AD7982 is an 18-bit, 1 MSPS, low power SAR ADC in MSOP/QFN package with supply voltage range of 2.5 V to 5.0 V.
The AD7982 is an 18‑bit successive‑approximation ADC offering up to 1 MSPS throughput with low power consumption (7.0 mW at 1 MSPS). It operates from a single supply (1.8 V‑5 V) and supports multiple logic levels (1.8 V, 2.5 V, 3 V, 5 V). The device includes a versatile serial interface (SPI/QSPI/MICROWIRE/DSP‑compatible) and can be daisy‑chained with an optional busy indicator.
The document contains a full specification table, timing diagrams, absolute maximum ratings, pin descriptions, terminology, layout recommendations, and ordering information. It also provides application hints for PCB design and references to the evaluation board (EVAL‑AD7982CBZ).
| Resolution | 18 Bits |
|---|---|
| Maximum Throughput | 1 MSPS |
| Power Dissipation (1 MSPS) | 7.0 mW |
| Supply Voltage (VDD) | 2.5 V (nominal) |
| Logic Supply (VIO) | 2.3 V to 5.5 V |
| Power Supply Rejection Ratio | 90 dB |
| Dynamic Range | 99 dB |
The AD7982 can sample at up to 1 MSPS.
It operates from a single supply of 1.8 V to 5 V, with VDD nominally 2.5 V and VIO ranging from 2.3 V to 5.5 V.
Multiple AD7982s can be daisy‑chained via the serial interface, with an optional busy indicator to show conversion status.
Typical power consumption is 7.0 mW when operating at 1 MSPS.