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Low-noise voltage preamplifier

PRODUCTS > PHOTONICS > MISCELLANEOUS > LOW-NOISE VOLTAGE PREAMPLIFIER
AMP200 - Low-noise preamplifier
AMP200 - Low-noise preamplifier AMP200 low-noise preamplifier functional diagram AMP200 - Frequency response AMP200 - Input voltage noise density

Koheron AMP200 is a low-noise (down to 2.4 nV/√Hz), wide-bandwidth (up to 13 MHz) voltage preamplifier. Thanks to the high-impedance input (10 kΩ or 1 MΩ) many sensors can be directly interfaced to the amplifier. The input can be either AC or DC coupled and the input offset voltage is adjustable over a ±100 mV range. A strong adjustable-gain output buffer is capable of driving up to ±2.2 V across a 50 Ω load.

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Specifications

AMP200-10k AMP200-1M
Gain, Bandwidth
Gain range 5 to 500 5 to 500
3 dB bandwidth (gain = 10) 13 MHz 8 MHz
Input
Input impedance 10 kΩ 1 MΩ
Front-end amplifier Bipolar junction transistor Junction-gate field-effect transistor
Input-referred voltage noise (10 kHz, 50 Ω input) 2.4 nV/√Hz 4.7 nV/√Hz
Input offset adjustement range ±100 mV ±100 mV
Coupling AC or DC AC or DC
AC cutoff frequency at 3 dB 0.72 Hz 1.59 Hz
Input voltage range -1.7 V to 1.7 V -1.7 V to 1.7 V
Output
Output impedance 50 Ω 50 Ω
Slew rate (high impedance) 60 V/µs 60 V/µs
Slew rate (50 Ω) 10 V/µs 10 V/µs
Output voltage range (high impedance) -8.5 V to 8.5 V -8.5 V to 8.5 V
Output voltage range (50 Ω) -2.2 V to 2.2 V -2.2 V to 2.2 V
Power supply
Positive supply voltage 12 V 12 V
Negative supply voltage -12 V -12 V
Supply current 100 mA per rail 100 mA per rail
Quiescent current 22 mA per rail 22 mA per rail
Other
Outside dimensions 66 mm x 50 mm x 13 mm 66 mm x 50 mm x 13 mm
Weight 20 g 20 g
Operating temperature -20 °C to 70 °C -20 °C to 70 °C

Functional diagram

AMP200 low-noise preamplifier functional diagram

Frequency response

AMP200 10 kΩ input frequency response
10 kΩ input frequency response
AMP200 1 MΩ input frequency response
1 MΩ input frequency response

Input noise

Input-referred voltage noise measured for a gain of 25 with DC-coupled 50 Ω terminated input.

AMP200 10 kΩ input noise
10 kΩ input noise
AMP200 1 MΩ input noise
1 MΩ input noise

Export information

HS code 9030.33.70
Country of Origin France

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AMP200
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