Photodiode Amplifier
CE?marked?Current Amplifier Modules Specifications
Module: Variable Low Noise Current Amplifier Variable Gain High Speed Current Amplifier
Transimpedance Gain: 103 to 1011Ω (adjustable in decade steps) 102 to 108Ω (adjustable in decade steps)
Bandwidth (-3 dB): 500 KHz max. 200 MHz max.
Input Current Noise (A/ Hz): See datasheet on our website See datasheet on our website
Bias Voltage: ±10 V, max., 22 mA, Adjustable by trimpot or external control voltage Adjustable by trimpot or external control voltage
Offset Adjustment: Adjustable by trimpot or external control voltage Adjustable by external control voltage
Remote Control: Yes Yes
Case Size (mm): 150 L x 55 W x 44 H 150 L x 55 W x 40 H
Operating Temperature: 0 to 60° C 0 to 60° C
Power Supply: ±15V, +110 mA/-90 mA (not included) ±15V, +110 mA/-90 mA (not included)
Weight: 320 g (0,74 lbs) 320 g (0,74 lbs)
• Can Function as Optical Power Meter
• 1 Part in 20.000 Resolution
• Full Scale Input Range of ±20 nA to ±20 mA
This amplifier unit is a low noise, high gain, transimpedance amplifier that is designed to provide a direct digital
readout of the current generated from a photodiode, photomultiplier, or similar current source. If a reading in
Watts in desired, simply toggle the A/W setting. By adjusting the A/W setting on the amplifier to equal detector
responsivity, the amplifier can measure the incident optical power. For detectors that require a reverse bias, the
unit can apply a selectable bias in series with the photodetector.
An output voltage port provides a ±2 V full-scale analog signal directly proportional to the LCD display reading.
For noise-sensitive measurements, the unit can be disconnected from its external supply and powered from
its internal batteries. Battery low indicator is activated on the LCD when batteries need recharging via included
power supply. Universal power supply includes wall connectors for US, UK, Europe and Australia. RS-232 &
Power cables included.
Max. Input Without Damage: ±25 mA
Full Scale Ranges: ±20 nA to 20 mA in decade steps
A/W Setting: 0,100 to 1,0000 in 0,005 increments;
Defaults to 1 when not engaged
Output Impedance: 100Ω
Bias Voltage: Selectable -14 V to +14 V in 7 mV increments;
Defaults to 0 when not engaged
Offset Control: Offsets the display by up to ±20.000 counts
Noise: < 1pA p-p, DC-1 kHz with < 10pF Detector capacitance
Frequency Response (-3 dB): 20 nA: DC to 2,0 kHz, 100 nA: DC to 5,25 kHz,
2 μA: DC to 22 kHz, 20 μA, 200 μA, 2 mA, 20 mA: DC to 40 kHz
Display: 41/2 digit, 0,4" high LCD
Power Requirements: Rechargeable NiMH batteries w/ approx. 10 hours of use
External Supply: 85 to 260 V AC, 50-60 Hz universal supply, 10 W max.
Dimensions: 5,5" W x 2,5" H x 8,5" L
Operating Temperature: 0° to 40°C
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Current Amplifier Modules
• Convert Small Currents to Usable Voltages
• Variable Gain
• High Speed and Low Noise Designs
Current Amplifier Modules are current-to-voltage conversion devices used to amplify a small current from a
photodiode or photomultiplier with very low noise. Low Noise and High Speed amplifiers are available with
variable gain functionalities. The Low Noise amplifier is a two stage, low-noise amplifier with switchable AC/
DC coupling, adjustable bias voltage offset, and a 10 Hz lowpass filter. The High Speed model also features
AC/DC coupling in addition to an adjustable offset for baseline correction, adjustable bias for use with fast
photodiodes, and a switchable 10 MHz and 1 MHz low pass filters. Note: #59-178 and #59-179 require specified
power supplies.
High Speed Current Amplifier (#59-179)
for?info?made?hazardous?system?new?EO?designed?&?new?CE?marked?military
call?for?made?for?info?hazardous?caution:?harsh?Photodiode Amplifier
Description Stock No. Price
Photodiode Amplifier #57-601 €1.346,17
#57-601
#38-903
#53-373
caution:?harsh?Current Amplifier Modules
Description Stock No. Price
Variable Low Noise Current Amplifier #59-178 €3.088,00
Variable Gain High Speed Current Amplifier #59-179 €3.184,50
110-240V Power Supply for #59-178/#59-179 #59-180 €241,25
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