The AD7816/AD7817/AD7818 are single- and 4-channel, 9 �s, 10-bit ADCs with an on-chip temperature sensor. The AD7816 is a temperature measurement only device.
The AD7816, AD7817, and AD7818 are 10‑bit analog‑to‑digital converters with on‑chip temperature sensors. The AD7816 is a temperature‑monitoring‑only device, while the AD7817 and AD7818 provide one or four single‑ended analog input channels respectively. They operate from a single 2.7 V to 5.5 V supply and include an on‑chip 2.5 V reference, track‑and‑hold circuitry, and flexible serial interfaces compatible with Intel 8051, Motorola SPI, QSPI, and MICROWIRE protocols.
Typical applications include ambient temperature monitoring, thermostat and fan control, high‑speed microprocessor temperature measurement, data‑acquisition systems, industrial process control, and automotive battery‑charging monitoring. Key performance figures include a 9 µs conversion time per channel, 0.25 °C temperature resolution, and low‑power operation with automatic power‑down modes.
| Resolution | 10 Bits |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V |
| Conversion Time (single channel) | 9 µs |
| On‑Chip Reference Voltage | 2.5 V |
| Temperature Sensor Range | –55 °C to +125 °C |
The AD7818 operates from a single supply voltage of 2.7 V to 5.5 V.
The AD7818 provides four single‑ended analog input channels.
A single channel conversion takes 9 µs.