Description
OPA690 500MHz Wideband Voltage-Feedback Operational Amplifier Op Amp 60dB 190mA Open Loop Amplifier for ADC Buffer
Product Description
This module is a single-channel amplifier module designed for SOP-8 packaged single operational amplifier. The module function and chip model are highly compatible. It is basically suitable for most of the SOP8 series single op amp chips on the market, and it is very convenient to use. The input and output of the signal all use coaxial S-M-A 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 to in-phase, inverting, following, integrating and transimpedance functions according to user needs. , The module adopts the same phase proportional amplifier circuit, and uses the on-board variable manual potentiometer to adjust the magnification. The PCB board is compatible with RF single op amps, and the wiring and design are in accordance with RF wiring standards, and are compatible with low-frequency signals. Modules are both functional and practical.
Specification
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item
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value
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Module model
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OPA690
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Module type
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Wideband Voltage Feedback Operation
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Input signal form
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Single-ended
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Input voltage range
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2Vpp (MAX), generally within the power supply
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Module input impedance
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50ohm
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Module supply voltage
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±2.5V~±6V
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Module power supply current
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<100mA, for reference only, this parameter will be different for different op amp chips
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Module output impedance
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Low resistance
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Output voltage range
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±5V (MAX)
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Output current
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low resistance
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Gain bandwidth product
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220MHz (G=2), unity gain stable: 500MHz, bandwidth decreases as gain increases
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Module gain range
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100 times (MAX), if the magnification is too small, it may be self-excited
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Chip input offset voltage
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1mV (Typ)
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Chip input offset drift
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10uV/℃ (MAX)
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Chip input bias current
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3uA (Typ)
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Chip input voltage noise
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5.5nHz (1KHz)
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Module protection
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Yes, diode anti-reverse protection
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Module weight
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16g
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Module specifications
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50*36*23mm L*W*H - PCB size
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Module heating
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No heat sink, low power consumption, no need for heat dissipation
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Module heating factor
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The input and output voltage is too large or the module chip is damaged
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Module working temperature
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-40C~+75℃, industrial grade
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Module features
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Positive and negative power LED indication, potentiometer adjustable magnification
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Scope of application
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High-frequency small signal amplification, high-speed data acquisition front-end amplification, etc.
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Module interface type
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SMA signal signal input and output, 5. 08 blue power card holder
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Installation Instructions
Module usage precautions
(1) The power supply of the module is a 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 linear Power supply. (3) It is recommended to use a good wire for the output signal to input and output the signal, and use an oscilloscope to observe the effect. Poor contact or poor quality wire may cause signal attenuation or excessive noise.
Common questions
Q: How can I confirm whether my chip is compatible with this board? A: You can see whether the pins in the chip data are consistent with the key position labels of the module chip -, - It can be used instead. Q: There is no problem with my signal being tested with an oscilloscope. What happens when the amplitude of the access module port becomes smaller? A: It is generally due to impedance problems. The input impedance of high-speed op amps is 50 ohms. If your signal output capability is not enough, it will be pulled down. Q: The module is powered by positive and negative power, and there is a 300MHz sine wave output when there is no input. What is the situation? A: Since it is a high-speed amplifier, it may be self-excited. You can try to adjust the potentiometer. Generally, it will not self-excite when the magnification is large.
Details Images