24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC w/ PGA, VREF, 2x IDACs & SPI interface
Product details
Parameters
Package | Pins | Size
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
Description
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.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The ADS1220EVM is an evaluation system for the ADS1220, a 24-bit, multi-channel, delta-sigma (ΔΣ) analog-to-digital converter (ADC). The EVM uses the ADS1220 along with minimal circuitry to demonstrate functionality for prototyping and part evaluation. The pins of the ADS1220 are (...)
Features
- Contains all support circuitry needed for the ADS1220
- +5V or +3.3V power-supply options for ADC
- Voltage reference options: external or on-board
- Easy-to-use evaluation software for Microsoft™ Windows XP and Windows 7
- Built-in analysis tools including scope, FFT, and histogram displays
- Data collection to (...)
Description
PLABS-SAR-EVM-PDK is an experimental platform used in conjunction with TI Precision Labs videos to gain a deeper understanding of successive approximation register (SAR) analog-to-digital converter (ADC) circuits. The evaluation module (EVM) platform contains two channels for common SAR (...)
Features
- Intuitive setup – PCB overlay shows the schematic
- No external power supply required
- Includes several coupon boards with different driving amplifier RC filters to facilitate experimentation
- Ships with PHI controller - provides convenient interface to EVM over USB 2.0 (or higher) for power delivery (...)
Software development
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Features
- Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Noise calculations
- Common unit translation
- Solves common amplifier circuit design problems
- Gain selections using standard resistors
- Filter configurations
- Total noise for common amplifier configurations
- (...)
Reference designs
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| TSSOP (PW) | 16 | View options |
| VQFN (RVA) | 16 | View options |
Ordering & quality
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.