TLV2548CPWR Equivalent & Substitute Parts

Part Overview

The TLV2548CPWR is a 12-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for data acquisition applications requiring 8 single-ended inputs with a 200 kSPS sampling rate. The device operates across a 2.7V to 5.5V supply range and features a SAR (Successive Approximation Register) architecture with both SPI and DSP data interfaces. Currently in Last Time Buy status, this component requires identification of suitable alternatives for new designs and ongoing production support.

Substiute Parts

TLV2548CPWR

Texas InstrumentsIn Stock: 2497TLV2548CPWR Datasheet

Current PartRFQ

ADS7038IRTER

Texas InstrumentsIn Stock: 12251ADS7038IRTER Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV2548CPWR is determined by the following core electrical and mechanical parameters:

• Resolution and Input Configuration: 12-bit resolution with 8 single-ended inputs
• Sampling Rate: Minimum 200 kSPS capability
• Architecture: SAR-based analog-to-digital conversion
• Data Interface: SPI compatibility for digital communication
• Supply Voltage Compatibility: Overlapping analog and digital supply ranges
• Package Compatibility: Surface mount form factor suitable for PCB integration
• Compliance: ROHS3 compliance and EAR99 classification

The ADS7038IRTER qualifies as a manufacturer-recommended substitute based on matching these core parameters while offering enhanced performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ADS7038IRTER is the manufacturer-recommended substitute for the TLV2548CPWR. Selection of this alternative is supported by the following factors:

Compliance and Support: Both devices maintain ROHS3 compliance and EAR99 classification. The ADS7038IRTER carries Active product status, ensuring continued manufacturer support and availability, whereas the TLV2548CPWR is designated Last Time Buy.

Electrical Compatibility: The substitute maintains 12-bit resolution, 8 single-ended inputs, and SAR architecture. The ADS7038IRTER provides a 1 MHz sampling rate, exceeding the 200 kSPS requirement of the original device. Supply voltage ranges are wider on the substitute, offering greater design flexibility.

Interface Considerations: The ADS7038IRTER supports SPI data interface, matching the primary communication protocol of the TLV2548CPWR. The original device's DSP interface is not replicated in the substitute; designs dependent on DSP functionality require alternative solutions.

Package Transition: The substitute uses a 16-WQFN (3x3) package versus the original 20-TSSOP package. This change necessitates PCB layout redesign and footprint modification. The WQFN package offers reduced board area and improved thermal characteristics.

Temperature Range: The ADS7038IRTER supports -40°C to 125°C operation, compared to the original 0°C to 70°C range, enabling deployment in extended temperature environments.

Frequently Asked Questions (FAQ)

Q: Can the ADS7038IRTER directly replace the TLV2548CPWR without PCB modifications?

A: No. The ADS7038IRTER uses a 16-WQFN (3x3) package while the TLV2548CPWR uses a 20-TSSOP package. Pin counts and footprints differ, requiring PCB redesign and layout modifications. Schematic review is necessary to confirm signal routing compatibility.

Q: What is the impact of the different sampling rates?

A: The ADS7038IRTER provides 1 MHz sampling rate versus the TLV2548CPWR's 200 kSPS. This higher performance does not create incompatibility; systems designed for 200 kSPS operation function correctly with the faster substitute. Software configuration may require adjustment to set the desired sampling rate.

Q: Are the data interfaces fully compatible?

A: The ADS7038IRTER supports SPI interface, matching the TLV2548CPWR's primary communication protocol. The original device also supports DSP interface, which is not available on the substitute. Designs utilizing DSP functionality require alternative component selection.

Q: What are the supply voltage considerations?

A: Both devices operate within overlapping voltage ranges. The ADS7038IRTER accepts 2.35V to 5.5V analog supply and 1.65V to 5.5V digital supply, compared to 2.7V to 5.5V for both supplies on the original. Existing power supply designs remain compatible; the substitute offers flexibility for lower-voltage applications.

Q: Does the wider operating temperature range of the substitute affect compatibility?

A: No. The ADS7038IRTER's -40°C to 125°C range encompasses the original device's 0°C to 70°C range. Systems designed for the original temperature specification operate within the substitute's rated range without additional thermal management.

Q: What compliance certifications apply to both devices?

A: Both the TLV2548CPWR and ADS7038IRTER are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Compliance documentation remains consistent across the substitution.