The ADD8701 is a 12-channel gamma buffer with VCOM buffer for TFT-LCD applications. The device operates in either single-supply or dual-supply mode and supports 7V to 16V supply voltage. The device features fast settling time and low power consumption.
The ADD8701 from Analog Devices is a low‑cost, 12‑channel buffer amplifier and VCOM driver designed for high‑resolution TFT‑LCD panels. It operates from a single supply (7 V‑16 V) or dual supplies (+3.5 V‑+8 V) and provides high slew rate, low offset voltage, and strong capacitive load drive capability.
The device is supplied in a 32‑lead LFCSP package and includes internal ESD protection on all inputs and outputs. Typical applications include LCD gamma reference buffers and VCOM buffering for TFT displays, with continuous output currents of 10 mA (buffers) and 35 mA (VCOM).
| Supply Voltage (Vpp) | 7 V – 16 V |
|---|---|
| Continuous Output Current (Buffers) | 10 mA |
| Continuous Output Current (VCOM) | 35 mA |
| Slew Rate | 6 V/µs |
| Offset Voltage (max) | 15 mV |
| Peak Output Current (Buffers) | 150 mA |
The device operates from 7 V to 16 V supply voltage.
The VCOM buffer can deliver up to 35 mA of continuous output current.