The AD7690 is a 18-bit, 1.5 LSB INL, 400 kSPS PulSAR® differential ADC from Analog Devices that is offered in MSOP/QFN packages.
The AD7690 is an 18‑bit successive‑approximation analog‑to‑digital converter that operates from a single 4.75‑5.25 V supply. It offers true differential inputs, a serial SPI‑compatible interface, and the ability to daisy‑chain multiple devices on a 3‑wire bus.
The device is supplied in 10‑lead MSOP or QFN (LFCSP) packages, supports operation from –40 °C to +85 °C, and includes features such as a busy indicator, low standby current, and selectable logic levels (1.8 V, 2.5 V, 3 V, 5 V).
| Resolution | 18 Bits |
|---|---|
| Maximum Throughput | 400 kSPS |
| Supply Voltage (VDD) | 4.75 V to 5.25 V |
| Standby Current | 1 nA |
| Input Voltage Range | ±VREF (differential) |
The AD7690 provides 18‑bit resolution with no missing codes.
It can sample up to 400 kSPS.
The standby current is 1 nA.
The device operates from 4.75 V to 5.25 V on VDD.