ADS131A02 Texas Instruments Integrated Circuit (Quad Flat Packages) In Stock
The ADS131A02 is a 2-channel, 24-bit, 128 kSPS simultaneous-sampling delta-sigma ADC from Texas Instruments, offering high-resolution analog-to-digital conversion with simultaneous multi-channel acquisition in a QFP package. It delivers exceptional dynamic range for precision measurement applications. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat Packages
- Pin Count
- 32
- Lifecycle
- ACTIVE
- Datasheet
- ADS131A02 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2-channel simultaneous sampling at 24-bit resolution ensures phase-coherent multi-channel data acquisition without time skew
- 128 kSPS maximum sample rate enables high-bandwidth signal capture for power quality and industrial measurement applications
- Delta-sigma architecture provides high dynamic range and excellent noise performance for precision analog front-end designs
- Flexible SPI interface with daisy-chain capability allows multiple ADS131A02 devices to share a single serial bus
Applications
The ADS131A02 is designed for high-precision simultaneous multichannel data acquisition systems including power quality analyzers, energy metering, and industrial sensor interfaces where phase-accurate sampling across multiple channels is essential. Its 24-bit resolution and 128 kSPS sample rate make it ideal for vibration analysis, acoustic measurement, and protection relay systems in grid infrastructure. The device also finds use in medical instrumentation and scientific data acquisition equipment requiring low-noise, high-dynamic-range analog front ends.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ADS131A02:
Frequently Asked Questions
What is the resolution and maximum sample rate of the ADS131A02?
The ADS131A02 provides 24-bit resolution with a maximum sample rate of 128 kSPS (kilo-samples per second). The high resolution enables detection of small signal variations across a wide dynamic range, while the 128 kSPS rate supports measurement of signals with frequency content up to 64 kHz, covering most industrial and power measurement application requirements.
Does the ADS131A02 support simultaneous sampling on all channels?
Yes, the ADS131A02 features true simultaneous sampling across both of its two analog input channels. Both channels are sampled at exactly the same instant, eliminating inter-channel phase error that would otherwise occur with multiplexed ADC architectures. This makes the ADS131A02 particularly valuable in power metering, motor control, and impedance measurement applications where phase relationships between channels are critical.
What type of ADC architecture does the ADS131A02 use and what are the benefits?
The ADS131A02 uses a delta-sigma (ΔΣ) ADC architecture, which provides inherently high resolution, excellent linearity, and superior noise rejection compared to SAR or pipeline ADCs at comparable speeds. The oversampling and digital filtering in the delta-sigma architecture deliver high effective number of bits (ENOB) and strong rejection of out-of-band noise and interference, benefiting precision measurement applications.
What interface does the ADS131A02 use and can multiple devices be connected to one microcontroller?
The ADS131A02 uses a high-speed SPI (Serial Peripheral Interface) for digital communication with a host processor. Multiple ADS131A02 devices can be connected in a daisy-chain configuration, where each device passes data through to the next, allowing a single SPI bus to collect data from several ADC modules without requiring additional chip-select lines per device.
What are the main applications and alternative devices for the ADS131A02?
Primary applications include three-phase power quality monitoring, energy metering (both residential and commercial), industrial vibration and acoustic analysis, protection relays, and medical ECG/EEG amplifiers. The ADS131A04 is the four-channel sibling device in the same family for applications requiring more simultaneous channels, sharing the same architecture, resolution, and sample rate specifications.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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