LC AD7705 module is an AD acquisition module, there are two full differential input channels. AD7705 inside with a programmable gain amplifier, chip internal input with buffer amplifier, so can be directly connected sensor.
Features and Specifications
3.3V or 5.0V DC power supply.
MCU interface: SPI.
the main ADC chip: AD7705.
an external reference voltage LM285-2.5 (imported genuine original).
the input circuit with a resistor divider and the RC filter, enabling customers to change their own gain range.
AD7705 Dual 16-bit ADC Data Acquisition Module SPI Precise TM7705 .
3.3V or 5.0V DC power supply.
MCU interface: SPI.
The main ADC chip: AD7705.
An external reference voltage LM285-2.5 (imported genuine original).
Input circuit with a resistor divider and the RC filter, enabling customers to change their own gain range.
Chip with programmable gain amplifier, the gain range: 1-128 times.
Chip internal input buffer amplifier, can be directly connected sensor.
Technical Specifications:
- Working voltage: 3.3V or 5.5V;
- MCU interface: SPI;
- Maximum power consumption: 3V voltage, maximum power consumption is 1mW;
- Standby current: A maximum of 8uA.
- The board size: 30*16mm
The board function description:
- VCC: The power supply side
- GND: Ground;
- DRDY: Logic output;
- DOUT: Serial data output;
- DIN: Serial data input;
- SCK: The serial clock;
- CS: Chip Selection;
- RST: Reset terminal;
- AIN1+: Sampling points of the anode;
- AIN1-: Sampling points of the negative; //Get rid of R3 can make differential input
- AIN2+: Sampling points of the anode;
- AIN2-: Sampling points of the negative; // Get rid of R6 can make differential input
- Remove the R2,R5 can improve the input impedance.
Applications
- Intended for the measurement of wide, dynamic range, low frequency signals, such as those in industrial-control or process-control applications.