TLV2544IPW Equivalent & Substitute Parts

Part Overview

The TLV2544IPW 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 an integrated multiplexer and sample-and-hold circuit, operating at a 200 kSPS sampling rate. The TLV2544IPW is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent substitute parts is essential for design continuity, long-term supply chain planning, and new product development where active alternatives are preferred.

Key Parameters

Parameter	Value
Resolution	12 Bits
Number of Input Channels	4
Input Type	Single Ended
Sampling Rate	200 kSPS
Architecture	SAR
Data Interface	SPI, DSP
Analog Supply Voltage	2.7V ~ 5.5V
Digital Supply Voltage	2.7V ~ 5.5V
Operating Temperature Range	-40°C ~ 85°C
Package Type	16-TSSOP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TLV2544IPW is determined by strict equivalence across the following critical parameters:

Resolution & Sampling Rate: Both main and substitute parts must maintain 12-bit resolution at 200 kSPS to ensure functional compatibility in existing designs.
Channel Configuration: 4-channel single-ended input architecture is mandatory for direct replacement.
Data Interface: SPI and DSP interface support must be preserved.
Supply Voltage Ranges: Analog and digital supply voltage compatibility ensures proper operation in existing power delivery systems.
Operating Temperature: -40°C to 85°C range must be maintained for environmental consistency.
Compliance & Certifications: RoHS3 compliance and REACH unaffected status are required for regulatory alignment.

The ADC124S021CIMMX/NOPB qualifies as a direct substitute based on these parameters, despite packaging differences. The substitute maintains identical functional specifications while offering active product status and improved long-term availability.

Parameter Comparison

Parameter	TLV2544IPW	ADC124S021CIMMX/NOPB	Compatibility
Resolution	12 Bits	12 Bits	Equivalent
Number of Input Channels	4	4	Equivalent
Input Type	Single Ended	Single Ended	Equivalent
Sampling Rate	200 kSPS	200 kSPS	Equivalent
Architecture	SAR	SAR	Equivalent
Data Interface	SPI, DSP	SPI, DSP	Equivalent
Analog Supply Voltage	2.7V ~ 5.5V	2.7V ~ 5.25V	Substitute Range Narrower
Digital Supply Voltage	2.7V ~ 5.5V	2.7V ~ 5.25V	Substitute Range Narrower
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Equivalent
Package Type	16-TSSOP	10-VSSOP	Different
Product Status	Last Time Buy	Active	Substitute Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent

Engineering Selection Recommendations

The ADC124S021CIMMX/NOPB is a functionally equivalent substitute for the TLV2544IPW based on core electrical specifications. The substitute maintains identical resolution, sampling rate, channel count, and interface protocols. Both devices operate across the same temperature range and maintain ROHS3 compliance.

The primary design consideration is the supply voltage range. The substitute operates within 2.7V to 5.25V, which is narrower than the original part's 2.7V to 5.5V specification. Applications operating at supply voltages above 5.25V require verification against the substitute's absolute maximum ratings.

The package transition from 16-TSSOP to 10-VSSOP requires PCB layout modification. The substitute's smaller package footprint may offer space advantages in constrained designs but necessitates board redesign and re-qualification.

The ADC124S021CIMMX/NOPB holds active product status, ensuring continued availability and manufacturing support, whereas the TLV2544IPW is in Last Time Buy status. For new designs or long-term production requirements, the substitute is the preferred selection.

Frequently Asked Questions (FAQ)

Q: Can the ADC124S021CIMMX/NOPB directly replace the TLV2544IPW without firmware changes?

A: The substitute maintains identical SPI and DSP interface protocols, resolution, sampling rate, and channel configuration. Firmware compatibility depends on the specific interface implementation in your application. Register definitions and command sequences should be verified against both datasheets.

Q: What is the impact of the narrower supply voltage range on my design?

A: The substitute operates from 2.7V to 5.25V, compared to the original's 2.7V to 5.5V. If your system supplies exactly 5.5V, the substitute may exceed its maximum rating. Designs operating at 5.25V or below are unaffected.

Q: Does the package change from 16-TSSOP to 10-VSSOP affect electrical performance?

A: Package type does not affect electrical performance. Both packages are surface-mount options with equivalent thermal and electrical characteristics for this device class. PCB layout and routing must be adapted to the new footprint.

Q: Are both parts RoHS compliant?

A: Yes, both the TLV2544IPW and ADC124S021CIMMX/NOPB are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Why is the TLV2544IPW in Last Time Buy status?

A: Last Time Buy status indicates Texas Instruments has discontinued production planning for this part. The ADC124S021CIMMX/NOPB represents the active product line continuation with equivalent functionality.

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