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Product Detailed Parameters
- Description：IC ADC 24BIT SIGMA-DELTA 64HTQFP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Bits：24
- Sampling Rate (Per Second)：144k
- Number of Inputs：8
- 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：1.65V ~ 1.95V
- Features：-
- Operating Temperature：-40°C ~ 105°C
- Package / Case：64-PowerTQFP
- Supplier Device Package：64-HTQFP (10x10)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The ADS1278IPAPR is an octal, simultaneous-sampling, 24-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a sigma-delta architecture with eight independent channels supporting single-ended or differential inputs. The device operates with an analog supply voltage range of 4.75 V to 5.25 V and a digital supply voltage range of 1.65 V to 2.2 V. Key electrical specifications include a maximum sampling rate of 144 kSPS, a signal-to-noise ratio (SNR) of 111 dB, and a power dissipation of 530 mW. It utilizes an SPI interface and is housed in a 64-pin HTQFP package.
Feature Summary
- Simultaneous sampling across all eight input channels for precise multi-channel synchronization
- Integrated linear-phase finite impulse response (FIR) digital filters for high-resolution data processing
- Daisy-chainable serial interface capability to simplify readback in multi-device systems
Applications
- Vibration analysis and structural health monitoring
- Medical monitoring equipment requiring high channel count
- Acoustic and dynamic strain measurement systems
- Industrial process control and pressure measurement devices
Procurement Notes
Verify the specific suffix IPAPR against the manufacturer's current datasheet to confirm the tape-and-reel packaging configuration. Ensure the ordering part number matches the required operating temperature range and pinout compatibility before finalizing procurement orders.
Selection Notes
Select this component when simultaneous sampling of multiple signals is critical. Compare the 111 dB SNR and 144 kSPS throughput against system bandwidth requirements. Verify that the external reference voltage and clock source meet the specified noise and stability criteria for optimal performance.
Part Context
This part belongs to the ADS127x family of industrial-grade ADCs. It shares architectural similarities with the ADS1274 but provides eight channels instead of four. The IPAPR designation indicates the surface-mount HTQFP-64 package variant intended for high-volume manufacturing applications.
Replacement Considerations
The ADS1278IPAPT is a direct functional substitute differing only in packaging format. For lower channel counts, the ADS1274 series serves as a compatible alternative. Verify pin compatibility and software register settings when migrating between these variants.
