Packaging information
Package | Pins WQFN (RTE) | 16 |
Operating temperature range (°C) -40 to 125 |
Package qty | Carrier 3,000 | LARGE T&R |
Features for the ADS7038
- 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
Description for the ADS7038
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 through 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.