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Voltage Amplifiers
 
 
 

Voltage AmplifiersAnalog Modules, Inc. (AMI) designs and manufactures a range of voltage amplifiers for OEM, medical and research applications. AMI's amplifiers combine low noise, high gain, large dynamic range, and small package size.

The 321A Series are ultra low noise voltage amplifiers designed for instrument and transducer applications in which high gain and low noise are required. Both low and high input impedances are available.

The 322 Series are high gain, low noise bipolar voltage amplifiers designed to be used with instruments and transducers with low source impedances. Other models are available with bias supplies suitable for MCT detectors (-MCT option, consult factory for price and availability.

The 351A Series are low noise voltage amplifiers designed for instrument and transducer applications in which low drift and low noise are required. Both low and high input impedances are available.

The Model 353A is a low noise voltage amplifier designed for instrument and transducer applications in which high bandwidth and low noise are required.

Data Sheets (PDF Format) are available for models listed below.


 
 
Model Bandwidth
(Small Signal)
Gain Input Noise
(V/Root Hz)
Output Swing Supply Voltage(V) Input Z
(Ohms)
Polarity Features
321A-1 200Hz to 12MHz 20 to 40dB 2.5nV ±6V ±15 50 or 4.7k INV or NI Trimpot adjustable gain
321A-2 200Hz to 6.5MHz 40 to 60dB 1.7nV ±6V ±15 50 or 4.7k INV or NI Trimpot adjustable gain
321A-3 200Hz to 3.5MHz 60 to 80dB 1nV ±6V ±15 50 or 4.7k INV or NI Trimpot adjustable gain
322-10 200Hz to 60MHz 40dB 280pV ±2.5V +15 50 or 100 NI Lowest voltage noise from a low impedance source
322-11 200Hz to 10MHz 60dB 280pV ±2.5V +15 50 or 100 NI Lowest voltage noise from a low impedance source
322-12 200Hz to 45MHz 60dB 280pV ±2.5V +15 50 or 100 NI Lowest voltage noise from a low impedance source
322-4 200Hz to 10MHz 40dB 380pV ±2.5V +15 50 or 200 NI Lowest voltage noise from a low impedance source
322-5 200Hz to 60MHz 40dB 380pV ±2.5V +15 50 or 200 NI Lowest voltage noise from a low impedance source
322-6 200Hz to 100MHz 40dB 380pV ±2.5V +15 50 or 200 NI Lowest voltage noise from a low impedance source
322-7 200Hz to 10MHz 60dB 350pV ±2.5V +15 50 or 200 NI Lowest voltage noise from a low impedance source
322-8 200Hz to 45MHz 60dB 350pV ±2.5V +15 50 or 200 NI Lowest voltage noise from a low impedance source
322-9 200Hz to 10MHz 40dB 280pV ±2.5V +15 50 or 100 NI Lowest voltage noise from a low impedance source
351A-1 DC to 12MHz 20 to 40dB 2.5nV ±6V ±15 50 or 4.7k INV or NI Precision variable gain; offset adjust
351A-2 DC to 6.5MHz 40 to 60dB 1.7nV ±6V ±15 50 or 4.7k INV or NI Precision variable gain; offset adjust
351A-3 DC to 3.5MHz 60 to 80dB 1nV ±6V ±15 50 or 4.7k INV or NI Precision variable gain; offset adjust
353A-1 DC to 350MHz 30dB 2nV ±1.5V ±12 50 NI Highest bandwidth

 
Specifications are subject to change without notice.

All specifications valid for 50 ohm load.
Tolerance on noise and bandwidth is ±20%.

Application Notes available on selected models.

Instructions for Specifying Part Number:

For amplifiers available with non-inverting or inverting polarities, add -NI or -INV to part number.

Voltage amplifiers available with an option for input impedance should have the input impedance added to the part number.

 

Examples:

Voltage Amplifiers
Model: 351A-2-50-NI
Input Impedance: 50ohms
Polarity: Non-inverting