The AD8387 is a 12-bit, 12-channel, high-performance LCD DecDriver that provides high accuracy and high resolution video output.
The AD8387 DecDriver provides dual, fast‑latched 12‑bit inputs that drive twelve high‑voltage LCD outputs. It features 12‑bit input resolution, 35 ns settling time into 150 pF loads, 420 V/µs slew rate, and programmable video reference and contrast levels. The device is supplied in an 80‑lead TQFP E‑pad package and operates from 11‑18 V AVCC and 3.3‑3.6 V DVCC.
Designed for LCD micro‑display drivers, the AD8387 includes overload protection via an output current limiter and a thermal switch, and requires careful PCB thermal‑pad and via design. Power‑on/off sequencing and grounded‑output mode procedures are detailed to ensure reliable operation across the 0 °C to 85 °C temperature range.
| Input resolution | 12 bits |
|---|---|
| Settling time (0.25% into 150 pF) | 35 ns |
| Slew rate | 420 V/µs |
| Supply voltage (AVCC) | 11 V – 18 V |
| Supply voltage (DVCC) | 3.3 V – 3.6 V |
| Maximum output current per channel | 100 mA (average) |
| Operating temperature range | 0 °C to 85 °C |
Each output is internally limited to an average of 100 mA to protect against overload.
It uses an output current limiter together with a thermal switch that can be enabled or disabled via the TSW pin.
Turn on AVCC, then VRH, then VRL, then DVCC, disable the thermal switch (TSW = LOW), and finally turn on the input signals.
The device is offered in an 80‑lead TQFP package with an exposed die paddle (E‑pad).