Semtech EB-GS6042 Evaluation Board User guide

Brand
Semtech
Model
EB-GS6042 Evaluation Board
Type
User guide

Semtech EB-GS6042 Evaluation Board is designed to accelerate the evaluation process of the GS6042 Adaptive Cable Equalizer. It is used to evaluate and configure the GS6042, a high-speed BiCMOS integrated circuit designed to equalize and restore signals received over 75Ω coaxial cable. The board features one 75Ω single-ended input through a BNC connector (SDI/J1), and one pair of 100Ω differential outputs (DDO/J2, DDO/J3) through SMA connectors.

Semtech EB-GS6042 Evaluation Board is designed to accelerate the evaluation process of the GS6042 Adaptive Cable Equalizer. It is used to evaluate and configure the GS6042, a high-speed BiCMOS integrated circuit designed to equalize and restore signals received over 75Ω coaxial cable. The board features one 75Ω single-ended input through a BNC connector (SDI/J1), and one pair of 100Ω differential outputs (DDO/J2, DDO/J3) through SMA connectors.

EB-GS6042
Evaluation Board User Guide
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GS6042
Evaluation Board User Guide Rev.0
PDS-060158 October 2014
www.semtech.com
GS6042
Evaluation Board User Guide Rev.0
PDS-060158 October 2014
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Version ECO Date Changes and / or Modifications
0 016079 October 2013 New document
1 022602 October 2014 Applied new template and reduced file size
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Evaluation Board User Guide Rev.0
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Contents
1. Evaluation Board User Guide.......................................................................................................................5
1.1 SDI Inputs and Outputs ....................................................................................................................5
1.2 Power ......................................................................................................................................................5
1.3 Switch Settings ....................................................................................................................................6
1.4 Jumper Settings ..................................................................................................................................6
1.4.1 OP_CTL Settings .....................................................................................................................7
1.4.2 Squelch Adjust (SQ_ADJ) Configuration........................................................................7
1.5 LED Indicator ........................................................................................................................................7
2. Schematic ...........................................................................................................................................................8
3. Board Layout .....................................................................................................................................................9
4. Bill of Materials............................................................................................................................................... 10
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Evaluation Board User Guide Rev.0
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General Description
The GS6042 evaluation package is designed to accelerate the evaluation process of the
GS6042 Adaptive Cable Equalizer.
It is strongly recommended to read the GS6042 Data Sheet (Doc ID: PDS-060055) before
using this evaluation kit.
Evaluation Kit Contents
• Semtech EB-GS6042 Evaluation Board
• CD containing GS6042 collateral
Overview
The purpose of the EB-GS6042 Evaluation Board is to evaluate the GS6042
6G UHD-SDI/3G/HD/SD Adaptive Cable Equalizer. This device is designed to support
SMPTE ST 424, SMPTE ST 292 and SMPTE ST 259 serial digital video signals standards,
and it is optimized for performance at 270Mb/s, 1.485Gb/s, 2.97Gb/s, and 5.94Gb/s data
rates.
EB-GS6042 Functional Block Diagram
SW1 GS6042
Inputs
BNC
GS6042
IRL
GS6042 Power
Supply Connection
SMA
SMA
DDO
Swing and
De-emphasis
Selection
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1. Evaluation Board User Guide
Figure 1-1 shows the inputs, outputs and power connections for the EB-GS6042.
Figure 1-1: GS6042 Evaluation Board (EB-GS6042)
1.1 SDI Inputs and Outputs
The GS6042 is a high-speed BiCMOS integrated circuit designed to equalize and restore
signals received over 75Ω coaxial cable. The EB-GS6042 is the evaluation board for the
GS6042. The EB-GS6042 features one 75Ω single-ended input through a BNC connector
(SDI/J1), and one pair of 100Ω differential outputs (DDO/J2, DDO
/J3) through SMA
connectors.
1.2 Power
The EB-GS6042 features four power posts (5V, 3V3, GND, VCCO). By default, the GS6042
can be powered with a single power supply connected to 5V. Alternatively, the GS6042
outputs can be powered using a second power supply connected to VCCO. The power
configuration jumper VCCO_SEL must be configured accordingly. Refer to the GS6042
Data Sheet (Doc ID: PDS-060055), section 4.3, for more information.
SDI
(J1)
DDO
(J2)
DDO
(J3)
Control Switch
(SW1)
Swing and
De-emphasis
Selection (J4)
CD LED
(D1)
5V
(TP2)
3V3
(TP4)
GND
(TP5)
VCCO
(TP3)
VCC_O SEL
Jumper (JP3)
SQ_ADJ
(TP1)
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When the outputs are powered separately, the voltage supplied to VCCO can be set
between 1.2V and 3.3V.
To bypass the on-board regulator and supply 3V3 directly to the GS6042 via TP4, R21
needs to be removed.
Note: Do not apply 5V (TP2) and 3V3 (TP4) at the same time.
1.3 Switch Settings
A three-point dip switch (SW1) provides the GS6042’s input selection. The switch
positions are marked on the silkscreen, and are described in Table 1-1 below:
By default the SLEEP switch is not enabled, and Auto-Sleep is enabled. In Auto-Sleep
mode, if no signal is detected the GS6042 enters sleep mode. To enable the SLEEP
switch, remove resistor R18 and populate resistor R19.
1.4 Jumper Settings
The jumpers on the EB-GS6042 board are described in the following tables:
Table 1-1: SW1 Settings
Switch Label Switch Position Description
GAIN_SEL
Gain Select on, 6dB gain
Gain Select off, no change in gain
(default)
BYPASS
Bypass on (No equalization occurs)
Bypass off (default)
SLEEP
Device powered-down except for the
Carrier Detect function
Sleep off
GAIN_SEL1
GAIN_SEL1
BYPASS2
BYPASS2
SLEEP3
SLEEP3
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1.4.1 OP_CTL Settings
The output control settings are described in Table 1-3 below. Refer to the GS6042 Data
Sheet (Doc ID: PDS-060055), section 4.7, for more information.
1.4.2 Squelch Adjust (SQ_ADJ) Configuration
The SQ_ADJ can be adjusted by connecting an external adjustable 0V – 3.3V power
supply to TP1. This input adjusts the threshold of the CD
pin. When the SQ_ADJ input is
0V, all cable lengths will be equalized. When the SQ_ADJ input is 3.3V, there will be no
equalization regardless of the cable length. Please refer to the GS6042 Data Sheet for
more details on carrier detect and squelch adjust.
1.5 LED Indicator
D1 is the Carrier Detect LED for the GS6042. D1 is on when a carrier is detected and stays
off otherwise.
Table 1-2: VCCO_SEL (JP3) Jumper Settings
Label Connection Description
1–2 (default) Shared supply mode
2–3 (EXT) Output uses a separate external supply
Table 1-3: OP_CTL Input Settings
Level Swing De-emphasis Mute Voltage
Shunt
Position (J4)
0 850mV Off N 0.000 - 0.083 1–2
1 850mV 2dB N 0.234 - 0.394 3–4
2 850mV 4dB N 0.545 - 0.704 5–6
3 850mV 6dB N 0.856 - 1.015 7–8
4 425mV Off N 1.166 - 1.333 9–10
5 425mV 2dB N 1.484 - 1.644 11–12
6 425mV 4dB N 1.795 - 1.954 13–14
7 425mV 6dB N 2.106 - 2.265 15–16
8 425mV N/A Y 2.416 - 2.500 17–18
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2. Schematic
Figure 2-1: GS6042 Schematic
NP
ONLY POPULATE ONE
R18 POPULATED BY DEFAULT
POWER SUPPLIES
NP
7
ONLY POPULATE ONE
R2 POPULATED BY DEFAULT
8564310
LEVEL POSITION
2
THHDR2X9
75Ω
TBD
470nF
GND
BLACK
ORANGE
VCC_O
YELLOW
0Ω
10µF100nF
6.2nH
1µF
1µF
VCC_A
0Ω
SMA
75Ω
SQ_ADJ
WHITE
1kΩ 1kΩ0Ω
0Ω
1kΩ
BNCRA
VCC_A
GS6042
SMA
VCC_O
VCC_A
VCC_A
VCC_O
10nF
10nF
4.7µF
4.7µF
37.4Ω
2.61kΩ
SWDIP3
221Ω
100nF
10µF
J4
R7
R5
L2
R18
C5
TP5
TP4TP3
C14
C15
R1
R2
R19
R15R14R13R10R6R4
SW1
TP1
J3
J2
J1
L1
R3
C4
C3
U1
C7
C8
C9
C10
R8
R16
R17
R11
JP3
C13
C12
SLEEP_SW
CDb
GAIN_SEL
BYPASS
SLEEP_SW
OP_CTL
BYPASS
OP_CTL
GAIN_SEL
SLEEP
4
6
4
15
1
5
14
6
87
5
3
2
18 17
16 15
14 13
12 11
10
1
4
5
6
3
2
1
3
2
1
13
8
2
3
9
11
10
7
3
2
1
2
11
2
12
TAB
16
9
TAB
VCC_A
CDSLEEP
VCC_OVEE_O
DDO
DDO
OP_CTL
SQ_ADJ
BYPASS
AGC
AGC
GAIN_SEL
SDI
SDI
VEE_A
3
2
1
9
87
65
43
21
18 17
16 15
14 13
12 11
10
ON
1
RA
CD
1kΩ1kΩ1kΩ1kΩ1kΩ
3
CD
C1
100pF
3V3
VCC_A
10k
Ω
VCC_A
82
Ω
GREEN
0
Ω
SN74AUP1G07
100nF
R12
R9
D1
R20
U2
C2
12
2
3
1
5
4
A
Y
VCC
GND
NC
VCC_A
10k
Ω
RED
SC4216H
ADJ
100nF
100nF
5V
10µF
0
Ω
56k
Ω
U3
R21
R22
R23
TP2
C6
C11
C16
27
8
1
4
5
TAB
36
TAB
GND
NC_5
VO
FB
NC_4
EN
VIN
NC_1
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3. Board Layout
Figure 3-1: Layer 1 (Top Layer) and Top Silkscreen Figure 3-2: Layer 2 (Ground)
Figure 3-3: Layer 3 (Power)
Figure 3-4: Layer 4 (Bottom)
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4. Bill of Materials
Table 4-1: Bill of Materials
Quantity Reference Description
1 C1 Capacitor, ceramic; 100pF 50V 5% C0G 0402
2 C9, C10 Capacitor, ceramic; 4.7μF 6.3V 20% X5R 0402
3 C11, C13, C15 Capacitor, tantalum; 10μF 10V 10% 3216/1206
4 C6, C12, C14, C16 Capacitor, ceramic; 0.1μF 16V 10% X7R 0603
1 C2 Capacitor, ceramic; 0.1μF 16V 10% X7R 0402
2 C3, C4 Capacitor, ceramic; 1.0μF 10V 10% X5R 0402
1 C5 Capacitor, ceramic; 0.47μF 10V 10% X5R 0402
2 C7, C8 Capacitor, ceramic; 10000pF 16V 10% X7R 0402
1 D1 LED 1.6X0.8mm 568nm Green CLR SMD
1 J1 3G/HD RA BNC C-SX-090
2 J2, J3 SMA Edge Mount Short Signal Pin
1 J4 Connector; Header 2mm dual STR 18 POS
1 JP3 Connector; Header 2mm dual STR 3 POS
1 L1 Inductor; 6.2nH 300mA 0402
8
R4, R6, R10, R11,
R13-R16
Resistor; 1.00kΩ 1/16W 1% 0402 SMD
1 R12 Resistor; 82kΩ 1/16W 0.5% 0402 SMD
1 R17 Resistor; 2.61kΩ 1/10W 1% 0402 SMD
3 R2, R9, R18 Resistor; 0kΩ 1/10W 5% 0402 SMD
1 R20 Resistor; 10.0kΩ 1/16W 1% 0402 SMD
1 R21, L2 Resistor; 0.0Ω 1/8W 5% 0805 SMD
1 R22 Resistor; 56.0kΩ 1/10W 1% 0402 SMD
1 R23 Resistor; 10.0kΩ 1/16W 1% 0402 SMD
2 R3, R5 Resistor; 75.0kΩ 1/16W 1% 0402 SMD
1 R7 Resistor; 221kΩ 1/16W 1% 0402 SMD
1 R8 Resistor; 37.4kΩ 1/16W 1% 0402 SMD
1 SW1 Switch 3 POS SMD
1TP1Test Point WHITE
1TP2Test Point RED
1 TP3 Test Point YELLOW
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1 TP4 Test Point ORANGE
1TP5Test Point BLACK
1 U1
GS6042 Extended Reach 6G Adaptive Cable
Equalizer
1 U2 IC BUFF/DVR Low Power N-INV SOT353
1 U3
Semtech SC4216H very low input dropout 3A
regulator
Do Not Populate
2R1, R19Resistor; 0Ω 1/10W 5% 0402 SMD
Table 4-1: Bill of Materials (Continued)
Quantity Reference Description
© Semtech 2014
All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The
information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable
and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication
thereof does not convey nor imply any license under patent or other industrial or intellectual property rights. Semtech assumes
no responsibility or liability whatsoever for any failure or unexpected operation resulting from misuse, neglect improper
installation, repair or improper handling or unusual physical or electrical stress including, but not limited to, exposure to
parameters beyond the specified maximum ratings or operation outside the specified range.
SEMTECH PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN
LIFE-SUPPORT APPLICATIONS, DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF SEMTECH PRODUCTS
IN SUCH APPLICATIONS IS UNDERSTOOD TO BE UNDERTAKEN SOLELY AT THE CUSTOMER’S OWN RISK. Should a customer
purchase or use Semtech products for any such unauthorized application, the customer shall indemnify and hold Semtech and
its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees
which could arise.
Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners
.
DOCUMENT IDENTIFICATION
EVALUATION BOARD USER GUIDE
Information relating to this product and the application or design described
herein is believed to be reliable, however such information is provided as a guide
only and Semtech assumes no liability for any errors in this document, or for the
application or design described herein. Semtech reserves the right to make
changes to the product or this document at any time without notice.
GS6042
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Contact Information
Semtech Corporation
200 Flynn Road, Camarillo, CA 93012
Phone: (805) 498-2111, Fax: (805) 498-3804
www.semtech.com
CAUTION
ELECTROSTATIC SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A
STATIC-FREE WORKSTATION
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Semtech EB-GS6042 Evaluation Board User guide

Brand
Semtech
Model
EB-GS6042 Evaluation Board
Type
User guide

Semtech EB-GS6042 Evaluation Board is designed to accelerate the evaluation process of the GS6042 Adaptive Cable Equalizer. It is used to evaluate and configure the GS6042, a high-speed BiCMOS integrated circuit designed to equalize and restore signals received over 75Ω coaxial cable. The board features one 75Ω single-ended input through a BNC connector (SDI/J1), and one pair of 100Ω differential outputs (DDO/J2, DDO/J3) through SMA connectors.

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