Semtech EB-GS6080 Evaluation Board User guide

Brand: Semtech

Model: EB-GS6080 Evaluation Board

Type: User guide

Semtech EB-GS6080 Evaluation Board is designed to accelerate the evaluation process of the GS6080 6G UHD-SDI/3G/HD/SD Cable Driver. The board features one pair of 100Ω differential inputs through SMA connectors and one 75Ω single-ended output through a BNC connector. It allows for input selection using a three-point dip switch and provides a green LED indicator for signal presence. The board can be powered using a USB connection, an external 5V supply, or an external 3.3V supply.

EB-GS6080

Evaluation Board User Guide

1 of 10

Proprietary & Confidential

GS6080

EB-GS6080

Evaluation Board User Guide Rev. 1

PDS-060159 February 2014

www.semtech.com

EB-GS6080

Evaluation Board User Guide Rev. 1

PDS-060159 February 2014

2 of 10

Proprietary & Confidential

www.semtech.com

Contents

1. Evaluation Board User Guide ....................................................................................................................4

1.1 SDI Inputs and Outputs ..................................................................................................................4

1.2 Power ....................................................................................................................................................4

1.3 Switch Settings ..................................................................................................................................5

1.4 Measuring ORL ..................................................................................................................................5

1.5 Signal Presence Indicator ..............................................................................................................6

2. Schematics .......................................................................................................................................................7

3. Board Layout...................................................................................................................................................8

4. Bill of Materials...............................................................................................................................................9

Version ECO Date Changes and / or Modifications

1 018072 February 2014

Modifications to User Guide due to new board

revision. USB connector added to board.

0 016078 October 2013 New document.

EB-GS6080

Evaluation Board User Guide Rev. 1

PDS-060159 February 2014

3 of 10

Proprietary & Confidential

www.semtech.com

General Description

The EB-GS6080 evaluation package is designed to accelerate the evaluation process of

the GS6080 6G UHD-SDI/3G/HD/SD Cable Driver.

It is strongly recommended to read the GS6080 Data Sheet (DocID: PDS-060045) before

using this evaluation kit.

Evaluation Kit Contents

• Semtech EB-GS6080 Evaluation Board

• CD containing GS6080 Collateral

Overview

The purpose of the EB-GS6080 Evaluation Board is to evaluate the GS6080

6G UHD-SDI/3G/HD/SD Cable Driver. This device is designed to support SMPTE ST 2081

(proposed standard), SMPTE ST 424, SMPTE ST 292, and SMPTE ST 259 and it is

optimized for performance at 270Mb/s, 1.485Gb/s, 2.97Gb/s, and 5.94Gb/s.

Block Diagram of the EB-GS6080

BNC

RSET

External Power Supply

or USB

OSP

VCC

GS6080

Control

Switch

SD/HD

ORL

SMA

EQEN

DISABLE

75Ω

750Ω

LED

EB-GS6080

Evaluation Board User Guide Rev. 1

PDS-060159 February 2014

4 of 10

Proprietary & Confidential

www.semtech.com

1. Evaluation Board User Guide

Figure 1-1 shows the inputs, outputs and power connections for the EB-GS6080.

Figure 1-1: GS6080 Evaluation Board (EB-GS6080)

1.1 SDI Inputs and Outputs

The GS6080 is a high-speed BiCMOS integrated circuit designed to drive one or two 75Ω

coaxial cables. The EB-GS6080 is the Evaluation Board for the GS6080. It features one

pair of 100Ω differential inputs through SMA connectors (J3, J4) and one 75Ω

single-ended output through a BNC connector (J10).

1.2 Power

The EB-GS6080 Evaluation Board features three discrete methods of powering the

board. Refer to the GS6080 Data Sheet (DocID: PDS-060045) for more information on the

necessary power requirements of the device. The power supply types are described in

Table 1-1 below.

Note: Only one method of supplying power should be used at any time.

DDI

(J3)

DDI

(J4)

Control Switch

(SW1)

OSP (D1)

SDO1

(J10)

(TP1)

3V3

(TP2)

GND(TP3)

Micro USB Port

(Power Only)

EB-GS6080

Evaluation Board User Guide Rev. 1

PDS-060159 February 2014

5 of 10

Proprietary & Confidential

www.semtech.com

1.3 Switch Settings

A three-point dip switch (SW1) allows for input selection. The switch is simply used to

override the default states of the three input pins as described in the Table 1-2 below.

Note: Trace Equalization is not available in SD mode, and therefore must be disabled

when operating in this mode.

Table 1-1: EB-GS6080 Board Power Supply Methods

Power Supply Type Description

USB connection

Attach a USB cable to connector J1 (see

Figure 1-1) and connect the other end to a

PC or USB power source. The cable required

is a USB A Male to USB Micro-B Male

connector.

External 5V Supply

Attach ground reference (GND) to TP3 and

attach the 5V supply to TP1.

External 3.3V Supply

Attach ground reference (GND) to TP3 and

attach the 3.3V supply to TP2.

Note: If using the external 3.3V supply,

resistor R6 must be removed.

Table 1-2: Switch Settings

Switch Label Switch Position Description

SD/HD

Output slew rate set for

UHD-SDI/3G/HD

Output slew rate set for SD (default

state)

EQEN

Typical 3dB Trace Equalization

Trace Equalization OFF

(default state)

DISABLE

Entire device is powered down

Outputs (SDO/SDO

) enabled

(default state)

HDSD

EQEN

DISABLE

EB-GS6080

Evaluation Board User Guide Rev. 1

PDS-060159 February 2014

6 of 10

Proprietary & Confidential

www.semtech.com

1.4 Measuring ORL

To measure Output Return Loss (ORL) on the EB-GS6080 board, follow these steps:

1. Set the cable driver in balance mode by setting EQEN and SD. DISABLE must not be

set. The balance mode table is given below.

2. The cable driver outputs are now balanced. ORL can now be measured

single-endedly using a Network Analyzer. Please refer to the GS6080 Data Sheet

(DocID: PDS-060045) for more information regarding balance mode.

1.5 Signal Presence Indicator

The EB-GS6080 features a green LED (D1) which indicates when a valid signal has been

detected at the pre-driver output. The LED remains off if no signal is detected

Table 1-3: Balance Mode Truth Table

EQ_EN SD/HD DISABLE BAL

Enabled SD No Yes

Enabled HD No No

Disabled SD No No

Disabled HD No No

XXYesNo

Note: ‘X’ indicates a “Don’t Care” condition

EB-GS6080

Evaluation Board User Guide Rev. 1

PDS-060159 February 2014

7 of 10

Proprietary & Confidential

www.semtech.com

2. Schematics

Figure 2-1: EB-GS6080 Schematic

100nF

1nH

10μF

14.7kΩ

GND

100nF 10μF

RED

2.61kΩ

VCC

BLACK

0Ω

100nF

ADJ

75Ω

VCC

75Ω

10nF

VCC

750Ω

220Ω

1kΩ

4.7μF

SMA

1kΩ

4.7μF

TBD TBD

VCC

GREEN

10nF

75Ω

4.7μF

MMBT3906

VCC

SWDIP3

VCC

GS6080

VCC

ORANGE

3V3

SC4216H

BNCRA

4.7nH

VCC

TP2

TP3

TP1

C13C12

R11

SW1

J10

C69

C70

C68

R68

R66

C66

R65

U12

C63

C64

DISABLE

EQEN

SD/HDB

TAB

VEE

VCC

NC5

NC4

OSP

NC3

DISABLE

NC2

NC1

SDO

SD/HD*

TAB

EQ_EN

RSET

DDI

TAB

GND

NC_5

NC_4

VIN

NC_1

SMTRARCPTUSBBMICRO

SH6

SH5

SH4

SH3

SH2

SH1

SHELL6

SHELL5

SHELL4

SHELL3

SHELL2

SHELL1

GND

D+

D-

VBUS

EB-GS6080

Evaluation Board User Guide Rev. 1

PDS-060159 February 2014

8 of 10

Proprietary & Confidential

www.semtech.com

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)

EB-GS6080

Evaluation Board User Guide Rev. 1

PDS-060159 February 2014

9 of 10

Proprietary & Confidential

www.semtech.com

4. Bill of Materials

Table 4-1: Bill of Materials

Quantity Reference Design Part

3 C1, C3, C6 Capacitor, Ceramic; 0.1μF 16V 10% X7R 0603

2 C2, C7 Capacitor, Tantalum; 10μF 10V 10% 3216/1206

3 C5, C66, C68 Capacitor, Ceramic; 10000pF 25V 10% X7R 0402

4 C63, C64, C69, C70 Capacitor, Ceramic; 4.7μF 6.3V 20% X5R 0402

1 D1 LED; Green TSS TYPE SMD

1 D2 Diode; Schottky 20V 3A SMA

1 J1 Connector; RCPT REV Micro-USB Type B

1 J10 3G/HD RA BNC PCIe with Simulated Footprint Ver. 2

2 J3, J4 SMA Edge Mount Short Signal Pin

1 L1 Inductor; 1.0nH 300mA 0402

1 L2 Inductor; 4.7nH 300mA 0402

1 Q1 Transistor; GP PNP AMP SOT23-3

3R1, R2, R11

Resistor; 1.00k

Ω 1/10W 1% 0603 SMD

1R3

Resistor; 220

Ω 1/10W 1% 0603 SMD

4 R4, R5, R66, R68

Resistor; 75.0

Ω 1/16W 1% 0402 SMD

1R6

Resistor; 0.0

Ω 1/8W 5% 0805 SMD

1R65

Resistor; 750

Ω 1/16W 1% 0402 SMD

1R7

Resistor; 14.7k

Ω 1/10W 1% 0402 SMD

1R8

Resistor; 2.61k

Ω 1/16W 1% 0402 SMD

1 SW1 Switch Tape Seal 3 POS SMD

1 TP1 Test Point RED

1 TP2 Test Point ORANGE

1 TP3 Test Point BLK

1 U1

Semtech SC4216H very low input dropout

3A regulator with enable

1 U12 GS6080 Cable Driver, 6Gb/s, Dual Slew Rate

Do Not Populate

2 C12, C13 Value To Be Determined

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

The product is in a preproduction phase and specifications are subject to

change without notice.

EB-GS6080

Evaluation Board User Guide Rev. 1

PDS-060159 February 2014

10 of 10

Proprietary & Confidential

Contact Information

Semtech Corporation

Gennum Products Division

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

www.semtech.com

Semtech EB-GS6080 Evaluation Board User guide

Brand: Semtech

Model: EB-GS6080 Evaluation Board

Type: User guide

Download PDF

report

Semtech EB-GS6080 Evaluation Board User guide

Semtech EB-GS6080 Evaluation Board User guide

Related papers

Other documents