ADS8422IPFBT Equivalent & Substitute Parts

Part Overview

The ADS8422IPFBT is a 16-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, part of the microPOWER™ series. This SAR (Successive Approximation Register) architecture device features a single differential input with parallel data interface and operates at 4M samples per second. The component is housed in a 48-TQFP (7x7) surface mount package.

The ADS8422IPFBT is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this data acquisition component.

Key Parameters

Parameter	Value
Resolution	16 Bit
Sampling Rate	4M Samples Per Second
Number of Inputs	1
Input Type	Differential
Architecture	SAR
Data Interface	Parallel
Reference Type	External, Internal
Voltage Supply - Analog	5V
Voltage Supply - Digital	2.7V ~ 5.25V
Operating Temperature Range	-40°C ~ 85°C
Package Type	48-TQFP (7x7)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the ADS8422IPFBT are identified based on electrical and mechanical parameter equivalence. All substitute candidates maintain identical specifications across the following critical parameters:

16-bit resolution
4M samples per second sampling rate
Single differential input configuration
SAR architecture with parallel data interface
External and internal reference capability
5V analog supply voltage
2.7V to 5.25V digital supply voltage range
-40°C to 85°C operating temperature range
48-TQFP (7x7) package footprint
Surface mount mounting type
microPOWER™ series classification

The substitute parts differ primarily in product status (active versus obsolete) and packaging format (Cut Tape & Digi-Reel® versus standard packaging), with no impact on functional or electrical performance.

Parameter Comparison

Parameter	ADS8422IPFBT (Main)	ADS8422IBPFBT (Substitute)	ADS8422IBPFBR (Substitute)	ADS8422IPFBR (Substitute)
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Resolution	16 Bit	16 Bit	16 Bit	16 Bit
Sampling Rate	4M	4M	4M	4M
Number of Inputs	1	1	1	1
Input Type	Differential	Differential	Differential	Differential
Data Interface	Parallel	Parallel	Parallel	Parallel
Architecture	SAR	SAR	SAR	SAR
Reference Type	External, Internal	External, Internal	External, Internal	External, Internal
Voltage - Supply, Analog	5V	5V	5V	5V
Voltage - Supply, Digital	2.7V ~ 5.25V	2.7V ~ 5.25V	2.7V ~ 5.25V	2.7V ~ 5.25V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	48-TQFP (7x7)	48-TQFP (7x7)	48-TQFP (7x7)	48-TQFP (7x7)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All three substitute parts (ADS8422IBPFBT, ADS8422IBPFBR, and ADS8422IPFBR) are functionally equivalent to the ADS8422IPFBT and maintain full electrical and mechanical compatibility. The primary distinction is product status: all substitutes are classified as active, whereas the original part is obsolete.

For new designs or ongoing production requiring this data acquisition functionality, selection should prioritize active parts. ADS8422IBPFBT is designated as the manufacturer-recommended substitute and is available in Cut Tape and Digi-Reel® packaging formats. ADS8422IBPFBR and ADS8422IPFBR are parametric equivalents with identical electrical specifications and are available in standard packaging.

All candidates maintain ROHS3 compliance, REACH unaffected status, and MSL rating of 2 (1 Year), ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can ADS8422IBPFBT, ADS8422IBPFBR, and ADS8422IPFBR be used interchangeably with ADS8422IPFBT?

A: Yes. All three parts are electrically and mechanically equivalent. They share identical resolution, sampling rate, input configuration, supply voltage requirements, temperature range, and 48-TQFP package footprint. Differences in part numbering reflect packaging format and product status only.

Q: What is the difference between the substitute part numbers?

A: The differences are encoded in the part number suffix. ADS8422IBPFBT is the manufacturer-recommended substitute available in Cut Tape and Digi-Reel® packaging. ADS8422IBPFBR and ADS8422IPFBR are parametric equivalents with standard packaging. All three maintain identical electrical performance and pin compatibility.

Q: Why is the original ADS8422IPFBT listed as obsolete?

A: Product obsolescence is determined by the manufacturer based on market demand and product lifecycle management. Active substitute parts are available to support continued system design and production requirements.

Q: Are there any compliance or certification differences between the main part and substitutes?

A: No. All parts maintain identical RoHS3 compliance, REACH unaffected status, and MSL rating of 2 (1 Year). Regulatory and environmental specifications are equivalent across all candidates.

Q: What packaging options are available for substitutes?

A: ADS8422IBPFBT is available in Cut Tape and Digi-Reel® packaging. ADS8422IBPFBR and ADS8422IPFBR are available in standard packaging formats. All maintain the same 48-TQFP (7x7) footprint for PCB compatibility.

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