ADS7807PB Equivalent & Substitute Parts

Part Overview

The ADS7807PB is a 16-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for single-ended input data acquisition applications. This device 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 ADS7807PB is classified as an obsolete product. Finding equivalent and substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity where original components are no longer readily available or have been discontinued by the manufacturer.

Substiute Parts

ADS7807PB

Texas InstrumentsIn Stock: 1022ADS7807PB Datasheet

Current PartRFQ

ADS8507IBDW

Texas InstrumentsIn Stock: 1193ADS8507IBDW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ADS7807PB is determined by strict equivalence across the following critical parameters:

• Resolution: 16-bit ADC capability
• Sampling Rate: 40 kSPS minimum performance
• Input Configuration: Single-ended input, 1 channel
• Data Interface: SPI and Parallel interface support
• Architecture: SAR-based conversion
• Reference Options: External and Internal reference support
• Supply Voltage: 5V analog and digital supply compatibility
• Operating Temperature: -40°C to 85°C range
• Functional Equivalence: Identical base product functionality

The ADS8507IBDW meets all functional and electrical parameters of the ADS7807PB. The primary difference is the package format: the substitute uses 28-SOIC surface-mount packaging instead of the original 28-DIP through-hole format. This distinction affects board-level integration and assembly methodology but does not alter electrical performance or pin functionality.

Parameter Comparison

Engineering Selection Recommendations

The ADS8507IBDW is the manufacturer-recommended substitute for the obsolete ADS7807PB. Both devices are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Selection between these parts depends on board-level integration requirements:

• ADS7807PB (28-DIP): Suitable for through-hole assembly and breadboard prototyping. Limited availability due to obsolete status.
• ADS8507IBDW (28-SOIC): Recommended for new designs and production systems. Active product status ensures long-term availability and supply chain continuity. Surface-mount packaging supports modern PCB assembly processes.

Both devices provide identical electrical performance and functional capability. The choice between them is determined by existing board design constraints and manufacturing capabilities rather than technical performance considerations.

Frequently Asked Questions (FAQ)

Q: Can the ADS8507IBDW directly replace the ADS7807PB on existing PCBs?

A: Direct socket replacement is not possible due to package format differences. The ADS7807PB uses 28-DIP through-hole packaging, while the ADS8507IBDW uses 28-SOIC surface-mount packaging. PCB redesign or adapter solutions are required for physical integration.

Q: Are the electrical specifications identical between these two parts?

A: Yes. Both devices share identical electrical specifications: 16-bit resolution, 40 kSPS sampling rate, single-ended input, SPI and Parallel interfaces, SAR architecture, external and internal reference support, and 5V supply voltage requirements. Operating temperature ranges are also identical (-40°C to 85°C).

Q: Why is the ADS7807PB classified as obsolete?

A: The ADS7807PB has been discontinued by Texas Instruments. The manufacturer has transitioned to the ADS8507 series, which includes the ADS8507IBDW as the active equivalent. This transition reflects industry movement toward surface-mount packaging and modern manufacturing processes.

Q: What is the difference in moisture sensitivity between these parts?

A: The ADS7807PB has MSL 3 (168 Hours), while the ADS8507IBDW has MSL 2 (1 Year). The ADS8507IBDW demonstrates lower moisture sensitivity, providing better handling flexibility during storage and assembly.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the ADS7807PB and ADS8507IBDW are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What inventory status should I expect?

A: The ADS7807PB is available in limited quantities (1002 Pcs) as new original stock due to its obsolete status. The ADS8507IBDW is actively manufactured and stocked (1102 Pcs) with ongoing supply availability.