AD828AR Equivalent & Substitute Parts

Part Overview

The AD828AR is a dual-channel voltage feedback amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production requirements. The AD828AR serves applications requiring video amplification and voltage feedback configurations with moderate bandwidth and slew rate specifications. Due to its obsolete status, direct equivalents and functional alternatives are required for system continuity and new designs.

Key Parameters

Parameter	Value
Manufacturer Part Number	AD828AR
Manufacturer	Analog Devices Inc.
Category	Linear, Amplifiers
Number of Circuits	2
-3dB Bandwidth	130 MHz
Slew Rate	450 V/µs
Current - Supply	14 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)
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the AD828AR is determined by the following critical parameters that must align with the original design requirements:

Primary Substitution Criteria:

Number of Circuits: 2 (dual-channel configuration)
Package / Case: 8-SOIC (0.154", 3.90mm Width) for mechanical and electrical compatibility
Mounting Type: Surface Mount
Amplifier Type: Voltage Feedback
Voltage Supply Range: Minimum 5V single supply or ±2.5V dual supply capability
Slew Rate: Minimum 450 V/µs for video amplification performance
-3dB Bandwidth: Minimum 130 MHz for signal fidelity

Substitution Categories:

Direct Equivalent (Packaging Variant): AD828ARZ represents the active production equivalent of AD828AR, differing only in packaging format (Tube vs. standard packaging). This part maintains identical electrical specifications and is the primary direct substitute.

Functional Equivalents (Higher Performance): THS4022CD and THS4022ID exceed the AD828AR specifications with 350 MHz bandwidth and 470 V/µs slew rate, providing enhanced performance margin for video amplification applications. These parts are compatible within the same 8-SOIC package footprint.

Functional Equivalents (Moderate Performance): THS4032CD and THS4032CDR provide 100 MHz bandwidth and 100 V/µs slew rate, suitable for applications with reduced bandwidth requirements while maintaining the 8-SOIC package compatibility.

Alternative Topology (Lower Performance): LT1361CS8, LT1361CS8#PBF, and LT1361CS8#TRPBF represent voltage feedback amplifiers with 50 MHz gain bandwidth product and 800 V/µs slew rate. These parts operate within compatible supply voltage ranges and 8-SOIC packaging but exhibit different performance characteristics.

General Purpose Alternative: NCV33272ADR2G is a general-purpose dual amplifier with automotive qualification (AEC-Q100), offering lower bandwidth (24 MHz) and slew rate (10 V/µs) but extended temperature range (-40°C to 125°C) and automotive-grade reliability.

Parameter Comparison

Part Number	Manufacturer	Product Status	Number of Circuits	-3dB Bandwidth (MHz)	Slew Rate (V/µs)	Current - Supply (mA)	Current - Output / Channel (mA)	Voltage - Supply Min (V)	Voltage - Supply Max (V)	Package / Case	RoHS Status
AD828AR	Analog Devices Inc.	Obsolete	2	130	450	14	50	5 (±2.5)	36 (±18)	8-SOIC	Not Specified
AD828ARZ	Analog Devices Inc.	Active	2	130	450	14	50	5 (±2.5)	36 (±18)	8-SOIC	ROHS3 Compliant
THS4022CD	Texas Instruments	Last Time Buy	2	350	470	7.8	100	9	32	8-SOIC	ROHS3 Compliant
THS4022ID	Texas Instruments	Last Time Buy	2	350	470	7.8	100	9	32	8-SOIC	ROHS3 Compliant
THS4032CD	Texas Instruments	Obsolete	2	100	100	8.5	90	9	32	8-SOIC	ROHS3 Compliant
THS4032CDR	Texas Instruments	Obsolete	2	100	100	8.5	90	9	32	8-SOIC	ROHS3 Compliant
LT1361CS8	Analog Devices Inc.	Active	2	50	800	4	34	5	30	8-SOIC	ROHS3 Compliant
LT1361CS8#PBF	Analog Devices Inc.	Active	2	50	800	4	34	5	30	8-SOIC	ROHS3 Compliant
LT1361CS8#TR	Analog Devices Inc.	Active	2	50	800	4	34	5	30	8-SOIC	ROHS3 Compliant
LT1361CS8#TRPBF	Analog Devices Inc.	Active	2	50	800	4	34	5	30	8-SOIC	ROHS3 Compliant
NCV33272ADR2G	onsemi	Active	2	24	10	2.15	37	3	36	8-SOIC	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: AD828ARZ

The AD828ARZ is the direct active equivalent of the AD828AR. This part maintains identical electrical specifications (130 MHz bandwidth, 450 V/µs slew rate, 14 mA supply current, 50 mA output current per channel) and operates within the same supply voltage range (5V to 36V single supply, ±2.5V to ±18V dual supply). The AD828ARZ is ROHS3 compliant and carries Active product status, ensuring long-term availability and supply chain continuity. The only difference is packaging format (Tube), which does not affect electrical performance or PCB integration. This substitution requires no circuit redesign.

Secondary Recommendation: THS4022CD or THS4022ID

For applications requiring enhanced performance margin, the THS4022CD and THS4022ID offer superior specifications with 350 MHz bandwidth and 470 V/µs slew rate. Both parts are housed in 8-SOIC packages and are ROHS3 compliant. However, these parts carry Last Time Buy status, indicating limited future availability. The minimum supply voltage requirement is 9V (versus 5V for AD828AR), which may require circuit modification in low-voltage applications. Output current capability is doubled to 100 mA per channel. These parts are suitable for new designs where higher performance is required and supply voltage constraints are not limiting.

Tertiary Recommendation: LT1361CS8, LT1361CS8#PBF, or LT1361CS8#TRPBF

The LT1361 series represents an alternative voltage feedback topology with Active product status and ROHS3 compliance. These parts offer 800 V/µs slew rate but reduced bandwidth (50 MHz gain bandwidth product). The maximum supply voltage is limited to 30V (versus 36V for AD828AR). These parts are suitable for applications where bandwidth requirements are less stringent and slew rate performance is prioritized. Multiple packaging variants (standard, PBF, and Tape & Reel) provide flexibility for different procurement requirements.

Not Recommended for Direct Substitution: NCV33272ADR2G

The NCV33272ADR2G is a general-purpose amplifier with automotive qualification (AEC-Q100). While it offers extended temperature range (-40°C to 125°C) and automotive-grade reliability, its performance specifications (24 MHz bandwidth, 10 V/µs slew rate) are significantly reduced compared to the AD828AR. This part is suitable only for applications where video amplification performance is not critical and automotive-grade qualification is required.

Not Recommended: THS4032CD and THS4032CDR

Both THS4032 variants carry Obsolete product status, presenting the same supply chain risk as the original AD828AR. While these parts offer 8-SOIC packaging compatibility, their reduced bandwidth (100 MHz) and slew rate (100 V/µs) do not justify selection over active alternatives.

Frequently Asked Questions (FAQ)

Q: Can AD828ARZ be used as a direct replacement for AD828AR without circuit modification?

A: Yes. The AD828ARZ is electrically identical to the AD828AR, with identical bandwidth (130 MHz), slew rate (450 V/µs), supply current (14 mA), output current (50 mA per channel), and supply voltage range (5V to 36V single supply, ±2.5V to ±18V dual supply). The only difference is packaging format (Tube). No circuit redesign is required. The AD828ARZ is ROHS3 compliant and carries Active product status.

Q: What is the key difference between AD828AR and THS4022CD?

A: The THS4022CD offers superior performance with 350 MHz bandwidth (versus 130 MHz) and 470 V/µs slew rate (versus 450 V/µs). However, the THS4022CD requires a minimum supply voltage of 9V, whereas the AD828AR operates from 5V. The THS4022CD carries Last Time Buy status, indicating limited future availability. Both parts use 8-SOIC packaging and are ROHS3 compliant.

Q: Is the LT1361CS8 suitable for video amplification applications?

A: The LT1361CS8 is a voltage feedback amplifier with 50 MHz gain bandwidth product and 800 V/µs slew rate. For video amplification applications requiring 130 MHz bandwidth, the LT1361CS8 does not meet the performance requirements. The LT1361CS8 is suitable for lower-bandwidth applications where slew rate performance is prioritized. The LT1361CS8 is ROHS3 compliant and carries Active product status.

Q: Can NCV33272ADR2G replace AD828AR in existing designs?

A: No. The NCV33272ADR2G is a general-purpose amplifier with significantly reduced performance (24 MHz bandwidth, 10 V/µs slew rate) compared to the AD828AR (130 MHz bandwidth, 450 V/µs slew rate). This part is suitable only for applications where video amplification performance is not critical. The NCV33272ADR2G offers automotive-grade qualification (AEC-Q100) and extended temperature range (-40°C to 125°C), which may be beneficial for automotive applications with reduced bandwidth requirements.

Q: What packaging options are available for the AD828 equivalent?

A: The AD828ARZ is available in Tube packaging. The LT1361 series offers multiple packaging variants: LT1361CS8 (standard), LT1361CS8#PBF (Tube), and LT1361CS8#TRPBF (Tape & Reel). All parts use 8-SOIC (0.154", 3.90mm Width) surface mount packages, ensuring PCB footprint compatibility.

Q: Why is AD828AR classified as obsolete?

A: The AD828AR has reached end-of-life status. The AD828ARZ is the active production equivalent and is recommended for all new designs and ongoing production requirements. The AD828ARZ maintains identical electrical specifications and is ROHS3 compliant.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts (AD828ARZ, THS4022CD, THS4022ID, LT1361CS8 variants, and NCV33272ADR2G) are ROHS3 compliant. The original AD828AR does not specify RoHS status.

Q: What is the supply voltage compatibility between AD828AR and THS4022 variants?

A: The AD828AR operates from 5V to 36V (single supply) or ±2.5V to ±18V (dual supply). The THS4022CD and THS4022ID require a minimum supply voltage of 9V and maximum of 32V. Designs operating at 5V to 8V single supply cannot use THS4022 variants without circuit modification.

Q: Which substitute part offers the best long-term availability?

A: The AD828ARZ, LT1361CS8 series, and NCV33272ADR2G all carry Active product status, ensuring long-term availability. The THS4022 variants carry Last Time Buy status, indicating limited future availability. For new designs, AD828ARZ or LT1361 series are recommended for supply chain continuity.

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