TLV1570CPWRG4 Equivalent & Substitute Parts

Part Overview

The TLV1570CPWRG4 is a 10-bit Analog to Digital Converter (ADC) with 8 single-ended inputs, utilizing a Successive Approximation Register (SAR) architecture. This device features an integrated multiplexer and operates across a supply voltage range of 2.7V to 5.5V for both analog and digital domains. The TLV1570CPWRG4 is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

TLV1570CPWRG4

Texas InstrumentsIn Stock: 1121TLV1570CPWRG4 Datasheet

Current PartRFQ

ADS7955SDBTR

Texas InstrumentsIn Stock: 3964ADS7955SDBTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV1570CPWRG4 is determined by the following critical parameters:

• Resolution: 10-bit conversion capability
• Input Configuration: 8 single-ended analog inputs
• Architecture: SAR-based ADC with integrated multiplexer
• Data Interface: SPI serial communication protocol
• Supply Voltage Compatibility: Overlapping operating ranges for both analog and digital supplies
• Package Compatibility: Surface-mount form factor with compatible pin density

The ADS7955SDBTR meets these core functional requirements while offering extended operating temperature range and improved power efficiency through the microPOWER™ series designation.

Parameter Comparison

Engineering Selection Recommendations

The ADS7955SDBTR serves as the manufacturer-recommended substitute for the obsolete TLV1570CPWRG4. Both devices maintain ROHS3 compliance and share identical core ADC specifications: 10-bit resolution, 8 single-ended inputs, SAR architecture, and SPI interface.

The ADS7955SDBTR provides extended operational advantages including active product status, expanded operating temperature range (-40°C to 125°C versus 0°C to 70°C), and reduced digital supply voltage floor (1.7V versus 2.7V). The microPOWER™ series designation indicates optimized power consumption characteristics.

Package transition from 20-TSSOP to 30-TFSOP requires PCB layout modification. The sampling rate reduction from 1.25 MSPS to 1.0 MSPS is acceptable for applications not requiring maximum conversion speed. Analog supply voltage compatibility is maintained within the overlapping 2.7V to 5.25V range.

Frequently Asked Questions (FAQ)

Q: Can the ADS7955SDBTR directly replace the TLV1570CPWRG4 without design changes?

A: Functional substitution is possible with PCB layout modifications. The 30-TFSOP package differs from the 20-TSSOP package, requiring footprint redesign. Pin assignments and signal timing must be verified against respective datasheets.

Q: What is the impact of the reduced sampling rate (1.0 MSPS versus 1.25 MSPS)?

A: The 20% reduction in maximum sampling rate affects applications requiring high-speed sequential channel conversion. For multiplexed 8-channel operation, the effective per-channel rate remains adequate for most industrial and consumer applications.

Q: Are there supply voltage compatibility concerns?

A: The analog supply voltage range of the ADS7955SDBTR (2.7V to 5.25V) is compatible with the TLV1570CPWRG4 operating range within the 2.7V to 5.25V overlap. Systems operating at 5.5V analog supply require verification of ADS7955SDBTR absolute maximum ratings.

Q: What certifications and compliance standards apply?

A: Both devices maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification. Moisture sensitivity levels differ: TLV1570CPWRG4 (MSL 1, unlimited) versus ADS7955SDBTR (MSL 2, 1 year).

Q: Is the extended operating temperature range of the ADS7955SDBTR beneficial?

A: The ADS7955SDBTR supports -40°C to 125°C operation compared to 0°C to 70°C for the TLV1570CPWRG4, enabling deployment in industrial and automotive environments with wider temperature extremes.