Texas Instruments LMH1208 Dual Cable Driver
Texas Instruments LMH1208 Dual Cable Driver is a 12G UHD-SDI low power dual output cable driver. This device supports SMPTE video rates up to 11.88Gbps, enabling UHD video for 4K/8K applications. The additional equalized 100Ω driver output on the host side can be used for monitoring or signal distribution. The programmable PCB input equalizer provides a high-frequency boost to reduce inter-symbol interference (ISI) induced by PCB board trace. The integrated 75Ω termination and return loss network at both cable driver outputs facilitate overall system design in meeting stringent SMPTE return loss requirements. The LMH1208 provides selectable slew rates for data rates up to 11.88Gbps. A pin, SPI, or SMBus control can control the output slew rate and amplitude.
Features
- Supports ST-2082-1 (12G), ST-2081-1 (6G), ST-424 (3G), ST-292 (HD), and ST-259 (SD)
- Compatible with DVB-ASI and AES10 (MADI)
- Dual differential output cable drivers
- On-chip 75Ω termination and return loss compensation network
- Host-side equalized 100Ω loop-back output
- Programmable slew rate control on 75Ω outputs
- Programmable pre-emphasis and output amplitude on 75Ω outputs
- Programmable de-emphasis and output amplitude on 100Ω output
- Polarity inversion on 75Ω and 100Ω outputs
- Automatic power saving in absence of input signal
- 25mW (Typical) power consumption
- Power-down control through ENABLE pin
- Single 2.5V supply
- 200mW (Typical) power consumption
- Programmable through pins, SPI, or SMBus interface
- –40°C to +85°C Operating temperature range
- 5mm×5mm, 32-pin WQFN Package
Applications
- SMPTE Compatible serial digital interface
- UHDTV/4K/8K/HDTV/SDTV Video
- Broadcast video routers, switchers, distribution amplifiers, and monitors
- Digital video processing and editing
Simplified Block Diagram
Publicerad: 2017-08-09
| Uppdaterad: 2022-04-05