AD847AR Equivalent & Substitute Parts

Part Overview

The AD847AR is a general-purpose operational amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This device is classified as obsolete, indicating it is no longer in active production. The AD847AR delivers a 50 MHz gain bandwidth product with a 300V/µs slew rate, making it suitable for applications requiring moderate-speed signal conditioning and amplification. Due to its obsolete status, identifying equivalent and substitute parts is necessary for design continuity, production support, and long-term system reliability.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Slew Rate	300	V/µs
Gain Bandwidth Product	50	MHz
Current - Input Bias	3.3	µA
Voltage - Input Offset	500	µV
Current - Supply	5.3	mA
Current - Output / Channel	32	mA
Voltage - Supply Span (Min)	9	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the AD847AR is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Amplifier Type: General Purpose
Number of Circuits: 1
Slew Rate: 300V/µs (primary performance differentiator)
Gain Bandwidth Product: 50 MHz (primary performance differentiator)
Current - Input Bias: 3.3 µA
Voltage - Input Offset: 500 µV
Current - Supply: 5.3 mA
Current - Output / Channel: 32 mA
Voltage - Supply Span: 9V to 36V
Operating Temperature: -40°C to 85°C

Mechanical Compatibility Criteria:

Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories:

Category 1: Direct Equivalents — Parts with identical electrical specifications and package configuration. The AD847ARZ represents a direct equivalent with active product status and improved compliance certifications.

Category 2: Functional Alternatives — Parts with different electrical performance characteristics but compatible package and mounting specifications. These alternatives operate within the general-purpose amplifier category and share the 8-SOIC package form factor. Functional alternatives include the NE5534 series, SA5534 series, and OPA604 series, which exhibit lower slew rates (13V/µs to 25V/µs) and reduced gain bandwidth products (10 MHz to 20 MHz) compared to the AD847AR.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (MHz)	Input Bias (µA)	Supply Span (V)	Temp Range (°C)	Package	RoHS Status
AD847AR	Analog Devices Inc.	Obsolete	300	50	3.3	9–36	-40 to 85	8-SOIC	—
AD847ARZ	Analog Devices Inc.	Active	300	50	3.3	9–36	-40 to 85	8-SOIC	ROHS3 Compliant
NE5534AD	onsemi	Obsolete	13	10	0.5	6–40	0 to 70	8-SOIC	—
NE5534ADR	Texas Instruments	Last Time Buy	13	10	0.5	10–30	0 to 70	8-SOIC	ROHS3 Compliant
NE5534D	onsemi	Obsolete	13	10	0.5	6–40	0 to 70	8-SOIC	RoHS non-compliant
OPA604AU	Texas Instruments	Active	25	20	0.005	9–48	-25 to 85	8-SOIC	ROHS3 Compliant
OPA604AU/2K5	Texas Instruments	Active	25	20	0.005	9–48	-25 to 85	8-SOIC	ROHS3 Compliant
SA5534AD	onsemi	Obsolete	13	10	0.5	6–40	-40 to 85	8-SOIC	RoHS non-compliant
SA5534ADR	Texas Instruments	Last Time Buy	13	10	0.5	10–30	-40 to 85	8-SOIC	ROHS3 Compliant
SA5534D	Texas Instruments	Last Time Buy	13	10	0.5	10–30	-40 to 85	8-SOIC	ROHS3 Compliant
SA5534PSR	Texas Instruments	Last Time Buy	13	10	0.5	10–30	-40 to 85	8-SOIC	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility):

The AD847ARZ is the recommended direct replacement for the AD847AR. Both parts share identical electrical specifications, including 300V/µs slew rate, 50 MHz gain bandwidth product, and -40°C to 85°C operating temperature range. The AD847ARZ maintains active product status and carries ROHS3 compliance certification, providing superior long-term availability and regulatory alignment compared to the obsolete AD847AR.

Performance-Reduced Alternatives (Functional Substitution):

The NE5534 series (NE5534ADR, NE5534D, NE5534AD) and SA5534 series (SA5534ADR, SA5534D, SA5534AD, SA5534PSR) operate at reduced performance levels with 13V/µs slew rate and 10 MHz gain bandwidth product. These alternatives are suitable for applications where the full 300V/µs slew rate and 50 MHz bandwidth of the AD847AR are not required. The SA5534ADR and SA5534D variants from Texas Instruments carry ROHS3 compliance and Last Time Buy status, offering better regulatory compliance than obsolete alternatives.

Enhanced Performance Alternative:

The OPA604AU and OPA604AU/2K5 from Texas Instruments provide active product status and ROHS3 compliance. These devices deliver 25V/µs slew rate and 20 MHz gain bandwidth product, positioning them between the reduced-performance NE5534/SA5534 series and the high-performance AD847AR. The OPA604 series extends the supply voltage range to 48V maximum and improves input bias current to 5 pA, making them suitable for precision applications requiring modern component availability.

Compliance and Availability Considerations:

Parts with Last Time Buy status (NE5534ADR, SA5534ADR, SA5534D, SA5534PSR) offer higher inventory availability than obsolete alternatives but represent end-of-life products. Active status parts (AD847ARZ, OPA604AU, OPA604AU/2K5) provide indefinite long-term availability and are recommended for new designs or production continuity beyond current inventory depletion.

Frequently Asked Questions (FAQ)

Q: Can the AD847ARZ be used as a direct replacement for the AD847AR without circuit modification?

A: Yes. The AD847ARZ is electrically and mechanically identical to the AD847AR. Both devices share the same 8-SOIC package, identical electrical specifications (300V/µs slew rate, 50 MHz gain bandwidth product), and compatible supply voltage range (9V to 36V). No circuit modifications are required.

Q: What is the primary difference between the AD847AR and the NE5534 series?

A: The AD847AR operates at 300V/µs slew rate with 50 MHz gain bandwidth product. The NE5534 series (NE5534AD, NE5534ADR, NE5534D) operates at 13V/µs slew rate with 10 MHz gain bandwidth product. The AD847AR is suitable for high-speed signal conditioning applications, while the NE5534 series is optimized for lower-speed, lower-noise audio and instrumentation applications.

Q: Are the SA5534 and NE5534 series interchangeable?

A: The SA5534 and NE5534 series share identical electrical specifications (13V/µs slew rate, 10 MHz gain bandwidth product, 500 nA input bias current, 500 µV input offset voltage). Both are housed in 8-SOIC packages. The primary differences are manufacturer (onsemi versus Texas Instruments) and product status. SA5534ADR and SA5534D from Texas Instruments carry ROHS3 compliance and Last Time Buy status, while NE5534ADR also carries ROHS3 compliance and Last Time Buy status.

Q: What is the operating temperature range difference between the AD847AR and NE5534 series?

A: The AD847AR operates from -40°C to 85°C. The NE5534 series (NE5534AD, NE5534ADR, NE5534D) operates from 0°C to 70°C. The SA5534 series (SA5534AD, SA5534ADR, SA5534D, SA5534PSR) operates from -40°C to 85°C, matching the AD847AR temperature range. For applications requiring -40°C operation, SA5534 variants are required.

Q: Can the OPA604AU replace the AD847AR in all applications?

A: The OPA604AU shares the 8-SOIC package and compatible supply voltage range (9V to 48V) with the AD847AR. However, the OPA604AU operates at 25V/µs slew rate and 20 MHz gain bandwidth product, which are lower than the AD847AR's 300V/µs and 50 MHz specifications. The OPA604AU is suitable for applications where the reduced slew rate and bandwidth are acceptable. The OPA604AU offers superior input bias current (5 pA versus 3.3 µA) and active product status.

Q: What is the difference between SA5534PSR and SA5534ADR?

A: Both parts share identical electrical specifications (13V/µs slew rate, 10 MHz gain bandwidth product). The primary difference is packaging: SA5534PSR is supplied in Tape & Reel (TR) format with 8-SO package (0.209", 5.30mm width), while SA5534ADR is supplied in Cut Tape (CT) & Digi-Reel format with 8-SOIC package (0.154", 3.90mm width). The SA5534PSR has a wider package body. Both carry ROHS3 compliance and Last Time Buy status.

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

A: The AD847ARZ from Analog Devices Inc. offers the best long-term availability with active product status. The OPA604AU and OPA604AU/2K5 from Texas Instruments also carry active status. Parts with Last Time Buy status (NE5534ADR, SA5534ADR, SA5534D, SA5534PSR) have limited production windows and will eventually become unavailable. Obsolete parts (AD847AR, NE5534AD, NE5534D, SA5534AD) are no longer manufactured.

Q: Are all substitute parts ROHS3 compliant?

A: No. The AD847AR (original part) has no RoHS status listed. The AD847ARZ is ROHS3 compliant. Among substitutes, NE5534AD and NE5534D are not ROHS3 compliant. SA5534AD is RoHS non-compliant. The following parts are ROHS3 compliant: NE5534ADR, OPA604AU, OPA604AU/2K5, SA5534ADR, SA5534D, and SA5534PSR. For applications requiring RoHS compliance, select from the ROHS3-compliant alternatives.

Q: What is the moisture sensitivity level (MSL) difference between parts?

A: The AD847AR, AD847ARZ, NE5534 series, SA5534AD, and SA5534PSR all carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The NE5534ADR and SA5534ADR carry MSL 2 (1 Year), requiring storage in controlled humidity conditions for up to one year. The OPA604AU and OPA604AU/2K5 carry MSL 3 (168 Hours), requiring more stringent moisture control. For applications with extended storage or high-humidity environments, MSL 1 parts are preferred.

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