Texas Instruments ADS7138/ADS7138-Q1 12-Bit ADCs
Texas Instruments ADS7138/ADS7138-Q1 12-Bit Analog-to-Digital Converter 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 Texas Instruments ADS7138/ADS7138-Q1 communicates via an I2C-compatible interface and operates in autonomous or single-shot conversion mode. The ADS7138/ADS7138-Q1 implements an 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/ADS7138-Q1 has a built-in cyclic redundancy check (CRC) for data read/write operations and the power-up configuration. The Texas Instruments ADS7138-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Small package size
- 3mm × 3mm WQFN
- 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
- Analog watchdog
- Programmable thresholds per channel
- Event counter for transient rejection
- Wide operating ranges
- 2.35V to 5.5V AVDD
- 1.65V to 5.5V DVDD
- –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 3.4MHz (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
Applications
- Automotive center information displays
- Mobile robot CPU boards
- Rack servers
- Intra-DC interconnect (metro)
Datasheets
Functional Block Diagram
Publicado: 2020-07-01
| Actualizado: 2024-06-27