UAF42 범용 조절가능 주파수 필터
(UAF42 Universal Adjustable Frequency Filter)
개요
- 본 제품은 UAF42 범용 조절가능 주파수 필터입니다.
- 로우 패스, 하이패스, 밴드 패스 필터로 설정이 가능한 범용 액티브 필터 모듈입니다.
특징
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Module model UAF42 Module type universal adjustable filter Module supply voltage ±5V-±15V Module power supply current 10mA (Max) Module control mode potentiometer Filter type high-pass, low-pass, band-pass; the center frequency can be customized according to customer requirements Low-pass cut-off fre range 100KHz (MAX); the default potentiometer cut-off frequency range is within 5K; the maximum cut-off frequency is not supported, users need to replace the RF1 and RF2 potentiometers according to their own needs Qualcomm cut-off fre range 30KHz (MAX); the default potentiometer cut-off frequency range is within 2K; the maximum cut-off frequency is not supported, users need to replace RF1 and RF2 potentiometers according to their own needs Bandpass center fre range 50Hz-40KHz; the default potentiometer cut-off frequency range is within 500Hz-5KHZ; the minimum and maximum center frequencies are not supported, users need to replace the RF1 and RF2 potentiometers according to their own needs Input signal form single-ended; default VIN2 input Input signal voltage range less than positive and negative power supply Input frequency range DC-1MHz Module gain range 40dB (MAX) Q value adjustable range 20 (MAX) Input output characteristics DC input and output; output with DC component, please add DC blocker to the radio frequency equipment, or directly use oscilloscope Module protection none; no reverse connection protection, unlimited current protection -
Module features: multi-function filter, universal adjustable filter
Module application: power system, sensor signal processing, transmitter and receiver, signal generator
Module specifications: 50*50*15mm; length*width*height-PCB size
Module weight: 20.6g
Module working temperature: 0-75℃; civil grade
Interface description
Precautions for module use
(1) The module power supply is a positive and negative dual power supply, and the voltage cannot exceed positive and negative 18V.
(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 the output signal, it is recommended to use the SMA to BNC line to input and output signals. Use an oscilloscope to observe the effect. Poor contact or poor quality wires may cause signal attenuation or excessive noise.
(4) The filter measurement generally adopts the oscilloscope point frequency method. If possible, you can use a frequency sweeper or a vector network analyzer to test. Please add a DC block
문서
- document
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FAQ
Q: There is no problem when the module first got the output. After adjusting the potentiometer, now there is no input signal, there will be output signal. How to get it?
A: From the perspective of the phenomenon, it should be over-adjusted. The module is self-excited. You need to turn RF1 and RF2 clockwise a few more turns at the same time. The RQ potentiometer can be turned counterclockwise a few turns. Reduce the center frequency and Q value. Will be self-excited.
Q: Can UAF42 adjust the bandpass from 20HZ to 20KHz?
A: No, UAF42 can only be adjusted to a narrowband filter, such as 1K center frequency 100hz bandwidth, if a wideband filter is needed, we have a custom fourth-order filter to do it.
Q: The input signal of the module is 1Vpp, the output signal is too large, and how to adjust the unevenness in the band 2
A: If you don't need to amplify, just use the channel 1 output. The gain can be controlled by the RG potentiometer. The unevenness in the band is generally that the Q value is too high. Adjust the Q value counterclockwise to reduce the in-band fluctuation.
UAF42 test chart
UAF42 high pass test curve
Cut-off frequency: 10Hz--30KHz (MAX)
UAF42 low pass test curve
Cut-off frequency: DC--40KHz (MAX)
UAF42 bandpass test curve
Center frequency: 1Hz--35KHz (MAX)
연관제품
- 연관제품 1