ADS7038 Small 8-channel 1-MSPS 12-bit analog-to-digital converter (ADC) with SPI interface, GPIOs and CRC | TI.com

ADS7038
This product is prototype/experimental and has not been released to the market. Testing and final processes may not be complete. This product may be subject to further changes or possible discontinuation
Small 8-channel 1-MSPS 12-bit analog-to-digital converter (ADC) with SPI interface, GPIOs and CRC

 

Sample availability

Preproduction samples are available (XADS7038IRTER). Order now

Description

The ADS7038 is an easy-to-use, 8-channel, multiplexed, 12-bit, 1-MSPS, 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 the ADC conversion process.

The ADS7038 communicates via an SPI-compatible interface and operates in either autonomous or single-shot conversion mode. The ADS7038 implements the 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 ADS7038 has a built-in cyclic redundancy check (CRC) for data read/write operations and the power-up configuration.

Features

  • Small package size:
    • WQFN 3 mm × 3 mm
  • 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:
    • AVDD: 2.35 V to 5.5 V
    • DVDD: 1.65 V to 5.5 V
    • –40°C to +125°C temperature range
  • Enhanced-SPI digital interface:
    • High-speed, 60-MHz interface
    • Achieve full throughput with >13.5-MHz SPI
  • CRC for read/write operation:
    • CRC on data read/write
    • CRC on power-up configuration
  • Programmable averaging filters:
    • Programmable sample size for averaging
    • Averaging with internal conversions
    • 16-bit resolution

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Parametrics

Compare all products in Precision ADCs (<=10MSPS) Email Download to Excel
Part number Order Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) INL (Max) (+/-LSB) SNR (dB) THD (Typ) (dB) Rating
ADS7038 Order now 12     1000     8     Enhanced SPI     -40 to 125     WQFN | 16     3.00 | 1ku       16WQFN: 9 mm2: 3 x 3 (WQFN | 16)     SAR     Single-Ended     Multiplexed     Supply     Digital Window Comparator
GPIO
Oscillator
Small Size    
5.5     0     2.35     5.5     1.65     5.5     2     69       Catalog    
ADS7028 Order now 12     1000     8     Enhanced SPI     -40 to 85     WQFN | 16     2.70 | 1ku       16WQFN: 9 mm2: 3 x 3 (WQFN | 16)     SAR     Single-Ended     Multiplexed     Supply     Digital Window Comparator
GPIO
Oscillator
Small Size    
5.5     0     2.35     5.5     1.65     5.5     2     69       Catalog    
ADS7142 Order now 12     140     2     I2C     -40 to 125     X2QFN | 10     0.85 | 1ku     0.0009     10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)     SAR     Pseudo-Differential
Single-Ended    
Multiplexed     Supply     Comparator
Oscillator
Small Size    
3.6     0     1.65     3.6     1.65     3.6     1     71.5     -80     Catalog    
ADS7828 Order now 12     50     8     I2C     -40 to 85     TSSOP | 16     3.58 | 1ku     0.675