The LT1028/LT1128 are ultralow noise, precision high speed op amps with 0.85nV/√Hz 1kHz noise, 1.0nV/√Hz 10Hz noise.
The LT1028 and LT1128 are ultralow‑noise, precision op‑amps offering 0.85 nV/√Hz noise at 1 kHz (LT1028) and 1.0 nV/√Hz at 10 Hz. They combine high speed (gain‑bandwidth up to 50 MHz for LT1028, 13 MHz for LT1128) with low offset (40 µV max) and low input bias current (25 nA).
The document provides absolute maximum ratings, electrical characteristics, typical performance graphs, package dimensions, and recommended applications such as low‑noise synthesizers, audio, infrared detectors, and hydrophone amplifiers.
| Voltage Noise (1 kHz) | 0.85 nV/√Hz typ |
|---|---|
| Voltage Noise (10 Hz) | 1.0 nV/√Hz typ |
| Gain‑Bandwidth Product | LT1028: 50 MHz min, LT1128: 13 MHz min |
| Slew Rate | LT1028: 11 V/µs min, LT1128: 5 V/µs min |
| Offset Voltage | 40 µV max |
| Input Bias Current | 25 nA typ |
The LT1028 has a typical voltage noise of 0.85 nV/√Hz at 1 kHz.