The AD7782 is a complete analog front end for low-frequency measurement applications. The 24-bit sigma-delta ADC contains two fully differential analog input channels that can be configured.
The document describes the AD7782, a complete analog front-end designed for low-frequency measurement applications. It features a 24-bit sigma-delta ADC containing two fully differential analog input channels that can be configured via external pins to support gain settings of 1 or 16.
| Resolution (p-p) | 18.5-Bit (±2.56 V Range), 16.5-Bit (±160 mV Range) |
|---|---|
| Output Update Rate | 19.79 Hz nom |
| Power Supply Voltage | 2.7/3.6 V min/max (3V), 4.75/5.25 V min/max (5V) |
| Operating Temperature Range | -40°C to +85 °C |
| Package Type | 16-lead TSSOP |
The device supports full-scale input signal ranges of ±2.56 V or ±160 mV.
It uses an extremely simple, read-only digital interface with no on-chip registers to be programmed.
The typical current draw is 1.3 mA when operating from a single 3 V supply.