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LMH0344

www.ti.com

SNLS233L –APRIL 2007–REVISED APRIL 2013

3 Gbps HD/SD SDI Adaptive Cable Equalizer

Check for Samples: LMH0344

FEATURES

DESCRIPTION

The LMH0344 3 Gbps HD/SD SDI Adaptive Cable

• SMPTE 424M, SMPTE 292M, SMPTE 344M, and

Equalizer is designed to equalize data transmitted

SMPTE 259M Compliant

over cable (or any media with similar dispersive loss

• Supports DVB-ASI at 270 Mbps

characteristics). The equalizer operates over a wide

• Wide Range of Data Rates: 125 Mbps to 2.97

range of data rates from 125 Mbps to 2.97 Gbps and

supports SMPTE 424M, SMPTE 292M, SMPTE

Gbps

344M, and SMPTE 259M.

• Equalizes up to 120 Meters of Belden 1694A at

2.97 Gbps, up to 140 Meters of Belden 1694A

The LMH0344 implements DC restoration to correctly

at 1.485 Gbps, or up to 400 Meters of Belden handle pathological data conditions. The equalizer

may be driven in either a single ended or differential

1694A at 270 Mbps

configuration.

• Equalizes 0-120m of Belden 1694A at 2.97

Gbps With 0.3 UI Maximum Output Jitter

Additional features include separate carrier detect

and output mute pins which may be tied together to

• Manual Bypass and Output Mute With a

mute the output when no signal is present. A

Programmable Threshold

programmable mute reference is provided to mute the

• Single-Ended or Differential Input

output at a selectable level of signal degradation.

• 50Ω Differential Outputs (Internal 50Ω Pullups)

For applications which use the RGBα data patterns,

• Single 3.3V Supply Operation

the LMH0394 cable equalizer will provide better

performance.

• 280 mW Typical Power Consumption

• 16-Pin WQFN or 25-Ball CS-BGA Package

The device is available in two space–saving

packages: a 4 X 4 mm 16-pin WQFN and even more

• Industrial Temperature Range: −40°C to +85°C

space-efficient 3 x 3 mm 25-ball CS-BGA package.

• HBM ESD Rating: 8 kV

• WQFN Version Footprint Compatible With the

LMH0044 and LMH0074

• Replaces the Gennum GS2974A or GS2974B

APPLICATIONS

• SMPTE 424M, SMPTE 292M, SMPTE 344M, and

SMPTE 259M Serial Digital Interfaces

• Serial Digital Data Equalization and Reception

• Data Recovery Equalization

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (15 pages)

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LMH0344 www.ti.com SNLS233L – APRIL 2007 – REVISED APRIL 2013 3 Gbps HD/SD SDI Adaptive Cable Equalizer Check for Samples: LMH0344 FEATURES DESCRIPTION • The LMH0344 3 Gbps HD/SD SDI Adaptive Cable Equalizer is designed to equalize data transmitted over cable (or any media with similar dispersive loss characteristics). The equalizer operates over a wide range of data rates from 125 Mbps to 2.97 Gbps and supports SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M.
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LMH0344 SNLS233L – APRIL 2007 – REVISED APRIL 2013 www.ti.com Typical Application LMH0344 3G SDI Adaptive Cable Equalizer Coaxial Cable 75: 1.0 PF SDO SDI SDI 3.9 nH LMH0341 3G SDI Deserializer RXIN0 RXIN0 TXOUT TXOUT Reclocked Loopthrough SDO 1.0 PF MUTE 75: RX[4:0] MUTEREF 37.4: CD 5-bit LVDS + clk AEC- AEC+ BYPASS To FPGA RXCLK MUTE MUTEREF 1.0 PF BYPASS CD These devices have limited built-in ESD protection.
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LMH0344 www.ti.com SNLS233L – APRIL 2007 – REVISED APRIL 2013 DC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified Symbol Parameter VCMIN Input Common Mode Voltage VSDI Input Voltage Swing VCMOUT Output Common Mode Voltage VSDO Output Voltage Swing Conditions (1) (2) . Reference Min Typ 720 800 SDI, SDI At LMH0344 input (3) SDO, SDO mVP−P 750 mVP-P 1.3 V 0.
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LMH0344 SNLS233L – APRIL 2007 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics Figure 1. After Equalization: 120m of Belden 1694A with 2.97 Gbps PRBS 4 Figure 2. After Equalization: 120m of Belden 1694A with 2.
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LMH0344 www.ti.com SNLS233L – APRIL 2007 – REVISED APRIL 2013 2 SDI 3 VEE 4 CD MUTE VCC 14 13 LMH0344SQ (top view) AEC+ 5 6 7 8 MUTEREF SDI 15 BYPASS 1 16 AEC- VEE VCC CONNECTION DIAGRAM 12 VEE 11 SDO 10 SDO 9 VEE The exposed die attach pad is a negative electrical terminal for this device. It should be connected to the negative power supply voltage. Figure 3.
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LMH0344 SNLS233L – APRIL 2007 – REVISED APRIL 2013 www.ti.com PIN DESCRIPTIONS WQFN Pin CS-BGA Ball Name Description 2 C1 SDI Serial data true input. 3 D1 SDI Serial data complement input. 5 E2 AEC+ AEC loop filter external capacitor (1µF) positive connection. 6 E3 AEC- AEC loop filter external capacitor (1µF) negative connection. 7 D3 BYPASS Bypasses equalization and DC restoration when high. No equalization occurs in this mode. 8 E4 MUTEREF Mute reference.
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LMH0344 www.ti.com SNLS233L – APRIL 2007 – REVISED APRIL 2013 DEVICE OPERATION BLOCK DESCRIPTION The Equalizer Filter block is a multi-stage adaptive filter. If Bypass is high, the equalizer filter is disabled. The DC Restoration / Level Control block receives the differential signals from the equalizer filter block. This block incorporates a self-biasing DC restoration circuit to fully DC restore the signals. If Bypass is high, this function is disabled.
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LMH0344 SNLS233L – APRIL 2007 – REVISED APRIL 2013 www.ti.com REVISION HISTORY Changes from Revision K (April 2013) to Revision L • 8 Page Changed layout of National Data Sheet to TI format ............................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 21-Jul-2013 (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
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PACKAGE MATERIALS INFORMATION www.ti.com 24-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing LMH0344GR/NOPB csBGA NYA 25 LMH0344GRE/NOPB csBGA NYA LMH0344GRX/NOPB csBGA NYA LMH0344SQ/NOPB WQFN LMH0344SQE/NOPB LMH0344SQX/NOPB SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 1000 178.0 12.4 3.3 3.3 1.6 8.0 12.0 Q1 25 250 178.0 12.4 3.3 3.3 1.6 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 24-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMH0344GR/NOPB csBGA NYA 25 1000 210.0 185.0 35.0 LMH0344GRE/NOPB csBGA NYA 25 250 210.0 185.0 35.0 LMH0344GRX/NOPB csBGA NYA 25 3500 367.0 367.0 35.0 LMH0344SQ/NOPB WQFN RUM 16 1000 210.0 185.0 35.0 LMH0344SQE/NOPB WQFN RUM 16 250 210.0 185.0 35.0 LMH0344SQX/NOPB WQFN RUM 16 4500 367.0 367.
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MECHANICAL DATA NYA0025A GRA25A (Rev A) www.ti.
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MECHANICAL DATA RUM0016A SQB16A (Rev A) www.ti.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.