The LT1028 (gain of –1 stable)/LT1128 (gain of +1 stable) achieve a new standard of excellence in noise performance with 0.85nV/√Hz 1kHz noise, 1.0nV/√Hz 10Hz noise. This ultralow noise is combined with excellent high speed specifications (gain-bandwidth product is 75MHz for LT1028, 20MHz for LT1128), distortion-free output, and true precision parameters (0.1µV/°C drift, 10µV offset voltage, 30 million voltage gain). Although the LT1028/LT1128 input stage operates at nearly 1mA of collector current to achieve low voltage noise, input bias current is only 25nA. The LT1028/LT1128’s voltage noise is less than the noise of a 50Ω resistor. Therefore, even in very low source impedance transducer or audio amplifier applications, the LT1028/LT1128’s contribution to total system noise will be negligible. Applications * Low Noise Frequency Synthesizers * High Quality Audio * Infrared Detectors * Accelerometer and Gyro Amplifiers * 350Ω Bridge Signal Conditioning * Magnetic Search Coil Amplifiers * Hydrophone Amplifiers * Voltage Noise * 1.1nV/√Hz Max. at 1kHz * 0.85nV/√Hz Typ. at 1kHz * 1.0nV/√Hz Typ. at 10Hz * 35nVP-P Typ., 0.1Hz to 10Hz * Gain-Bandwidth Product * LT1028: 50MHz Min. * LT1128: 13MHz Min. * Slew Rate * LT1028: 11V/µs Min. * LT1128: 5V/µs Min. https://elecena.pl/product/241212/ultra-low-noise-precision-high-speed-op-amps 2007-02-28 https://elecena.pl/product/241212/ultra-low-noise-precision-high-speed-op-amps 2016-04-13 https://elecena.pl/product/241212/ultra-low-noise-precision-high-speed-op-amps 2025-01-22