Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsInterface ICsInterface IC - customised SOIC 16 N

1 PF

37.4:

Coaxial Cable

75:

LMH0034 Adaptive

Cable Equalizer

SDI

SDO

SDI

AEC+

AEC-

SDO

CLI

MUTE

REF

CD/MUTE

BYPASS

4.7 PF

Outputs

MUTE

REF

CD/MUTE

BYPASS

1 PF

CLI

75:

6.8 nH

LMH0034

www.ti.com

SNLS213H –JANUARY 2006–REVISED APRIL 2013

LMH0034 SMPTE 292M / 259M Adaptive Cable Equalizer

Check for Samples: LMH0034

FEATURES

DESCRIPTION

The LMH0034 SMPTE 292M / 259M adaptive cable

• SMPTE 292M, SMPTE 344M and SMPTE 259M

equalizer is a monolithic integrated circuit for

Compliant

equalizing data transmitted over cable (or any media

• Supports DVB-ASI at 270 Mbps

with similar dispersive loss characteristics). The

• Data Rates: 125 Mbps to 1.485 Gbps

equalizer operates over a wide range of data rates

from 125 Mbps to 1.485 Gbps and supports SMPTE

• Equalizes up to 200 Meters of Belden 1694A at

292M, SMPTE 344M and SMPTE 259M.

1.485 Gbps or up to 400 Meters of Belden

1694A at 270 Mbps

The LMH0034 implements DC restoration to correctly

handle pathological data conditions. DC restoration

• Manual Bypass, Cable Length Indicator, and

can be bypassed for low data rate applications. The

Output Mute with a Programmable Threshold

equalizer is flexible in allowing either single-ended or

• Single-Ended or Differential Input

differential input drive.

• 50Ω Differential Outputs

Additional features include a combined carrier detect

• Single 3.3V Supply Operation

and output mute pin which mutes the output when no

• 208 mW Typical Power Consumption with 3.3V signal is present. A programmable mute reference is

used to mute the output at a selectable level of signal

Supply

degradation. A cable length indicator is provided to

• Replaces the GS1524 and GS1524A

determine the amount of cable being equalized.

APPLICATIONS

• SMPTE 292M, SMPTE 344M, and SMPTE 259M

Serial Digital Interfaces

• Serial Digital Data Equalization and Reception

• Data Recovery Equalization

Typical Application

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 (14 pages)

PAGE 1
LMH0034 www.ti.com SNLS213H – JANUARY 2006 – REVISED APRIL 2013 LMH0034 SMPTE 292M / 259M Adaptive Cable Equalizer Check for Samples: LMH0034 FEATURES DESCRIPTION • The LMH0034 SMPTE 292M / 259M adaptive cable equalizer is a monolithic integrated circuit for equalizing 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 1.485 Gbps and supports SMPTE 292M, SMPTE 344M and SMPTE 259M.
PAGE 2
LMH0034 SNLS213H – JANUARY 2006 – REVISED APRIL 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) −0.5V to 3.6V Supply Voltage −0.3V to VCC+0.
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LMH0034 www.ti.com SNLS213H – JANUARY 2006 – REVISED APRIL 2013 AC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1). Symbol Parameter BRMIN Minimum Input Data Rate BRMAX Maximum Input Data Rate Jitter for various cable lengths (with equalizer pathological) tr,tf tOS Conditions Typ Max 125 Units Mbps 1485 Mbps 270 Mbps, Belden 1694A, 400 meters (2) 0.2 UI 270 Mbps, Belden 8281, 280 meters (2) 0.2 UI 1.
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LMH0034 SNLS213H – JANUARY 2006 – REVISED APRIL 2013 www.ti.com PIN DESCRIPTIONS Pin # Name Description 1 CLI Cable length indicator. Provides a voltage inversely proportional to the cable length being equalized. 2 VCC Positive power supply (+3.3V). 3 VEE Negative power supply (ground). 4 SDI Serial data true input. 5 SDI Serial data complement input. 6 VEE Negative power supply (ground). 7 AEC+ AEC loop filter external capacitor (1µF) positive connection.
PAGE 5
LMH0034 www.ti.com SNLS213H – JANUARY 2006 – 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.
PAGE 6
LMH0034 SNLS213H – JANUARY 2006 – REVISED APRIL 2013 www.ti.com INPUT INTERFACING The LMH0034 accepts either differential or single-ended input. The input must be AC coupled. Transformer coupling is not supported. The LMH0034 correctly handles equalizer pathological signals for standard definition and high definition serial digital video, as described in SMPTE RP 178 and RP 198, respectively. OUTPUT INTERFACING The SDO and SDO outputs are internally loaded with 50Ω.
PAGE 7
LMH0034 www.ti.com SNLS213H – JANUARY 2006 – REVISED APRIL 2013 SUPPLY CURRENT (mA) 75 70 65 60 55 0 100 200 300 400 BELDEN 1694A CABLE LENGTH (m) Figure 4. Supply Current vs.
PAGE 8
LMH0034 SNLS213H – JANUARY 2006 – REVISED APRIL 2013 www.ti.com REVISION HISTORY Changes from Revision G (April 2013) to Revision H • 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 1-Nov-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
PAGE 11
PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device LMH0034MAX/NOPB Package Package Pins Type Drawing SOIC D 16 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 16.4 Pack Materials-Page 1 6.5 B0 (mm) K0 (mm) P1 (mm) 10.3 2.3 8.0 W Pin1 (mm) Quadrant 16.
PAGE 12
PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMH0034MAX/NOPB SOIC D 16 2500 367.0 367.0 35.
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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.