ADS1222IPWR
Active24-BIT ADC WITH 2-CHANNEL DIFFERENTIAL INPUT MULTIPLEXER
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ADS1222IPWR
Active24-BIT ADC WITH 2-CHANNEL DIFFERENTIAL INPUT MULTIPLEXER
Technical Specifications
Parameters and characteristics for this part
| Specification | ADS1222IPWR |
|---|---|
| Architecture | Sigma-Delta |
| Configuration | MUX-ADC |
| Data Interface | SPI |
| Features | Temperature Sensor |
| Input Type | Single Ended, Differential |
| Mounting Type | Surface Mount |
| Number of A/D Converters | 1 |
| Number of Bits | 24 |
| Number of Inputs | 2 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 14-TSSOP |
| Package / Case [custom] | 0.173 " |
| Package / Case [custom] | 4.4 mm |
| Reference Type | External |
| Sampling Rate (Per Second) | 240 Per Second |
| Supplier Device Package | 14-TSSOP |
| Voltage - Supply, Analog [Max] | 5.5 V |
| Voltage - Supply, Analog [Min] | 2.7 V |
| Voltage - Supply, Digital [Max] | 5.5 V |
| Voltage - Supply, Digital [Min] | 2.7 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 9.92 | |
| 10 | $ 8.96 | |||
| 25 | $ 8.54 | |||
| 100 | $ 7.42 | |||
| 250 | $ 7.08 | |||
| 500 | $ 6.46 | |||
| 1000 | $ 5.62 | |||
| Digi-Reel® | 1 | $ 9.92 | ||
| 10 | $ 8.96 | |||
| 25 | $ 8.54 | |||
| 100 | $ 7.42 | |||
| 250 | $ 7.08 | |||
| 500 | $ 6.46 | |||
| 1000 | $ 5.62 | |||
| Tape & Reel (TR) | 2000 | $ 5.42 | ||
| Texas Instruments | LARGE T&R | 1 | $ 7.59 | |
| 100 | $ 6.19 | |||
| 250 | $ 4.86 | |||
| 1000 | $ 4.13 | |||
Description
General part information
ADS1222 Series
The ADS1222 is a 2-channel, 24-bit, delta-sigma analog-to-digital (A/D) converter. It offers excellent performance and low power in a TSSOP-14 package. The ADS1222 is well-suited for demanding, high-resolution measurements, especially in portable systems and other space-saving and power-constrained applications.
A delta-sigma (ΔΣ) modulator and digital filter form the basis of the A/D converter. The analog modulator has a ±5V differential input range. An input multiplexer (mux) is used to select between two separate differential input channels. A buffer can be selected to increase the input impedance of the measurement.
A simple, 2-wire serial interface provides all the necessary control. Data retrieval, self-calibration, and Standby mode are handled with a few simple waveforms. When only single conversions are needed, the ADS1222 can be quickly shut down (Standby mode) while idle between measurements to dramatically reduce the overall power consumption. Multiple ADS1222s can be connected together to create a synchronously sampling multichannel measurement system. The ADS1222 is designed to easily connect to microcontrollers, such as the MSP430.
Documents
Technical documentation and resources
