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Product Detailed Parameters
- Description：IC ADC 24BIT SIGMA-DELTA 20TSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Number of Bits：24
- Sampling Rate (Per Second)：15
- Number of Inputs：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：2.7V ~ 3.3V, 5V
- Voltage - Supply, Digital：2.7V ~ 5.25V
- Features：PGA
- Operating Temperature：-40°C ~ 85°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 ADS1243IPWRG4 is a 24-bit, ultra-low noise analog-to-digital converter (ADC) from Texas Instruments. It features four differential input channels and utilizes a sigma-delta architecture. The device operates on a single supply voltage ranging from 2.7 V to 5.25 V for both analog and digital domains. It supports data rates up to 15 samples per second and communicates via a 3-wire SPI interface. Key electrical specifications include a maximum differential nonlinearity of +/- 1 LSB and an integral nonlinearity of +/- 0.0015% FSR. The component is housed in a TSSOP-20 package and functions within a temperature range of -40°C to +85°C.
Feature Summary
- Integrated programmable gain amplifier with selectable gains for signal conditioning
- Built-in internal reference and oscillator options reducing external component count
- Programmable low-pass filter with 50 Hz and 60 Hz rejection capabilities
- General-purpose input/output pins for system control flexibility
Applications
- Industrial process control systems requiring high precision
- Weigh scales and load cell measurements
- Medical equipment such as ECG and blood pressure monitors
- Portable instrumentation devices
Procurement Notes
Verify the specific suffix G4 indicates RoHS compliance and green material status when sourcing. Confirm the IPWR package designation matches the required TSSOP-20 footprint for PCB layout. Ensure the operating voltage range aligns with the system's power supply rails. Check for any specific tape and reel requirements if automated assembly is planned. Validate that the 15 S/s data rate meets the application's throughput needs.
Selection Notes
Select this component when high resolution and low noise are critical for small signal applications. Consider the integrated PGA if signal amplification is needed before conversion. Evaluate the power consumption against battery life requirements for portable designs. Compare the 15 S/s speed against higher-speed alternatives if faster sampling is necessary. Ensure the SPI interface compatibility with the host microcontroller.
Part Context
This part belongs to the ADS124x family of precision ADCs designed for low-frequency measurement applications. It shares architectural similarities with the ADS1240 and ADS1241 but offers four differential channels. The IPWRG4 variant specifically denotes the surface-mount TSSOP-20 package with enhanced environmental compliance. It serves as a direct replacement for older generations in industrial sensing designs.
Replacement Considerations
- ADS1243IPW
- ADS1243IDR
FAQ
What is the maximum data rate of the ADS1243IPWRG4?
The maximum data rate is 15 samples per second.
Does the ADS1243IPWRG4 have an internal reference?
Yes, it includes an internal reference and oscillator to minimize external components.
What is the input type for this ADC?
The ADS1243IPWRG4 supports differential inputs across its four channels.
