LH1687 Overview
Description
The LH1687 is a 240-output TFT-LCD source driver IC used in such products as TV sets. The LH1687 samples and holds three video signals of R, G and B by sample and hold circuits synchronized with the CK, and simultaneously outputs the LCD drive voltage from all output pins.
Key Features
- Number of LCD drive outputs : 240
- Output circuit form : Push pull output
- Sampling timing : Normal sampling operation and 3-point simultaneous sampling operation can be selected
- Video signal setting : Available for stripe pixel array panels and delta pixel array panels using mode setting circuit
- Sampling clock frequency : 25 MHz (MAX.)
- Cascade connection
- Sampling sequence : Output shift direction can be selected OS1/OS240 or OS240/OS1
- Output amplitude voltage : 4.8 Vp-p (at 5.0 V supply voltage)
- Supply voltages – VCCL (for logic system) : +3.0 to +5.5 V – VCCA (for LCD drive system) : +3.0 to +5.5 V
- Operating temperature : –30 to + 85 ˚C
