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Transimpedance amplifier for Light Detectors

Silicon, Germanium and Indium Gallium Arsenide Photodiodes offer best linearity correlation of light input to their electrical signal when are operated in photovoltaic mode. Simulation of a real short circuit at a signal amplifier input requires a current to voltage conversion amplifier with very low offset voltage independent of the selected gain range.


Low noise output signal

The P-9202 amplifiers assembled in a metal shielding housing equipped with low noise feedback resisters and gold contact read-relays for gain selection offer very low noise voltage signals.


Short rise time model P-9202-4

The P-9202-4 model is a fast amplifier with a 8-step switchable sensitivity range from 300 nA/V to 1 mA/V and a nearly constant slew-rate of 1 µs in all gain ranges. Photodiodes can be operated in photovoltaic or photodiode mode (-5 V bias voltage). Useful in applications requiring high bandwidth up to 330 kHz or short 1 µs rise time.


General purpose model P-9202-5

The P-9202-5 model is a general purpose amplifier featuring an 8-step switchable sensitivity range from 100 pA/V to 1 mA/V and gain dependent slew-rate. Photodiodes can be operated in photovoltaic or photodiode mode (-5 V bias voltage).


Very high gain model P-9202-6

The P-9202-6 model is a very high sensitivity amplifier with an 8-step switchable sensitivity range from 10 pA/V to 100 µA/V and variable, gain dependent slew rates. This model is suited to applications involving very low photodiode signals starting in the 10 femto A (0.01 pA) range.

Product
Power Supply

(16 - 24) VDC / 80mA 
Connector: Friwo Nb. 105316

Important Note: only use plug-in power supply supplied

Current Input

Connector :BNC Socket (Shield: -5V BIAS voltage or GND)

Max. signal current

± 5 mA

max. Input Voltage

DC-Supply Voltage / 2

Bias

± 5 pA (@ 20 °C)

Bias

-5 V bias voltage at shield of Input BNC Socket (switchable to 0 VDC or -5 VDC). If -5 V BIAS voltage is used, the anode of the detector has to be connected to the shield and the cathode to the inner contact of the BNC Input connector.

Output Voltage

Output voltage corresponding to the input current
Connector: BNC Socket
Max. Output Voltage: ± 9 V
Max. Output Current: ± 5 mA

If an oscilloscope is used to measure the output voltage, set the input impedance of the oscilloscope to 1MOhm.

Current / Voltage gain ranges

8 (see "Range Data Specification")

Measurement range

10 position rotary switch (OFF, REM, 8 Ranges)

Interface

Optocoupler input for external gain switch
(5V / 25mA)
Connector: DSUB 9 pins, female

Remote Range Control

The range can be selected via the remote interface. The rotary switch therefore has be set to "REM". By applying +5VDC voltage (current max. 25mA) at the corresponding control pin of the remote connecter the measurement range can be set.

Connector REMOTE (Connector Type: DSUB 9 pin female)

Pin 1 Remote range group selection
(Range 1 / 3 / 5 / 7 or Range 2 / 4 / 6 / 8
Pin 2 Remote range 7/8
Pin 3 Remote range 5/6
Pin 4 Remote range 3/4
Pin 5 Remote range 1/2
Pin 6 GND
Pin 7 Analog output (ROUT = 1k)
Pin 8 Remote range common
Pin 9 free

The desired range is selected by applying a voltage of 5VDC between the corresponding pins an pin 8

Range Pin 5 Pin 4 Pin 3 Pin 2 Pin 1
1 5V 0* 0* 0* 0*
2 5V 0* 0* 0* 5V
3 0* 5V 0* 0* 0V
4 0* 5V 0* 0* 5V
5 0* 0* 5V 0* 0*
6 0* 0* 5V 0* 5V
7 0* 0* 0* 5V 0*
8 0* 0* 0* 5V 5V
Miscellaneous
temperature range

operation: 5 °C bis 40 °C

storage: -10 °C bis 50 °C

Dimensions

105 mm x 80 mm x 45 mm

compatible

compatible

Warranty

12 month

Weight

500 g

Options
Accessories

Plug-in power supply

Important Note: only use plug-in power supply supplied
If another external power supply is used, be sure that the power supply has no electrical connection to input current source (detector) and to the output voltage measurement instrument. This is important, because the P-9202 uses internal virtual ground which adjusts the GND to the middle of the external supply voltage.

Type Description File-Type Download
Datasheet P-9202-4 PDF
Produktname Product Image Description Show product
VL-3701 Detector head for the measurement of photopic illuminance in Lux [lx].

Features: f1 ≤ 3 %, f2 ≤ 1.5 %, 0.5 nA/lx, 20mm height, for the usage with Optometers and amplifiers, calibration certificate

VL-1101 Photometric detector head with VL-11 mount.

Features: modular detector for use with integrating spheres, front lenses etc. For use with optometers and signal amplifiers

ISD-5-VL Integrating sphere detector for luminous flux (lm) of 2π spot sources.

Features: 50mm dia, BaSO4 coating, 12.5mm dia port, for the usage with optometers and signal amplifiers, Calibration certificate

ISD-10-VL Integrating sphere detector for luminous flux (lm) of 2π spot sources.

Features: 100 mm dia, BaSO4 coating, 15 mm dia port, for the usage with optometers and signal amplifiers, Calibration certificate

RW-3701 Detector head for the measurement of irradiance in W/m².

Features: spectral responsivity from 400-500nm (BLUE), cosine field-of-view, for the usage with optometers and amplifiers, calibration certificate.

ISD-0.8-SiLP Integrating sphere detector with short rise time for Laser power in W.

Features: 8 mm dia, ODM98 coating, 400 nm - 1100 nm responsivity, optional SMA Adapter, for the usage with fast optometers and signal amplifiers, Calibration certificate

ISD-1.6 Si Integrating sphere detector for Laser power in W.

Features: 16mm dia, 3mm dia port, BaSO4 coating, 400-1100nm responsivity, for the usage with optometers and signal amplifiers, Calibration certificate

ISD-3P-Si Integrating sphere detector for Laser power in W.

Features: 30 mm dia, 5 mm dia port, synthetic ODM98 coating, 400 nm - 1100 nm responsivity, for the usage with optometers and signal amplifiers, Calibration certificate

ISD-5P-Si Integrating sphere detector for Laser power in W.

Features: 50 mm dia, 10 mm dia port, synthetic ODM98 coating, 400 nm - 1100 nm responsivity, for the usage with optometers and signal amplifiers, Calibration certificate

PD-11 series Detector head with DP-11 mount.

Features: modular detector for use with integrating spheres, front lenses etc, Si, SiLP, InGaAs, SiC, GaP photodiodes, for use with optometers and signal amplifiers

ISD-3P-IGA Integrating sphere detector with InGaAs photodiode and 30 mm sphere for Laser power in W.

Features: 800 nm - 1800 nm spectral responsivity, 5 mm dia measurement port, synthetic ODM98 coating, optional SMA Adapter, for the usage with Optometer and signal amplifiers, calibration certificate
UV-3701 Detector head for the measurement of irradiance of UV radiation in W/m².

Features: spectral responsivity from 315-400nm (UV-A), cosine field-of-view, for the usage with optometers and amplifiers, calibration certificate.
Article-Nr Modell Description Request / Compare
Product
15295281 P-9202-4

Amplifier, with power supply and manual


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