1.CS1237
Product Details：
With external voltage regulator, use TL431 chip external voltage (2.5V) as the excitation source of external pressure sensor, voltage is more stable.
Chip function description:
CS1237 is a high precision, low power consumption ADC chip, one differential input channel, built-in temperature sensor and High precision oscillator.
The PGA of the CS1237 can be 1, 2, 64, or 128. The default value is 128.
CS1237 ADC data output rate in normal mode can be 10Hz, 40Hz, 640Hz, or 1.28kHz by default
Is 10Hz;
MCU can communicate with CS1237 through 2-wire SPI interface SCLK and DRDY/DOUT to advance it
Row configuration, such as channel selection, PGA selection, and output rate selection.
Main functions and features of the chip:
Built-in crystal oscillator
Integrated temperature sensor
With the Power down function
2-wire SPI interface, the maximum speed is 1.1MHz
ADC functional characteristics:
24-bit no loss code
PGA magnification: 1, 2, 64, 128
1 24-bit differential input without loss of code, ENOB is 20 bits (5V) 19.5 bits (3.3V) when PGA=128
P-P noise: PGA=128, 10Hz: 180nV;
INL is less than 0.0015%
The output rate can be 10Hz, 40Hz, 640Hz, or 1.28kHz
In-band short function
1.2 Chip Application Scenarios
Industrial process control
Electronic balance
Liquid/gas chemical analysis
hematometer
Intelligent converter
Portable equipmen
2.CS1238
With external voltage regulator, use TL431 chip external voltage (2.5V) as the excitation source of external pressure sensor, voltage is more stable.
Chip function description:
CS1238 is a high precision, low power consumption ADC chip, two differential input channels, built-in temperature sensor and High precision oscillator.
The PGA of the CS1238 can be 1, 2, 64, or 128. The default value 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 2-wire SPI interface SCLK and DRDY/DOUT to advance it
Row configuration, such as channel selection, PGA selection, and output rate selection.
Main functions and features of the chip:
Built-in crystal oscillator
integrated temperature sensor
with the function of Power down
2 line SPI interface, fast rate of 1.1 MHz
DC functional characteristics:
24 no code
PGA magnification optional: 1, 2, 64, 128
2 channel integration 24 differential input without loss of code, when the PGA = 128 ENOB of 20.7 (working in 5 v) \ 20.2
Bit (working at 3.3V)
P - P noise: PGA = 128, 10 hz: 150 nv;
INL is less than 0.0015%
Optional: output rate 10 hz, 40 hz and 640 hz, 1.28 kHz
with the function of within short
1.2 Chip Application Scenarios
industrial process control
Electronic balance
liquid/gas chemical analysis
blood meter
smart transducer
portable devices
