Overview
The ADS131A02IPBSR, produced by Texas Instruments, is a 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) designed for high-performance applications. This device is part of the ADS131A02 and ADS131A04 family, which includes two- and four-channel, simultaneous-sampling ADCs. The ADS131A02IPBSR is particularly suited for energy monitoring, grid protection, and control applications due to its wide dynamic range and scalable data rates up to 128 kSPS.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 (ADS131A02), 4 (ADS131A04) |
| Resolution | 24 bits |
| Data Rates | Up to 128 kSPS |
| Single-Channel Accuracy | Better than 0.1% at 10,000:1 dynamic range |
| Effective Resolution | 20.6 bits at 8 kSPS |
| THD | –100 dB at 50 Hz and 60 Hz |
| Analog Power Supply | Using negative charge pump: 3.0 V to 3.45 V, Unipolar supply: 3.3 V to 5.5 V, Bipolar supply: ±2.5 V |
| Digital Power Supply | 1.65 V to 3.6 V |
| Internal Voltage Reference | Low-drift, 6 ppm/°C |
| Package | 32-pin TQFP |
| Operating Temperature Range | –40°C to +125°C |
Key Features
- Simultaneous-sampling differential inputs
- Integrated negative charge pump for absolute input voltages below ground
- Flexible analog power-supply operation
- Low-drift internal voltage reference
- ADC self-checks and cyclic redundancy check (CRC) with hamming code error correction on communications
- Multiple SPI data interface modes: asynchronous interrupt, synchronous master and slave
- Internal fault monitors
- Direct interface to resistor-divider network, current transformer, or Rogowski coil for voltage or current measurement
Applications
The ADS131A02IPBSR is ideal for various high-performance applications, including:
- Energy monitoring
- Grid protection and control
- Industrial automation
- Power quality monitoring
- Current and voltage measurement in high dynamic range environments
Q & A
- What is the resolution of the ADS131A02IPBSR?
The ADS131A02IPBSR has a resolution of 24 bits. - What are the data rates supported by the ADS131A02IPBSR?
The device supports data rates up to 128 kSPS. - What is the accuracy of the ADS131A02IPBSR at a 10,000:1 dynamic range?
The single-channel accuracy is better than 0.1% at a 10,000:1 dynamic range. - What types of power supplies can the ADS131A02IPBSR operate with?
The device can operate with a negative charge pump (3.0 V to 3.45 V), unipolar supply (3.3 V to 5.5 V), bipolar supply (±2.5 V), and digital supply (1.65 V to 3.6 V). - What is the operating temperature range of the ADS131A02IPBSR?
The operating temperature range is –40°C to +125°C. - How many channels does the ADS131A02IPBSR have?
The ADS131A02IPBSR has 2 channels, while the ADS131A04 has 4 channels. - What is the package type of the ADS131A02IPBSR?
The device is packaged in a 32-pin TQFP package. - Does the ADS131A02IPBSR support multiple SPI interface modes?
Yes, it supports asynchronous interrupt, synchronous master, and synchronous slave SPI interface modes. - What kind of error correction does the ADS131A02IPBSR have?
The device includes cyclic redundancy check (CRC) and hamming code error correction on communications. - Can the ADS131A02IPBSR be used for current and voltage measurements?
Yes, it can be directly interfaced to a resistor-divider network, current transformer, or Rogowski coil for current and voltage measurements.
