AD7923 is a high-precision, high-speed, low-power, 4-channel, successive approximation ADC that operates from a single 2.7 V to 5.25 V power supply and supports serial interfaces (SPI™/QSPI™/MICROWIRE™/DSP).
The AD7923 is a 12‑bit successive‑approximation ADC that operates from a single 2.7 V to 5.25 V supply. It provides four single‑ended inputs with a programmable channel sequencer and supports SPI, QSPI, Microwire and DSP‑compatible serial interfaces. The device delivers up to 200 kSPS throughput while consuming only a few milliwatts of power.
Key specifications include a 12‑bit resolution, 800 ns maximum conversion time, and a power dissipation of 3.6 mW at 3 V supply. The part features low input leakage, wide input bandwidth, and various shutdown modes for power‑saving operation. Pin‑out and timing details are provided for easy integration with microcontrollers or DSPs.
| Resolution | 12 Bits |
|---|---|
| Throughput Rate | 200 kSPS |
| Supply Voltage (AVpp) | 2.7 V to 5.25 V |
| Power Dissipation (3 V supply) | 3.6 mW max |
| Conversion Time | 800 ns max |
The AD7923 can sample at up to 200 kSPS.
At 3 V supply the device dissipates a maximum of 3.6 mW.
The conversion time can be as short as 800 ns.
It operates from 2.7 V to 5.25 V supply and supports input ranges of 0 V to REF or 0 V to 2 × REF.