12-Bit 1MSPS Ultra-Low-Power Ultra-Small-Size SAR ADC With SPI Interface
Product details
Parameters
Package | Pins | Size
Features
- Industry’s First SAR ADC with Nanowatt Power Consumption:
- 234 µW at 1 MSPS with 1.8-V AVDD
- 690 µW at 1 MSPS with 3-V AVDD
- 69 µW at 100 kSPS with 3-V AVDD
- Less than 1 µW at 1 kSPS with 3-V AVDD
- Industry’s Smallest SAR ADC:
- X2QFN-8 Package with 2.25-mm2 Footprint
- 1-MSPS Throughput with Zero Data Latency
- Wide Operating Range:
- AVDD: 1.65 V to 3.6 V
- DVDD: 1.65 V to 3.6 V (Independent of AVDD)
- Temperature Range: –40°C to 125°C
- Excellent Performance:
- 12-Bit Resolution with NMC
- ±1-LSB (Max) DNL and INL
- 70-dB SNR with 3-V AVDD
- –80-dB THD with 3-V AVDD
- Unipolar Input Range: 0 V to AVDD
- Integrated Offset Calibration
- SPI™-Compatible Serial Interface: 16 MHz
- JESD8-7A Compliant Digital I/O
Description
The ADS7042 is a 12-bit, 1-MSPS, analog-to-digital converter (ADC). The device supports a wide analog input voltage range (1.65 V to 3.6 V) and includes a capacitor-based, successive-approximation register (SAR) ADC with an inherent sample-and-hold circuit. The SPI-compatible serial interface is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interface to a variety of host controllers. The ADS7042 complies with the JESD8-7A standard for normal DVDD range (1.65 V to 1.95 V).
The ADS7042 is available in 8-pin, miniature, leaded, and X2QFN packages and is specified for operation from –40°C to 125°C. Miniature form-factor and extremely low-power consumption make this device suitable for space-constrained, battery-powered applications.
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 ADS7042EVM-PDK is a platform for evaluation of the ADS7042 analog to Digital converter (ADC). The converter is an 12 bit single-ended Successive Approximation-Register (SAR) ADC with a maximum throughput of 1MSPS. The evaluation kit combines the ADS7042EVM board with a serial data capture card (...)
Features
- Contains support circuitry as a design example to match ADC performance
- 3.3-V slave serial peripheral interface (SPI)
- Onboard 5-V analog supply
- Onboard OPA835 (56-MHz bandwidth, Rail-to-Rail Out) ADC input drivers
- USB port for computer interface
Description
The ADS7042 Ultra-Low Power Data Acquisition BoosterPack is a stand-alone system that converts analog sensor data into digital SPI data using the TI ADS7042 Successive Approximation Register Analog-to-Digital Converter. This BoosterPack has been designed to be compatible with the TI (...)
Features
- Designed using the ADS7042 precision analog-to-digital converter, OPA316 precision ADC driver, and REF3330 precision voltage reference
- Nanowatt power consumption of the ADS7042 ADC when sampling at 1 KSPS
- ADC sampling rates betwen 1 KSPS and 1 MSPS
- SMA jack for optional external analog signal input
- (...)
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
Design files
-
download TIPD197 BOM.pdf (193KB)
(...)
Design files
-
download TIPD168 BOM.pdf (93KB) -
download TIPD168 Gerber.zip (3361KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| VSSOP (DCU) | 8 | View options |
| X2QFN (RUG) | 8 | 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
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.