The AD664 is a four-channel 12-bit analog-to-digital converter with read/write capability, reset to zero, multiplication, and double-buffered latches.
The AD664 integrates four complete 12‑bit voltage‑output DACs on a single monolithic IC. Each DAC features double‑buffered latches, a data readback function, and a reset‑to‑zero control pin. The device supports 4‑, 8‑ or 12‑bit parallel words and offers both unipolar and bipolar output ranges with programmable gain.
The datasheet provides electrical specifications, pin configurations for 44‑pin and 28‑pin packages, and performance data such as linearity, settling time, and crosstalk. It also includes grounding recommendations, power‑supply requirements, and application notes for test equipment, robotics, and instrumentation.
| Resolution | 12 bits |
|---|---|
| Output Current | 5 mA |
| Load Resistance | 2 kΩ |
| Settling Time | <10 µs |
| Linearity Error | 0.5 LSB (typical) |
| Power Supply (logic) | +5 V |
| Power Supply (analog) | +12 V to +15 V, –12 V to –15 V |
The AD664 contains four complete 12‑bit voltage‑output DACs on one chip.
Each DAC output can source or sink up to 5 mA of current.
When asserted, the Reset‑to‑Zero pin forces all DAC outputs to 0 V.