This document introduces the 18-bit, 1.5 LSB INL, 400 kSPS PulSAR® differential ADC in MSOP/QFN package of AD7690.
The AD7690 is an 18‑bit successive‑approximation ADC with no missing codes, offering up to 400 kSPS throughput and a dynamic range of 102 dB. It operates from a single 5 V supply, supports 1.8 V‑5 V logic levels, and features a SPI‑compatible serial interface with daisy‑chain capability.
The document includes full electrical specifications, timing parameters, absolute maximum ratings, pin‑out diagrams, terminology definitions, layout recommendations, and ordering information for both MSOP and QFN packages.
| Resolution | 18 bits |
|---|---|
| Maximum Throughput | 400 kSPS |
| Supply Voltage (VDD) | 4.75 V to 5.25 V |
| Logic Interface Voltage (VIO) | 1.8 V to 5 V selectable |
| Power Dissipation (100 kSPS) | 4.25 mW |
| Dynamic Range (400 kSPS) | 102 dB |
The AD7690 can sample up to 400 kSPS.
The device operates from a VDD of 4.75 V to 5.25 V.
Yes, the serial interface supports daisy‑chaining several ADCs on a single 3‑wire bus.
Power dissipation is 4.25 mW at 100 kSPS.