The CLM1220 is a precision 16-bit analog-to-digital converter (ADC) that integrates multiple features to reduce system costs and the number of components in small sensor signal measurement applications. This device is capable of performing conversions at sampling data rates of up to 2,000 times per second (SPS) and is stable within a single cycle. For industrial applications in noisy environments, the digital filter provides both 50Hz and 60Hz rejection at a sampling frequency of 20SPS. The internal PGA offers up to 128V/V gain. This PGA makes the CLM1220 ideal for small sensor signal measurement applications such as resistive temperature detectors (RTDS), thermocouples, thermistors, and resistive bridge sensors. Power consumption can be as low as 120µA when operating in duty cycle mode with PGA disabled. CLM1220 adopts a thin and small form factor (TSSOP) -16 package, directly Pin To Pin to replace similar international products, without the need to change the circuit board or system software, achieving full compatibility replacement. Chiplon Microelectronics has developed its own testing plan to ensure that the factory products meet or even exceed the original specifications, with a rated operating temperature range of -40 ° C to+125 ° C.

Low current: as low as 120 μ A (typical value) in duty cycle mode

Wide power supply voltage range: 2.3V to 5.5V

Programmable gain: 1V/V to 128V/V

Programmable data rate: up to 2kSPS

Up to 20 bit effective resolution

Using a single period stable digital filter to achieve 50Hz and 60Hz harmonic suppression at 20SPS

Two differential inputs or four single ended inputs

Dual matching programmable current source: 50 μ A to 1.5mA

Integrated 2.048V reference voltage: drift 5ppm/° C (typical value)

Integrated 2% precision oscillator

Integrated temperature sensor: accuracy of 0.5 ° C (typical value)

SPI compatible interface (Mode 1)

Temperature sensor measurement:

1. Thermistor

2. Thermocouple

3. Resistance temperature detector (RTD) : 2 wire, 3 wire or 4 wire type

Resistance bridge sensor measurement:

1. Pressure sensor

2. Stress meter

3. Weighing instrument

Portable instrument

Factory automation and process control