AD7685 is a 16-bit, 250 kSPS PulSAR ADC with high resolution and low distortion. It is suitable for applications such as battery-powered equipment, medical instruments, mobile communications, and personal digital assistants.
The AD7685 is a 16‑bit charge‑redistribution successive‑approximation ADC that operates from a single supply of 2.3 V to 5.5 V. It offers a 250 kSPS conversion rate, no missing codes, and a versatile SPI‑compatible serial interface that can be daisy‑chained or include a BUSY indicator. The device is available in 10‑lead MSOP and QFN (LFCSP) packages and operates from –40 °C to +85 °C.
Typical applications include battery‑powered equipment, medical instruments, mobile communications, PDAs, data acquisition, instrumentation, and process control. The datasheet provides detailed specifications, timing diagrams, pin descriptions, absolute maximum ratings, and ordering information for various package options.
| Resolution | 16 bits |
|---|---|
| Throughput | 250 kSPS |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Power Dissipation (100 kSPS) | 1.35 mW @ 2.5 V |
| Standby Current | 1 nA |
The AD7685 operates from a single supply voltage (VDD) of 2.3 V to 5.5 V.
The device can convert at up to 250 kSPS.
It dissipates about 1.35 mW when running at 100 kSPS with a 2.5 V supply.
The standby current is specified as 1 nA.