The LT®1677 features the lowest noise performance available for a rail-to-rail operational amplifier: 3.2nV/√Hz wideband noise, 1/f corner frequency of 13Hz and 90nV peak-to-peak 0.1Hz to 10Hz noise. Low noise is combined with outstanding precision: 20µV offset voltage and 0.2µV/°C drift, 130dB common mode and power supply rejection and 7.2MHz gain bandwidth product. The com- mon mode range exceeds the power supply by 100mV. The voltage gain of the LT1677 is extremely high, 19 million (typical) driving a 10k load. In the design, processing and testing of the device, particular attention has been paid to the optimization of the entire distribution of several key parameters. Consequently, the specifications have been spectacularly improved compared to competing rail-to-rail amplifiers.
The LT1677 is a low‑noise, rail‑to‑rail precision operational amplifier from Linear Technology. It offers a wide supply range (3 V to +18 V), high voltage gain, low offset voltage, and excellent CMRR and PSRR, making it suitable for audio, sensor, and instrumentation applications.
The document provides absolute maximum ratings, detailed electrical characteristics, package dimensions, typical performance graphs, a sample application circuit, and ordering information for both PDIP and SO‑small‑outline packages.
| Input Offset Voltage (typ) | 90 µV |
|---|---|
| Input Noise Voltage (0.1 Hz‑10 Hz) | 90 nV p‑p |
| Gain Bandwidth Product (typ) | 7.2 MHz |
| Supply Current (typ) | 3.4 mA |
| Slew Rate (typ) | 25 V/µs |
| PSRR (typ) | 125 dB |
The LT1677 operates from –40 °C to 85 °C.
It is offered in an 8‑lead PDIP and an 8‑lead plastic small‑outline (SO) package.