OPA657 transimpedance IV -FET high-speed APD\PIN high-speed photoelectric detect

Product Description

Module description

OPA657 transimpedance amplifier is a high-speed and high-bandwidth IV conversion circuit, usually used in pulse light conversion and some weak current detection places. The minimum current resolution of the module is 0.1nA. The module has an analog signal bandwidth better than 100M, compatible and adaptable to most photodiodes PD and avalanche diodes APD. The main chip of the module is TI's high-bandwidth core OPA657. The operational amplifier has the characteristics of extremely high bandwidth and low bias current. Modules are usually used for high-speed photodetection, light pulse detection and fluorescent substance detection, etc.

Shipping list

OPA657 transimpedance amplifier module shipping list
Physical module + PDF schematic diagram + after-sale technical support + electrostatic bag packaging + shockproof foam
Tips:
(1) The module interface of our store is clear and the performance is stable. Please use the schematic diagram provided by our store to do functional verification under the corresponding experimental conditions.
(2) The basic parameters of this module are in the details page. The module information PDF file is provided, and the engineering file is not provided. Please be aware of the buyer. If you have any operational problems, please contact customer service.
(3) Before using the module, please read the details page of this module to understand the power supply and usage restrictions, so as to avoid damage to the module due to improper operation.
(4) All modules in our shop guarantee to provide real module parameters, functions and pictures. All modules are tested and shipped.

Module parameters

Module model: 0PA657 transimpedance amplifier
|Module Type: Current to Voltage Amplifier
Module power supply voltage: ±5V (TYP), ±6V (MAX)
Module power supply current: ± 20mA
Input signal form: single-ended current
Input current range: 300uA (MAX), different feedback resistances correspond to different maximum currents
Minimum resolution of input current: 0. 1nA
Input frequency range: DC- 50MHz (large feedback resistance means smaller bandwidth)
Input impedance: 12K ohm
Output voltage range: 6Vpp (MAX), the output voltage is within the power supply
Output current: ± 5mA (MAX)
Module output voltage: Vout=Iin*R1
Module weight: 10g
Module protection: power reverse connection protection
|Module specification: 41*37*7mm (length * width * height-PCB size)
Module heating: no heat sink (no heat dissipation required for normal operation)
Module heating factor: excessive supply voltage damages the chip or the module is damaged
Module working temperature: -25°C--+75*C (industrial grade)
Module features: output positive and negative power LED indication, low bias current
Application range: photoelectric detector, data acquisition front end, weak signal detection, etc.
Module interface type: SMA signal input and output, 3.81-3PIM power card line socke

Precautions

(1) The power supply of the module is a positive and negative dual power supply, and the voltage cannot exceed 6V.
(2) Since the module is a high-precision device, in order to avoid unnecessary interference, it is recommended to use a linear power supply.
(3) For output signal, it is recommended to use good wire to input and output signals to ensure good grounding.
You can use an oscilloscope or voltmeter to observe the effect. Poor contact or poor-quality wires may cause signal attenuation or excessive noise.

Module test chart

The OPA847 transimpedance amplifier is powered by our ultra-low ripple precision linear power supply (±5V) to test the photoelectric conversion of PD and APD respectively. The first test method uses our PN502 photodiode PD as the current input of the OPA847 transimpedance amplifier as a light receiving device. The desktop function signal generator generates a 1K square wave signal to directly drive the light emitting diode to produce an alternating light signal. Then use a photodiode to convert the changing photocurrent into a voltage signal, and then the laser communication effect can be achieved, as shown in Figure 1.

Since the module is powered positively and negatively, the direction of the photocurrent can be positive or negative. The second test method
Adopt our AD500-8 avalanche diode, with APD special bias power supply, provide APD bias voltage, desktop function signal generator generates 1K AC sine wave signal directly Drive light-emitting diodes to produce alternating light signals, and avalanche diodes to produce alternating light signals Converted into a current signal input module, the module converts the photocurrent into a voltage signal. effect .The results are shown in Figure 2.

Photocell adapter board

Module application: PD, PIN, APD, photocell, photoelectric tube with pigtail, can be adapted to most of our shop
Number photocell
Module weight: 5.9g
Module size: 22*22mm
Positioning hole size: 3mm
The adapter board provides schematic diagrams and PCB files.
Buyers need to weld by themselves according to their own usage, and the default delivery is empty board parts.

Module with photocell use case

Use with APD module

Module shipping list
APD high voltage drive module physical module + after-sale technical support + electrostatic bag packaging + shockproof foam
Tips:
(1) The module interface of our shop is clear and the performance is stable. Please use the information provided by the shop to do functional verification under the corresponding experimental conditions.
(2) The basic parameters of this module are in the details page, no information and engineering documents are provided, please be aware of the buyer, if you have any operational problems, please contact customer service.
(3) Before using the module, please read the details page of this module to understand the power supply and usage restrictions, so as to avoid damage to the module due to improper operation.
(4) All modules in our shop guarantee to provide real module parameters, functions and pictures. All modules are tested and shipped.

Module parameters

Module model: KW-3482 (chip model is not disclosed)
Module type: switching power supply (boost power supply)
Input voltage: 2.5V-16V
Output voltage: 90V (MAX) module with potentiometer, output voltage ADJ
Output current: 10mA (MAX)@50V; 5mA (MAX) @9OV
Shut-off current: 0.0luA
Static power consumption: within 30mA.
Switching frequency: 1. 1MHz
Output ripple: better than 15mV
Module enable: None (enabled by default)
Module protection: input reverse connection protection
Module features: multiple (low noise, low ripple; ultra-small size)
Module application: multiple (APD bias, PD bias, photodetection, digital camera CCD bias, LCD bias, GaAs, FET bias,)
Module weight: 7.2g
Module size: 41*38*8 length X width X height (mm)
Module heating: no need for heat dissipation
Working temperature: 0~70℃ (civilian grade)
Module interface: XH2. 54- 2PIN

Module description

This module is specially designed for PD, APD, MPPC and other special optical devices such as avalanche voltage power supply module. The package positioning can be used with our shop’s OPA847, OPA657 and other high-speed IV conversion modules. This module has high conversion efficiency, wide voltage range input, and ultra-low ripple. Features such as wave noise, applied to sensitive detection signal power; It has strong practicability in photoelectric detection, DTS measurement and control, photon signal detection, APD avalanche quenching, etc.;

Module interface diagram

Module size chart

Precautions

Precautions:
1. Please pay attention to personal safety when testing high voltage;
2. The output current of the module is very small, please do not load high-power devices, it is only suitable for excitation
Voltage;
3. When the module is in use, it needs to use a stable linear power supply without surge and pulse
Otherwise, the module will be easily damaged;
4. The output voltage of the module is up to 95V, please do not over-regulate;
5. The module of this shop does not allow output short circuit or connection of small impedance devices, please let buyers know
Notice.

Matching use case

Adopt our AD500-8 avalanche diode, with APD special bias power supply, provide APD bias voltage, the desktop function signal generator generates 1K AC sine wave signal to directly drive the light-emitting diode to generate alternating light signal, the avalanche diode will be alternating The optical signal is converted into a current signal and input into the OPA657 (OPA847) module, and the OPA657 (OPA847) module converts the photocurrent into a voltage signal. The effect is as follows

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Condition

Brand New

Shipping

This item is shipped directly from our supplier in China with tracking.