The 1B32 is a precision, chopper‑based signal‑conditioning IC designed for high‑accuracy load‑cell and bridge transducer applications. It offers low input offset drift, programmable bridge excitation (4 V‑15 V), remote sensing, and a three‑pole low‑pass filter with a 4 Hz cutoff.
The manual provides full specifications, pin designations, wiring diagrams, gain‑setting methods (pin‑strapped or external resistors), offset adjustment, power‑supply requirements, and application examples such as pressure‑transducer interfaces and mobile data‑acquisition systems.
| Input Offset Voltage (Initial, RTI) | +40 pV |
|---|---|
| Input Bias Current (Initial @25°C) | +3 nA |
| Low‑Pass Filter Cutoff Frequency | 4 Hz (‑3 dB point) |
| Power Supply Rated Voltage | 18 V |
The bridge excitation can be programmed from +4 V to +15 V using external resistors.
The low‑pass filter has a 3‑pole design with a cutoff (‑3 dB) at 4 Hz.