The AD7322 is a 12-bit successive approximation analog-to-digital converter (ADC) with high integration, low power, and high performance. The AD7322 is fabricated using iCMOS technology and packaged in a 14-lead TSSOP. The AD7322 features a 12-bit resolution and a maximum conversion rate of 1 MSPS. The AD7322's input range is ±10 V, ±5 V, ±2.5 V, and 0 V to +10 V. The AD7322 also supports single-ended, true differential, and pseudo differential input configurations. The AD7322 provides an internal 2.5 V reference voltage and offers bandwidth up to 22 MHz.
The AD7322 from Analog Devices is a dual‑channel, 12‑bit plus sign successive‑approximation ADC. It offers true bipolar input ranges that can be selected via software (+10 V, +5 V, +2.5 V, or 0 V to +10 V) and supports single‑ended, true differential, and pseudo‑differential configurations. The device operates with a high‑speed serial interface capable of up to 1 MSPS throughput while consuming low power (≈21 mW).
The datasheet provides detailed specifications, timing diagrams, absolute maximum ratings, and recommended layout and grounding practices. It also includes information on power‑down modes, reference options, and ESD protection guidelines for reliable integration into high‑performance analog front‑ends.
| Throughput Rate | 1 MSPS |
|---|---|
| Resolution | 13 bits |
| Power Consumption (Normal Mode) | 21 mW |
| Full Power Bandwidth | 22 MHz |
| Input Voltage Ranges | +10 V, +5 V, +2.5 V, 0 V to +10 V |
The AD7322 can sample at up to 1 MSPS.
Four software‑selectable ranges are provided: +10 V, +5 V, +2.5 V, and 0 V to +10 V.
Typical power consumption is about 21 mW at 1 MSPS.
The AD7322 provides a full‑power bandwidth of 22 MHz.