ADS7812P Equivalent & Substitute Parts

Part Overview

The ADS7812P is a 12-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for single-ended input data acquisition applications. It features a Successive Approximation Register (SAR) architecture with a 40 kSPS sampling rate and operates on 5V supply voltage for both analog and digital domains. The device is packaged in a 16-pin DIP configuration suitable for through-hole mounting.

The ADS7812P is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support legacy system maintenance or redesign initiatives.

Substiute Parts

ADS7812P

Texas InstrumentsIn Stock: 1683ADS7812P Datasheet

Current PartRFQ

ADS7812PB

Texas InstrumentsIn Stock: 1170ADS7812PB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ADS7812P is determined by strict equivalence across the following critical parameters:

• Resolution: 12 bits
• Sampling Rate: 40 kSPS
• Input Configuration: 1 single-ended input
• Data Interface: SPI protocol
• Architecture: SAR-based conversion
• Reference Options: External and internal reference support
• Supply Voltages: 5V analog and digital supplies
• Operating Temperature: -40°C to 85°C
• Package: 16-DIP through-hole form factor
• Compliance: ROHS3 compliant

The ADS7812PB qualifies as a direct substitute based on identical electrical specifications, pin configuration, and functional performance across all defined parameters.

Parameter Comparison

Engineering Selection Recommendations

The ADS7812PB is the qualified substitute for the obsolete ADS7812P. Both devices are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters. The primary distinction is product status: the ADS7812P is obsolete while the ADS7812PB remains active in production.

Selection of the ADS7812PB provides:

• Continued supply chain access through active manufacturing status
• Identical functional performance and pin compatibility
• Equivalent compliance certifications (ROHS3, REACH Unaffected, EAR99)
• No circuit redesign required for direct substitution
• Through-hole package compatibility with existing PCB layouts

Frequently Asked Questions (FAQ)

Q: Can the ADS7812PB be used as a direct replacement for the ADS7812P?

A: Yes. The ADS7812PB is electrically and mechanically equivalent to the ADS7812P. All functional parameters, pin assignments, and package dimensions are identical. No circuit modifications are required.

Q: What is the primary reason to substitute the ADS7812P?

A: The ADS7812P is classified as obsolete. The ADS7812PB is the active production equivalent, ensuring long-term supply availability and design continuity.

Q: Are there differences in packaging between these parts?

A: Both devices use the 16-DIP (0.300", 7.62mm) through-hole package. The ADS7812P is supplied in standard packaging, while the ADS7812PB is supplied in tube packaging. This does not affect electrical performance or PCB compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the ADS7812P and ADS7812PB are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Compliance certifications are equivalent.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is based on 12-bit resolution, 40 kSPS sampling rate, single-ended input configuration, SPI data interface, SAR architecture, 5V supply voltages, and -40°C to 85°C operating temperature range.

Q: Is the SPI interface identical between both parts?

A: Yes. Both devices implement the same SPI protocol for data communication. No firmware or software modifications are required for interface compatibility.