The AD7856 is a high speed, low power, 14-bit ADC that operates from a single 5 V power supply. It has automatic calibration, flexible power management, multiple input ranges, multiple input channels, self- and system calibration, and a versatile serial I/O port.
The AD7856 is a high‑speed, low‑power 14‑bit analog‑to‑digital converter that operates from a single 5 V supply. It features automatic self‑calibration on power‑up, multiple power‑down modes, and a flexible serial interface compatible with SPI, QSPI, and 8051‑style protocols.
Key highlights include an 285 kSPS throughput rate, eight single‑ended or four pseudo‑differential input channels, a 4.096 V reference, and typical power consumption of 60 mW in normal mode. The device is suited for battery‑powered systems, instrumentation, high‑speed modems, and other applications requiring precise, low‑power conversion.
| Resolution | 14 bits |
|---|---|
| Throughput Rate | 285 kSPS |
| Supply Voltage | 5 V (single supply) |
| Power Consumption (normal mode) | 60 mW typical |
| Power Consumption (sleep mode) | 5.1 mW at 10 kSPS |
| Input Channels | 8 single‑ended or 4 pseudo‑differential |
| Reference Voltage | 4.096 V |
The AD7856 can sample at up to 285 kSPS.
It offers eight single‑ended inputs or four pseudo‑differential input pairs.