LT1128ACN8

精密放大器 LT1128 - Ultra Low Noise Precision High Speed Op Amps

DESCRIPTION

The LT®1028gain of –1 stable/LT1128gain 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.

FEATURES

■ 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

■ Voltage and Current Noise 100% Tested

■ Gain-Bandwidth Product

   LT1028: 50MHz Min

   LT1128: 13MHz Min

■ Slew Rate

   LT1028: 11V/µs Min

   LT1128: 5V/µs Min

■ Offset Voltage: 40µV Max

■ Drift with Temperature: 0.8µV/°C Max

■ Voltage Gain: 7 Million Min

■ Available in 8-Pin SO Package

APPLICATIONS

■ Low Noise Frequency Synthesizers

■ High Quality Audio

■ Infrared Detectors

■ Accelerometer and Gyro Amplifiers

■ 350Ω Bridge Signal Conditioning

■ Magnetic Search Coil Amplifiers

■ Hydrophone Amplfiers