AD623 Voltage Amplifier Adjustable Single Power Supply Differential Small Signal

Instrumentation Amplifier AD623 Voltage Amplifier Module Adjustable Single Power Supply Single-ended/Differential Small Signal

Module model: AD623

Module type: Weak signal amplifier

Input signal formation: single-ended or differential (disconnect SB5 jump point to be differential input)
Input voltage range: 100uV-1Vpp

Module power supply voltage: DC6.5V-26V
Module power supply current: 20mA

Output voltage range: ±5V (MAX)
Output current: 10mA (MAX)

Module gain range: 1-10000 times (adjustable sliding)
Gain control method: program control/slip change (jump cap switch)

Program control protocol: SPI (8-bit digital potentiometer)
Bias voltage adjustment range: ±2V (MAX)

Input offset voltage: 200uV (MAX)
Input offset drift: 2uV/℃(MAX)

Input bias current: 125mA (MAX)
Common mode rejection ratio: 90dB (MIN, G=10)

Input voltage noise:  35nV √Hz
Module protection: Yes (diode anti-reverse protection)

Module weight: 16g
Module specifications: 50x50x7mm

Module heats up: no heat sink (excessive input voltage may heat up)
Module heating factor: the input voltage is too large or the module is damaged

Module working temperature: -40℃ - +75℃ (industrial grade)
Module features: output power LED indication, output 5V linear power

Precautions for module use:
(1) The power supply of the module is a dual power supply, and the voltage cannot exceed ±15V

(2) Since the module is a high-precision device, for your unnecessary interference, it is recommended to use a linear power supply

(3) For the output signal, it is recommended to use a good wire for input and output signals, and use an oscilloscope to observe the effect.Poor contact or poor quality wire may cause signal attenuation or excessive noise.

Frequently Asked Questions:

Q: How to adjust zero when the module is single-ended input?

A: The module defaults to a single-ended input. After IN+ is grounded with a resistor, the offset can be adjusted to zero, or the input signal can be adjusted to zero by adjusting R6.

Q: The module is single-ended by default. What should I do if I need to input a differential signal?

A: When you need to input a differential signal, you first need to remove the jumper cap, then remove the R6 potentiometer, the differential input bias cannot be adjusted, and then use IN+ and IN- to input.

Q; What happens when the gain potentiometer is welded and there is no response when adjusting the gain of the potentiometer?

A: The module has a default magnification. The soldered potentiometer and the default resistance R2 are connected in parallel. First of all, the potentiometer is multi-turn and needs to be adjusted a few more turns,
or the adjustment is more sensitive after removing the R2 resistance.

Package:

 1*Signal Amplifier