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CJMCU-1220 ADS1220 ADC I2C Low Power 24 Bit AD Converter Sensor Module
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CJMCU-1220 ADS1220 ADC I2C Low Power 24 Bit AD Converter Sensor Module

- China

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Main Features

•Low Current Consumption: As Low as 120 μA (typ) in Duty-Cycle Mode
•Wide Supply Range: 2.3 V to 5.5 V
•Programmable Gain: 1 V/V to 128 V/V
•Programmable Data Rates: Up to 2 kSPS
•Up to 20-Bits Effective Resolution
•Simultaneous 50-Hz and 60-Hz Rejection at 20 SPS with Single-Cycle Settling Digital Filter
•Two Differential or Four Single-Ended Inputs
•Dual Matched Programmable Current Sources: 10 μA to 1.5 mA
•Internal 2.048-V Reference: 5 ppm/°C (typ) Drift
•Internal 2% Accurate Oscillator
•Internal Temperature Sensor: 0.5°C (typ) Accuracy
•SPI-Compatible Interface (Mode 1)
•Package: 3.5-mm × 3.5-mm × 0.9-mm VQFN
•Temperature Sensor Measurements:
–Resistance Temperature Detectors (RTDs): 2-, 3-, or 4-Wire Types
•Resistive Bridge Sensor Measurements:
–Pressure Sensors
–Strain Gauges
–Weigh Scales
•Portable Instrumentation
•Factory Automation and Process Control
The ADS1220 is a precision, 24-bit, analog-to-digital converter (ADC) that offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. 
The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, a low-side switch, and a precision temperature sensor.
The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20 SPS, the digital filter offers simultaneous 50-Hz and 60-Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128 V/V. This PGA makes the ADS1220 ideally-suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors. The device supports measurements of pseudo- or fully-differential signals when using the PGA. Alternatively, the device can be configured to bypass the internal PGA while still providing high input impedance and gains up to 4 V/V, allowing for single-ended measurements. 
Power consumption is as low as 120 µA when operating in duty-cycle mode with the PGA disabled. The ADS1220 is offered in a leadless VQFN-16 or a TSSOP-16 package and is specified over a temperature range of –40°C to +125°C.

Package includes:

1 x CJMCU-1220


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