The ADS1146, ADS1147, and ADS1148 are highly-integrated, precision, 16-bit analog-to-digital converters (ADCs). They feature an onboard, low-noise, programmable gain amplifier (PGA), a precision delta-sigma ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1147 and ADS1148 also provide system monitoring capabilities and dual current digital-to-analog converters.
The ADS1146, ADS1147 and ADS1148 are 16‑bit delta‑sigma analog‑to‑digital converters designed for temperature‑sensor applications such as RTDs, thermocouples and thermistors. They integrate a programmable gain amplifier, selectable reference, and optional excitation current DACs, offering high accuracy and fast single‑cycle settling.
The document provides detailed electrical characteristics, pin configurations for the TSSOP‑16/20/28 packages, mechanical dimensions, and ordering information. It also includes thermal metrics, absolute maximum ratings, and a standard warranty notice.
| Resolution | 16 Bits (no missing codes) |
|---|---|
| Maximum Data Rate | 2 kSPS |
| Analog Supply Voltage Range | 2.7 V to 5.25 V (unipolar) or 2.5 V bipolar |
| Operating Temperature Range | -40 °C to +125 °C |
| Differential Inputs (ADS1148) | 4 differential inputs |
The devices support data output rates up to 2 kSPS.
They operate from –40 °C to +125 °C.
The ADS1148 offers four differential inputs.
The internal reference outputs about 2.048 V.