The AD7321 is a 2-channel, software-selectable, 12-bit plus sign ADC from Analog Devices. The device features a 500 kSPS throughput rate, support for ±10 V, ±5 V, ±2.5 V and 0 V to +10 V software-selectable input ranges, as well as single-ended, true differential and pseudo differential analog input capability. Additionally, the AD7321 offers high analog input impedance, low power (17 mW), full power signal bandwidth (22 MHz), an internal 2.5 V reference, a high-speed serial interface, power-down modes, and a 14-lead TSSOP package.
The AD7321 is a 2‑channel, 12‑bit plus sign successive‑approximation ADC designed on iCMOS process technology. It offers true bipolar input capability with four software‑selectable input ranges (+10 V, +5 V, +2.5 V, and 0 V to +10 V) and can be configured for single‑ended, true differential, or pseudo‑differential operation. The device features a high‑speed serial interface supporting up to 500 kSPS throughput and includes an internal 2.5 V reference.
Key specifications include a full‑power bandwidth of 22 MHz, power dissipation of 17 mW in normal operational mode, and a signal‑to‑noise ratio of up to 76 dB. The AD7321 is supplied in a 14‑lead TSSOP package and is suitable for high‑performance analog‑to‑digital conversion in industrial and instrumentation applications.
| Resolution | 13 Bits |
|---|---|
| Throughput Rate | 500 kSPS |
| Full Power Bandwidth | 22 MHz |
| Power Dissipation (Normal Mode Operational) | 17 mW |
| Signal‑to‑Noise Ratio (SNR) | 76 dB |
The AD7321 can operate at a throughput rate of up to 500 kSPS.
The device has two analog input channels with a channel sequencer.
In normal operational mode the AD7321 dissipates 17 mW.
Four software‑selectable ranges are available: +10 V, +5 V, +2.5 V, and 0 V to +10 V.