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Product Detailed Parameters
- Description：24BIT, 512KSPS WIDE-BANDWIDTH DE
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Number of Bits：24
- Sampling Rate (Per Second)：1.365M
- Number of Inputs：1, 2
- Input Type：Differential, Single Ended
- Data Interface：SPI
- Configuration：ADC
- Ratio - S/H:ADC：0:01
- Number of A/D Converters：1
- Architecture：Sigma-Delta
- Reference Type：External
- Voltage - Supply, Analog：2.85V ~ 5.5V
- Voltage - Supply, Digital：1.65V ~ 5.5V
- Features：Internal Oscillator, Programmable Filter
- Operating Temperature：-40°C ~ 125°C
- Package / Case：20-WFQFN Exposed Pad
- Supplier Device Package：20-WQFN (3x3)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The ADS127L21BIRUKT is a 24-bit delta-sigma analog-to-digital converter (ADC) from Texas Instruments, housed in a 20-pin WQFN package. It features buffered differential inputs and an SPI interface. The device supports a maximum sampling rate of 512 kSPS with a typical signal-to-noise ratio (SNR) of 110 dB and a spurious-free dynamic range (SFDR) of 125 dB. Digital supply voltage ranges from 1.65 V to 5.5 V. It operates within a temperature range of -40°C to +125°C and consumes approximately 32.8 mW of power dissipation.
Feature Summary
- 24-bit resolution with 512 kSPS sampling rate
- Buffered differential inputs for reduced driver load
- SPI interface with CRC verification
- Operating temperature range of -40°C to +125°C
Applications
- Test and measurement equipment
- Industrial process control systems
- Medical instrumentation
Procurement Notes
Verify the specific suffix 'B' against the official datasheet to confirm if it denotes a specific binning or quality grade, as standard part numbers may not explicitly detail this in general summaries. Ensure the WQFN-20 package dimensions match the PCB footprint requirements. Confirm humidity sensitivity handling procedures during storage and reflow soldering.
Selection Notes
Select this component when high DC precision and AC performance are required in a compact form factor. The buffered inputs simplify front-end amplifier design by reducing loading effects. Compare the 512 kSPS broadband filter mode against lower-speed modes if power consumption needs optimization. Verify that the 2 V reference voltage requirement aligns with available system references.
Part Context
This part belongs to the ADS127L21 family of high-performance, low-power ADCs. The 'IRU' indicates the 20-WQFN (3x3 mm) package type, while 'KT' specifies the tape and reel packaging configuration. The 'B' suffix typically indicates a specific manufacturing lot or binning code within Texas Instruments' product line.
Replacement Considerations
The ADS127L21IRUKT is a functionally similar alternative within the same family, differing primarily in the absence of the 'B' suffix which may relate to specific testing or binning criteria. Both share the same core specifications including 24-bit resolution and 512 kSPS speed.
