Overview
The ADS7038IRTER, produced by Texas Instruments, is an 8-channel, 12-bit analog-to-digital converter (ADC) that features a successive approximation register (SAR) architecture. This device is designed for high flexibility and ease of use, with eight channels that can be independently configured as either analog inputs, digital inputs, or digital outputs. It operates through an SPI-compatible interface and supports both autonomous and single-shot conversion modes. The ADS7038IRTER includes an internal oscillator for the ADC conversion process and offers a range of advanced features such as programmable averaging filters, analog watchdog functions, and cyclic redundancy check (CRC) for data integrity.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Resolution | Number of bits | 12-bit |
| Sample Rate | Maximum sampling frequency | 1 MSPS (ADS7038), 1.5 MSPS (ADS7038H) |
| Channels | Number of configurable channels | Up to 8 (analog inputs, digital inputs, or digital outputs) |
| Package | Package type and size | WQFN 3mm × 3mm, 16 pins |
| Operating Voltage | Analog and digital supply voltage ranges | AVDD: 2.35V to 5.5V, DVDD: 1.65V to 5.5V |
| Temperature Range | Operating temperature range | –40°C to +125°C |
| SPI Interface | Maximum SCLK frequency | 60 MHz |
| CRC | Cyclic redundancy check for data integrity | CRC on data read/write and power-up configuration |
| Analog Watchdog | Programmable thresholds and event counter | Programmable high and low thresholds, hysteresis, and event counter |
Key Features
- Configurable Channels: Up to 8 channels can be configured as analog inputs, digital inputs, or digital outputs.
- GPIOs: General Purpose Input/Output pins for I/O expansion with open-drain and push-pull digital outputs.
- Analog Watchdog: Programmable thresholds per channel, event counter for transient rejection, and digital window comparator with hysteresis.
- Programmable Averaging Filters: Programmable sample size for averaging and averaging with internal conversions, supporting up to 16-bit resolution.
- Enhanced-SPI Interface: High-speed, 60MHz interface capable of achieving full throughput with >13.5MHz SPI.
- CRC for Data Integrity: Built-in cyclic redundancy check for data read/write operations and power-up configuration.
- Wide Operating Ranges: Operates over a wide temperature range of –40°C to +125°C and supports various supply voltages (AVDD: 2.35V to 5.5V, DVDD: 1.65V to 5.5V).
Applications
- Macro Remote Radio Units (RRU): Suitable for wireless communication systems.
- Battery Management Systems (BMS): Used in monitoring and controlling battery health.
- String Inverters and Central Inverters: Applied in solar energy systems for efficient power conversion.
Q & A
- What is the resolution of the ADS7038IRTER ADC?
The ADS7038IRTER has a 12-bit resolution.
- How many channels does the ADS7038IRTER support?
The device supports up to 8 configurable channels.
- What is the maximum sampling rate of the ADS7038IRTER?
The maximum sampling rate is 1 MSPS for the ADS7038 and 1.5 MSPS for the ADS7038H.
- What type of interface does the ADS7038IRTER use?
The device communicates through an SPI-compatible interface.
- Does the ADS7038IRTER have built-in data integrity features?
Yes, it includes a cyclic redundancy check (CRC) for data read/write operations and power-up configuration.
- What is the operating temperature range of the ADS7038IRTER?
The device operates over a temperature range of –40°C to +125°C.
- Can the channels of the ADS7038IRTER be configured differently?
Yes, the channels can be independently configured as analog inputs, digital inputs, or digital outputs.
- What is the purpose of the analog watchdog feature in the ADS7038IRTER?
The analog watchdog feature provides programmable thresholds per channel, an event counter for transient rejection, and a digital window comparator with hysteresis.
- Does the ADS7038IRTER support programmable averaging filters?
Yes, it supports programmable sample size for averaging and averaging with internal conversions, up to 16-bit resolution.
- What is the package size of the ADS7038IRTER?
The device comes in a WQFN package with dimensions of 3mm × 3mm.
