TLV2553IPWRQ1 Equivalent & Substitute Parts

Part Overview

The TLV2553IPWRQ1 is a 12-bit Analog to Digital Converter (ADC) with 11 single-ended inputs, utilizing a Successive Approximation Register (SAR) architecture. This device operates at a 200 kSPS sampling rate and communicates via SPI interface. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying qualified substitute components is necessary to ensure continued design support and procurement availability for new production runs and long-term system maintenance.

Substiute Parts

TLV2553IPWRQ1

Texas InstrumentsIn Stock: 4644TLV2553IPWRQ1 Datasheet

Current PartRFQ

ADS7952QDBTRQ1

Texas InstrumentsIn Stock: 4256ADS7952QDBTRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLV2553IPWRQ1 is determined by the following core parameters:

• 12-bit resolution requirement
• SAR architecture
• SPI digital interface
• Single-ended input configuration
• Automotive grade qualification (AEC-Q100)
• ROHS3 compliance
• MSL 3 rating

The ADS7952QDBTRQ1 qualifies as a manufacturer-recommended substitute based on matching resolution, architecture, interface protocol, input type, automotive qualification, and compliance certifications. Variations in input channel count, sampling rate, package type, and temperature range represent design trade-offs that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The ADS7952QDBTRQ1 is qualified as a direct substitute for the TLV2553IPWRQ1 based on matching automotive grade classification and AEC-Q100 qualification. Both devices maintain ROHS3 compliance and identical MSL ratings, ensuring compatibility with existing supply chain and manufacturing processes.

Design considerations for substitution include:

The ADS7952QDBTRQ1 operates at 1 MSPS versus 200 kSPS for the TLV2553IPWRQ1, providing increased sampling capability. The substitute device includes an integrated Programmable Gain Amplifier (PGA) not present in the original part. The package transitions from 20-TSSOP to 38-TSSOP, requiring PCB layout modification. The substitute supports an extended operating temperature range of -40°C to 125°C compared to -40°C to 85°C. Digital supply voltage range expands to 1.7V minimum, while analog supply range narrows slightly to 5.25V maximum.

Frequently Asked Questions (FAQ)

Q: Can the ADS7952QDBTRQ1 directly replace the TLV2553IPWRQ1 without design changes?

A: The ADS7952QDBTRQ1 provides functional equivalence in resolution, architecture, and interface protocol. However, the package change from 20-TSSOP to 38-TSSOP requires PCB layout modification. The increased input channel count (12 versus 11) and integrated PGA are additional features that do not prevent substitution but may require firmware adjustment to optimize performance.

Q: What are the key differences in electrical specifications?

A: The substitute device operates at 5× the sampling rate (1 MSPS versus 200 kSPS). Analog supply voltage maximum decreases from 5.5V to 5.25V. Digital supply voltage minimum decreases from 2.7V to 1.7V, enabling operation in lower-voltage systems. Operating temperature range extends to 125°C maximum versus 85°C for the original part.

Q: Are both devices automotive qualified?

A: Yes. Both the TLV2553IPWRQ1 and ADS7952QDBTRQ1 carry automotive grade classification and AEC-Q100 qualification, ensuring compliance with automotive reliability and quality standards.

Q: What is the impact of the package change?

A: The transition from 20-TSSOP to 38-TSSOP increases pin count and package footprint. PCB routing, component placement, and thermal management strategies must be re-evaluated. The wider package may provide improved thermal performance in high-power applications.

Q: Does the integrated PGA affect substitution compatibility?

A: The Programmable Gain Amplifier in the ADS7952QDBTRQ1 is an additional feature that enhances signal conditioning capability. Firmware can be configured to bypass or utilize the PGA depending on application requirements. This feature does not prevent functional substitution.