AD8669ARUZ Equivalent & Substitute Parts

Part Overview

The AD8669ARUZ is a general-purpose operational amplifier manufactured by Analog Devices Inc., featuring four independent amplifier circuits in a 14-TSSOP surface mount package. This device is classified as a rail-to-rail output amplifier with a gain bandwidth product of 540 kHz and operates across a supply voltage range of 5V to 16V. The part maintains Active product status and is RoHS3 compliant with MSL Level 1 rating.

Substitute parts are identified when equivalent functional performance can be achieved within the same package footprint while maintaining compatibility with the application's electrical and thermal requirements.

Substiute Parts

AD8669ARUZ

Analog Devices Inc.In Stock: 2013AD8669ARUZ Datasheet

Current PartRFQ

LMC6036IMTX/NOPB

National SemiconductorIn Stock: 1203LMC6036IMTX/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AD8669ARUZ is determined by the following critical parameters:

Package Compatibility: The substitute part must utilize the 14-TSSOP surface mount package with identical 0.173" (4.40mm) width to ensure PCB layout compatibility without redesign.

Circuit Configuration: The substitute must provide four independent amplifier circuits to maintain functional equivalence in multi-channel applications.

Output Architecture: Rail-to-rail output capability is required to preserve signal swing characteristics across the specified supply voltage range.

Supply Voltage Range: The substitute must operate within or encompass the 5V to 16V supply span to ensure compatibility with existing power distribution systems.

Operating Temperature Range: The substitute must support the -40°C to 125°C operating window or a subset thereof to maintain thermal performance specifications.

Electrical Performance: Slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current per channel are secondary parameters that define performance characteristics but do not preclude substitution if primary parameters align.

The LMC6036IMTX/NOPB meets the primary substitution criteria through identical package geometry, four-circuit configuration, rail-to-rail output, and overlapping supply voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitution Candidate: LMC6036IMTX/NOPB

The LMC6036IMTX/NOPB qualifies as a direct substitute based on package geometry, circuit count, and output architecture. Both devices utilize the 14-TSSOP surface mount package and provide four independent amplifier circuits with rail-to-rail output capability.

Supply Voltage Compatibility: The LMC6036IMTX/NOPB operates from 2V to 15.5V, which encompasses the AD8669ARUZ minimum requirement of 5V. Applications requiring the full 5V to 16V range of the AD8669ARUZ will operate within the LMC6036IMTX/NOPB specification at 5V to 15.5V.

Temperature Range Consideration: The AD8669ARUZ supports operation to 125°C, while the LMC6036IMTX/NOPB is rated to 85°C. Applications requiring sustained operation above 85°C must retain the AD8669ARUZ.

Compliance Status: Both devices maintain Active product status. The LMC6036IMTX/NOPB carries AEC-Q100 automotive qualification, indicating enhanced reliability screening for automotive applications.

Performance Differentiation: The LMC6036IMTX/NOPB exhibits superior slew rate (1.5V/µs versus 0.3V/µs) and gain bandwidth product (1.4MHz versus 540kHz), supporting higher-frequency signal processing. The LMC6036IMTX/NOPB demonstrates lower input bias current (0.02pA versus 0.3pA) but higher input offset voltage (500µV versus 40µV) and increased supply current consumption (1.3mA versus 230µA per four channels).

Output Current Limitation: The LMC6036IMTX/NOPB provides 8mA per channel output current compared to 50mA per channel for the AD8669ARUZ. Applications requiring high output current drive must retain the AD8669ARUZ.

Frequently Asked Questions (FAQ)

Q: Can the LMC6036IMTX/NOPB replace the AD8669ARUZ in all applications?

A: The LMC6036IMTX/NOPB is compatible with applications operating within the following constraints: supply voltage between 5V and 15.5V, operating temperature not exceeding 85°C, and output current requirements not exceeding 8mA per channel. Applications requiring operation above 85°C or output currents exceeding 8mA per channel must use the AD8669ARUZ.

Q: Are there package compatibility concerns when substituting these parts?

A: Both the AD8669ARUZ and LMC6036IMTX/NOPB utilize the 14-TSSOP package with identical 0.173" (4.40mm) width. PCB footprints are directly compatible without layout modification.

Q: What is the significance of the differential output specification for the LMC6036IMTX/NOPB?

A: The LMC6036IMTX/NOPB is specified with differential and rail-to-rail output capability. This designation indicates the amplifier can drive both positive and negative output swings to the supply rails while maintaining differential output architecture. This is compatible with single-ended applications utilizing the AD8669ARUZ.

Q: How do the input offset voltage specifications affect substitution?

A: The AD8669ARUZ specifies 40µV input offset voltage, while the LMC6036IMTX/NOPB specifies 500µV. Applications requiring precision DC amplification or low-offset performance should evaluate whether the higher offset voltage of the LMC6036IMTX/NOPB introduces unacceptable error. High-frequency AC coupling applications are generally unaffected by this difference.

Q: What is the impact of supply current differences between these devices?

A: The AD8669ARUZ draws 230µA total supply current (four channels), while the LMC6036IMTX/NOPB draws 1.3mA total supply current. Battery-powered or power-constrained applications should account for the 5.7× increase in quiescent current consumption when substituting the LMC6036IMTX/NOPB.

Q: Does the automotive qualification of the LMC6036IMTX/NOPB provide advantages?

A: The LMC6036IMTX/NOPB carries AEC-Q100 automotive qualification, indicating compliance with automotive reliability and environmental stress screening standards. This qualification is beneficial for automotive applications but does not affect functional compatibility in non-automotive environments.

Q: Are there frequency response differences between these amplifiers?

A: The LMC6036IMTX/NOPB provides a gain bandwidth product of 1.4MHz compared to 540kHz for the AD8669ARUZ, and a slew rate of 1.5V/µs compared to 0.3V/µs. Applications requiring bandwidth above 540kHz or slew rates above 0.3V/µs benefit from the LMC6036IMTX/NOPB performance characteristics.