ADS7138-Q1

• AEC-Q100 qualified for automotive applications:
  • Temperature grade 1: –40°C to +125°C, T_A
• 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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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.