The ADS7842 is a 12-bit, 4-channel parallel output sampling analog-to-digital converter (ADC) with features including single supply operation, a 4-channel input multiplexer, up to 200kHz sampling rate, full 12-bit parallel interface, ±1LSB INL and DNL, no missing codes, 72dB SINAD, and low power consumption. It is ideal for battery-operated systems such as portable, multi-channel dataloggers and measurement equipment.
The ADS7842 is a 12‑bit, 4‑channel analog‑to‑digital converter with a built‑in sample‑and‑hold amplifier and parallel 3‑state output drivers. It operates from a single supply of 2.7 V to 5 V, offers up to 200 kHz sampling rate, and consumes only 2 mW of power, making it suitable for battery‑operated data‑loggers and measurement equipment. The device includes an onboard 4‑channel multiplexer and is offered in an SSOP‑28 package.
The datasheet details package and ordering information, pin descriptions, and electrical characteristics for both +5 V and +2.7 V supply options. Typical performance graphs illustrate SNR, SINAD, THD, and power‑down behavior across temperature and sampling rates. Package option addendum and important legal notices are also included.
| Resolution | 12‑bit |
|---|---|
| Supply Voltage | 2.7 V to 5 V |
| Maximum Sampling Rate | 200 kHz |
| Power Dissipation | 2 mW |
| Package | SSOP‑28 |
| SINAD | 72 dB |
| INL / DNL | ±1 LSB |
| Operating Temperature Range | –40 °C to +85 °C |
The ADS7842 operates from a single supply voltage of 2.7 V to 5 V.
The device can sample at rates up to 200 kHz.
Typical power consumption is 2 mW.
It is offered in an SSOP‑28 package.