CS1238 24 -bit ADC module plate on TL431 external quasi -quasi -chip dual channel weighing sensor 24bit

Link: https://pan.baidu.com/s/1ORAAVWK7XIT7Eqg?pwd=1234

Extract code: 1234

Comes with an external regulator and use the external voltage (2.5V) of the TL431 chip as an incentive source of the external pressure sensor, and the voltage is more stable.

Chip function description
CS1238 is a high -precision, low -power modulus conversion chip, two differential input channels, built -in temperature sensor and
High -precision oscillator.
CS1238's PGA optional: 1, 2, 64, 128, the default is 128.
The ADC data output rate of CS1238 is optional: 10Hz, 40Hz, 640Hz, 1.28kHz, the default is 10Hz;
MCU can communicate with CS1238 through the 2 -line SPI interface SPI interface SPI interface SPI interface, DRDY / DOUT
Row configuration, such as channel selection, PGA selection, output rate selection, etc.
1.1 The main functional characteristics of the chip
 Built -in crystal
器 Integrated temperature sensor
O Bring Power DOWN function
口 2 line SPI interface, the ZUI fast rate is 1.1MHz
ADC functional characteristics:
 24 -bit without code loss
倍 PGA amplification multiple is optional: 1, 2, 64, 128
4 Integrated the 2 -channel 24 -bit differential input, and at PGA = 128, ENOB was 20.7 bits (working at 5V) 20.2
Position (working at 3.3V)
： P-P noise: pga = 128, 10Hz: 150nv;
. INL is less than 0.0015%
选 Output rate is optional: 10Hz, 40Hz, 640Hz, 1.28kHz
The short function
1.2 chip application occasion
 Industrial process control
 Electronic scale
化 Light/Gas Chemical Analysis
   
 Smart converter
 Portable equipment