version, the crystal frequency is 18.37036 MHz. The reference clock

frequency is divided by two to keep the PLL frequency below the specified maximum of

920 MHz. To achieve this frequency limitation, the internal XTAL clock divider is set to

XOSL = 1.

The UHF matching network is adapted to transform the 50  terminated output

impedance of connector X2 to the optimal impedance of the RF power amplifier. This is

done in a way to attain the highest possible output power in power mode III (PAM=3) with

a harmonic suppression of at least 50 dBc.

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User manual Rev. 01. — 29 August 2011 5 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

Fig 1. Schematic of OL2300 RF evaluation board

aaa-000050

User manual Rev. 01. — 29 August 2011 6 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

3. Component placement

Figure 2 shows the component layout on the evaluation board as viewed from the top

side.

Fig 2. Component layout - evaluation board top side

55

aaa-000051

45

User manual Rev. 01. — 29 August 2011 7 of 19

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UM10473

OL2300 Demo board user manual

4. Usage

Connect a supply voltage (2.1 V up to 3.6 V) to the supply connector, according to the

indications on the board layout. For safety reasons, the maximum current is limited to

50 mA.

When a serial connection between the evaluation board and a PC is established, the

Windows software 'Frantic.exe' can be run. On start-up, the program initializes the special

function register set of OL2300 using the first available COM port. The communication

port used by the progam is shown in the left lower corner of the GUI. Each interaction with

the Windows program is immediately transferred to reflect the changes in the register set

of OL2300. The Windows program provides context-sensitive help.

A 50  spectrum analyzer is directly connected to X2. Ensure that the analyzer input

attenuator setting matches the RF output power level of the evaluation board using a

starting reference value of +20 dBm.

User manual Rev. 01. — 29 August 2011 8 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

5. Measurement results

The evaluation board measurements are made under the following conditions, unless

otherwise stated:

• Supply voltage V

CC

= 2.7 V

• Power mode PAM = 3 with CASC = 0 and ENRAD = 0

• Output amplitude AMH = 15

• Temperature T = room temperature

• Carrier frequency f

C

= 433.92 MHz

Detailed measurements have been performed for the 434 MHz version of the evaluation

board only.

Measurement instruments:

• Spectrum Analyzer: Rohde & Schwarz FSP7

• Multimeter: Agilent 34401A

The following results indicate typical values only and vary as a result of device spreads,

component tolerances or temperature changes.

5.1 General

• Center frequency: 315 MHz

• Data rate: 4.8 kbps Manchester coded (symbol rate = 9600 chips/s)

• Modulation type: FSK

• Frequency deviation: 4.8 kHz

Table 1. Typical performance

Symbol Parameter Conditions Version (MHz) Unit

315 434 868

I

pd

power-down current - <10 <10 <10 nA

I

CC

supply current XTAL on 250 250 250 A

PLL locked 2.1 2.7 2.7 mA

PA enabled 12.1 13.5 13 mA

P

o

output power - 9.8 9.3 8.5 dBm

P

sp

spurious output power reference 47 47 42 dBc

harmonic 54 52 46 dBc

User manual Rev. 01. — 29 August 2011 9 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

5.2 Output power (P

o

)

5.2.1 P

o

= f(AMH, PAM)

The data provided in Table 2 is based on the power of the carrier when measured during

CW operation.

Figure 4 is based on measurement data provided in Table 2

Fig 3. Carrier phase noise

aaa-000052

Frequency Offset (Hz)

10

3

10

7

10

6

10

4

10

5

-100

-110

-90

-80

-120

Phase Noise

(dBc/Hz)

Table 2. Output power [f(AMH, PAM)]

AMH P

o

= (dBm) I

CC

(mA)

PAM = 0 PAM = 1 PAM = 2 PAM = 3 PAM = 0 PAM = 1 PAM = 2 PAM = 3

0 75 75 75 75 2.62 2.62 2.62 2.62

1 21.97 19.40 15.20 10.30 2.86 2.94 3.16 3.66

2 15.70 13.14 8.98 4.10 3.10 3.27 3.70 4.71

3 12.14 9.66 5.58 0.76 3.35 3.60 4.24 5.71

4 9.32 7.05 3.12 1.60 3.60 3.91 4.74 6.66

5 7.55 5.25 1.30 3.35 3.84 4.22 5.25 7.60

6 6.27 3.87 0.18 4.77 4.03 4.49 5.73 8.49

7 4.93 2.56 1.45 5.84 4.28 4.81 6.23 9.29

8 3.55 1.30 2.54 6.64 4.52 5.12 6.71 9.99

9 2.80 0.50 3.41 7.27 4.71 5.37 7.15 10.62

10 2.06 0.30 4.24 7.79 4.89 5.63 7.59 11.21

11 1.38 1 4.95 8.20 5.09 5.90 8.01 11.72

12 0.52 1.79 5.63 8.54 5.32 6.19 8.44 12.20

13 0.01 2.34 6.17 8.82 5.51 6.44 8.83 12.63

14 0.41 2.80 6.65 9.06 5.65 6.64 9.18 13.03

15 0.93 3.32 7.09 9.27 5.84 6.90 9.54 13.41

User manual Rev. 01. — 29 August 2011 10 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

5.2.2 P

o

= f (V

CC

, CASC, ENRAD)

Figure 5 is based on measurement data provided in Table 3

Plot (1) represents output power PAM = 3

Plot (2) represents output power PAM = 2

Plot (3) represents output power PAM = 1

Plot (4) represents output power PAM = 0

Plot (5) represents efficiency PAM = 3

Plot (6) represents efficiency PAM = 2

Plot (7) represents efficiency PAM = 1

Plot (8) represents efficiency PAM = 0

Fig 4. Output power as a function of AMH and PAM

AMH

0 1512693

aaa-000053

10

5

0

-5

-25

-20

-15

-10

32

27

22

17

2

7

12

Output Power

(dBm)

η

(%)

(5)

(1)

(2)

(4)

(7)

(8)

(6)

(3)

Table 3. Output power [f (VCC, CASC, ENRAD)]

V

CC

(V) CASC = 0, ENRAD = 0 CASC = 1, ENRAD = 1

P

o

= (dBm) I

CC

(mA) P

o

= (dBm) I

CC

(mA)

2.1 6.86 10.81 6.42 10.01

2.2 7.32 11.30 6.74 10.27

2.3 7.76 11.76 7.04 10.51

2.4 8.17 12.19 7.31 10.74

2.5 8.55 12.61 7.57 10.96

2.6 8.91 13.02 7.80 11.17

2.7 9.25 13.41 8.02 11.37

2.8 9.58 13.78 8.21 11.56

2.9 9.88 14.15 8.39 11.74

3.0 10.17 14.51 8.54 11.90

3.1 10.43 14.82 8.68 12.06

3.2 10.68 15.11 8.80 12.20

3.3 10.91 15.39 8.90 12.33

3.4 11.14 15.65 8.98 12.45

3.5 11.34 15.91 9.06 12.56

3.6 11.54 16.16 9.11 12.66

User manual Rev. 01. — 29 August 2011 11 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

5.3 Output Spectrum

The most significant spurious RF outputs of the OL2300 as measured at the RF output

connector are shown in Figure 6

to Figure 9. The spectrum analyzer is connected directly

to the evaluation board. The spectrum analyzer settings can be seen. Measurements are

made under conditions: CW, VCC = 2.7 V, AMH = 15.

5.3.1 315 MHz

Plot (1) is efficiency CASC = 0, ENRAD = 0

Plot (2) is efficiency CASC = 1, ENRAD = 1

Plot (3) is output power CASC = 0, ENRAD = 0

Plot (4) is output power CASC = 1, ENRAD = 1

Fig 5. Output as a function of supply voltage and flags CASC and ENRAD

aaa-000054

Supply Voltage (V)

2.0 3.63.22.82.4

8

10

12

Output Power

(dBm)

6

20

24

28

η

(%)

16

(2)

(1)

(4)

(3)

Fig 6. Harmonic spurious signals

B

*

3

R

B

3

0

k

z

V

B

1

S

1

5

s

*

1

P

K

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B

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e

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p

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n

4

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H

z

/

-

9

0

-

8

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-

7

0

-

6

0

-

5

0

-

4

0

-

3

0

-

2

0

-

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0

1

0

S

1

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o

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a

r

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T

1

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2

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1

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8

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3

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5

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z

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e

l

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a

3

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T

1

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4

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d

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6

3

0

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0

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H

z

4

t

4

[

T

1

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-

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9

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B

9

4

5

.

0

aaa-000055

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LGS

MHz

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WT m

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MHz

GHzer

WP

GHz

elDa

t

User manual Rev. 01. — 29 August 2011 12 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

5.3.2 434 MHz

Fig 7. Reference spurious signals

aaa-000056

R

e

f

1

0

d

B

A

t

2

0

d

B

*

A

S

3

R

B

3

k

V

B

1

0

k

S

2

.

5

s

C

e

n

t

3

1

5

M

H

z

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p

a

n

2

0

M

H

z

2

0

z

/

*

1

P

K

A

V

G

-

9

0

-

8

0

-

7

0

-

6

0

-

5

0

-

4

0

-

3

0

-

2

0

-

1

0

1

0

S

W

P

1

0

o

f

1

0

1

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a

r

k

e

r

1

[

T

1

]

1

0

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2

6

d

B

m

3

1

5

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0

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z

2

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e

l

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a

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T

1

]

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6

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8

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7

5

0

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z

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e

l

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a

3

[

T

1

]

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3

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2

d

B

1

8

.

3

7

5

0

z

m

W

WT

Hz

MH

BD

L

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MH

er

t

Fig 8. Harmonic spurious signals

aaa-000057

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e

f

1

0

d

B

A

t

2

0

d

B

*

B

3

R

B

k

H

z

V

B

1

S

W

T

1

5

s

C

e

n

t

e

r

2

.

1

G

S

p

a

n

4

H

z

4

0

H

z

/

*

1

P

K

A

V

G

S

-

9

0

-

8

0

-

7

0

-

6

0

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5

0

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4

0

-

3

0

-

2

0

-

1

0

1

0

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W

P

1

0

o

f

1

0

1

a

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k

e

r

1

[

T

1

]

9

.

9

0

d

B

4

3

4

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0

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z

2

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e

l

t

a

2

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T

1

]

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5

1

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8

d

B

4

3

4

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H

z

3

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l

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3

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1

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8

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4

7

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8

6

8

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a

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1

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6

2

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1

5

d

B

1

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7

3

5

0

G

H

z

W

WM

m

M

m

Hz

LG

GHz

DB

300

User manual Rev. 01. — 29 August 2011 13 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

Fig 9. Reference spurious signals

aaa-000058

R

e

f

1

0

d

B

t

2

0

d

B

*

A

*

1

P

K

C

e

n

t

4

3

.

9

2

z

S

p

a

n

2

0

z

2

0

z

/

*

3

R

B

k

z

V

B

1

0

k

z

S

2

.

5

s

-

9

0

-

8

0

-

7

0

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6

0

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5

0

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4

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3

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0

1

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1

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1

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User manual Rev. 01. — 29 August 2011 14 of 19

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UM10473

OL2300 Demo board user manual

5.4 ASK modulation

The output of OL2300, when set to ASK modulation, is measured in frequency and time

domain for ASK and Soft-ASK. Figure 10

and Figure 11 show the results.

A modulation frequency of 20 kHz is used for the measurements.

V

CC

= 2.7 V, AMH = 15, AML = 0, RBW = 300 kHz

Fig 10. ASK signal in frequency and time domain, RMP = 0 > t

SA

= 0 s

aaa-000059

R

e

f

1

0

d

B

A

t

2

0

d

B

*

B

3

B

1

k

z

B

3

k

z

6

0

s

C

e

n

t

e

r

4

3

.

9

2

M

H

z

S

p

a

n

6

0

k

H

z

6

0

k

z

/

-

9

0

-

8

0

-

7

0

-

6

0

-

5

0

-

4

0

-

3

0

-

2

0

-

1

0

1

0

A

t

2

0

d

B

*

T

3

B

3

0

k

H

z

*

B

1

H

z

T

1

0

μ

s

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e

f

9

d

B

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n

t

4

3

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9

2

z

1

0

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s

/

0

1

0

2

0

3

0

4

0

5

0

6

0

7

0

8

0

9

0

1

0

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k

e

r

1

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T

1

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1

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9

6

d

B

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8

.

9

1

0

μ

s

2

e

l

t

a

2

[

T

1

]

8

9

0

.

5

8

1

2

.

3

2

0

μ

s

T

R

5

0

m

%

W

m

%

W

WT

R

V

S

H

BD

GLS

GR

A

D

M

H

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SW

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G

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DB

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1

AP

CLRWR

*

1

K

P

AVG

User manual Rev. 01. — 29 August 2011 15 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

Fig 11. Soft-ASK signal in frequency and time domain, RMP = 10 > t

SA

= 11.3 s

e

f

1

0

d

A

t

2

0

d

B

*

3

B

1

k

z

B

3

k

z

6

0

s

e

n

t

4

3

.

9

2

S

p

a

n

6

0

k

z

6

0

k

z

/

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1

K

-

9

0

-

8

0

-

7

0

-

6

0

-

5

0

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4

0

-

3

0

-

2

0

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0

1

0

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t

2

0

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3

0

k

z

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1

0

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s

e

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3

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0

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2

0

3

0

4

0

5

0

6

0

7

0

8

0

9

0

1

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1

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T

1

]

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1

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8

9

d

B

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7

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0

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s

2

a

2

[

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1

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5

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3

6

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s

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User manual Rev. 01. — 29 August 2011 16 of 19

NXP Semiconductors

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OL2300 Demo board user manual

5.5 FSK modulation

The output of OL2300, when set to FSK modulation, is measured in frequency and time

domain for FSK and Soft-FSK. Figure 12

and Figure 13 show the results.

OL2300 was set to a modulation frequency of 20 kHz using an FSK deviation of 20.3 kHz.

V

CC

= 2.7 V, AMH = 15, AML = 0, RBW = 200 kHz.

Fig 12. FSK signal in frequency and time domain, RMP = 0 > t

SF

= 0 s

aaa-000061

e

f

1

0

d

B

t

2

0

d

B

*

3

D

B

1

k

z

B

3

k

z

S

6

0

s

C

e

n

t

4

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User manual Rev. 01. — 29 August 2011 17 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

Fig 13. Soft-FSK signal in frequency and time domain, RMP = 2 > t

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User manual Rev. 01. — 29 August 2011 18 of 19

NXP Semiconductors

UM10473

OL2300 Demo board user manual

6. Legal information

6.1 Definitions

Draft — The document is a draft version only. The content is still under

internal review and subject to formal approval, which may result in

modifications or additions. NXP Semiconductors does not give any

representations or warranties as to the accuracy or completeness of

information included herein and shall have no liability for the consequences of

use of such information.

6.2 Disclaimers

Limited warranty and liability — Information in this document is believed to

be accurate and reliable. However, NXP Semiconductors does not give any

representations or warranties, expressed or implied, as to the accuracy or

completeness of such information and shall have no liability for the

consequences of use of such information.

In no event shall NXP Semiconductors be liable for any indirect, incidental,

punitive, special or consequential damages (including - without limitation - lost

profits, lost savings, business interruption, costs related to the removal or

replacement of any products or rework charges) whether or not such

damages are based on tort (including negligence), warranty, breach of

contract or any other legal theory.

Notwithstanding any damages that customer might incur for any reason

whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards

customer for the products described herein shall be limited in accordance

with the Terms and conditions of commercial sale of NXP Semiconductors.

Right to make changes — NXP Semiconductors reserves the right to make

changes to information published in this document, including without

limitation specifications and product descriptions, at any time and without

notice. This document supersedes and replaces all information supplied prior

to the publication hereof.

Suitability for use — NXP Semiconductors products are not designed,

authorized or warranted to be suitable for use in life support, life-critical or

safety-critical systems or equipment, nor in applications where failure or

malfunction of an NXP Semiconductors product can reasonably be expected

to result in personal injury, death or severe property or environmental

damage. NXP Semiconductors accepts no liability for inclusion and/or use of

NXP Semiconductors products in such equipment or applications and

therefore such inclusion and/or use is at the customer’s own risk.

Applications — Applications that are described herein for any of these

products are for illustrative purposes only. NXP Semiconductors makes no

representation or warranty that such applications will be suitable for the

specified use without further testing or modification.

Customers are responsible for the design and operation of their applications

and products using NXP Semiconductors products, and NXP Semiconductors

accepts no liability for any assistance with applications or customer product

design. It is customer’s sole responsibility to determine whether the NXP

Semiconductors product is suitable and fit for the customer’s applications and

products planned, as well as for the planned application and use of

customer’s third party customer(s). Customers should provide appropriate

design and operating safeguards to minimize the risks associated with their

applications and products.

NXP Semiconductors does not accept any liability related to any default,

damage, costs or problem which is based on any weakness or default in the

customer’s applications or products, or the application or use by customer’s

third party customer(s). Customer is responsible for doing all necessary

testing for the customer’s applications and products using NXP

Semiconductors products in order to avoid a default of the applications and

the products or of the application or use by customer’s third party

customer(s). NXP does not accept any liability in this respect.

Export control — This document as well as the item(s) described herein

may be subject to export control regulations. Export might require a prior

authorization from national authorities.

Evaluation products — This product is provided on an “as is” and “with all

faults” basis for evaluation purposes only. NXP Semiconductors, its affiliates

and their suppliers expressly disclaim all warranties, whether express, implied

or statutory, including but not limited to the implied warranties of

non-infringement, merchantability and fitness for a particular purpose. The

entire risk as to the quality, or arising out of the use or performance, of this

product remains with customer.

In no event shall NXP Semiconductors, its affiliates or their suppliers be liable

to customer for any special, indirect, consequential, punitive or incidental

damages (including without limitation damages for loss of business, business

interruption, loss of use, loss of data or information, and the like) arising out

the use of or inability to use the product, whether or not based on tort

(including negligence), strict liability, breach of contract, breach of warranty or

any other theory, even if advised of the possibility of such damages.

Notwithstanding any damages that customer might incur for any reason

whatsoever (including without limitation, all damages referenced above and

all direct or general damages), the entire liability of NXP Semiconductors, its

affiliates and their suppliers and customer’s exclusive remedy for all of the

foregoing shall be limited to actual damages incurred by customer based on

reasonable reliance up to the greater of the amount actually paid by customer

for the product or five dollars (US$5.00). The foregoing limitations, exclusions

and disclaimers shall apply to the maximum extent permitted by applicable

law, even if any remedy fails of its essential purpose.

6.3 Trademarks

Notice: All referenced brands, product names, service names and trademarks

are the property of their respective owners.

NXP Semiconductors

UM10473

OL2300 Demo board user manual

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddre[email protected]

Date of release: 29 August 2011

Document identifier: UM10473

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section ‘Legal information’.

7. Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Evaluation board schematic. . . . . . . . . . . . . . . 4

3 Component placement . . . . . . . . . . . . . . . . . . . 6

4 Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5 Measurement results. . . . . . . . . . . . . . . . . . . . . 8

5.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5.2 Output power (P

o

). . . . . . . . . . . . . . . . . . . . . . . 9

5.2.1 P

o

= f(AMH, PAM). . . . . . . . . . . . . . . . . . . . . . . 9

5.2.2 P

o

= f (V

CC

, CASC, ENRAD) . . . . . . . . . . . . . 10

5.3 Output Spectrum. . . . . . . . . . . . . . . . . . . . . . . 11

5.3.1 315 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5.3.2 434 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.4 ASK modulation . . . . . . . . . . . . . . . . . . . . . . . 14

5.5 FSK modulation . . . . . . . . . . . . . . . . . . . . . . . 16

6 Legal information. . . . . . . . . . . . . . . . . . . . . . . 18

6.1 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6.2 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6.3 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

NXP OL2300NHN User guide

NXP OL2300NHN User guide

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