Features and Benefits

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.
Offset Voltage: 40µV Max.
Drift with Temperature: 0.8µV/°C Max.
Voltage Gain: 7 Million Min.
Voltage and Current Noise 100% Tested
Available in 8-Pin SO Package

Product details

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.