24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC w/ PGA, VREF, 2x IDACs & UART interface
Product details
Parameters
Package | Pins | Size
Features
- Current Consumption as Low as 315 µA (typ)
- Wide Supply Range: 2.3 V to 5.5 V
- Programmable Gain: 1 to 128
- 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 - Three General-Purpose Inputs/Outputs
- 2-Wire UART Compatible Interface (8-N-1 Format) With Baud Rates up to 120 kBaud and
Auto-Baud-Rate Detection - Package: 3.0-mm × 3.0-mm × 0.75-mm WQFN
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Description
The ADS122U04 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, 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. This PGA makes the ADS122U04 ideally suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors.
The ADS122U04 features a 2-wire, UART-compatible interface. In applications that require galvanic isolation this universal asynchronous receiver/transmitter (UART) interface minimizes the number of digital isolation channels, thus saving cost, board space, and power.
The ADS122U04 is offered in a leadless 16-pin WQFN or a 16-pin TSSOP 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 ADS122U04 evaluation module (EVM) is a platform for evaluation of the ADS122U04 analog-to-digital converter (ADC). The ADS122U04 is a 24-bit, 2-kSPS, 4-channel, low-power delta-sigma ADC with a UART interface for sensor measurement and process control applications. The ADS122U04 also includes an (...)
Features
- Includes all required support circuitry for ADS122U04
- Delta-Sigma ADC EvaluaTIon Software (DELTASIGMAEVAL-GUI) enables quick configuration and analysis
- Configurable inputs, references, and supplies
- Easily accessible signals via test points and headers
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
Design files
-
download TIDA-01526 BOM.pdf (66KB) -
download TIDA-01526 Assembly Drawing.pdf (121KB) -
download TIDA-01526 PCB.pdf (511KB) -
download TIDA-01526 CAD Files.zip (618KB) -
download TIDA-01526 Gerber.zip (416KB)
Design files
-
download TIDA-010048 BOM.pdf (104KB) -
download TIDA-010048 Assembly Drawing.pdf (1348KB) -
download TIDA-010048 PCB.pdf (1366KB) -
download TIDA-010048 CAD Files.zip (3092KB) -
download TIDA-010048 Gerber.zip (1559KB)
Design files
-
download TIDA-010012 BOM Files.zip (174KB) -
download TIDA-010012 Assembly Files.zip (356KB) -
download TIDA-010012 Layer Plots.zip (1706KB) -
download TIDA-010012 CAD Files.zip (5258KB) -
download TIDA-010012 Gerber.zip (1059KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
TSSOP (PW) | 16 | View options |
WQFN (RTE) | 16 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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