CS1232-TS

CS1232 is a high-precision, low-power Sigma-Delta ADC IC featuring one integrated Sigma-Delta ADC channel. The ADC employs a 3rd-order Sigma-Delta modulator with PGA amplification implemented via a low-noise instrumentation amplifier architecture, supporting selectable gains of 1, 2, 64, and 128. At PGA=128, the effective resolution reaches 20.8 bits. The CS1232 supports selectable output rates of 10Hz/80Hz. It integrates an on-chip RC oscillator, with the option to use an external crystal or directly input a clock signal via the CKIN/XTAL1 pin. The CS1232 also features ultra-low-power modes including Standby and Power Down.

Applications

• Industrial process control
• Electronic scales
• Liquid/gas chemical analysis
• Blood analyzers
• Smart transducers
• Portable devices

Key features

• Integrated low-noise PGA with selectable gain of 1, 2, 64, 128
• Integrated 2-channel 24-bit no missing code differential input ADC, ENOB 20.8 bits at PGA=128
• P-P noise: 10Hz: 139nV; 80Hz: 298nV
• Integrated RC oscillator (±8%), also supports external crystal or clock input
• Selectable output rate: 10Hz/80Hz
• Integrated 2-wire SPI interface
• Integrated temperature sensor
• INL less than 0.001%