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ADS7138-Q1

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Automotive, 8-channel, 140-kSPS, 12-bit analog-to-digital converter (ADC) with I2C, GPIOs and CRC

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Data sheet

ADS7138-Q1

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 12 Sample rate (max) (ksps) 140 Number of input channels 8 Interface type I2C Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Automotive TI functional safety category Functional Safety-Capable Reference mode Supply Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Comparator, Digital Window Comparator, GPIO, Oscillator, Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.05 Analog supply voltage (min) (V) 2.3 Analog supply voltage (max) (V) 5.5 SNR (dB) 69 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.5
Resolution (Bits) 12 Sample rate (max) (ksps) 140 Number of input channels 8 Interface type I2C Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Automotive TI functional safety category Functional Safety-Capable Reference mode Supply Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Comparator, Digital Window Comparator, GPIO, Oscillator, Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.05 Analog supply voltage (min) (V) 2.3 Analog supply voltage (max) (V) 5.5 SNR (dB) 69 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.5
WQFN (RTE) 16 9 mm² 3 x 3
  • 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
  • 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.

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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Top documentation Type Title Format options 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
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WQFN (RTE) 16 Ultra Librarian
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