SR445A Stanford Research Systems 350 MHz Preamplifier

Stanford Research Systems SR445A 350 MHz Preamplifier Overview

Features:

• (4) Independent Channels
• Voltage Gain to 625
• 1 ns Rise and Fall Time

The Stanford Research Systems SR445A 350 MHz Preamplifier may still be available for purchase and support from Artisan Technology Group beyond End-Of-Life (EOL) by the manufacturer (OEM).

350 MHz Preamplifier Price & Specs

Stanford Research Systems SR445A 350 MHz Preamplifier Description

Functions

High-bandwidth AC-coupled voltage preamplifier providing gain up to 100x, designed for low-noise amplification of fast signals with input bandwidth up to 350 MHz; operates with 50 O input/output impedance and interfaces via BNC connectors; supports cascading for higher gain, suitable for fast photodiode, PMT, and other low-level pulsed signal amplification in laboratory measurement systems.

Platforms

platforms: A standalone, DC-powered module designed for benchtop or system integration. Interfaces via BNC connectors for four independent 50 O input/output channels. A rear DB15 connector supplies power and remote gain control. Commonly used to amplify fast, low-level analog signals from photomultiplier tubes, photodiodes, or particle detectors for input into oscilloscopes, digitizers, lock-in amplifiers, or photon counters in physics, spectroscopy, and high-speed signal recovery applications.

Applications

High-bandwidth preamplification of fast analog pulses in nuclear, particle physics, and time-resolved optical experiments; signal conditioning for photomultiplier tubes, fast photodiodes, and charge-sensitive detectors; noise reduction and signal-to-noise enhancement in high-speed digital systems; integration into modular instrument racks via standard BNC connectors for differential or single-ended signal interfacing.

Accessories

accessories: Requires SR445 DC Power Supply/Preamplifier Mainframe for operation. Interfaces include one BNC female signal input, four BNC female signal outputs, and one 9-pin D-sub (DB-9) female power connector. The power connector receives ±12 VDC, +5 VDC, and ground from the mainframe. Standard BNC coaxial cables are needed for signal connections.

Interfaces

Interfaces: Four BNC female connectors (input, output, monitor, offset input), 2-pin mini power connector (±15V DC), maximum input voltage ±5V, bandwidth DC to 350 MHz, input impedance 50 O or 1 MO, output impedance 50 O.

Specifications

specification: A four-channel, DC to 350 MHz preamplifier housed in a single-width NIM (Nuclear Instrument Module) crate standard. It provides a fixed voltage gain of 5 for amplifying fast, low-level analog or digital signals. Each channel features a 50 O BNC input and two complementary 50 O BNC outputs (inverting and non-inverting) for interfacing with timing discriminators, counters, or oscilloscopes. Common applications include amplifying signals from photomultiplier tubes (PMTs), microchannel plates, and fast photodiodes for photon counting, fast-timing, and time-of-flight experiments.

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Stanford Research Systems SR445A 350 MHz Preamplifier Manuals, Datasheets, Drivers, Links

• Stanford Research Systems SR445A Datasheet (pdf)
• View all Stanford Research Systems products

Stanford Research Systems SR445A 350 MHz Preamplifier Specs

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