AD818AR Equivalent & Substitute Parts

Part Overview

The AD818AR is a video amplifier integrated circuit manufactured by Analog Devices Inc., classified as a linear voltage feedback amplifier in the 8-SOIC surface mount package. This device is designated as obsolete product status, which necessitates identification of equivalent and substitute components for ongoing design support and production requirements. The AD818AR delivers 130 MHz bandwidth with 500V/µs slew rate, suitable for voltage feedback amplification applications requiring high-speed signal processing.

Key Parameters

Parameter	Value
Manufacturer Part Number	AD818AR
Manufacturer	Analog Devices Inc.
Category	Linear, Amplifiers
Description	IC AMP VOLTAGE FEEDBACK 8SOIC
Number of Circuits	1
-3dB Bandwidth	130 MHz
Slew Rate	500V/µs
Current - Supply	7 mA
Current - Output / Channel	50 mA
Voltage - Supply, Single/Dual (±)	5V ~ 36V, ±2.5V ~ 18V
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the AD818AR is determined by strict alignment of electrical and mechanical parameters within the voltage feedback amplifier category. The primary substitution criteria are:

Critical Matching Parameters:

Package type: 8-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount
Amplifier classification: Voltage Feedback
Number of circuits: 1
Supply voltage range compatibility: Minimum 5V single supply or ±2.5V dual supply capability
Bandwidth and slew rate performance envelope

Substitution Categories:

Direct Equivalent (Packaging Variant): AD818ARZ represents the direct equivalent of AD818AR, differing only in packaging specification (Tube vs. unspecified). This part maintains identical electrical specifications and is classified as Active product status.

Similar Performance Alternatives: The LT1354 series (LT1354CS8, LT1354CS8#PBF, LT1354CS8#TR, LT1354CS8#TRPBF, LT1354IS8#PBF, LT1354IS8#TRPBF) from Analog Devices Inc. operates within compatible electrical parameters. These devices feature the same 8-SOIC package, voltage feedback topology, and supply voltage range. Performance differences include reduced bandwidth (12 MHz gain-bandwidth product vs. 130 MHz) and lower slew rate (400V/µs vs. 500V/µs), with correspondingly lower supply current (1 mA vs. 7 mA).

Cross-Manufacturer Alternatives: The ISL55001 series (ISL55001IBZ, ISL55001IBZ-T13, ISL55001IBZ-T7) from Renesas Electronics Corporation provides voltage feedback amplification in the identical 8-SOIC package with enhanced performance characteristics: 220 MHz bandwidth, 280V/µs slew rate, and 145 mA output current capability. Supply voltage range spans 4.5V to 30V, encompassing the AD818AR specification.

Parameter Comparison

Part Number	Manufacturer	Product Status	-3dB Bandwidth	Slew Rate	Current - Supply	Current - Output / Channel	Voltage - Supply (Min)	Voltage - Supply (Max)	Package / Case	RoHS Status
AD818AR	Analog Devices Inc.	Obsolete	130 MHz	500V/µs	7 mA	50 mA	5V / ±2.5V	36V / ±18V	8-SOIC	Not specified
AD818ARZ	Analog Devices Inc.	Active	130 MHz	500V/µs	7 mA	50 mA	5V / ±2.5V	36V / ±18V	8-SOIC	ROHS3 Compliant
LT1354CS8	Analog Devices Inc.	Active	12 MHz (GBW)	400V/µs	1 mA	30 mA	5V	30V	8-SOIC	ROHS3 Compliant
LT1354CS8#PBF	Analog Devices Inc.	Active	12 MHz (GBW)	400V/µs	1 mA	30 mA	5V	30V	8-SOIC	ROHS3 Compliant
LT1354CS8#TR	Analog Devices Inc.	Active	12 MHz (GBW)	400V/µs	1 mA	30 mA	5V	30V	8-SOIC	ROHS3 Compliant
LT1354CS8#TRPBF	Analog Devices Inc.	Active	12 MHz (GBW)	400V/µs	1 mA	30 mA	5V	30V	8-SOIC	ROHS3 Compliant
LT1354IS8#PBF	Analog Devices Inc.	Active	12 MHz (GBW)	400V/µs	1 mA	30 mA	5V	30V	8-SOIC	ROHS3 Compliant
LT1354IS8#TRPBF	Analog Devices Inc.	Active	12 MHz (GBW)	400V/µs	1 mA	30 mA	5V	30V	8-SOIC	ROHS3 Compliant
ISL55001IBZ	Renesas Electronics Corporation	Active	220 MHz	280V/µs	9 mA	145 mA	4.5V	30V	8-SOIC	ROHS3 Compliant
ISL55001IBZ-T13	Renesas Electronics Corporation	Active	220 MHz	280V/µs	9 mA	145 mA	4.5V	30V	8-SOIC	ROHS3 Compliant
ISL55001IBZ-T7	Renesas Electronics Corporation	Active	220 MHz	280V/µs	9 mA	145 mA	4.5V	30V	8-SOIC	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: AD818ARZ

The AD818ARZ is the direct functional equivalent of the AD818AR, maintaining identical electrical specifications including 130 MHz bandwidth, 500V/µs slew rate, 7 mA supply current, and 50 mA output current. This part is classified as Active product status with ROHS3 compliance certification, ensuring long-term availability and regulatory alignment. The AD818ARZ is suitable for direct substitution in all applications previously designed for the AD818AR.

Secondary Recommendation: ISL55001 Series

The ISL55001IBZ, ISL55001IBZ-T13, and ISL55001IBZ-T7 from Renesas Electronics Corporation provide enhanced performance characteristics within the same 8-SOIC package footprint. These devices deliver superior bandwidth (220 MHz vs. 130 MHz) and increased output current capability (145 mA vs. 50 mA), with supply voltage range extending to 4.5V minimum. All variants are Active product status with ROHS3 compliance. Selection among ISL55001 variants depends on packaging requirements: ISL55001IBZ for bulk packaging, ISL55001IBZ-T13 and ISL55001IBZ-T7 for tape and reel configurations.

Tertiary Recommendation: LT1354 Series

The LT1354 series (LT1354CS8, LT1354CS8#PBF, LT1354CS8#TR, LT1354CS8#TRPBF, LT1354IS8#PBF, LT1354IS8#TRPBF) from Analog Devices Inc. operates within compatible supply voltage specifications and identical package geometry. These devices are suitable for applications where reduced bandwidth (12 MHz gain-bandwidth product) and lower slew rate (400V/µs) are acceptable trade-offs for reduced power consumption (1 mA supply current). All LT1354 variants are Active product status with ROHS3 compliance. Selection among variants depends on operating temperature range (commercial 0°C to 70°C vs. industrial -40°C to 85°C) and packaging format (tube, tape and reel, or unspecified).

Frequently Asked Questions (FAQ)

Q: Can AD818ARZ be used as a direct replacement for AD818AR?

A: Yes. The AD818ARZ is electrically and mechanically identical to the AD818AR, differing only in packaging specification. Both devices feature 130 MHz bandwidth, 500V/µs slew rate, identical supply voltage ranges, and 8-SOIC package geometry. The AD818ARZ is classified as Active product status, ensuring continued availability.

Q: What are the key differences between AD818AR and ISL55001IBZ?

A: Both devices are voltage feedback amplifiers in 8-SOIC packages with compatible supply voltage ranges. The ISL55001IBZ provides enhanced performance: 220 MHz bandwidth versus 130 MHz, 280V/µs slew rate versus 500V/µs, and 145 mA output current versus 50 mA. The ISL55001IBZ requires 9 mA supply current compared to 7 mA for the AD818AR. The ISL55001IBZ is manufactured by Renesas Electronics Corporation and is Active product status.

Q: When should LT1354 series be selected over ISL55001?

A: The LT1354 series is appropriate for applications where power consumption is critical and bandwidth requirements are below 12 MHz gain-bandwidth product. The LT1354 series consumes 1 mA supply current versus 7 mA for AD818AR and 9 mA for ISL55001IBZ. The LT1354 series is limited to 30 mA output current and 400V/µs slew rate, making it unsuitable for high-speed, high-current applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed (AD818ARZ, LT1354 series variants, and ISL55001 series variants) are ROHS3 compliant. The original AD818AR does not specify RoHS status.

Q: What packaging options are available for substitute parts?

A: AD818ARZ is supplied in Tube packaging. LT1354 series variants are available in Tube (LT1354CS8#PBF, LT1354IS8#PBF), Tape & Reel (LT1354CS8#TR, LT1354CS8#TRPBF, LT1354IS8#TRPBF), or unspecified packaging (LT1354CS8, LT1354CS8#TR). ISL55001 series variants are available in Bulk (ISL55001IBZ) or Tape & Reel (ISL55001IBZ-T13, ISL55001IBZ-T7) configurations.

Q: Do all substitute parts operate across the full AD818AR supply voltage range?

A: The AD818ARZ operates across the identical supply voltage range (5V to 36V single supply, ±2.5V to ±18V dual supply). The LT1354 series operates from 5V to 30V, which covers the lower portion of the AD818AR range. The ISL55001 series operates from 4.5V to 30V, extending below the AD818AR minimum but not reaching the 36V maximum. Application-specific supply voltage requirements determine suitability.

Q: What is the operating temperature range for each substitute?

A: AD818ARZ does not specify operating temperature range. LT1354CS8 variants operate from 0°C to 70°C (commercial grade). LT1354IS8 variants operate from -40°C to 85°C (industrial grade). ISL55001 series variants operate from -40°C to 85°C (industrial grade). Application temperature requirements determine appropriate device selection.

Q: Are the substitute parts pin-compatible with AD818AR?

A: All substitute parts utilize the 8-SOIC package with identical 0.154" (3.90mm) width. Pin compatibility requires verification against specific application schematics, as voltage feedback amplifier pinouts may vary between manufacturers despite identical package geometry.

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