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LMH0387

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SNLS315G –APRIL 2010–REVISED APRIL 2013

LMH0387 3 Gbps HD/SD SDI Configurable I/O Adaptive Cable Equalizer / Cable Driver

Check for Samples: LMH0387

FEATURES

DESCRIPTION

The LMH0387 3 Gbps HD/SD SDI Configurable I/O

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

Adaptive Cable Equalizer / Cable Driver provides a

SMPTE 259M Compliant

single chip interface to a BNC. The device can be

• Supports DVB-ASI at 270 Mbps

configured either in the input mode as an equalizer to

• Data Rates: 125 Mbps to 2.97 Gbps when

receive data over coaxial cable or in the output mode

as a cable driver to transmit data over coaxial cable.

Receiving (DC to 2.97 Gbps when Driving

The same I/O pin is used both for the input and the

Cable)

output functions of the device, allowing the system

• Equalizes up to 120 Meters of Belden 1694A at

designer the flexibility to use a BNC attached to the

2.97 Gbps, up to 200 Meters of Belden 1694A

device as either an input or an output.

at 1.485 Gbps, or up to 400 Meters of Belden

The LMH0387 offers designers flexibility in system

1694A at 270 Mbps

design and quicker time to market. The device

• Integrated Return Loss Network (No External

operates over a wide range of data rates from 125

Components Required)

Mbps to 2.97 Gbps (DC to 2.97 Gbps when driving

• Power Saving Modes

cable) and supports SMPTE 424M, SMPTE 292M,

SMPTE 344M, and SMPTE 259M. The return loss

• Cable Driver Selectable Slew Rate

network is integrated within the device so no external

• Internally Terminated 100Ω LVDS Receiver

components are required to meet the SMPTE return

Outputs with Programmable Common Mode

loss specification.

Voltage and Swing

In the input mode, the LMH0387 features include a

• Programmable Launch Amplitude Optimization

power-saving sleep mode, programmable output

for Receiver

common mode voltage and swing, cable length

• Cable Length Indication

indication, launch amplitude optimization, input signal

detection, and an SPI interface. In the output mode,

• Single 3.3V Supply Operation

the LMH0387 features include two selectable slew

• 48-Pin Laminate TLGA Package

rates for SMPTE 424M / 292M and SMPTE 259M

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

compliance, and output driver power down control.

The device is available in a 7 x 7 mm 48-pin laminate

APPLICATIONS

Thin Chip Scale Package (TLGA).

• SMPTE 424M, SMPTE 292M, and SMPTE 259M

Serial Digital Interfaces

• Digital Video Servers and Modular Equipment

• Video Encoders and Decoders

• Distribution Amplifiers

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 (23 pages)

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LMH0387 www.ti.com SNLS315G – APRIL 2010 – REVISED APRIL 2013 LMH0387 3 Gbps HD/SD SDI Configurable I/O Adaptive Cable Equalizer / Cable Driver Check for Samples: LMH0387 FEATURES DESCRIPTION • The LMH0387 3 Gbps HD/SD SDI Configurable I/O Adaptive Cable Equalizer / Cable Driver provides a single chip interface to a BNC. The device can be configured either in the input mode as an equalizer to receive data over coaxial cable or in the output mode as a cable driver to transmit data over coaxial cable.
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LMH0387 SNLS315G – APRIL 2010 – REVISED APRIL 2013 www.ti.com Typical Application Existing Solution LMH0387 Solution VCC Cable Driver LMH0387 Configurable I/O FPGA FPGA Cable Equalizer Typical Application Circuit VCC 4.7 PF TX_EN 715: SD/HD RREF TERMTX 75: TX_EN SD/HD LMH0387 4.7 PF SDI Configurable SDI In/Out Cable Driver 100: SDI 4.7 PF 4.7 PF BNC_IO SDO Cable Equalizer 4.7 PF SCK MOSI MISO SS CDTHRESH CD SPI_EN AEC- AEC+ TERMRX SDO To FPGA 4.7 PF 1.
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LMH0387 www.ti.
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LMH0387 SNLS315G – APRIL 2010 – REVISED APRIL 2013 www.ti.com PIN DESCRIPTIONS Pin Name Description 1, 4-7, 9–16, 42, 46-48 RSVD N/A Do not connect. 2, 3, 43 VCCTX Power Positive power supply for transmitter (+3.3V). 8 BNC_IO I/O, SDI Serial digital interface input or output for connection to a BNC. Connect this pin to the BNC via an AC coupling capacitor (nominally 4.7μF). 17 TERMRX I, SDI Termination for unused receiver (equalizer) input. This network should consist of a 1.
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LMH0387 www.ti.com SNLS315G – APRIL 2010 – REVISED APRIL 2013 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) Supply Voltage 4.0V −0.3V to VCC+0.
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LMH0387 SNLS315G – APRIL 2010 – REVISED APRIL 2013 www.ti.com Control Pin Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1) (2). Symbol Parameter Conditions VIH Input Voltage High Level VIL Input Voltage Low Level VOH Output Voltage High Level IOH = -2 mA VOL Output Voltage Low Level IOL = +2 mA (1) (2) Reference Logic Inputs Logic Outputs Min Typ Max Units 2.0 VCC V VEE 0.8 V 2.4 V 0.
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LMH0387 www.ti.com SNLS315G – APRIL 2010 – REVISED APRIL 2013 Output Mode (Cable Driver) DC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1) (2). Symbol Parameter VCMOUT Output Common Mode Voltage VOUT Output Voltage Swing Conditions Reference Min Typ BNC_IO Max Units VCC – VOUT RREF = 715Ω 1% 720 880 mVP-P 0.
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LMH0387 SNLS315G – APRIL 2010 – REVISED APRIL 2013 www.ti.com Output Mode (Cable Driver) AC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1). Symbol Parameter DRMAX Maximum Input Data Rate tjit Additive Jitter tr, tf Output Rise Time, Fall Time Conditions Reference Min SDI, SDI 2.
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LMH0387 www.ti.com SNLS315G – APRIL 2010 – REVISED APRIL 2013 Timing Diagrams VODVOS VOD+ 80% 80% + VOD VSSP-P 0V differential 20% - VOD 20% VSSP-P = (VOD+) – (VOD-) tr tf Figure 1. LVDS Output Voltage, Offset, and Timing Parameters SS (host) tSSSU tPH tPL tSSH SCK (host) tH tSU MOSI (host) MISO (device) tSSOF 0 A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 Hi-Z Figure 2.
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LMH0387 SNLS315G – APRIL 2010 – REVISED APRIL 2013 www.ti.com DEVICE DESCRIPTION The LMH0387 3 Gbps HD/SD SDI Configurable I/O Adaptive Cable Equalizer / Cable Driver is used at the input or output port of digital video equipment. It is designed to allow the sharing of a single BNC connector for either input or output. CONFIGURING THE INPUT (EQUALIZER) OR OUTPUT (CABLE DRIVER) MODE The LMH0387 must be configured in either the input mode as an equalizer, or the output mode as a cable driver.
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LMH0387 www.ti.com SNLS315G – APRIL 2010 – REVISED APRIL 2013 The default differential output swing (VSSP-P) is 700 mVP-P. The differential output swing may be adjusted via the SPI in 100 mV increments from 400 mVP-P to 800 mVP-P (see OUTPUT DRIVER ADJUSTMENTS (REGISTER 01h) in the Input Mode (Equalizer) SPI Register Access section). The LMH0387 equalizer output should be DC coupled to the input of the receiving device as long as the common mode ranges of both devices are compatible.
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LMH0387 SNLS315G – APRIL 2010 – REVISED APRIL 2013 www.ti.com In auto sleep mode, the time to power down the equalizer when the input signal is removed is less than 200 µs and should not have any impact on the system timing requirements. The equalizer will wake up automatically once an input signal is detected, and the delay between signal detection and full functionality of the equalizer is negligible. The overall system will be limited only by the settling time constant of the equalizer adaptation loop.
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LMH0387 www.ti.com SNLS315G – APRIL 2010 – REVISED APRIL 2013 OUTPUT DRIVER ADJUSTMENTS (REGISTER 01h) The equalizer output driver swing (amplitude) and offset voltage (common mode voltage) are adjustable via SPI register 01h. Output Swing The output swing is adjustable via bits [7:5] of SPI register 01h. The default value for these register bits is “011” for a peak to peak differential output voltage of 700 mVP-P. The output swing can be adjusted in 100 mV increments from 400 mVP-P to 800 mVP-P.
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LMH0387 SNLS315G – APRIL 2010 – REVISED APRIL 2013 www.ti.com 30 CLI (decimal value) 25 20 15 10 5 0 0 50 100 150 200 250 300 350 400 BELDEN 1694A CABLE LENGTH (m) Figure 5. CLI vs. Belden 1694A Cable Length OUTPUT MODE (CABLE DRIVER) DESCRIPTION INPUT INTERFACING The LMH0387 cable driver accepts differential input signals which can be DC or AC coupled. OUTPUT INTERFACING The LMH0387 cable driver uses 75Ω internally terminated current mode outputs.
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LMH0387 www.ti.com SNLS315G – APRIL 2010 – REVISED APRIL 2013 The SMPTE 424M, 292M, and 259M standards have stringent requirements for the input and output return loss of receivers and transmitters, which essentially specify how closely they must resemble a 75Ω network. Any nonidealities in the network between the BNC and the LMH0387 will degrade the return loss.
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LMH0387 SNLS315G – APRIL 2010 – REVISED APRIL 2013 www.ti.com SPI Registers Table 1. SPI Registers Address R/W Name 00h R/W General Control Bits 16 Output Driver Description Carrier Detect 6 Mute 0 0: Normal operation. 1: Equalizer outputs muted. 5 Reserved 0 Reserved as 0. Always write 0 to this bit. Sleep Mode 01 Equalizer sleep mode control. Sleep has precedence over Mute. 00: Never sleep. Disable sleep mode (force equalizer to stay enabled). 01: Auto sleep.
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LMH0387 www.ti.com SNLS315G – APRIL 2010 – REVISED APRIL 2013 Table 1. SPI Registers (continued) Address R/W Name 02h R/W Launch Amplitude 03h R CLI Bits 7 Field Coarse Control Default Description 0 Coarse launch amplitude optimization for equalizer input. 0: Normal optimization with no external attenuation (800 mVP-P launch amplitude). 1: Optimized for 6 dB external attenuation (400 mVP-P launch amplitude).
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LMH0387 SNLS315G – APRIL 2010 – REVISED APRIL 2013 www.ti.com REVISION HISTORY Changes from Revision F (April 2013) to Revision G • 18 Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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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 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LMH0387SL/NOPB TLGA NPD 48 1000 330.0 16.4 7.3 7.3 1.3 12.0 16.0 Q1 LMH0387SLE/NOPB TLGA NPD 48 250 178.0 16.4 7.3 7.3 1.3 12.0 16.
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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) LMH0387SL/NOPB TLGA NPD 48 1000 367.0 367.0 38.0 LMH0387SLE/NOPB TLGA NPD 48 250 213.0 191.0 55.
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MECHANICAL DATA NPD0048A SLD48A (Rev B) www.ti.
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