LMH0387SL/NOPB National Semiconductor, LMH0387SL/NOPB Datasheet

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LMH0387SL/NOPB

Manufacturer Part Number
LMH0387SL/NOPB
Description
IC EQUALIZER DRIVER 48-TCSP
Manufacturer
National Semiconductor
Datasheet

Specifications of LMH0387SL/NOPB

Applications
Amplifier
Interface
SPI Serial
Voltage - Supply
3.3V
Package / Case
*
Mounting Type
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
© 2011 National Semiconductor Corporation
3 Gbps HD/SD SDI Configurable I/O Adaptive Cable
Equalizer / Cable Driver
General 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. The same I/O pin is used both for the input and the
output functions of the device, allowing the system designer
the flexibility to use a BNC attached to the device as either an
input or an output.
The LMH0387 offers designers flexibility in system design
and quicker time to market. The device operates over a wide
range of data rates from 125 Mbps to 2.97 Gbps (DC to
2.97 Gbps when driving cable) and supports SMPTE 424M,
SMPTE 292M, SMPTE 344M, and SMPTE 259M. The return
loss network is integrated within the device so no external
components are required to meet the SMPTE return loss
specification.
In the input mode, the LMH0387 features include a power-
saving sleep mode, programmable output common mode
voltage and swing, cable length indication, launch amplitude
optimization, input signal detection, and an SPI interface. In
the output mode, the LMH0387 features include two se-
lectable slew rates for SMPTE 424M / 292M and SMPTE
259M compliance, and output driver power down control.
The device is available in a 7 x 7 mm 48-pin laminate Thin
Chip Scale Package (TCSP).
Typical Application
301044
LMH0387
Features
Applications
SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE
259M compliant
Supports DVB-ASI at 270 Mbps
Data rates: 125 Mbps to 2.97 Gbps when receiving (DC to
2.97 Gbps when driving cable)
Equalizes up to 120 meters of Belden 1694A at 2.97 Gbps,
up to 200 meters of Belden 1694A at 1.485 Gbps, or up to
400 meters of Belden 1694A at 270 Mbps
Integrated return loss network (no external components
required)
Power saving modes
Cable driver selectable slew rate
Internally terminated 100Ω LVDS receiver outputs with
programmable common mode voltage and swing
Programmable launch amplitude optimization for receiver
Cable length indication
Single 3.3V supply operation
48-pin laminate TCSP package
Industrial temperature range: −40°C to +85°C
SMPTE 424M, SMPTE 292M, and SMPTE 259M serial
digital interfaces
Digital video routers and switches
Distribution amplifiers
February 25, 2011
www.national.com
30104423

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LMH0387SL/NOPB Summary of contents

Page 1

... SMPTE 424M / 292M and SMPTE 259M compliance, and output driver power down control. The device is available 48-pin laminate Thin Chip Scale Package (TCSP). Typical Application © 2011 National Semiconductor Corporation LMH0387 Features ■ SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M compliant ■ ...

Page 2

Typical Application Circuit www.national.com 2 30104401 ...

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Connection Diagram Ordering Information Part Number LMH0387SL 48-Pin Laminate TCSP, 7.0 x 7.0 x 0.8 mm, 0.5 mm pitch LMH0387SLE 48-Pin Laminate TCSP, 7.0 x 7.0 x 0.8 mm, 0.5 mm pitch LMH0387SLX 48-Pin Laminate TCSP, 7.0 x 7.0 x ...

Page 4

Pin Descriptions Pin Name 1, 4-7, 9–16, RSVD N/A 42, 46- Power CCTX 8 BNC_IO I/O, SDI 17 TERM I, SDI RX 18 SPI_EN I, LVCMOS 19, 24, 25, 31, V Power EE 32, 35, 37, ...

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Absolute Maximum Ratings Supply Voltage Input Voltage (all inputs) Storage Temperature Range Junction Temperature Package Thermal Resistance  θ 48-pin TCSP JA  θ 48-pin TCSP JC ESD Rating (HBM) ESD Rating (MM) ESD Rating (CDM) Control Pin Electrical Characteristics Over Supply ...

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Output Mode (Cable Driver) DC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified Symbol Parameter V Output Common Mode Voltage CMOUT V Output Voltage Swing OUT V Input Common Mode Voltage CMIN V Input Voltage Swing ...

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Output Mode (Cable Driver) AC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified Symbol Parameter DR Maximum Input Data Rate MAX t Additive Jitter jit Output Rise Time, Fall Time r f Δt ...

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Note 10: Return loss is dependent on board design. The LMH0387 exceeds this specification on the SD387 evaluation board. Note 11: Cable driver additive jitter is measured with the input AC coupled. Timing Diagrams FIGURE 1. LVDS Output Voltage, Offset, ...

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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 designed to allow the sharing of a single BNC connector ...

Page 10

FIGURE 4. CD vs. Belden 1694A Cable Length THRESH AUTO SLEEP The LMH0387 equalizer is set for auto sleep operation by de- fault. The equalizer portion of the LMH0387 powers down when no input signal is detected on the BNC_IO ...

Page 11

SPI register 02h. For correct equalizer operation with the default SMPTE 800 mV launch amplitude and no external attenuation, P-P the equalizer launch amplitude fine tuning must be set to the “nominal” ...

Page 12

Application Information PCB LAYOUT RECOMMENDATIONS For information on layout and soldering of the laminate TCSP package, pease refer to the following application note: AN-1125, “Laminate CSP/FBGA.” For a CSP package general requirement not to have any metal ...

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Typical Performance Characteristics Equalizer Output at 2.97 Gbps with 120m Belden 1694A H: 100 ps / div div (SDO output shown) Cable Driver Output at 2.97 Gbps 30104421 H: 62 div, V: 100 mV ...

Page 14

SPI Registers Address R/W Name Bits Field 00h R/W General Control 4:3 1:0 01h R/W Output Driver 7:5 4:2 1:0 www.national.com TABLE 1. SPI Registers Default Description 7 Carrier Detect Read only carrier detected on BNC_IO pin. 1: ...

Page 15

Address R/W Name Bits Field 02h R/W Launch 7 Amplitude 6:3 2:0 03h R CLI 7:3 2:0 Default Description Coarse Control 0 Coarse launch amplitude optimization for equalizer input. 0: Normal optimization with no external attenuation (800 mV launch amplitude). ...

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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 48-Pin Laminate TCSP Order Number LMH0387SL NS Package Number SLD48A 16 ...

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Notes 17 www.national.com ...

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... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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