Krohn-Hite Model 7000 Preamplifier

Technical specifications：

DC to 1MHz

Low-noise differential preamplifier

Noise (RTI): 7 nV / √ Hz

Gain settings: 1, 10, 100 and 1000

Amplitude flatness: ±0.3 dB

Output: ±10 V peak

Selectable bandwidth:

100 Hz, 3 kHz, 30 kHz, 100 kHz and 1 MHz (LP off)

Common-mode rejection ratio: >100 dB at 1 kHz 

Optional RMS/DC conversion circuit output

Type

Krohn-Hite Model 7000 differential amplifier provides low-noise high-

gain amplification circuitry, with AC output derived from an ultra-low-noise FET instrumentation ampli-

amplifier and an optional DC (RMS/ DC conversion) output. 7000

With fixed gain settings 1 (0 dB), 10 (20 dB), 100 (40 dB)

and 1000 (60dB), optional bandwidths of 100Hz, 3kHz, 30kHz,

100kHz and 1MHz (LP disconnected). Input noise is 7nV/ √ Hz, at

Greater than 100 dB at 1 kHz.

Model 7000 also features momentary push-button switches for controlling coupling, bandwidth,

gain, and band on/off selection. BNC connectors provide single-ended input and

Differential input, AC output and RMS/ DC conversion circuit output (optional)

connection.

Model 7000 is a highly useful noise, amplifier, power supply and

a troubleshooting source for various other electronic circuits. As an amplification oscilloscope

a preamplifier for low-level input signals from instruments or other devices, the Model 7000

is an excellent tool.