LT1028/LT1128 are ultralow noise, precision high speed op amps with voltage noise of 0.85nV/√Hz@1kHz, 0.1µV/°C drift, 10µV output offset voltage, 30 million gain, 50MHz gain-bandwidth product.
The LT1028 and LT1128 are ultra‑low‑noise, high‑speed operational amplifiers offering voltage noise as low as 0.85 nV/√Hz at 1 kHz and a gain‑bandwidth product of up to 50 MHz (LT1028) or 13 MHz (LT1128). They feature low offset voltage, low drift, and high voltage gain, making them suitable for precision audio, instrumentation, and infrared detector applications.
The datasheet includes detailed electrical characteristics, absolute maximum ratings, typical performance graphs, and package dimensions for the 8‑lead SO and other available packages. It also lists typical applications such as low‑noise frequency synthesizers, high‑quality audio, and infrared detector front‑ends.
| Voltage Noise (1 kHz) | 0.85 nV/√Hz typ |
|---|---|
| Voltage Noise (10 Hz) | 1.0 nV/√Hz typ |
| Slew Rate (LT1028) | 11 V/µs min |
| Slew Rate (LT1128) | 5 V/µs min |
| Gain‑Bandwidth Product (LT1028) | 50 MHz min |
| Gain‑Bandwidth Product (LT1128) | 13 MHz min |
| Input Offset Voltage | 40 µV max |
| Supply Current | 9.5 mA typ |
| Package | 8‑Pin SO |
The LT1028 has a typical voltage noise of 0.85 nV/√Hz at 1 kHz.
The LT1128 provides a minimum gain‑bandwidth product of 13 MHz.
The LT1028 is offered in an 8‑lead SO package and also in 8‑lead plastic small‑outline (Narrow) packages.