Overview
The ADS131A04IPBSR is a high-performance, 4-channel, simultaneous-sampling, 24-bit delta-sigma analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the ADS131A0x family and is designed for applications requiring high accuracy and dynamic range. The ADS131A04 features flexible power-supply options, including an internal negative charge pump, and supports various interface modes for versatile system integration.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of ADC Channels | 4 | |
| Maximum Sample Rate | 128 | kSPS |
| Resolution | 24-bit | |
| Effective Resolution at 8 kSPS | 20.6 bits | |
| Single-channel Accuracy | Better than 0.1% at 10,000:1 dynamic range | |
| THD at 50 Hz and 60 Hz | -100 dB | |
| Analog Supply Voltage (with negative charge pump) | 3.0 to 3.45 V | |
| Digital Supply Voltage | 1.65 to 3.6 V | |
| Operating Temperature Range | -40°C to +125°C | |
| Package Type | 32-pin TQFP |
Key Features
- Simultaneous sampling of up to 4 differential analog inputs
- Data rates up to 128 kSPS
- High performance with single-channel accuracy better than 0.1% at 10,000:1 dynamic range
- Integrated negative charge pump for absolute input voltages below ground
- Flexible analog power-supply operation: unipolar, bipolar, and negative charge pump modes
- Low-drift internal voltage reference: 6 ppm/°C
- ADC self-checks, cyclic redundancy check (CRC), and Hamming code error correction
- Multiple SPI data interface modes: asynchronous interrupt, synchronous master, and synchronous slave
- Out-of-range detect, data integrity watchdog timer, and communication done signal
Applications
- Electricity meters: commercial and residential
- Circuit breakers
- Battery test equipment
- Battery management systems
- Data acquisition systems
- Energy monitoring, grid protection, and control applications
Q & A
- What is the maximum sample rate of the ADS131A04?
The maximum sample rate of the ADS131A04 is up to 128 kSPS.
- How many ADC channels does the ADS131A04 have?
The ADS131A04 has 4 simultaneous-sampling ADC channels.
- What is the resolution of the ADS131A04?
The ADS131A04 has a 24-bit resolution.
- What is the effective resolution at 8 kSPS?
The effective resolution at 8 kSPS is 20.6 bits.
- What are the power supply options for the ADS131A04?
The ADS131A04 supports flexible power-supply options including unipolar, bipolar, and negative charge pump modes.
- What is the operating temperature range of the ADS131A04?
The operating temperature range is -40°C to +125°C.
- What package type is the ADS131A04 available in?
The ADS131A04 is available in a 32-pin TQFP package.
- Does the ADS131A04 have built-in error correction mechanisms?
Yes, the ADS131A04 includes cyclic redundancy check (CRC) and Hamming code error correction.
- What interface modes are supported by the ADS131A04?
The ADS131A04 supports asynchronous interrupt, synchronous master, and synchronous slave SPI interface modes.
- What are some typical applications of the ADS131A04?
Typical applications include electricity meters, circuit breakers, battery test equipment, battery management systems, and data acquisition systems.
