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Product Detailed Parameters
- Description：IC ADC 24BIT SIGMA-DELTA 28SSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：24
- Sampling Rate (Per Second)：30k
- Number of Inputs：4, 8
- Input Type：Differential, Single Ended
- Data Interface：SPI
- Configuration：MUX-PGA-ADC
- Ratio - S/H:ADC：-
- Number of A/D Converters：1
- Architecture：Sigma-Delta
- Reference Type：External
- Voltage - Supply, Analog：5V
- Voltage - Supply, Digital：1.8V ~ 3.6V
- Features：PGA
- Operating Temperature：-40°C ~ 85°C
- Package / Case：28-SSOP (0.209", 5.30mm Width)
- Supplier Device Package：28-SSOP
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The ADS1256IDBT is a 24-bit analog-to-digital converter (ADC) from Texas Instruments, utilizing sigma-delta architecture. It features an integrated multiplexer and programmable gain amplifier (PGA), supporting up to eight differential or sixteen single-ended input channels. The device operates with a maximum sampling rate of 30 kSPS and communicates via a standard SPI interface. It requires separate analog power supplies ranging from 4.75 V to 5.25 V and digital supplies between 1.8 V and 3.6 V. Housed in a 20-lead SSOP package, it functions within a temperature range of -40°C to +85°C.
Feature Summary
- Integrated multiplexer allows flexible configuration for multiple differential or single-ended inputs.
- Programmable gain amplifier enables signal conditioning directly at the input stage.
- Sigma-delta architecture provides high resolution with inherent noise filtering capabilities.
Applications
- Industrial process control systems requiring high-resolution data acquisition
- Weigh scales and load cell measurement applications
- Temperature measurement systems using thermocouples or RTDs
Part Context
This component belongs to the ADS125x family of precision ADCs. It shares architectural similarities with the ADS1255 but offers increased channel count flexibility through its internal multiplexer. The IDBT suffix indicates a tape-and-reel packaging format suitable for automated surface-mount assembly processes.
Replacement Considerations
The ADS1255IDBR serves as a functional substitute for designs requiring fewer input channels. Designers must verify pin compatibility and software register configurations when transitioning between these variants within the same product family.
