AD7912/AD7922 are 10-bit and 12-bit, high speed, low power, 2-channel successive approximation ADCs, with 1 MSPS conversion rate, 2.35 V to 5.25 V supply range and 1 µA standby current.
The AD7912 and AD7922 are dual‑channel, successive‑approximation ADCs offering 10‑bit (AD7912) or 12‑bit (AD7922) resolution. They operate from a single 2.35 V to 5.25 V supply and achieve up to 1 MSPS throughput, with a low‑noise, wide‑bandtrack‑and‑hold amplifier that handles input frequencies above 6 MHz.
The document lists detailed electrical specifications, pin‑out diagrams, timing diagrams, power‑down modes, and recommended grounding and layout practices. It also includes application hints for battery‑powered systems, medical instruments, and high‑speed data‑acquisition designs.
| Resolution | 10 Bits (AD7912) / 12 Bits (AD7922) |
|---|---|
| Throughput Rate | 1 MSPS max |
| Supply Voltage Range | 2.35 V to 5.25 V |
| Normal‑Mode Power Consumption | 3 mA typ (static) |
| Conversion Time | 777 ns max (AD7912) / 888 ns max (AD7922) |
| Input Bandwidth | 8.5 MHz typ |
The devices can sample at up to 1 MSPS.
They operate from a single supply of 2.35 V to 5.25 V.
Yes, they support a daisy‑chain mode for multiple devices.