AD7870CQ Equivalent & Substitute Parts

Part Overview

The AD7870CQ is a 12-bit Analog to Digital Converter manufactured by Analog Devices Inc., designed for single-ended input data acquisition applications. This SAR (Successive Approximation Register) architecture device operates at a 100 kHz sampling rate with dual supply voltages (±5V analog and digital). The part is currently in active production status with 1,240 units available in new original inventory. Alternative equivalent parts may be required due to inventory constraints, procurement lead times, or specific application requirements within the same electrical and mechanical specifications.

Substiute Parts

AD7870CQ

Analog Devices Inc.In Stock: 1348AD7870CQ Datasheet

Current PartRFQ

AD7870BQ

Analog Devices Inc.In Stock: 684AD7870BQ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AD7870CQ is determined by strict equivalence across the following critical parameters: resolution (12 bits), sampling rate (100 kHz), single-ended input configuration, SAR architecture, internal reference type, dual ±5V supply requirements, 24-CDIP through-hole package, and operating temperature range (-40°C to 85°C). Parts meeting all these specifications are classified as parametric equivalents and may be used interchangeably in circuit designs without modification to PCB layout or firmware interfaces. The AD7870BQ meets all substitution criteria as a parametric equivalent within the AD7870 base product family.

Parameter Comparison

Engineering Selection Recommendations

Both the AD7870CQ and AD7870BQ are active production parts from Analog Devices Inc. with identical electrical specifications and mechanical packaging. Selection between these parts should be based on inventory availability and procurement timelines. Both parts carry ROHS3 compliance, REACH unaffected status, and MSL Level 1 (unlimited moisture sensitivity), making them suitable for standard manufacturing and storage conditions. No design modifications are required when substituting between these parts.

Frequently Asked Questions (FAQ)

Q: Can AD7870BQ replace AD7870CQ in existing designs? A: Yes. The AD7870BQ is a parametric equivalent with identical electrical and mechanical specifications. No PCB layout changes or firmware modifications are required.

Q: Are there any package differences between AD7870CQ and AD7870BQ? A: No. Both parts use the 24-CDIP (0.300", 7.62mm) through-hole package with identical pin configurations and mechanical dimensions.

Q: Do both parts require the same supply voltages? A: Yes. Both the AD7870CQ and AD7870BQ require ±5V for analog supply and ±5V for digital supply.

Q: What determines substitution eligibility for AD7870 variants? A: Substitution is based on matching resolution (12 bits), sampling rate (100 kHz), input configuration (single-ended), architecture (SAR), reference type (internal), supply voltages (±5V dual), package type (24-CDIP), and operating temperature range (-40°C to 85°C).

Q: Are both parts RoHS compliant? A: Yes. Both AD7870CQ and AD7870BQ are ROHS3 compliant with MSL Level 1 rating.