AD7873 is a 12-bit successive approximation ADC with a synchronous serial interface and low on resistance switches for driving touch screens. AD7873 operates from a single 2.2 V to 5.25 V power supply and features throughput rates greater than 125 kSPS.
The AD7873 is a 12‑bit successive‑approximation ADC designed for resistive touch‑screen applications such as PDAs, hand‑held devices, and point‑of‑sale terminals. It operates from a single 2.2 V to 5.25 V supply and provides up to 125 kSPS throughput.
Key features include an on‑chip 2.5 V reference, temperature sensor (‑40 °C to +85 °C), battery‑monitor input, touch‑pressure measurement, and programmable 8‑ or 12‑bit resolution. The device is offered in 16‑lead QSOP, TSSOP, and LFCSP packages.
| Supply Voltage (Vcc) | 2.2 V to 5.25 V |
|---|---|
| Power Consumption (reference off) | 1.37 mW max |
| Package Options | 16‑lead QSOP, TSSOP, LFCSP |
It operates from a single supply of 2.2 V to 5.25 V.
Yes, it has an on‑chip temperature sensor covering –40 °C to +85 °C.
The device is offered in 16‑lead QSOP, TSSOP, and LFCSP packages.