TLV1544ID Equivalent & Substitute Parts

Part Overview

The TLV1544ID is a 10-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for data acquisition applications requiring 4 single-ended analog inputs with SPI digital interface. The device operates across a 2.7V to 5.5V supply range and features a SAR (Successive Approximation Register) architecture with an 87 kSPS sampling rate. Currently in Last Time Buy status, the TLV1544ID requires identification of equivalent substitute components to ensure design continuity and long-term supply chain reliability.

Substiute Parts

TLV1544ID

Texas InstrumentsIn Stock: 1672TLV1544ID Datasheet

Current PartRFQ

ADC104S021CIMMX/NOPB

Texas InstrumentsIn Stock: 4399ADC104S021CIMMX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV1544ID is determined by the following critical parameters that must remain consistent:

• Resolution: 10-bit conversion capability
• Input Configuration: 4 single-ended analog inputs
• Digital Interface: SPI protocol support
• Architecture: SAR-based analog-to-digital conversion
• Supply Voltage Range: Compatibility within 2.7V to 5.5V operating window
• Operating Temperature: -40°C to 85°C range
• Mounting Type: Surface mount technology
• RoHS Compliance: ROHS3 Compliant status

The ADC104S021CIMMX/NOPB qualifies as a manufacturer-recommended substitute based on these core parameters. While the substitute exhibits differences in sampling rate (200k vs. 87k), package form factor (10-VSSOP vs. 16-SOIC), and reference type (Supply vs. External), these variations do not preclude substitution when the application requirements permit higher sampling performance and alternative packaging.

Parameter Comparison

Engineering Selection Recommendations

The ADC104S021CIMMX/NOPB is designated as the manufacturer-recommended substitute for the TLV1544ID. Selection of this substitute is supported by the following factors:

• Both devices maintain ROHS3 compliance and identical operating temperature specifications (-40°C to 85°C)
• The substitute is in Active product status, ensuring continued availability and supply chain stability
• The substitute carries AEC-Q100 automotive qualification, providing enhanced reliability documentation
• Both devices employ identical SAR architecture with 4 single-ended inputs and 10-bit resolution
• SPI interface compatibility is maintained; the substitute additionally supports DSP interface capability
• The substitute's higher sampling rate (200k vs. 87k) provides performance headroom for applications not constrained by the original 87 kSPS specification

Design migration requires evaluation of package footprint differences (16-SOIC to 10-VSSOP) and PCB layout modifications. The reduced supply voltage upper limit (5.25V vs. 5.5V) must be verified against system power distribution specifications.

Frequently Asked Questions (FAQ)

Q: Can the ADC104S021CIMMX/NOPB directly replace the TLV1544ID without design changes?

A: Direct pin-for-pin replacement is not possible due to package differences (16-SOIC vs. 10-VSSOP). PCB layout and schematic modifications are required. However, functional compatibility is maintained for applications operating within the substitute's specified voltage range (2.7V to 5.25V).

Q: What is the impact of the different sampling rates (87k vs. 200k)?

A: The substitute's higher sampling rate does not create incompatibility. Applications designed for 87 kSPS operation will function correctly with the 200k SPS-capable substitute. The higher sampling capability provides additional performance margin without requiring design modification.

Q: Are there supply voltage compatibility concerns?

A: The substitute's maximum analog and digital supply voltage is 5.25V compared to the original 5.5V. Systems operating at or above 5.25V require voltage regulation verification to ensure compliance with the substitute's specifications.

Q: Does the substitute support the same digital interface?

A: Yes. The ADC104S021CIMMX/NOPB supports SPI interface identical to the TLV1544ID. The substitute additionally supports DSP interface, which is not required for direct substitution but may enable enhanced functionality.

Q: What packaging considerations apply to this substitution?

A: The substitute uses 10-VSSOP packaging (0.118", 3.00mm width) versus the original 16-SOIC (0.154", 3.90mm width). This represents a significant reduction in package footprint, requiring PCB redesign and potential cost reduction in board area.

Q: Is the substitute qualified for automotive applications?

A: Yes. The ADC104S021CIMMX/NOPB carries AEC-Q100 qualification, making it suitable for automotive-grade applications. The original TLV1544ID does not specify automotive qualification.