TLV2544IDR Equivalent & Substitute Parts

Part Overview

The TLV2544IDR is a 12-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for data acquisition applications requiring 4-channel single-ended input conversion. This device features a Successive Approximation Register (SAR) architecture with a 200 kSPS sampling rate and operates across a 2.7V to 5.5V supply voltage range. The TLV2544IDR is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

TLV2544IDR

Texas InstrumentsIn Stock: 3759TLV2544IDR Datasheet

Current PartRFQ

ADC124S021CIMMX/NOPB

Texas InstrumentsIn Stock: 1792ADC124S021CIMMX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV2544IDR is determined by strict equivalence across the following critical parameters:

• Resolution: 12-bit conversion capability
• Channel Count: 4 independent input channels
• Input Configuration: Single-ended input architecture
• Sampling Rate: 200 kSPS minimum performance
• Communication Protocol: SPI and DSP interface support
• Converter Architecture: SAR-based conversion
• Supply Voltage Range: Compatibility within 2.7V to 5.5V operating window
• Operating Temperature Range: -40°C to 85°C
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The ADC124S021CIMMX/NOPB qualifies as a functional substitute based on matching all critical electrical parameters. Package differences (16-SOIC versus 10-VSSOP) and reference type variations (External/Internal versus Supply) represent the primary distinctions requiring design consideration.

Parameter Comparison

Engineering Selection Recommendations

The ADC124S021CIMMX/NOPB is an active production substitute for the discontinued TLV2544IDR. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and legacy system updates.

The primary design consideration is package footprint transition from 16-SOIC to 10-VSSOP, which requires PCB layout modification. The reduced package size of the ADC124S021CIMMX/NOPB offers space efficiency benefits in compact applications.

Supply voltage range narrowing from 5.5V to 5.25V maximum on the substitute part requires verification against system power supply specifications. Applications operating at or near 5.5V nominal supply must confirm compatibility with the 5.25V upper limit of the ADC124S021CIMMX/NOPB.

Reference voltage architecture differs between parts: the TLV2544IDR supports both external and internal reference configurations, while the ADC124S021CIMMX/NOPB utilizes supply-based referencing. Circuit design modifications may be necessary to accommodate this functional difference.

Frequently Asked Questions (FAQ)

Q: Can the ADC124S021CIMMX/NOPB directly replace the TLV2544IDR without PCB modification?

A: Direct socket replacement is not possible due to package differences. The TLV2544IDR uses 16-SOIC packaging while the ADC124S021CIMMX/NOPB uses 10-VSSOP packaging. PCB layout redesign is required for substitution.

Q: What is the impact of the narrower supply voltage range on the substitute part?

A: The ADC124S021CIMMX/NOPB maximum supply voltage is 5.25V compared to 5.5V for the TLV2544IDR. Systems operating at 5.5V nominal supply must be re-evaluated. Most 5V systems operate within the 5.25V specification and are compatible.

Q: Are the SPI and DSP interface protocols identical between these parts?

A: Both devices support SPI and DSP communication protocols. Firmware and interface timing should be verified during design transition, though protocol compatibility is maintained.

Q: Does the reference voltage difference affect circuit design?

A: Yes. The TLV2544IDR supports external and internal reference options, while the ADC124S021CIMMX/NOPB uses supply-based referencing. Reference circuit design must be adapted accordingly.

Q: Is the ADC124S021CIMMX/NOPB suitable for new designs?

A: Yes. The ADC124S021CIMMX/NOPB maintains active production status and full regulatory compliance, making it the recommended choice for new designs requiring 12-bit, 4-channel SAR ADC functionality.