The ADS1210 and ADS1211 are precision, wide dynamic range, delta-sigma analog-to-digital converters with 24-bit resolution operating from a single +5V supply. They feature differential inputs, a programmable gain amplifier, a flexible SPI-compatible SSI interface, and more.
The ADS1210 and ADS1211 are 24‑bit delta‑sigma analog‑to‑digital converters that operate from a single +5 V supply. They offer high‑resolution measurement for industrial process control, instrumentation, blood analysis, smart transmitters, portable instruments, weigh scales, and pressure transducers. The ADS1210 is a single‑channel device, while the ADS1211 adds a 4‑channel input multiplexer.
Key features include differential inputs, a programmable gain amplifier (gain 1‑16), flexible SPI‑compatible serial interface with a two‑wire mode, programmable cut‑off frequency up to 15.6 kHz, internal/external reference options, and on‑chip self‑calibration. The datasheet lists pin configurations for DIP, SOIC, and SSOP packages, typical performance curves, mechanical dimensions, and absolute maximum ratings.
| Resolution | 24 Bits |
|---|---|
| Effective Resolution at 10 Hz | 23 Bits |
| Input Voltage Range | 0 V to +5 V |
| Power Supply Voltage | 4.75 V to 5.25 V |
| Analog Current | 2 mA |
| Digital Current | 3.5 mA |
| Programmable Gain Amplifier | 1, 2, 4, 8, 16 |
| Input Capacitance | 8 pF |
| Input Leakage Current (25 °C) | 5 pA to 50 pA |
| Number of Channels (ADS1211) | 4 |
The devices achieve 23 bits effective resolution at a 10 Hz data rate.
The ADS1211 includes a 4‑channel input multiplexer.
The ADS1210 is offered in 18‑pin DIP and 18‑lead SOIC packages.
The recommended supply voltage is 5 V nominal, with an acceptable range of 4.75 V to 5.25 V.