Description
BRTHX750 Electric scale signal converter module is a load cell sensor signal ad conversion module. It is designed to convert the changes/movements into resistance value and outputs digital signal after processing through precision conversion circuit. That load cell AD converter module supports PC communication through TTL-RS232 converter. It has eight pins for PCB installation and further development, very convenient to use.
Features & Benefits
● 24bit high accuracy AD conversion chip.
● 80Hz frequency refresh.
● +/-20mV signal input, 5V operating power supply.
● Simple integrated circuit design with 8 pins.
● High reliable, high sensitivity and efficient output.
● Fast speed measurement.
● Support communication with PC via TTL ports, set via software.
Typical Applications
● Measure pressure, force, displacement, strain, etc.
● Measure torque, acceleration, etc.
● Electric scale sensor signal conversion.
● HX711 ADC weighing signal data acquisition.
Technical Parameters
| Terms | TYP Value | Note |
| Differential voltage input | +/-20mV | Full scale differential input voltage +/-40mV |
| Data accuracy | 24 bit | 24 bit A/D Conversion chip |
| Refresh frequency | 80Hz | Refresh data frequency |
| Operating power supply | 5VDC | |
| Operating current | <10mA | |
| Output Ports | TTL | Need TTL to RS232 converter |
| Communication Protocol | HEX Character | Set via Software |
| Baud rate | 9600bps | No check bit, 8-byte data, 1 byte stop. |
| Data | Complement of two’s | |
| Operating temperature | -10 to +50℃ | |
| Storage temperature | -40 to +65℃ | |
| Size | 38x22x10mm | LxWxH |
Installation & Wiring Circuit
Pin Description
| Pin Code No | Description |
| P2 Pin terminals | |
| 5V | 5V operating power supply + |
| GND | 5V operating power supply – |
| RXD | Receiving pin, connect to MCU TXD |
| TXD | Transmitting pin, connect to MCU RXD |
| CH1 Pin terminals | |
| VDD | Electric scale power supply + (red wire) |
| I+ | Electric scale same phase input (green wire) |
| I- | Electric scale reverse phase input (white wire) |
| GND | Electric scale power supply -(black wire) |
*Please do not connect the AD Converter module to serial port of PC directly, it needs a RS232 to TTL converter to do signal conversion, then connect the AD converter module to the PC through RS232 to TTL converter, otherwise, it may cause damage to the electric scale AD module. (RS232 signal is from -15V to +15V, TTL-232 signal is from 0V to +5V.)
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