MaiJi BH45B1225 Low Noise 2Pcs I2C IIC 4Channel 24bit ADC Analog to Digital PGA High Accuracy Low Power Delta Sigma Converter 24-bit ADC I2C Programmable Gain Amplifier
Adopts BH45B1225 chip, low noise, 4Channel 24bit Delta Sigma high precision ADC, Low Power I2C Programmable Gain Amplifier.
Applied in battery detection, instruments, health monitoring, precision sensors and other products.
The supply voltage range of this circuit is 2.4V-5.5V,, which can supply the VDD positive voltage according to the needs of the circuit. Power supply of over 5.5V can damage the chip.
R1-R4 are limits resistance on 4 Channel respectively, can increase R5-R8 ground resistance according to the needs of the circuit, size 0805.
Signal channel composition: R1、R5=AD0；R2、R6=AD1; R3、R7=AD2; R4、R8=AD3 ; The resistance of the R1-R4 is 1Kohm. Changing this resistance can change the amplitude of the signal.
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