Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Video editing Serial driver WQFN 16 (4x4)

LMH0356

3G/HD/SD

SDI Reclocker

SDI In

ENABLE

SD/HD

Clock or

Second

Data Output

FAULT

SDA SCL

LMH0303

3G/HD/SD

SDI Cable Driver

Microcontroller

FPGA

SMBus

Data

SMBus

Clock

SDI

SDI Out

LMH0303

www.ti.com

SNLS285G –APRIL 2008–REVISED APRIL 2013

3 Gbps HD/SD SDI Cable Driver with Cable Detect

Check for Samples: LMH0303

FEATURES

DESCRIPTION

The LMH0303 3 Gbps HD/SD SDI Cable Driver with

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

Cable Detect is designed for use in SMPTE 424M,

SMPTE 259M Compliant

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

• Data Rates to 2.97 Gbps

serial digital video applications. The LMH0303 drives

• Supports DVB-ASI at 270 Mbps

75Ω transmission lines (Belden 1694A, Belden 8281,

or equivalent) at data rates up to 2.97 Gbps.

• Cable Detect on Output

The LMH0303 includes intelligent sensing capabilities

• Loss of Signal Detect at Input

to improve system diagnostics. The cable detect

• Output Driver Power Down Control

feature senses near-end termination to determine if a

• Typical Power Consumption: 130 mW in SD

cable is correctly attached to the output BNC. Input

Mode and 155 mW in HD Mode

loss of signal (LOS) detects the presence of a valid

signal at the input of the cable driver. These sensing

• Power Save Mode Typical Power

features may be used to alert the user of a system

Consumption: 4 mW

fault and activate a deep power save mode, reducing

• Single 3.3V Supply Operation

the cable driver's power consumption to 4 mW. These

• Differential Input

features are accessible via an SMBus interface.

• 75Ω Differential Output

The LMH0303 provides two selectable slew rates for

• Selectable Slew Rate

SMPTE 259M and SMPTE 424M / 292M compliance.

The output amplitude is adjustable ±10% in 5 mV

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

steps via the SMBus.

• 16-pin WQFN Package

The LMH0303 is powered from a single 3.3V supply.

• Footprint Compatible With the LMH0302

Power consumption is typically 130 mW in SD mode

and 155 mW in HD mode. The LMH0303 is available

APPLICATIONS

in a 16-pin WQFN package.

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

SMPTE 259M Serial Digital Interfaces

• Digital Video Routers and Switches

• Distribution Amplifiers

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 (19 pages)

PAGE 1
LMH0303 www.ti.com SNLS285G – APRIL 2008 – REVISED APRIL 2013 3 Gbps HD/SD SDI Cable Driver with Cable Detect Check for Samples: LMH0303 FEATURES DESCRIPTION • The LMH0303 3 Gbps HD/SD SDI Cable Driver with Cable Detect is designed for use in SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M serial digital video applications. The LMH0303 drives 75Ω transmission lines (Belden 1694A, Belden 8281, or equivalent) at data rates up to 2.97 Gbps.
PAGE 2
LMH0303 SNLS285G – APRIL 2008 – REVISED APRIL 2013 www.ti.com VEE 3 RREF 4 NC NC FAULT 13 LMH0303 (top view) 5 6 7 8 SCL 2 14 SDA SDI 15 ENABLE 1 16 RSTI SDI RSTO Connection Diagram 12 SDO 11 SDO 10 SD/HD 9 VCC The exposed die attach pad is a negative electrical terminal for this device. It should be connected to the negative power supply voltage. Figure 1. 16-Pin WQFN Package Number RUM PIN DESCRIPTIONS Pin Description 1 SDI Serial data true input.
PAGE 3
LMH0303 www.ti.com SNLS285G – APRIL 2008 – 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) −0.5V to 3.6V Supply Voltage −0.3V to VCC+0.
PAGE 4
LMH0303 SNLS285G – APRIL 2008 – REVISED APRIL 2013 www.ti.com DC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1) (2). Symbol Parameter VCMIN Input Common Mode Voltage VSDI Input Voltage Swing VCMOUT Output Common Mode Voltage VSDO Output Voltage Swing VIH Input Voltage High Level VIL InputVoltage Low Level ICC Supply Current Conditions Reference SDI, SDI Differential Min Typ 1.
PAGE 5
LMH0303 www.ti.com SNLS285G – APRIL 2008 – REVISED APRIL 2013 AC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1). Symbol Parameter DRSDI Input Data Rate tjit Additive Jitter tr,tf Conditions Reference Min SDI, SDI 2.97 Gbps Output Rise Time, Fall Time SDO, SDO Mismatch in Rise/Fall Time Duty Cycle Distortion RLSDO Output Return Loss Units 2970 Mbps psP-P 1.
PAGE 6
LMH0303 SNLS285G – APRIL 2008 – REVISED APRIL 2013 www.ti.com DEVICE OPERATION INPUT INTERFACING The LMH0303 accepts either differential or single-ended input. For single-ended operation, the unused input must be properly terminated. OUTPUT INTERFACING The LMH0303 uses current mode outputs. Single-ended output levels are 800 mVP-P into 75Ω AC-coupled coaxial cable with an RREF resistor of 750Ω. The RREF resistor is connected between the RREF pin and VCC.
PAGE 7
LMH0303 www.ti.com SNLS285G – APRIL 2008 – REVISED APRIL 2013 In applications where there might be several LMH0303s, the SDA, SCL, and FAULT pins can be shared. The SCL, SDA, and FAULT pins are open drain and require external pullup resistors. Multiple LMH0303s may have the FAULT pin wire ORed. This signal becomes active when either loss of signal is detected or any termination faults are detected. The registers may be read in order to determine the cause.
PAGE 8
LMH0303 SNLS285G – APRIL 2008 – REVISED APRIL 2013 www.ti.com APPLICATION INFORMATION Figure 3 shows the application circuit for the LMH0303. VCC VCC 10 k: FAULT 75: 0.1 PF 75: RSTO 13 FAULT 14 15 SD/HD 4.7 PF Coaxial Cable 75: 4.7 PF Coaxial Cable 12 11 10 75: 75: 6.8 nH 9 DAP RSTI 5 VCC SCL RREF VCC 75: 8 4 LMH0303 VEE SDA 3 SDO 7 0.1 PF SDI ENABLE 2 SDO SDI 6 1 49.9: Differential Input NC RSTO 49.9: NC 16 6.8 nH 750: RSTI VCC ENABLE SDA SCL VCC 0.
PAGE 9
LMH0303 www.ti.com SNLS285G – APRIL 2008 – REVISED APRIL 2013 3.3V RSTO RSTI RSTO SDA RSTI LMH0303 #N SCL RSTO SCL GPO SCL LVCMOS GPIO SMBus Interface RSTI SDA Host (e.g. FPGA) LMH0303 #2 SDA LMH0303 #1 SCL SDA Figure 4. SMBus Configuration for Multiple LMH0303 Cable Drivers The RSTI pin of the first device is controlled by the system with a GPO pin from the host. The first LMH0303 RSTO pin is then daisy chained to the next device's RSTI pin.
PAGE 10
LMH0303 SNLS285G – APRIL 2008 – REVISED APRIL 2013 www.ti.com SMBUS REGISTERS Table 1. SMBus Registers Address R/W Name Bits Field Default Description 00h R/W ID 7:1 DEVID 0010111 Device ID. Writing this register will force the RSTO pin high. Further accesses to the device must use this 7-bit address. 0 RSVD 0 01h R STATUS 7:3 RSVD 00000 02h 10 R/W MASK Reserved as 0. Always write 0 to this bit. Reserved. 2 TFN 0 Termination Fault for SDI. 0: No Termination Fault Detected.
PAGE 11
LMH0303 www.ti.com SNLS285G – APRIL 2008 – REVISED APRIL 2013 Table 1. SMBus Registers (continued) Address R/W Name 03h R/W DIRECTION 04h R/W OUTPUT Bits Field Default Description 7 HDTFThreshLSB 1 Least Significant Bit for HDTFThresh detection threshold. Combines with HDTFThresh bits in register 04h. 6 SDTFThreshLSB 1 Least Significant Bit for SDTFThresh detection threshold. Combines with SDTFThresh bits in register 05h.
PAGE 12
LMH0303 SNLS285G – APRIL 2008 – REVISED APRIL 2013 www.ti.com Table 1. SMBus Registers (continued) 12 Address R/W Name 05h R/W OUTPUTCTRL Bits Field Default 7 RSVD 0 Reserved as 0. Always write 0 to this bit. 6 FLOSOF 0 Force LOS to always OFF in regard to its effect on the output signal. This forces the device into either the mute or “add offset” state. The LOS bit in register 01h still reflects the correct state of LOS.
PAGE 13
LMH0303 www.ti.com SNLS285G – APRIL 2008 – REVISED APRIL 2013 Table 1. SMBus Registers (continued) Address R/W 09h R 0Ah 0Bh R R Name Bits Field Default REV 7:5 RSVD 000 Reserved. 4:3 DIREV 10 Die Revision. 2:0 PARTID 011 Part Identifier. Note that single output devices (LMH0303) have the LSB=1. Dual output devices (LMH0307) have the LSB=0. 7:5 RSVD 000 Reserved.
PAGE 14
LMH0303 SNLS285G – APRIL 2008 – REVISED APRIL 2013 www.ti.com REVISION HISTORY Changes from Revision F (April 2013) to Revision G • 14 Page Changed layout of National Data Sheet to TI format ..........................................................................................................
PAGE 15
PACKAGE OPTION ADDENDUM www.ti.
PAGE 16
PACKAGE MATERIALS INFORMATION www.ti.com 24-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing LMH0303SQ/NOPB WQFN RUM 16 LMH0303SQE/NOPB WQFN RUM LMH0303SQX/NOPB WQFN RUM 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 4.3 4.3 1.3 8.0 12.0 Q1 16 250 178.0 12.4 4.3 4.3 1.3 8.0 12.0 Q1 16 4500 330.0 12.4 4.3 4.3 1.3 8.0 12.
PAGE 17
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) LMH0303SQ/NOPB WQFN RUM 16 1000 213.0 191.0 55.0 LMH0303SQE/NOPB WQFN RUM 16 250 213.0 191.0 55.0 LMH0303SQX/NOPB WQFN RUM 16 4500 367.0 367.0 35.
PAGE 18
MECHANICAL DATA RUM0016A SQB16A (Rev A) www.ti.
PAGE 19
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.