The ADS1100 is a precision, continuously self-calibrating Analog-to-Digital (A/D) converter with differential inputs and up to 16 bits of resolution in a small SOT23-6 package. It uses an I2C-compatible serial interface and operates from a single power supply ranging from 2.7V to 5.5V. The ADS1100 can perform conversions at rates of 8, 16, 32, or 128 samples per second. It also features a programmable gain amplifier and low power consumption, making it suitable for applications requiring high-resolution measurement, where space and power consumption are major considerations.
The ADS1100 is a precision, continuously self‑calibrating 16‑bit ADC offered in a tiny SOT‑23‑6 package. It features a programmable gain amplifier (gain = 1, 2, 4, or 8), low noise (4 µV p‑p), and a selectable data rate from 8 SPS to 128 SPS. Power is supplied from 2.7 V to 5.5 V and the device consumes only about 90 µA in active mode. Communication is via a standard I²C (2‑wire) interface, and eight factory‑programmed I²C addresses are available.
The converter is intended for portable instrumentation, industrial process control, smart transmitters, consumer goods, factory automation, and temperature measurement. It operates from –40 °C to +125 °C, provides differential inputs with typical input impedances of 2.4 MΩ/PGA (differential) and 8 MΩ (common‑mode), and includes continuous self‑calibration that cannot be disabled.
| Resolution | 16 bits (no missing codes) |
|---|---|
| Power‑supply voltage range | 2.7 V to 5.5 V |
| Active‑mode current consumption | 90 µA |
| Programmable gain options | 1, 2, 4, or 8 |
| Data‑rate options | 8 SPS to 128 SPS |
| Input noise | 4 µV p‑p |
| I²C address variants | Eight (1001aaa) |
| Package type | SOT‑23‑6 |
The device operates from a supply voltage of 2.7 V to 5.5 V.
Eight different factory‑programmed I²C addresses are available (1001aaa).
It provides up to 16‑bit resolution with no missing codes.
The programmable gain amplifier can be set to gain = 1, 2, 4, or 8.