EBK-GS2960A-00 - Gennum Corp.

Broadcast Video





End-To-End Portfolio 

Enabling the Future 

• Equalizers-nowwithlongerreach

• CableDrivers-advancednewfeatures

• Reclockers

• CongurableSDII/O

• Serializers

• Deserializers

• CrosspointSwitches

• Timing(Gen-Clocks)

Semtech-GennumProducts

EnablingtheFutureof

VideoTransport

As a pioneer in digital video, Semtech - Gennum Products continues to lead the way in proven

SD, HD and 3Gb/s and emerging 6G UHD-SDI technologies. We oer the world’s most advanced

solutions designed specically for real world broadcast challenges, including the latest innovations

designed to help push the boundaries of performance, reach and signal integrity, while reducing

time to market and design risks.

In fact, there’s a good chance that any TV broadcast or professional video passed through several

Semtech components.

20 years of technology and standards leadership

For 20 plus years Semtech (previously Gennum) has focused on bringing innovative performance

solutions to the professional and broadcast video market and has been a leader in broadcast video

standardization activities. is history of innovation and achievement is a result of a company

wide focus and commitment to the broadcast industry sparking many industry rst products with

unparalleled performance and reliability.

With this ongoing focus on the broadcast industry and as a key contributor to SMPTE,

Semtech continues to pioneer transport technologies that deliver new experiences for the

video broadcast market.

contents

Equalizers 3

Cable Drivers 4

Reclockers 5

Congurable SDI - I/O 6

Product Guide 7

SerDes 9

Serializers 10

Deserializers 11

Crosspoint Switches 12

Timing (GEN-Clocks) 13

Evaluation Boards &

Reference Design Kits 14

1 Spring2013SemtechProductGuide•BroadcastVideo

Comprehensive portfolio of industry leading SDI products, SD, HD, 3G

and beyond...

We oer the most comprehensive, end-to-end portfolio of broadcast video solutions available, including our new family

of long-reach and high-density adaptive equalizers, next generation cable drivers and the industry’s most feature-rich

crosspoint switches.

6GUHD-SDISolutions

As next generation broadcast television and D-Cinema applications; such as stereoscopic 3DTV and 3D D-Cinema;

UHDTV-1, 4K D-Cinema and UHDTV-2 production high frame rate (HFR) and high dynamic range (HDR)

production, become more prolic in the marketplace, new, high speed SDI solutions are becoming necessary.

6G UHD-SDI enabled equipment provides the most optimized solution for the transport of future high quality,

multi-media content. For more information on 6G UHD-SDI, please contact your Semtech representative.

Dedicated to customer success

Our commitment to customer success is evident in everything we do. at’s why we:

• Comprehensively test each component in production, assuring high yield on assembled boards.

• Oer complimentary design review and feedback on Semtech-based designs to shorten design cycles, reduce risks

and optimize performance.

• Provide dedicated eld and applications engineering support throughout the product’s life-cycle.

And this commitment to the broadcast market is demonstrated by our ongoing contributions to and investments in SD,

HD & 3Gb/s standardization and technologies. We ease the migration path for customers to get to market quickly with

dierentiated solutions that are future-proofed for next generation video formats, ever-increasing data rates,

and evolving I/O and distance requirements.

www.semtech.com 2

PERFORMANCE OPTIMIZED

Semtech oers a comprehensive range of 3Gb/s adaptive

cable equalizers optimized for real-world applications.

e GS3440 long-reach 3Gb/s adaptive cable equalizer is

optimized for robust performance in applications requiring

200 meters of 3Gb/s cable reach. For greater exibility, the

GS3441, a dual output version of the GS3440, is also available.

LONG CABLE REACH - PRODUCTION TESTED

Designed for applications requiring maximum cable reach

and robust performance, the GS3440 and GS3441 feature the

industry’s longest reach, 200m at 3Gb/s. Semtech equalizers

are production tested at applicable data rates and cable

lengths ensuring the best performance and highest board

yields.

MULTI-RATE

Semtech equalizers oer robust multi-standard operation

from 125Mb/s to 2970Mb/s even in the presence of stressful

video pathological signals and are fully SMPTE 424M, 292M,

344M and 259M compliant.

LOWEST JITTER

Semtech continues to reduce jitter at all cable lengths and for

all data rates. e GS3440 and GS3441 oer the industry’s

longest cable reach with robust performance.

Equalizer

Output 1

AGC

SDI

SLEEP

SDO1

BYPASS CD

SDI

SDO1

AGCAGC

OP1_EN

SQ_ADJ

Squelch Adjust

Carrier Detect

Mute

Restore

Output 2

SDO2

OP2_EN

OP_CTL2

OP_CTL1

VCC_O1

VCC_O2

CLI

GAIN_SEL

GS3441

Equalizers

Industry’s most pervasive SDI equalizers– longest cable lengths, lowest jitter

and data rates up to 3Gb/s

LOW POWER

Semtech equalizers feature low power consumption for

power sensitive applications.

IMPROVED FEATURES

Enhanced ESD performance is critical for terminal I/O

connectivity and will result in more robust and higher

manufacturing yields.

Cable equalizers

Data

Rate

(Mb/s)

Input

0/6dB

gain

Output

Coupling

No. of

Outputs

3G Cable

Length

(m)

Cable

Length

(m)

Cable

Length

(m)

Footprint

Compat.

with

Temp

Range

(ºC)

Power

(mW)

Size

(mm) Pkg

GS3440

125 -

2970 YES 1.2 - 3.3V 1 210

300 550

all 16

QFN EQs

-40 to +85

180 4x4 16 QFN

GS3441

125 -

2970 YES 1.2 - 3.3V 2 210

300

550 GS2993

-40 to +85

212 4x4 24 QFN

GS2993

143 -

2970 YES 1.2 - 3.3V 2 140

200 400

GS3441

-40 to +85

165 4x4 24 QFN

GS2994

143 -

2970 YES 1.2 - 3.3V 1 140

200

400

all 16

QFN EQs

-40 to +85

165 4x4 16 QFN

GS2984

143 -

2970 YES 2.5/3.3V 1 140

200 400 -40 to +85 195

4x4 16 QFN

GS2964

143 -

2970 NO 3.3V 1 100

130 170 -40 to +85 215

4x4 16 QFN

GS1674

143 -

1485 NO 3.3V 1 N/A

220 400 -40 to +85

195 4x4 16 QFN

GS9074A

143 -

360 NO 3.3V

N/A N/A

350

0 to +70 215 4x4 16 QFN

3 Spring2013SemtechProductGuide•BroadcastVideo

MULTI-RATES

Semtech cable drivers oer robust multi-standard operation

from 143Mb/s to 2970Mb/s and are SMPTE 424M, 292M,

344M and 259M compliant.

LOW POWER

Semtech oers the best performance at the lowest power

consumption with an additional 45% power reduction in

standby mode.

LOW JITTER

Ultra low additive jitter at SD, HD, and 3Gb/s data rates.

BEST ORL

Better than -20dB output return loss (ORL) for HD

applications and better than -12dB ORL for 3Gb/s

applications.

INPUT TRACE EQUALIZATION

e GS2988 and GS2989 have trace equalization to equalize

long input trace lengths.

LARGER OUTPUT SWING

e GS2988 and 2989 oer higher maximum output swing to

compensate for losses that occur aer the cable driver output.

A larger output swing enables passive mux solutions (for

creating larger systems).

Cable Drivers

Lowest jitter, best ORL, and data rates up to 3Gb/s

UP TO FOUR OUTPUTS

e GS2989 oers four outputs for distribution

applications.

OUTPUT SIGNAL PRESENCE

e GS2988 and GS2989 oer an output signal presence

detector which provides status on the validity of the output.

APPLICATIONS

Routers, distribution ampliers, camera control units,

multiviewers, production switchers, master control switchers,

VTRs, video servers, encoders/decoders, up/down/cross

converters, test and measurement equipment. Compatible

with both standard BNC and newer, alternative connectors

such as the HD-BNC and DIN 1.0/2.3.

CABLE DRIVERS

Part

Number

Data

Rate

(Mb/s)

Power

(mW)

Power

Supply

(V)

Ouputs

Outputs

Cable

Boost™

(db)

Input

Trace

Output

Signal

Presence

Max

Output

Swing

(mV)

ESD

Prot.

(kV)

ORL

(dB)

Circuit

Compatible

with

Temp

Range

(ºC)

Pkg

GS2988

143 -

2970

110

2.5

3.3

2 – YES YES

1800

2.5

3G: -15

HD: -19

GS1678,

GS9077

-40

+85

QFN

GS2989

180 4 – YES YES

1800

2.5

3G: -15

HD: -19 GS1679

GS3480

0.1 to

2970

146 2 9

(1db

steps)

YES YES 2400 2 3G: -14

HD: -18 –

QFN

GS3481

146 4 YES YES 2400 2 3G: -14

HD: -18 –

GS1678

143 -

1485 110

2 – NO YES 1200 2.5 -19

GS2988,

GS9077

QFN

GS1679

180

4 – NO YES 1200 2.5 -19

GS2989

GS9077

143 -

540 168 3.3

2 – NO NO 1040 4 -20

GS1678,

GS2988

0 to

+70

GS2989

Bandgap Reference and Output Control

RSet

DISABLE2

SDI

SDO1

Output

Stage 1

SDO2

EQ_EN SD/HD3G

DISABLE1

Slew

Rate

Control

Trace

Equalizer

Output

Stage 2

www.semtech.com 4

5 Spring2013SemtechProductGuide•BroadcastVideo

GS2985

SDI 1

SDI 2

SDI 3

SDI 4

SDI 1

SDI 2

Serial

Clock

Re-timed

Data

Mute 1

XTAL (27 MHz)

SS[2:0]

SDO/EQ1_EN

SDI/EQ0_EN

SCK/EQ2_EN

CS/EQ3_EN

Auto/

MAN

Auto

Bypass

SD/HD3G

Mute 2

PLL/Re-Timer

Control Logic

Clock/

Data

Buer

SPI

Trace

Equalizer

Data

Buer

De-

emphasis

Driver

De-

emphasis

Driver

Recovered

Clock

DDI_SEL

[1:0]

Data

Mux

HIF

Reclockers

IMPROVED JITTER TOLERANCE

As routers and distribution systems grow in size, system jitter

increases. Reclocking has become important in maintaining

overall system robustness. In addition, as processing is being

integrated into more and more devices, reducing the overall

jitter in a system is critical, given that many processing

specic devices like FPGAs can have poor IJT. Performance

leading reclockers such as the Semtech GS2985 can be

utilized to increase overall system margin.

MULTI-RATE

Semtech reclockers oer robust multi-standard operation

from 270Mb/s to 2970Mb/s and are SMPTE 424M, 292M and

259M-C compliant.

LOWEST POWER

Semtech oers high-performance at the industry’s lowest

power consumption.

BEST INPUT JITTER TOLERANCE

Semtech’s unique reclocker architecture oers the industry’s

best input jitter tolerance for worry-free design exibility.

e GS2965, GS2985 and GS2986 all have a minimum input

jitter tolerance of 0.8UI, making them ideal for 3Gb/s SDI

designs.

LOW OUTPUT JITTER

e GS2985 features robust performance with the industry’s

best output jitter.

Industry’s lowest power and lowest jitter 3Gb/s solutions

ADDITIONAL FEATURES

e GS2965, GS2985, and GS2986 add input trace

equalization and output signal de-emphasis, which provides

additional exibility to system designers. In addition, the

serial control interface to these devices provide multiple

communication methods. ese devices also feature

automatic slew rate control when used with Semtech’s

cable drivers for multiformat applications. e integrated

2:1 or 4:1 signal selection mux at the input of the Semtech

reclockers allows them to be utilized in architectures that

require switching matrices and failover redundancy. is

reduces the need for additional signal path components and

their associated jitter.

SIZE

e GS2985 maintains the same size as previous generations,

while the GS2986 maintains the same features as the GS2985

but is 55% smaller. e GS2965 is 69% smaller than the

GS2985.

RECLOCKERS

Part

Number

Data

Rate

(Mb/s)

Power

Supply

(V)

Output

Jitter

(UI)

Input

Trace

Output

De-

emphasis

Serial

Interface

Input

MUX

Dual

Data

Output

Temp

Range

(ºC)

Power

(mW)

Size

(mm) Pkg

GS2965

270,

1485,

2970

2.5 or

3.3

3G: 0.05

HD: 0.03

SD: 0.01

YES YES YES

2 : 1

YES -40 to

+85 180 5x5

32 QFN

GS2985

270,

1485,

2970

2.5 or

3.3

YES YES YES

4 : 1

YES -40 to

+85 180 9x9 64 QFN

GS2986

270,

1485,

2970

2.5 or

3.3

YES YES YES

4 : 1

YES -40 to

+85 180 6x6 40 QFN

GS1675

270,

1485

2.5 or

3.3

HD: 0.03

SD: 0.01

YES YES YES

2 : 1

YES -40 to

+85

180 5x5 32 QFN

GS9076

270 3.3 SD: 0.02

NO NO NO

4 : 1

YES

0 to +70 400 9x9 64 QFN

www.semtech.com 6

SDI/SDO

DDI

DDO

CD_SD_EN

EQ_OP_CTRL

EQ_SQ_ADJ

EQ_GAIN_SEL

EQ_DISABLE

EQ_BYPASS

RESET

CD_ENABLE

DESIGN FLEXIBILITY

e GS3490 is ideal for high-density applications with

limited connector space where individual connectors

may need to be congured as either an input or output.

In addition, the GS3490 is suitable for multi-function PCBs

that require individual IO to be congured based on nal

product conguration.

BEST IN CLASS PERFORMANCE

Oering the longest cable reach for a congurable SDI

I/O, the GS3490 is capable of 140m at 2.97Gb/s, 250m at

1.485Gb/s and 550m at 270Mb/s (SD and DVB/ASI). External

termination components allow for exibly of layout and

tuning for PCB layout optimization.

SMALL PACKAGE SIZE

e GS3490 features a manufacturing friendly 5x5 QFN

package which is ideal for applications with a dense channel

pitch and limited PCB space.

Configurable SDI Input/Output -

Equalizer/Cable Driver

Lowest jitter, best ORL, and data rates up to 3Gb/s

Configurable sDi input/output - 

Part

Number

Data Rate

(Mb/s)

Power

(mW)

Outputs Cable Reach

(m) DVB-ASI Temp

(ºC) Size (mm) Pkg

GS3490 125-2970 EQ: 202

CD: 215

EQ: 1

CD: 1

3G: 140

HD: 250

SD: 550

Yes -40-85 5x5 32 QFN

equalizers

Part

Number

Data Rate

(Mb/s)

Power

(mW)

3G Cable

Lgth (m)

HD Cable

Lgth (m)

Cable Lgth

(m)

Input

0/6dB

gain

No. of

Outputs

Output

Coupling

Cable Lgth

Indication

Temp

Range (ºC)

Pkg

GS3440

125 - 2970 180 210

300 550

YES 1 1.2 - 3.3V NO

-40 to +85

16 QFN

GS3441

125 - 2970 212 210

300

550 YES 2 1.2 - 3.3V YES

-40 to +85

24 QFN

GS2993

143 - 2970 165 140

200 400

YES 2 1.2 - 3.3V YES

-40 to +85

24 QFN

GS2994

143 - 2970 165 140

200

400 YES 1 1.2 - 3.3V NO

-40 to +85

16 QFN

GS2984

143 - 2970

195

140

200 400

YES 1 2.5/3.3V NO

-40 to +85

16 QFN

GS2964

143 - 2970

215

100

130 170

NO 1 3.3V NO

-40 to +85

16 QFN

GS1674

143 - 1485 195 N/A

220 400

NO 1 3.3V NO

-40 to +85

16 QFN

GS9074A

143 - 360 215 N/A N/A

350

3.3V

0 to +70 16 QFN

Product Guide

7 Spring2013SemtechProductGuide•BroadcastVideo

RECLOCKERS

Part

Number

Data Rate

(Mb/s)

Power

(mW)

Power

Supply (V)

Input

Trace EQ

Output

De-emphasis

Input

MUX

Temp

Range (ºC)

Size

(mm) Pkg

GS2965

270, 1485, 2970

180

2.5 or 3.3

YES YES

2 : 1

-40 to +85 5x5

32 QFN

GS2985

270, 1485, 2970

180

2.5 or 3.3

YES YES

4 : 1

-40 to +85 9x9 64 QFN

GS2986

270, 1485, 2970

180

2.5 or 3.3

YES YES

4 : 1

-40 to +85 6x6 40 QFN

GS1675

270, 1485 180 2.5 or 3.3

YES YES

2 : 1

-40 to +85

5x5 32 QFN

GS9076

270 400 3.3

NO NO

4 : 1 0 to +70 9x9 64 QFN

CABLE DRIVERS

Part

Number

Data Rate

(Mb/s)

Power

(mW)

Power

Supply (V) Outputs Input Trace

Output

Signal

Presence

Max

Output

Swing (mV)

Temp

Range (ºC) Pkg

GS2988

143 - 2970

110

2.5 or 3.3

2 YES YES

1800

-40 to +85 16 QFN

GS2989

143 - 2970

180

2.5 or 3.3

4 YES YES

1800

-40 to +85 16 QFN

GS3480

0.1 to 2970 146 2.5 or 3.3

2 YES YES 2400 -40 to +85

24 QFN

GS3481

0.1 to 2970 146 2.5 or 3.3

4 YES YES 2400 -40 to +85

24 QFN

GS1678

143 - 1485 110 2.5 or 3.3

2 NO YES 1200 -40 to +85

16 QFN

GS1679

143 - 1485 180 2.5 or 3.3

4 NO YES 1200 -40 to +85

16 QFN

GS9077

143 - 540 168 3.3

2 NO NO 1040

0 to +70 16 QFN

Configurable sDi input/output - 

Part

Number

Data Rate

(Mb/s)

Power

(mW) Outputs Cable Reach

(m) DVB-ASI Temp

(ºC)

Size

(mm) Pkg

GS3490 125-2970 EQ: 202

CD: 215

EQ: 1

CD: 1

3G: 140

HD: 250

SD: 550

Yes -40-85 5x5 32 QFN

SERIALIZERS

Part

Number

Data Rate

(Mb/s)

Video

Processing

Audio Embed

Output

Jitter (ps)

Parallel

Bus Width

CEA

861

Timing

Temp

Range (ºC)

Power

(mW) Pkg

GS2972

270, 1485,

2970

YES YES

3G: 40

HD: 50

SD: 200

10 or 20

YES -40 to +85

400 BGA 100

GS2962

270, 1485,

2970

YES NO

3G: 40

HD: 50

SD: 200

10 or 20

YES -40 to +85

350 BGA 100

GS1672

270, 1485

YES YES

HD:50

SD: 200 10 or 20

YES -40 to +85

350 BGA 100

GS1662

270, 1485

YES NO

HD: 50

SD: 200 10 or 20

YES -40 to +85

330 BGA 100

GS9092A

270

YES NO

SD: 225

NO 0 to +70 200 QFN 56

DESERIALIZERS

Part

Number

Data Rate

(Mb/s)

Equalizer Video

Processing

Serial

Loop

Through

IJT

(UI)

ANC

Extraction

Audio

De-embed

CEA 861

Timing

Temp

Range

(ºC)

Power

(mW) Pkg

GS3419

270, 1485,

2970 YES

YES YES 0.7 YES YES

YES

-40 to +85

545 BGA 100

GS3418

270, 1485,

2970 YES

YES YES 0.7 YES NO

YES

-40 to +85

515 BGA 100

GS2970A

270, 1485,

2970 NO

YES YES 0.7 YES YES

YES

-40 to +85

350 BGA 100

GS2960A

270, 1485,

2970 NO

YES YES 0.7 YES NO

YES

-40 to +85

320 BGA 100

GS1661A1

270, 1485 YES

YES YES 0.7 YES NO

YES

-40 to +85

460 BGA 100

GS1660A2

270, 1485 NO

YES YES 0.7 YES NO

-40 to +85

280 BGA 100

GS9091B

270 YES

YES NO 0.5 YES NO

0 to +70

350 BGA 100

GS9090B

270 NO

YES NO 0.5 YES NO

0 to +70

145 QFN 56

1-GS1671A audio version available, 2-GS1670A audio version available.

Crosspoint switChes

Part

Number

Data Rate (Gb/s) Power (W)

Inputs Outputs Input Trace

Output

De-emphasis

Pkg

GX3290

3.5

290 290 YES

YES

2377 BGA

GX3190

3.5 25 146 290 YES

YES

2377 BGA

GX3246

3.5

18 290 146

YES

2377 BGA

GX3202

3.5 24 202 202

YES

2377 BGA

GX3146

3.5 18 146 146

YES

2377 BGA

GX4002

14 0.3 2 2

YES

YES 32 QFN

www.semtech.com 8

Transmitter

w/CD

Complete Complete

Gennum: Complete Solution Transmitter/Receiver

EQ+Receiver

SDI Output

SDI Input Low-End FPGA

Spartan 3A, Cyclone III

Proprietary Customer

Logic

Receiver

VCXO

Digital

SMPTE processing

Proprietary Customer Logic

Reclocker

Receiver

Transmitter

Integrated Transceiver FPGAs

Digital

SMPTE processing

Proprietary Customer Logic

Receiver Transmitter

w/CD

Partial Partial

FPGA-Helper SERDES

SDI Output SDI Input

High-End FPGA

Virtex 5,Stratix II GX

SDI Output SDI Input

High-End FPGA

Virtex 5,Stratix II

Transmitter

w/CD

Complete Complete

Gennum: Complete Solution Transmitter/Receiver

EQ+Receiver

SDI Output

SDI Input Low-End FPGA

Spartan 3A, Cyclone III

Proprietary Customer

Logic

Receiver

VCXO

Digital

SMPTE processing

Proprietary Customer Logic

Reclocker

Receiver

Transmitter

Integrated Transceiver FPGAs

Digital

SMPTE processing

Proprietary Customer Logic

Receiver Transmitter

w/CD

Partial Partial

FPGA-Helper SERDES

SDI Output SDI Input

High-End FPGA

Virtex 5,Stratix II GX

SDI Output

SDI Input

High-End FPGA

Virtex 5,Stratix II

Transmitter

w/CD

Complete Complete

Gennum: Complete Solution Transmitter/Receiver

EQ+Receiver

SDI Output

SDI Input Low-End FPGA

Spartan 3A, Cyclone III

Proprietary Customer

Logic

Receiver

VCXO

Digital

SMPTE processing

Proprietary Customer Logic

Reclocker

Receiver

Transmitter

Integrated Transceiver FPGAs

Digital

SMPTE processing

Proprietary Customer Logic

Receiver Transmitter

w/CD

Partial Partial

FPGA-Helper SERDES

SDI Output SDI Input

High-End FPGA

Virtex 5,Stratix II GX

SDI Output SDI Input

High-End FPGA

Virtex 5,Stratix II

Choosing the Right SerDes For Your System

Designers have the choice of selecting components from

dierent vendors. But when it comes to designs with

serializers and deserializers, they must rst choose an

architecture. In implementing a design with a serializer and/

or deserializer, there are 3 architectural choices: Semtech’s

complete serializer/deserializer solution architecture, an

integrated-transceiver FPGA architecture and an FPGA-

helper architecture. Let’s explore these three options with

an assessment of the following key parameters: jitter, power

consumption, integration (component/features), time-to-

market, system size and cost.

SEMTECH’S COMPLETE SOLUTION ARCHITECTURE

Leveraging our expertise in signal integrity and our deep

understanding of broadcast video technologies, Semtech’s

SDI serializer and deserializer oering encapsulates all

the analog components (SerDes, VCO, CD, EQ, Reclocker)

and digital SMPTE video and audio processing required

to transmit and receive SDI video. Integrating all of these

components into one package reduces the PCB footprint

required to implement SDI transmit/receive, and the

solution benets from Semtech’s superior jitter performance.

is optimized, cost-eective and power ecient ASIC

implementation allows customers to focus on their unique

value-added processing for quicker time-to-market.

Only Semtech oers a solution that scores high for each

evaluation parameter.

INTEGRATED-TRANSCEIVER FPGA ARCHITECTURE

Integrated-transceiver FPGAs typically oer the worst

specications in terms of jitter. Maximum output jitter and

input jitter tolerance (IJT) are typically at the limit of the

SMPTE standards, and, in some cases, actually in violation

of industry norms. at is why extra components, namely

VCXOs and reclockers, are required to get the system jitter

performance to an acceptable level. is comes at a penalty

of higher power consumption, system footprint size and cost.

Because of all the ne tuning required to get this architecture

to work, and because of the IP licensing/development

required for the digital SMPTE video processing, this

Serializers/Deserializers

architecture unnecessarily prolongs time-to-market. Finally,

while FPGAs integrate transceivers, they do not integrate

routing components like cable drivers and equalizers.

FPGA-HELPER ARCHITECTURE

e FPGA-helper architecture, as depicted below, involves

the use of a component that includes the physical media

attachment part of a SMPTE deserializer/serializer, with

the digital SMPTE processing implemented in the FPGA.

e result is an architecture that is taxing in terms of power

consumption and those FPGA-helper parts are lacking even

basic SMPTE digital processing. In many cases, product

specic FPGA IP already requires high utilization factors

in small, low-cost FPGAs, and the added requirement of

digital SMPTE video processing in the FPGA may drive

adoption of a larger FPGA. is results in further penalties

in power consumption, size and system cost. And while

this architecture fares well in system jitter performance in

certain cases, the added engineering eort in developing

(or licensing) and stitching that video processing logic to

product specic code ensures a slower time-to-market.

Finally, while some FPGA-helper parts integrate a cable

driver, the oering lacks an integrated equalizer.

HOW THE SEMTECH SOLUTION STACKS UP

Compare the ratings of each of the 3 architectures for key

parameters in an implementation of 1 Rx and 1 Tx channel.

Semtech

COMPLETE

SOLUTION

INTEGRATED-

TRANSCEIVER

FPGA

FPGA-HELPER

SERDES

Jitter Performance

Time-to-Market

Power Consumption

Integration

Overall PCB Space

System Cost

9 Spring2013SemtechProductGuide•BroadcastVideo

SDI

Output

Video

Processing Serializer

Video

Timing

Pclk

Audio

Cable

Driver

Narrow

LBW PLL

Audio

Embedder

GS2972

Serializers

3Gb/s SDI

Semtech’s GS2972 and GS2962 are fully compliant with

SMPTE 424M and 425M including support for both Level

A and Level B. In addition, these chips are the only ASIC

solutions providing conversion from Level A to Level B. e

full set of included features makes these devices the ideal

choice for 1080p 50/60 transmission.

COMPLETE VIDEO PROCESSING

Semtech serializers have the most complete video processing

features available. ese include, but are not limited to

scrambling, TRS detection or insertion, and ancillary data

insertion.

GREAT FOR DVB-ASI

All Semtech serializers are DVB-ASI capable.

AUDIO EMBEDDING

Semtech’s serializers include an integrated audio embedder

supporting AES, I2S, and serial audio formats.

The easiest, fastest, lowest power method of implementing an SDI or ASI link.

EXCELLENT JITTER PERFORMANCE

Due to the integrated PLL with narrow loop

bandwidth, the serializers can reject up to 300ps of jitter

on the parallel clock, outputting very low jitter, SMPTE

compliant SDI signals.

POWER AND AREA EFFICIENT

e high level of integration in Semtech’s serializers provides

the lowest power and smallest means of implementing an

SDI link.

APPLICATIONS

Cameras, camera control units, multiviewers, routers,

production switchers, master control switchers, VTRs,

video servers, encoders/decoders, up/down/cross converters,

audio embedders, format detectors, test and measurement

equipment.

www.semtech.com 10

SERIALIZERS

Part

Number

Data Rate

(Mb/s)

Video

Processing

DVB/

ASI

Ancillary

Data

Insert.

Audio

Embed

Cable

Driver

Output

Jitter

(ps)

Parallel

Bus

Width

CEA

861

Timing

Temp

Range

(ºC)

Power

(mW)

Stand-

by Pkg

GS2972

270, 1485,

2970

YES YES YES YES YES

3G: 40

HD: 50

SD: 200

10 or 20

YES

-40

+85

400

YES

BGA

100

GS2962

270, 1485,

2970

YES YES YES NO YES

3G: 40

HD: 50

SD: 200

10 or 20

YES

350

YES

GS1672

270, 1485

YES YES YES YES YES

HD:50

SD: 200 10 or 20

YES

350

YES

GS1662

270, 1485

YES YES YES NO YES

HD: 50

SD: 200 10 or 20

YES

330

YES

GS9092A

270

YES YES YES NO YES

SD: 225

NO 0 to

+70 200

QFN

GS2971A

Pclk

Video

Timing

Audio Clock

Audio Data

Serial Loop

Through

SDI

Input

SDI

Equalizer Reclocker Video

Processing

Audio

De-embedder

Deserializer Clock

Generator

Buffer

Mux

Deserializers

3Gb/s SDI

Semtech’s GS293418 and GS293419 deserializers take

integration to the next level by incorporating the latest

equalization technology from Semtech’s GS3440 adaptive

cable EQ, the industry’s longest reach EQ. e GS3418 and

audio enabled GS3419 are both compact, comprehensive,

single-chip receive solutions that also include a VCO,

reclocker, and digital SMPTE video and audio processing.

e GS3418 and GS3419 are ideally suited for long-reach

applications requiring 200m of reach at 3Gb/s. Semtech’s

3Gb/s SDI deserializers are fully compliant with SMPTE

424M and 425M, including support for both Level A and

Level B. In addition, Semtech deserializers are the only ASIC

solutions providing conversion from Level B to Level A. e

full set of included features makes these devices the ideal

choice for 1080p 50/60.

COMPLETE VIDEO PROCESSING

Semtech deserializers have the most complete set of video

processing features available. ese include, but are not

limited to descrambling, word alignment, comprehensive

error detection and correction, and ancillary data extraction.

GREAT FOR DVB-ASI

All Semtech receivers are DVB-ASI capable.

The easiest, fastest, lowest power method of implementing an SDI or ASI link.

AUDIO DE-EMBEDDING

GS2971A includes an integrated audio

de-embedder supporting AES, I2S, and serial audio formats.

e chip also features an integrated audio clock generator.

INTEGRATED EQUALIZER

Semtech’s GS2971A and GS2961A deserializers feature a

high-performance integrated adaptive cable equalizer. e

integration of the cable equalizer reduces overall PCB

component footprint, and power requirements.

APPLICATIONS

Monitors, camera control units, multiviewers, routers,

production switchers, master control switchers, VTRs, video

servers, encoders/decoders, up/down/cross converters, audio

de-embedders, format detectors, test and measurement

equipment.

DESERIALIZERS

Part

Number

Data Rate

(Mb/s)

EQ Video

Process

Serial

Loop

Through

IJT

(UI)

ANC

Extrac-

tion

Audio

De-

embed

Audio

Clock

Gen.

Par

Bus

Width

CEA

861

Timing

Temp

Range

(ºC)

Power

(mW)

Stand-

by Pkg

GS3419

270, 1485,

2970 YES

YES YES 0.7 YES YES YES

YES

-40

+85

545 YES

BGA

100

GS3418

270, 1485,

2970 YES

YES YES 0.7 YES NO NO

YES 515 YES

GS2970A

270, 1485,

2970 NO

YES YES 0.7 YES YES YES

YES 350 YES

GS2960A

270, 1485,

2970 NO

YES YES 0.7 YES NO NO

YES 320 YES

GS1661A1

270, 1485 YES

YES YES 0.7 YES NO NO

YES 460 YES

GS1660A2

270, 1485 NO

YES YES 0.7 YES NO NO

NO 280 YES

GS9091B

270 YES

YES NO 0.5 YES NO NO 10

+70

350

GS9090B

270 NO

YES NO 0.5 YES NO NO 10

NO 145

QFN

1-GS1671A audio version available, 2-GS1670A audio version available.

11 Spring2013SemtechProductGuide•BroadcastVideo

www.semtech.com 12

Crosspoint Switches

Semtech crosspoint switches provide an unmatched combination of size, features

and performance. At sizes up to 290 inputs and 290 outputs, these are the largest

asynchronous, fully non-blocking crosspoint switches in the industry.

Crosspoint switChes

Data

Rate

(Gb/s)

Inputs

Input

Sensitivity

(mV)

Input

Trace

Out-

puts

Output

De-

emphasis

DC coupling

Temp

Range

(ºC)

Power

(W)

Size

(mm) Pkg

GX3290

3.5 290 80 YES 290

YES

1.2V, 1.8V, 2.5V 0 to +85

50x50 2377 BGA

GX3190

3.5 146 80 YES 290

YES

1.2V, 1.8V, 2.5V 0 to +85 25 50x50 2377 BGA

GX3246

3.5

290

80 YES

146 YES

1.2V, 1.8V, 2.5V 0 to +85

50x50 2377 BGA

GX3202

3.5 202

80 YES

202 YES

1.2V, 1.8V, 2.5V 0 to +85

50x50 2377 BGA

GX3146

3.5 146 80

YES

146 YES

1.2V, 1.8V, 2.5V 0 to +85

50x50 2377 BGA

MULTIPLE STROBES

Eight update enable strobe pins allow the crosspoint to be

partitioned into independently updatable blocks. is is

useful in multi-format environments when the switches

need to occur at dierent points in time. Each update strobe

can be assigned on a per-output basis, enabling maximum

exibility.

DATA RATE MARGIN

Supporting data rates up to 3.5Gb/s means that there

is signicant margin for video systems operating up to

2.97Gb/s. is margin also means the product can be used in

Xaui™, DisplayPort™ and HDMI switching applications.

FULLY INDEPENDENT INPUT AND OUTPUT CHANNELS

All our crosspoints provide independent input trace

equalization and output de-emphasis, which can compensate

for over 50 inches of PCB trace loss. is provides higher

signal integrity and lower jitter in designs utilizing long

traces or passive splitting. In addition, with output swing

congurable as low as 200mV, system power can be

signicantly reduced.

ON-CHIP PATTERN GENERATORS AND EYE PATTERN

DIAGNOSTICS

Independent pattern generators and checkers can be used for

testing signal paths on either the input or output side of the

system. e pattern checker can be congured to check for

bit errors using one of three PRBS patterns or any arbitrary

pattern, important for evaluating system performance with

video pathological signals. All crosspoint devices can check

for bit errors at arbitrary phase osets from the received data,

and jitter margin can be determined by measurement of the

horizontal eye opening.

TEMPERATURE SENSORS

Four on-chip temperature sensors monitor the junction

temperature of the chip. is enables automated control of

fan speed and power down sequences to meet environmental

demands for energy conservation.

LOW POWER

When compared to competitive solutions, Semtech

crosspoints provide industry leading per channel power

consumption, with less than 1W consumed in stand-by

mode. System power can be further reduced by taking

advantage of the crosspoint’s high input sensitivity while

using Semtech equalizers congured for minimum output

swing levels.

FLEXIBLE FOOTPRINT

All Semtech crosspoints are pin compatible, sharing the

same control interface and register set. is allows a single

platform design to be easily scaled to the necessary switch

size with no re-work required in either hardware or soware.

INPUT SENSITIVITY

To address losses typical in many router architectures, the

Semtech crosspoint family provide for high input sensitivity,

resulting in additional system margin. In addition, high

input sensitivity facilitates better system optimization,

including reduced swing on upstream drivers, providing

substantial power savings.

APPLICATIONS

Routers, multiviewers, production switchers, master control

switchers and broadcast modular equipment.

CloCk generators

Part

Number

Input

Video

Standard

Output

Video

Standard

Max Output

Video Clock

(MHz)

Power

Supply

(V)

Pkg. Size

(mm) Genlock Audio

Clocks

User

Program-

mable

Power

(mW)

GS4900B

3G/

HD/SD/

Graphics

SD 54 3.3, 1.8 64

QFN 9 x 9 YES NO NO 215

GS4901B SD 54 3.3, 1.8 64

QFN 9 x 9 YES YES NO 265

GS4910B 3G/

HD/SD/

Graphics

165 3.3, 1.8 64

QFN 9 x 9 YES NO YES 250

GS4911B 165 3.3, 1.8 64

QFN 9 x 9 YES YES YES 300

Timing (GEN-Clocks)

GS4900B/GS4901B/GS4910B/GS4911B

CLOCK GENERATORS

GENLOCK CAPABILITY

Semtech clock generators can be genlocked to reference with

a variable oset. On loss of reference, the video clocks will

ywheel to maintain their frequency.

GENERATES MULTIPLE CLOCKS

3 video clocks (2 single-ended and one dierential), 3 single-

ended audio clocks, and 8 single-ended congurable timing

signals can be generated. Video clocks up to 165MHz can be

produced in order to support up to 3Gb/s SDI and UXGA.

In addition, the GS4911B features crosslocking capability

where HD timing can be generated from an SD reference,

increasing design exibility.

INPUT STANDARD DETECTION

By supplying the clock generator with HSync, VSync and

Fsync, the chip will determine if it matches one of 36 video or

16 graphics standards and will report the detected standard.

A complete timing solution for broadcast video

GS4915 ClockCleaner™

REDUCES JITTER TO MEET SMPTE SPECS

e GS4915 will reduce jitter on video clocks of 27, 74.25,

74.25/1.001, 148.5, and 148.5/1.001 MHz. Output jitter

will typically be 20ps, which will guarantee 3Gb/s SDI

compliance when used with a serializer.

FLEXIBLE I/O FREQUENCIES AND LEVELS

SD (27MHz), and HD (74.25, 74.25/1.001, 148.5,

148.5/1.001MHz) frequencies can be input and output from

the GS4915. e chip also has single-ended and dierential

inputs and outputs to facilitate interfacing with a variety of

chips.

FREQUENCY DOUBLER TO MEET 3Gb/s SDI

REQUIREMENTS

If the input clock frequency is 74.25 or 74.25/1.001MHz, the

GS4915 can double the output, providing a low jitter 148.5 or

148.5/1.001MHz output clock which can be used for HD-SDI

and 3Gb/s SDI applications.

HSync

VSync

FSync

8 Video

Timing

Signals

Detected

Standard

3 Audio Clocks

3 Video

Clocks

2 S/E, 1 Diff

Standard

Detection

Timing Signal

Generation

Audio Clock

Generation

Video Clock

Generation &

Timing Offset

X-point

Delay

Adjust

GS4911B

PCLK

Clean

Clock

Clean

Clock

Diff

Input

Single

Ended

Input

External

GO1555

PLL

Frequency

Detection/Selection,

Bypass, Skew Control

GS4915

13 Spring2013SemtechProductGuide•BroadcastVideo

www.semtech.com 14

Product Function EB/RDK Part Description

SERIALIZERS

3G SDI Serializer

EBK-GS2972-00 GS2972 evaluation board; mates with the GS2960A, GS2970A or

GS2971A evaluation boards

3G SDI Serializer

EBK-GS2962-00 GS2962 evaluation board; mates with the GS2960A, GS2970A or

GS2971A evaluation boards

DESERIALIZERS

3G SDI Deserializer

EBK-GS2971A-00 GS2971A evaluation board that can mate with the GS2972 evaluation board,

a Spartan-3A evaluation kit or a Cyclone III evaluation kit

3G SDI Deserializer

EBK-GS2970A-00 GS2970A evaluation board; mates with the GS2962 or GS2972 evaluation boards

3G SDI Deserializer

EBK-GS2960A-00 GS2960A evaluation board; mates with the GS2962 or GS2972 evaluation boards

SERIALIZERS & DESERIALIZERS

3G SDI Transceiver +

VOM

RDK-

3GRXTXOXLNX01

RDK with 2 SDI deserializers, 2 SDI serializers and 1 VOM input; mates with

Spartan-3A evaluation kit; connectors for audio insertion and extraction

3G SDI Transceiver +

VOM

RDK-

3GRXTXOALTR01

RDK with 2 SDI deserializers, 2 SDI serializers and 1 VOM input; mates with

Cyclone III evaluation kit; connectors for audio insertion and extraction

EQUALIZERS, RECLOCKERS, CABLE DRIVERS & DC RESTORE

3G SDI Reclocker

EBK-GS2985-QUAD00 Quad channel evaluation board, to evaluate the GS2985 performance

with varying trace lengths (GS2984x3; GS2985, GS2988x4)

3G SDI Reclocker

EBK-GS2985-01 GS2985 system evaluation board (GS2984, GS2985 and GS2988)

3G SDI Equalizer

EBK-GS2993-00 GS2993 evaluation board (GS2993 only.

The GS2993 oers equivalent performance to the GS2994)

3G SDI Equalizer

EBK-GS2984-00 GS2984 evaluation board (GS2984 only)

3G SDI Equalizer

EBK-GS3440-00 GS3440 evaluation board (GS3440 only)

3G SDI Equalizer

EBK-GS3441-00 GS3441 evaluation board (GS3441 only)

3G SDI Cable Driver

EBK-GS2989-00 GS2989 four output evaluation board (GS2989 only)

3G SDI DC Restore

EBK-GS2914-00 GS2914 evaluation board (GS2914 only)

SDI INPUT/OUTPUT DEVICES

3G SDI Conﬁgurable I/O

EBK-GS3490-00 GS3490 Evaluation board (GS3490 Only)

TIMING

SDI Timing

EBK-GS4911B-00 GS4911B evaluation board (GS4911B, GS4982)

Evaluation Boards/Reference Design Kits (EBK/rdK)



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Broadcast_sg13

Semtech Corporation Headquarters

200 Flynn Road, Camarillo, California 93012

phone: (805) 498-2111 • fax: (805) 498-3804 • email: corporate@gennum.com • www.semtech.com













Semtech Corporation is a leading supplier

of analog and mixed-signal semiconductor

platforms for high-end consumer, computing,

communications and industrial applications.

Our vision is to be the global leader

in analog and mixed-signal platforms

enabling architectural and performance

dierentiation. Semtech, publicly traded

since 1967, is listed on the NASDAQ Global

Select Market under the symbol SMTC

and has more than 31 sales and application

support oces in 18 countries as well as

representatives and distribution support

locations in more than 30 countries.

Our proprietary platforms, dierentiated

by innovation, size, eciency, performance

and reach, are used in some of the most

innovative systems and products in the

market today. Semtech products can be

found in a wide range of fast-growing

market segments, including Smart Phones,

LED TVs, Tablets, Wireless LAN Modems,

Automated Meter Reading, Ultra-Low-

Power Medical, Satellite Communication,

Cellular Infrastructure, Optical Transport,

Datacenters and state-of-the-art Broadcast

Video industries.

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CUSTOMER CONTACT & SALES OFFICE LISTING

More than 5,000 customers worldwide

rely on our diverse product portfolio and

world class technology roadmap to provide

them with solutions for low-power wireless

communications, optical data transport,

video broadcasting, power management,

circuit protection, touch sensing, and more,

making Semtech one of the most balanced

semiconductor companies in the industry.