Low Noise Amplifier LNA-2

Product catalog summary

Summary
The LNA-2 is a differential low-noise amplifier featuring two gain stages with selectable gain factors of x10 and x100. It offers a maximum bandwidth of 20 MHz at a gain of 10. The amplifier is designed for low noise with an input noise level of 4.5 nV/√Hz and an input impedance of 1 MΩ.

Key Capabilities

Gain factor options: x10 and x100
Differential input stage
Input noise: 4.5 nV/√Hz
Input impedance: 1 MΩ
Maximum output voltage: ±2.5 V without load, ±1.25 V with 50 Ohm load
Bandwidth: 20 MHz at G=10, 15 MHz at G=100

Variants

Rack-Version: 2-channel plug-in module LNA2-P, compatible with base units Amp-BU-10 (up to 5 modules/10 channels) and Amp-BU-24 (up to 12 modules/24 channels)
Box-Version: 2-channel modules LNA2-Box

Specifications

Number of input channels: 2
Gain: x10, x100 selectable
Input stage: Differential amplifier
Common-Mode Rejection Ratio (CMMR): > 63 dB (DC - 1 kHz)
Max common-mode input voltage: ±3 V
Input impedance: approximately 1 MΩ II 25 pF
Input bias current: < ±0.1 uA
Offset drift (related to input): < ±5 uV/°C
Output impedance: 50 Ω ± 0.5%
Max output voltage swing: ±2.5 V (no load), ±1.25 V (load = 50 Ω)
DC-gain error: typically ±0.1%, maximum ±0.2%
Connector input: Isolated BNC
Connector output: Non-isolated BNC
Max input voltage (protected input range): ±25 V
Power supply: 9 – 18 VDC, max 2.5 W
Case dimensions for box version: 108 x 45 x 170 mm

Block Diagram
The block diagram illustrates the internal structure of the LNA-2, showing the differential amplifier stages, power supply inputs, and output connections.

Catalog excerpts

The LNA-2 is a differential, low-noise amplifier with two gain stages of x10 and x100 with a maximum bandwidth of 20 MHz (at G=10). Elsys AG Mellingerstrasse 12 CH-5443 Niederrohrdorf Switzerland Phone: +41 56 496 01 55 Email: [email protected] www.elsys-instruments.com

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2 Channel Low Noise Amplifier Key Capabilities • Gain factor x10 and x100 • Differential input stage •Parameter Input Noise 4.5 nV /√(Hz) •Number Input impedance of Input1 MΩ Channels • Max. Output voltage: Low Noise Amplifier Gain ± 2.5 V @ without load ± 1.25Stage V @ 50 Ohm Input • Bandwidth 20 MHz (G=10), 15 MHz (G=100) Number of Input Channels Specification 2 channel Common-Mode Rejection Ratio (CMMR) x10, x100 selectable Max Common-Mode Input Voltage Differential Amplifier Input Impedance Input Impedance, BNC Shield to GND Input Stage Differential Amplifier Common-Mode Rejection Ratio (CMMR)...

Open the catalog to page 2

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