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Product Detailed Parameters
- Description：IC ADC 24BIT SIGMA-DELTA 20TSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Number of Bits：24
- Sampling Rate (Per Second)：2k
- Number of Inputs：2, 3
- 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, Internal
- Voltage - Supply, Analog：2.7V ~ 5.25V
- Voltage - Supply, Digital：2.7V ~ 5.25V
- Features：PGA, Temperature Sensor
- Operating Temperature：-40°C ~ 105°C
- Package / Case：20-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：20-TSSOP
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The ADS1247IPW is a 24-bit, low-noise precision analog-to-digital converter (ADC) from Texas Instruments, housed in a 20-pin TSSOP package. It features a sigma-delta architecture with four differential input channels and an SPI interface. The device supports data rates up to 2 kSPS with single-cycle settling when using the internal multiplexer. It operates on analog and digital supply voltages ranging from 2.7 V to 5.25 V, with a typical power consumption of 2.3 mW. The component includes a programmable gain amplifier (PGA), internal temperature sensor, and GPIOs, functioning within a temperature range of -40°C to +105°C.
Feature Summary
- Integrated four-channel analog multiplexer supporting differential inputs with sensor burnout detection and system monitoring capabilities.
- Built-in dual matched programmable current sources for excitation and low-drift internal voltage reference for simplified sensor interfacing.
- Sigma-delta modulation with adjustable digital filter providing simultaneous 50 Hz and 60 Hz line frequency rejection at lower data rates.
Applications
- RTD, thermocouple, and thermistor temperature measurement systems
- High-precision pressure measurement transducers
- Industrial flow metering applications
Procurement Notes
Verify the specific ordering suffix against the manufacturer datasheet to confirm package type and tape/reel specifications. Ensure compatibility with RoHS3 standards and check moisture sensitivity levels for proper storage and handling procedures during assembly.
Selection Notes
Select this component for applications requiring high resolution and multiple differential inputs without external multiplexers. Compare channel count and current source availability against ADS1246 and ADS1248 variants to match specific sensor interface requirements and pin count constraints.
Part Context
This part belongs to the ADS124x family of 24-bit ADCs designed for sensor measurements. It shares architectural similarities with ADS1246 and ADS1248 but offers a specific combination of four channels and integrated features suitable for balanced performance in industrial sensing environments.
Replacement Considerations
ADS1246IPW: Fewer input channels (two differential). ADS1248IPW: More input channels (eight differential). Verify pin compatibility and software register configuration differences when substituting within the ADS124x series.
