Advanced Analog Technology AAT1314
The AAT1314 provides a 14-channel programmable gamma reference and a programmable VCOM reference for applications in TFT LCD Panel. Each of the 14-channel gamma reference voltage is generated using a 10-bit digital-to-analog converter (DAC) together with a buffer via I2C control. The 14-channel gamma references support dynamic switching between two gamma curves by selecting between two different Banks of data via BKSEL select pin.| Part No. | AAT1314 |
|---|---|
| Datasheet | AAT1314 Download |
| Manufacturer |  Advanced Analog Technology |
| Description | PROGRAMMABLE GAMMA AND VCOM BUFFERS |
| Buy | Stock & Price |
FEATURES
● Fully I2C Interface Control● Input Supply Voltage Range
● 2.3V to 3.6V Logic Supply Range
● 6.5V to 18V Analog Supply Range
● 14-Channel Programmable Gamma Buffers
● 10-Bit, 1024-Step Resolution
● ±100mA Output Short Circuit
● 10V/μs Slew Rate
● Bank Selection
● REF Voltage for High Accuracy DAC reference
● 1-Channel Programmable VCOM Buffer
● 7-Bits, 128-Step Adjustable Sink Current Output
● ±200mA Output Short Circuit
● 20V/μs Slew Rate
● Integrated Non-Volatile Memory (NVM)
● WQFN32L-5mmx5mmx0.75mm Package Available PIN CONFIGURATION
GENERAL DESCRIPTION
The AAT1314 also features a programmable operational amplifier that drives the LCD backplane (VCOM). This unity-gain buffer is capable of rail-to-rail input and output, ±200mA output short-circuit current, and a 20V/μs slew rate. The VCOM buffer voltage is I2C programmed using 7-bits. The digital-to-analog converter (DAC) sinks current from an external resistor-divider string to create the VCOM reference voltage, which then serves as the input to a voltage buffer capable of driving high output current.
