ADS7806PB Equivalent & Substitute Parts

Part Overview

The ADS7806PB is a 12-bit Analog to Digital Converter 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 from a 5V supply. The ADS7806PB is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning.

Substiute Parts

ADS7806PB

Texas InstrumentsIn Stock: 882ADS7806PB Datasheet

Current PartRFQ

ADS8506IBDW

Texas InstrumentsIn Stock: 2584ADS8506IBDW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ADS7806PB is determined by electrical and mechanical parameter alignment. The following criteria establish functional equivalence:

Electrical Parameters (Critical):

• Resolution: 12 bits
• Sampling Rate: 40 kSPS
• Number of Inputs: 1 (single-ended)
• Data Interface: SPI and Parallel support
• Architecture: SAR
• Reference Type: External and Internal capability
• Supply Voltage: 5V (both analog and digital)
• Operating Temperature Range: -40°C to 85°C

Mechanical Parameters (Functional Compatibility):

• Package type and pin count must accommodate the application's mounting requirements
• Pin configuration must support the same signal routing and interface protocols

The ADS8506IBDW meets all electrical specifications while differing in package form factor (28-SOIC surface mount versus 28-DIP through-hole) and product status (active versus obsolete).

Parameter Comparison

Engineering Selection Recommendations

The ADS8506IBDW is the manufacturer-recommended substitute for the obsolete ADS7806PB. Both devices are ROHS3 compliant and maintain identical electrical specifications across all critical parameters: 12-bit resolution, 40 kSPS sampling rate, single-ended input configuration, dual data interface support (SPI and Parallel), and 5V supply operation.

The primary distinction between these parts is packaging and mounting technology. The ADS7806PB uses a 28-pin DIP through-hole package suitable for breadboard prototyping and legacy PCB designs. The ADS8506IBDW employs a 28-pin SOIC surface-mount package, which is standard in modern manufacturing and offers improved thermal characteristics and board density.

Selection between these parts depends on PCB design requirements and manufacturing capabilities. Through-hole mounting may be necessary for existing designs or applications requiring manual assembly. Surface-mount technology is preferred for high-volume production and contemporary PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the ADS8506IBDW directly replace the ADS7806PB in an existing design?

A: Electrical substitution is direct. Pin configuration and signal routing are identical. Physical substitution requires PCB redesign to accommodate the different package form factor (DIP to SOIC). Adapter boards or rework may be necessary for legacy through-hole designs.

Q: What is the difference between the 28-DIP and 28-SOIC packages?

A: The 28-DIP (Dual In-line Package) is a through-hole component with leads inserted into PCB holes. The 28-SOIC (Small Outline Integrated Circuit) is a surface-mount component with leads soldered directly to PCB pads. SOIC packages occupy less board space and are compatible with automated assembly processes.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant and carry identical regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001). The ADS8506IBDW has a lower Moisture Sensitivity Level (MSL 2, 1 Year) compared to the ADS7806PB (MSL 3, 168 Hours), indicating improved moisture tolerance during storage and handling.

Q: Why is the ADS7806PB classified as obsolete?

A: Obsolescence reflects Texas Instruments' product lifecycle management. The ADS8506IBDW represents the current-generation equivalent, offering the same electrical performance in a modern surface-mount package aligned with contemporary manufacturing standards.

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

A: Resolution (12 bits), sampling rate (40 kSPS), input configuration (1 single-ended input), data interface support (SPI and Parallel), supply voltage (5V), and operating temperature range (-40°C to 85°C) are the defining electrical parameters. Any substitute must match these specifications exactly.