The AD7923 is a 12-bit, high speed, low power, 4-channel, successive approximation (SAR) ADC. It operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 200 kSPS. It contains a low noise, wide bandwidth track-and-hold amplifier.
The AD7923 from Analog Devices is a 12‑bit successive‑approximation ADC that supports four single‑ended inputs and a channel sequencer. It operates from a single 2.7 V to 5.25 V supply and can achieve a maximum throughput of 200 kSPS, making it suitable for high‑speed data‑acquisition applications.
The device features low power dissipation (3.6 mW at 3 V, 7.5 mW at 5 V), a flexible serial interface (SPI, QSPI, Microwire, DSP‑compatible), and automotive‑grade qualification. Detailed specifications, timing diagrams, pin descriptions, and layout recommendations are provided for designers.
| Resolution | 12 Bits |
|---|---|
| Throughput Rate | 200 kSPS max |
| Power Dissipation (3 V supply) | 3.6 mW max |
| Power Dissipation (5 V supply) | 7.5 mW max |
| Input Voltage Range | 2.7 V – 5.25 V |
| Signal‑to‑Noise Ratio | ≥ 70 dB |
| Package | 16‑lead TSSOP |
The AD7923 can convert up to 200 kSPS.
At 3 V it dissipates a maximum of 3.6 mW.
The device operates with an analog supply (AVpp) from 2.7 V to 5.25 V.
The AD7923 supports SPI, QSPI, Microwire, and DSP‑compatible interfaces.