Overview
The ADS7128IRTER is a highly versatile and feature-rich analog-to-digital converter (ADC) manufactured by Texas Instruments. This 8-channel, 12-bit ADC is designed for high-precision data acquisition and is particularly suited for applications requiring multi-channel analog input conversion. The device features a successive approximation register (SAR) architecture, ensuring accurate and reliable conversions. It also includes an I2C-compatible interface, internal oscillator, and various advanced modules such as a root-mean-square (RMS) module and a zero-crossing-detect (ZCD) module. These features make the ADS7128IRTER an ideal choice for industrial automation, data acquisition systems, and instrumentation.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | ADS7128IRTER |
| Number of Channels | 8 |
| Resolution | 12-bit |
| Interface | I2C |
| Min Supply Voltage | 1.65V |
| Max Supply Voltage | 5.5V |
| Case/Package | 16-WQFN |
| Min Operating Temperature | -40°C |
| Max Operating Temperature | 85°C |
| Number of Pins | 16 |
| Height | 800µm |
| Length | 3mm |
| Width | 3mm |
Key Features
- Successive Approximation Register (SAR) Architecture: Ensures accurate and reliable analog-to-digital conversions.
- I2C Interface: Allows for easy communication and configuration via an I2C-compatible interface.
- Internal Oscillator: Facilitates ADC conversion processes without the need for external oscillators.
- Root-Mean-Square (RMS) Module: Computes a 16-bit true RMS result for any analog input channel.
- Zero-Crossing-Detect (ZCD) Module: Allows for transient rejection and hysteresis near configurable threshold crossings.
- Analog Watchdog Function: Implements event-triggered interrupts per channel using a digital window comparator with programmable high and low thresholds, hysteresis, and an event counter.
- Cyclic Redundancy Check (CRC): Ensures data integrity during read/write operations and power-up configuration.
- Programmable Averaging Filters and Gain Settings: Provides flexibility in signal processing and noise reduction.
- GPIOs and Digital Inputs/Outputs: The eight channels can be independently configured as either analog inputs, digital inputs, or digital outputs.
Applications
- Industrial Automation: Suitable for monitoring and controlling various industrial processes.
- Data Acquisition Systems: Ideal for systems requiring multi-channel analog input conversion.
- Instrumentation: Used in precision measurement instruments and test equipment.
- Medical Devices: Can be used in medical devices that require accurate and reliable analog-to-digital conversions.
- Aerospace and Defense: Applicable in systems that demand high precision and reliability in data acquisition.
Q & A
- What is the ADS7128IRTER?
The ADS7128IRTER is an 8-channel, 12-bit analog-to-digital converter (ADC) manufactured by Texas Instruments, designed for high-precision data acquisition and multi-channel analog input conversion.
- How does the ADS7128IRTER work?
The ADS7128IRTER converts analog voltage signals from up to 8 input channels into digital data with 12-bit resolution using a successive approximation register (SAR) architecture. It operates via an I2C interface and can be configured in autonomous or single-shot conversion modes.
- What is the package type of the ADS7128IRTER?
The ADS7128IRTER is packaged in a 16-pin WQFN (Quad Flat No-Lead) package.
- What are the key features of the RMS module in the ADS7128IRTER?
The RMS module computes a 16-bit true RMS result for any analog input channel and includes programmable RMS time window settings.
- How does the zero-crossing-detect (ZCD) module work?
The ZCD module allows for transient rejection and hysteresis near configurable threshold crossings, providing a ZCD output corresponding to any analog input.
- What is the purpose of the cyclic redundancy check (CRC) in the ADS7128IRTER?
The CRC ensures data integrity during read/write operations and power-up configuration.
- Can the channels of the ADS7128IRTER be configured independently?
Yes, the eight channels can be independently configured as either analog inputs, digital inputs, or digital outputs.
- What is the operating temperature range of the ADS7128IRTER?
The operating temperature range is from -40°C to 85°C.
- What are some common applications of the ADS7128IRTER?
Common applications include industrial automation, data acquisition systems, instrumentation, and medical devices.
- Does the ADS7128IRTER have built-in analog watchdog functionality?
Yes, the ADS7128IRTER implements an 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.
