Automotive, 8-channel, 140-kSPS, 12-bit analog-to-digital converter (ADC) with I2C, GPIOs and CRC
Product details
Parameters
Package | Pins | Size
Features
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Small package size:
- 3-mm × 3-mm WQFN
- Wettable flanks for visual inspection of solder joints
- 8 channels configurable as any combination of:
- Up to 8 analog inputs, digital inputs, or digital outputs
- GPIOs for I/O expansion:
- Open-drain, push-pull digital outputs
- Wide operating ranges:
- AVDD: 2.35 V to 5.5 V
- DVDD: 1.65 V to 5.5 V
- –40°C to +125°C temperature range
- CRC for read/write operations:
- CRC on data read/write
- CRC on power-up configuration
- I2C interface:
- Up to 3.4 MHz (high-speed mode)
- 8 configurable I2C addresses
- Programmable averaging filters:
- Programmable sample size for averaging
- Averaging with internal conversions
- 16-bit resolution for average output
- Turbo comparator mode with speeds up to 3.2 MSPS
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Description
The ADS7138-Q1 is an easy-to-use, 8-channel, multiplexed, 12-bit, successive approximation register analog-to-digital converter (SAR ADC). The eight channels can be independently configured as either analog inputs, digital inputs, or digital outputs. The device has an internal oscillator for ADC conversion processes.
The ADS7138-Q1 communicates via an I2C-compatible interface and operates in either autonomous or single-shot conversion mode. The ADS7138-Q1 implements analog watchdog function by event-triggered interrupts per channel using a digital window comparator with programmable high and low thresholds, hysteresis, and an event counter. The ADS7138-Q1 has a built-in cyclic redundancy check (CRC) for data read/write operations and the power-up configuration.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | ADS7138-Q1 Small, 8-Channel, 12-Bit ADC With I2C Interface, GPIOs, and CRC datasheet (Rev. A) | Oct. 27, 2020 |
Technical article | How an automotive ADC can help designers achieve functional safety in ADAS | Jun. 09, 2020 | |
User guide | BP-ADS7128 BoosterPack™ Plug-In Module User's Guide | May 21, 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The BP-ADS7128 BoosterPack™ plug-in module is a platform for evaluating the performance of the successive approximation register (SAR) analog-to-digital converter (ADC) ADS7128 device and family of devices, which are analog, nanopower, eight-input-channel devices with an I/O expander.
BP-ADS7128 is (...)
Features
- Hardware and software required for diagnostic testing, as well as accurate performance evaluation of ADS7128 SAR ADC
- USB powered; no external power supply required
- Pairs with MSP-EXP432E401Y LaunchPad™ development kit, providing a convenient communication interface over a USB for power delivery (...)
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
- (...)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
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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