The AD7985 is a 16-bit, 2.5 MSPS, low-power ADC in LFCSP. The AD7985 features 16-bit resolution, no missing codes, 2.5 MSPS throughput, low power consumption (15.5 mW) and a 4.096 V internal reference.
The AD7985 is a 16‑bit successive‑approximation ADC offering up to 2.5 MSPS throughput in turbo mode and 2.0 MSPS in low‑power mode. It features an internal 4.096 V reference, low power dissipation (15.5 mW at 2.5 MSPS with internal reference), and a versatile 1.8‑2.7 V digital I/O supply. The device is supplied in a 20‑lead LFCSP package and operates from –40 °C to +85 °C.
The datasheet provides detailed specifications, timing diagrams, pin descriptions, layout recommendations, and application information for high‑speed data‑acquisition, communications, ATE, and medical instrumentation. It also describes daisy‑chain capability, busy‑indicator operation, and power‑supply decoupling guidelines for optimal performance.
| Resolution | 16 Bits |
|---|---|
| Maximum Throughput | 2.5 MSPS (turbo high) |
| Supply Voltages | AVDD/DVDD = 2.5 V, BVDD = 5 V, VIO = 1.8‑2.7 V |
The AD7985 can sample at up to 2.5 MSPS in turbo (high) mode.
It uses AVDD/DVDD = 2.5 V, BVDD = 5 V, and a VIO supply of 1.8 V to 2.7 V.
Yes, the serial interface supports daisy‑chaining several ADCs on a single 3‑wire bus with an optional busy indicator.