Description
Module Introduction
This module is a dual-channel amplifier module designed for SOP-8 packaged dual-operation amplifier, with strong compatibility between module function and chip model. It is basically applicable to most SOP8 series dual operational amplifier chips on the market, and is very convenient to use. The input and output of the signal are all coaxial SMA high-frequency connectors, which can reduce the loss amplitude of the signal and shield the interference of other signals. At the same time, the on-board circuit can be changed into in-phase, reverse phase, cascade and other functions according to the user's needs. The module uses the in-phase proportional amplification circuit, and uses the on-board transformer manual potentiometer to adjust the amplification factor. The PCB board is compatible with RF dual operational amplifiers. The routing and design are in accordance with RF wiring standards, and is compatible with low-frequency signals. Both in terms of function and practicality, the module has been verified and practiced by a large number of chips.
Shipping list
Physical module+PDF schematic+after-sales technical support+electrostatic bag packaging+shockproof foam
Reminder:
(1) The module interface of our store is clear and the performance is stable. Please verify the function under the corresponding experimental conditions in combination with the schematic diagram provided by our store.
(2) The basic parameters of this module are all in the details page, and the module data PDF document is provided, but the engineering document is not provided. The buyer should be informed. If there is any operation problem, please consult the customer service.
(3) Before using the module, please read the details page of the module carefully to understand the power supply and use restrictions, and avoid damaging the module due to improper operation.
(4) All modules in our store are guaranteed to provide real module parameters, functions and pictures, and all modules are delivered after detection.
Module parameters
Parameter name；Parameter value；remarks
Module model；THS4012
Module type；High-speed operational amplifier；Voltage feedback amplifier
Module supply voltage；±4.5V~±16V ；Recommended ± 5V power supply
Module supply current；±10mA；For reference only
Gain bandwidth product；290MHz；Bandwidth decreases as gain increases
Module input impedance；50 Ω
Module output impedance；Low resistance
Output current；175mA（MAX）
Module gain range；100 times (MAX)；Too small magnification may cause self-excitation
Chip input offset voltage；6mV(MAX)
Chip input offset drift；15uV/℃（MAX）
Chip input bias current；6uA(MAX)
Chip input voltage noise；7.5nV√Hz（10KHz）
Module weight；20g
Module specification；50*50mm；Length * width - PCB size
Module heating；No heat sink；Low power consumption, no heat dissipation
Module heating factor；The input and output voltage is too large or the module chip is damaged
Module features；Positive and negative power LED indication, potentiometer adjustable magnification
Scope of application；High-frequency small-signal amplification, high-speed data acquisition front-end amplification, etc
Module interface type；SMA signal signal input and output, 5.08 blue power card holder
Precautions for module use
(1) The module power supply is dual power supply, and the voltage cannot exceed ± 16V.
(2) Since the module is a high-precision device, it is recommended to use linear power supply to avoid unnecessary interference.
(3) It is recommended to use good wire input and output signals and use oscilloscope to observe the effect. Poor contact or poor quality wire may cause signal attenuation or excessive noise.
Frequently asked questions
Q: If I want to replace the operational amplifier myself, how can I confirm whether my chip is compatible with this board?
A: You can check whether the pin in the chip data is consistent with the key position label of the module chip. If it is consistent, it can be replaced.
Q: What happens when the amplitude of input signal access module decreases?
A: Generally, due to the impedance problem, the input impedance of high-speed operational amplifier is 50 Ω. If your signal output capacity is not enough, it will be pulled down.
Q: The power supply of the module is normal, and there is a high-frequency sine wave output when there is no input?
A: Because it is a high-speed amplifier, there may be self-excitation. You can try to adjust the potentiometer. Generally, self-excitation will not occur when the magnification is large.
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