ماژول تقویت سیگنال AD620 (تقویت سیگنال های ضعیف)

این ماژول مناسب تقویت سیگنال های ضعیف میکرو و میلی ولتی مانند خروجی سنسور های اکتیو می باشد . گین این ماژول از 1.2 تا 1000 قابل تنظیم است . بر روی برد این ماژول دو مقاومت مولتی ترن وجود دارد که یکی برای تنظیم بهره خروجی و دیگری برای تنظیم دقت خروجی است (کالیبراسیون) . از این ماژول می توانید برای تقویت خروجی لودسل ها ، سنسور های پیزو و… استفاده کنید .

مشخصات :

ولتاژ تغذیه3 تا 12 ولت DC

گین 1.5 تا 1000 قابل تنظیم

رنج سگنال ورودی 100uV-300mV

ابعاد 32 * 22 میلی متر

Introduction

AD620 is used as main amplifier with magnification 1.5-10000 times, high sensitivity, low offset and better linearity. Adjustable zero to increase accuracy. High precision, low offset, can be used for AC, DC microvolt, millivolt voltage amplifier, small signal amplification of AC and DC, microvolt, millivolt voltage amplification. Wide input range This product uses AD620 to amplify and amplify microvolts and millivolts. Compared with the LM358 in the market, it has high amplification precision and good linearity and the maximum voltage output range is ±10V. The magnification potentiometer is used to amplify the input signal, and the magnification is up to 1000 times, which can be adjusted with just one potentiometer. Adjust the zero point by adjusting the adjustable zero point potentiometer, improve accuracy, and there will be no zero drift phenomenon, to meet customer needs. The negative voltage output module uses 7660A negative voltage chip output negative voltage (-Vin), which can be supplied to customers to drive other dual power loads. Small size 32*22mm and four 3mm positioning holes. 2.54mm standard spacing evenly distributed around both sides and two lines.

Specification

Input voltage: 3-12VDC (batch can be customized)
Magnification: 1.5-1000 times adjustable, zero adjustable
Signal input voltage: 100uV-300mV
Signal output range: ± (Vin – 2V)
Negative pressure output: greater than -vin. Due to the internal resistance of the negative voltage chip output, the actual output is greater than -vin, the load power is larger, the negative pressure drop is larger
Offset voltage: 50μV
Input bias current: 1.0nA (max)
Common mode rejection rate: 100dB
Offset voltage shift: 0.6 μV/° c (max)
Stable, time: max 2 µm/month
Size: 32*22mm
The output signal has small distortion, high frequency and noise filtering, and is more suitable for amplifying small signals.

Features

1.Wide Input Range: adopt AD620 amplification ,and the max voltage output range is +/-10V
2.Amplification Times: adopt potentiometer for amplifying input signals, and the amplification times can be up to 1000 times
3.Adjustable Zero Point: use zero potentiometer to adjust the zero point  if improves the precision, it won’t lead to zero point drifting
4.Negative Voltage Output: adopt 7660A negative voltage chip output negative voltage (-Vin)
5.Smalle Size:32*22mm,and the pitch is 2.54mm