ADS7138-Q1
Automotive, 8-channel, 140-kSPS, 12-bit analog-to-digital converter (ADC) with I2C, GPIOs and CRC
ADS7138-Q1
- 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
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.
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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | ADS7138-Q1 Small, 8-Channel, 12-Bit ADC With I2C Interface, GPIOs, and CRC datasheet (Rev. A) | 27 Oct 2020 | |
Functional safety information | ADS7138-Q1 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 09 Mar 2022 | |
Technical article | How an automotive ADC can help designers achieve functional safety in ADAS | PDF | HTML | 09 Jun 2020 | |
User guide | BP-ADS7128 BoosterPack™ Plug-In Module User's Guide | 21 May 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
BP-ADS7128 — ADS7128 8-channel 12-bit ADC BoosterPack™ plug-in module
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 (...)
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
Supported products & hardware
Products
Precision op amps (Vos<1mV)
General-purpose op amps
Audio op amps
Transimpedance amplifiers
High-speed op amps (GBW ≥ 50 MHz)
Power op amps
Video amplifiers
Line drivers
Transconductance amplifiers & laser drivers
Fully differential amplifiers
Precision ADCs
Biosensing AFEs
High-speed ADCs (≥10 MSPS)
Receivers
Touchscreen controllers
Difference amplifiers
Instrumentation amplifiers
Audio line receivers
Analog current-sense amplifiers
Digital power monitors
Analog current-sense amplifiers with integrated shunt resistor
Digital power monitors with integrated shunt resistor
Die & wafer services
SBAR008 — ADS7xx8 CRC Calculator
Supported products & hardware
Products
Precision ADCs
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
WQFN (RTE) | 16 | Ultra Librarian |
Ordering & quality
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- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
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