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2pcs CS1238 24-bit ADC Module with TL431 Reference for Dual-Channel Load Cell Precision Sensor Interface
Disponibilidad
En stock
En stock
Peso con empaque
0.20 kg
0.20 kg
Devolución
Sí
Sí
Condición
Nuevo
Nuevo
Producto de
Amazon
Amazon
Sobre este producto
- 【High-Precision Dual-Channel ADC Module】 24-bit resolution; 20.7 effective bits @ 5V; dual differential input channels; programmable PGA gain 1/2/64/128 times; Suitable for low-level signal acquisition
- 【Wide Voltage and Temperature Range】 Operates on 2.7V to 5.5V DC; -40°C to +85°C industrial temperature rating; onboard TL431 reference source with 0.5% accuracy; stable performance in harsh Settings
- 【Low Power Consumption and Energy Efficiency】 Typical operating current ≤1.2mA; standby current ≤0.1µA; 72-hour operation with 2000mAh battery; suitable for portable and battery-powered systems
- 【Flexible SPI Interface and Configuration Options】 2-wire SPI protocol up to 1.1MHz; programmable output rate 10Hz to 1.28kHz; PGA and rate selection via external pins; easy integration with microcontrollers
- 【Robust Design for Reliable Performance】 Built-in self-calibration algorithm; shielded wiring support; anti-interference layout; compatible with for Arduino and STM32 platforms; minimal calibration drift under varying conditions
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$32,81
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Product Parameters ( ): Master Chip: CS1238-SOP14 (Chipsea Tech , Reliable) Supply Voltage: DC 2.7V-5.5V (Wide Voltage Compatible, Ripple ADC Resolution: 24-bit No Missing Codes, Effective Number of Bits (ENOB): 20.7-bit @ 5V (PGA=128) Input Channel: Dual Differential Input (AIN1+/AIN1-, AIN2+/AIN2-) PGA Gain: Programmable 1/2/64/128 (Default: 128) Output Rate: Programmable 10Hz/40Hz/640Hz/1.28kHz (Default: 10Hz) Reference Voltage: Onboard TL431 Precision Source, Output 2.5V ±0.5% (Temp. Drift ≤30ppm/℃) Interface Protocol: 2-wire SPI (SCLK, DOUT/DRDY), Max Rate 1.1MHz Operating Temperature: -40℃ ~ +85℃ (Industrial Wide Temp Certified) Power Consumption: Operating Current ≤1.2mA (Typ. @10Hz); Standby Current ≤0.1μA (Shutdown Mode) Main Pin Functions ( ): VDD: Power Supply Positive (2.7V-5.5V DC). Parallel 10μF ceramic + 0.1μF filter caps, trace length ≤3cm. GND: Power/Signal Common Ground (Single-point star grounding, impedance ≤0.1Ω). VREF: Reference Voltage Input (Onboard TL431 output, 2.5V ±0.5%, load current ≤10mA). AIN1+: Channel 1 Non-inverting Input (Connect to load cell excitation+, input impedance ≥1GΩ, differential voltage ±20mV). AIN1-: Channel 1 Inverting Input (Same as AIN1+ spec, wiring length matching deviation ≤0.5mm). AIN2+: Channel 2 Non-inverting Input (Same as AIN1+). AIN2-: Channel 2 Inverting Input (Same as AIN1-). SCLK: SPI Clock Input (MCU clock pin, rising edge sampling, frequency ≤1.1MHz). DOUT/DRDY: Multiplexed Pin: SPI Data Output (24-bit ADC value) / Data Ready Indicator (Active Low).
