AD7811/AD7812 is a high speed, low power, 10-bit A/D converter, supports 2.7V-5.5V power supply voltage, and the maximum sampling rate is 350kSPS.
The AD7811 (4‑channel) and AD7812 (8‑channel) are 10‑bit successive‑approximation A/D converters that operate from a single 2.7 V to 5.5 V supply. They feature an on‑chip 2.5 V reference, track‑and‑hold amplifier, and a DSP‑compatible serial interface. Input channels can be configured as single‑ended or pseudo‑differential, and the devices support automatic power‑down modes for low‑power operation.
Both parts are offered in mini‑DIP, SOIC, and TSSOP packages and include a package‑address pin that allows two devices to share the same serial bus. Detailed specifications cover dynamic performance, power consumption, timing characteristics, and absolute maximum ratings.
| Resolution | 10 Bits |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V |
| Conversion Time | 2.3 µs max |
| Throughput Power at 10 kSPS | 315 µW max |
| Input Voltage Range | 0 V to Vpp |
| On‑chip Reference | 2.5 V ±2.5% |
| Package Options | mini‑DIP, SOIC, TSSOP |
The conversion time is specified as 2.3 µs maximum.
The AD7812 has eight single‑ended inputs that can be configured as seven pseudo‑differential channels.
Yes, the package address pin on the AD7811 and AD7812 allows sharing of the serial bus in multipackage applications.
At a throughput of 10 kSPS the device consumes up to 315 µW.