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Product Detailed Parameters
- Description：IC ADC 24BIT SIGMA-DELTA 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Number of Bits：24
- Sampling Rate (Per Second)：40k
- Number of Inputs：1
- Input Type：Differential
- Data Interface：SPI
- Configuration：ADC
- Ratio - S/H:ADC：-
- Number of A/D Converters：1
- Architecture：Sigma-Delta
- Reference Type：External
- Voltage - Supply, Analog：5V
- Voltage - Supply, Digital：5V
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The ADS1252U/2K5G4 is a single-channel, 24-bit analog-to-digital converter (ADC) utilizing sigma-delta architecture. It operates with differential inputs and supports an SPI interface for data communication. The device provides a sampling rate of up to 40 kSPS and functions within an analog and digital supply voltage range of 4.75 V to 5.25 V. Key performance metrics include a differential nonlinearity (DNL) of +/- 1 LSB and integral nonlinearity (INL) of +/- 0.0015% FSR. It features integrated programmable gain amplifier (PGA) capabilities and offers 50/60 Hz rejection. The component is housed in an 8-pin SOIC package and operates across a temperature range of -40°C to +85°C.
Feature Summary
- Integrated programmable gain amplifier (PGA) allows direct signal conditioning without external components.
- Sigma-delta architecture ensures high resolution and effective rejection of power line interference frequencies.
- Low power consumption design enables operation in battery-powered or energy-constrained applications.
Applications
- Direct thermocouple interface systems
- Industrial process control monitoring
- Weighing scales and load cell measurements
Procurement Notes
Verify the specific ordering suffix against manufacturer documentation to confirm packaging configuration. The 'G4' designation typically indicates lead-free status and RoHS compliance, while '/2K5' denotes reel packaging quantities. Ensure compatibility with existing board layouts regarding the SOIC-8 footprint and thermal requirements during procurement planning.
Selection Notes
Select this component when high-resolution measurement of low-level differential signals is required. It is suitable for applications needing built-in filtering and amplification. Compare against the ADS1251 if lower sampling rates are acceptable, or the ADS1253 for multi-channel requirements. Verify that the external reference voltage matches the input range specifications.
Part Context
This part belongs to the Texas Instruments ResolutionPlus family of precision ADCs. It shares architectural similarities with the ADS1251 and ADS1253 but is optimized for single-channel applications. The series is designed for industrial environments requiring robust noise immunity and precise data acquisition capabilities.
Replacement Considerations
The ADS1251U/2K5 serves as a functional substitute with a reduced sampling rate of 20 kSPS. The ADS1253U/2K5 offers additional channels while maintaining similar performance characteristics. Verify pinout compatibility and software register configurations before implementing any cross-model replacements.
