AD8011AR Equivalent & Substitute Parts

Part Overview

The AD8011AR is a current feedback amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This device is classified as obsolete, though 1463 pieces remain in stock as new original inventory. The AD8011AR delivers high-speed amplification with a 3500 V/µs slew rate and 400 MHz bandwidth, making it suitable for applications requiring fast transient response and wide bandwidth performance.

Due to its obsolete status, identifying equivalent and substitute parts is necessary for design continuity, long-term supply chain planning, and new design implementations. Substitute parts must maintain compatibility across critical electrical parameters including slew rate, bandwidth, supply voltage range, and output current capability while accommodating the 8-SOIC package form factor.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Current Feedback	—
Number of Circuits	1	—
Slew Rate	3500	V/µs
-3dB Bandwidth	400	MHz
Current - Input Bias	5	µA
Voltage - Input Offset	2	mV
Current - Supply	1.3	mA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	12	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

Substitute parts for the AD8011AR are categorized based on strict adherence to the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: Current Feedback (maintains signal processing architecture)
Number of Circuits: 1 (single-channel configuration)
Package / Case: 8-SOIC form factor (ensures mechanical and electrical compatibility)
Mounting Type: Surface Mount (PCB assembly compatibility)
Slew Rate: ≥ 3500 V/µs (maintains transient response performance)
-3dB Bandwidth: ≥ 400 MHz (preserves frequency response capability)
Voltage - Supply Span: Overlaps with 3 V to 12 V range (operational voltage compatibility)
Current - Output / Channel: ≥ 30 mA (load driving capability)

Secondary Consideration:

Product Status: Active status preferred for long-term availability, though obsolete status does not disqualify a substitute if electrical parameters align

Substitutes are presented in two categories: direct equivalents (identical electrical specifications with different packaging) and similar alternatives (matching core functionality with acceptable parameter variations).

Parameter Comparison

Parameter	AD8011AR	AD8011ARZ	LMH6714MA/NOPB	LMH6723MA/NOPB	LMC6494BEMX/NOPB	OPA197IDR
Manufacturer	Analog Devices	Analog Devices	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	Current Feedback	Current Feedback	Current Feedback	Current Feedback	CMOS	General Purpose
Number of Circuits	1	1	1	1	4	1
Slew Rate (V/µs)	3500	3500	1800	600	1.3	20
-3dB Bandwidth (MHz)	400	400	400	370	1.5	10
Current - Input Bias (µA)	5	5	—	2	0.15 pA	5 pA
Voltage - Input Offset (mV)	2	2	—	1	110 µV	25 µV
Current - Supply (mA)	1.3	1.3	5.6	1	2.6 (x4)	1
Current - Output / Channel (mA)	30	30	70	110	30	—
Voltage - Supply Span (Min)	3 V	3 V	8 V / ±4 V	4.5 V	2.5 V	4.5 V
Voltage - Supply Span (Max)	12 V	12 V	12.5 V / ±6.25 V	12 V	15.5 V	36 V
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 125	-40 to 125
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	14-SOIC	8-SOIC
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent (Recommended for Immediate Replacement):

The AD8011ARZ is the direct functional equivalent of the AD8011AR. Both devices share identical electrical specifications including 3500 V/µs slew rate, 400 MHz bandwidth, and 8-SOIC packaging. The AD8011ARZ carries Active product status and ROHS3 compliance, providing superior long-term supply chain assurance compared to the obsolete AD8011AR. The only difference is packaging format (Tube versus original specification), which does not affect electrical performance or PCB assembly compatibility. This part is the primary recommendation for direct replacement.

Current Feedback Alternatives (Matched Bandwidth, Reduced Slew Rate):

The LMH6714MA/NOPB and LMH6714MAX/NOPB maintain the 400 MHz bandwidth specification and current feedback architecture in 8-SOIC packages. These Texas Instruments devices deliver 1800 V/µs slew rate, which is lower than the AD8011AR but remains suitable for applications where the full 3500 V/µs performance is not critical. Both variants are Active status with ROHS3 compliance. The LMH6714MAX/NOPB is supplied in Tape & Reel format for automated assembly.

The LMH6723MA/NOPB and LMH6723MAX/NOPB provide 370 MHz bandwidth and 600 V/µs slew rate in 8-SOIC packages. These devices are suitable for applications with relaxed bandwidth and slew rate requirements. Both are Active status with ROHS3 compliance. The LMH6723MAX/NOPB is supplied in Tape & Reel format.

Alternative Amplifier Types (Functional Substitution Only):

The LMC6494BEMX/NOPB is a CMOS amplifier with 4 circuits in a 14-SOIC package. This device does not meet the 8-SOIC package requirement and introduces a different amplifier architecture (CMOS versus current feedback). Substitution requires circuit redesign and is not recommended for direct replacement.

The OPA197IDR is a general-purpose amplifier with rail-to-rail output in 8-SOIC packaging. This device does not meet the current feedback architecture requirement and delivers significantly lower slew rate (20 V/µs) and bandwidth (10 MHz). Substitution requires substantial circuit redesign and is not recommended for direct replacement.

Compliance and Availability:

All recommended substitute parts carry ROHS3 compliance and REACH Unaffected status, meeting modern environmental and regulatory requirements. The AD8011ARZ, LMH6714 series, and LMH6723 series all maintain Active product status, ensuring continued availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the AD8011ARZ be used as a direct replacement for the AD8011AR?

A: Yes. The AD8011ARZ is electrically identical to the AD8011AR across all specified parameters including slew rate, bandwidth, supply voltage range, and output current. The only difference is packaging format (Tube versus original). Both devices are housed in 8-SOIC packages with identical pinouts and electrical characteristics. The AD8011ARZ is preferred due to its Active product status.

Q: What is the primary difference between the AD8011AR and the LMH6714MA/NOPB?

A: Both devices are current feedback amplifiers in 8-SOIC packages with 400 MHz bandwidth. The primary difference is slew rate: the AD8011AR delivers 3500 V/µs while the LMH6714MA/NOPB delivers 1800 V/µs. Applications requiring the full 3500 V/µs slew rate performance cannot use the LMH6714MA/NOPB as a substitute. Applications with lower slew rate requirements can accommodate this alternative.

Q: Why is the LMC6494BEMX/NOPB not recommended as a substitute?

A: The LMC6494BEMX/NOPB uses a different package (14-SOIC versus 8-SOIC) and employs CMOS amplifier architecture rather than current feedback. This device is not pin-compatible and requires circuit redesign. Additionally, its 1.5 MHz bandwidth and 1.3 V/µs slew rate are significantly lower than the AD8011AR specification.

Q: Is the OPA197IDR suitable for replacing the AD8011AR?

A: No. The OPA197IDR is a general-purpose amplifier, not a current feedback amplifier. It delivers 20 V/µs slew rate and 10 MHz bandwidth, both substantially lower than the AD8011AR. While both devices share 8-SOIC packaging, the fundamental amplifier architecture difference requires complete circuit redesign.

Q: What packaging options are available for current feedback substitutes?

A: The LMH6714 and LMH6723 series are available in two packaging formats: Tube (MA variant) and Tape & Reel (MAX variant). Both formats use identical 8-SOIC packages with the same pinout and electrical specifications. Tape & Reel format is optimized for automated assembly, while Tube format is suitable for manual assembly or lower-volume applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts (AD8011ARZ, LMH6714MA/NOPB, LMH6714MAX/NOPB, LMH6723MA/NOPB, LMH6723MAX/NOPB) carry ROHS3 compliance certification. The original AD8011AR does not specify RoHS status due to its obsolete classification.

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

A: The AD8011ARZ, LMH6714 series, and LMH6723 series all operate from -40°C to 85°C, matching the AD8011AR specification. The OPA197IDR and LMC6494BEMX/NOPB extend to -40°C to 125°C, providing wider temperature range capability if required by the application.

Q: Can multiple LMC6494BEMX/NOPB circuits be used to replace a single AD8011AR?

A: No. The LMC6494BEMX/NOPB contains 4 circuits in a 14-SOIC package, but each circuit is a CMOS amplifier with fundamentally different electrical characteristics. Using multiple circuits does not create a functional equivalent to the current feedback architecture of the AD8011AR.

Q: What supply voltage range is compatible with all substitute parts?

A: The overlapping supply voltage range across all current feedback substitutes (AD8011ARZ, LMH6714 series, LMH6723 series) is 4.5 V to 12 V. The original AD8011AR operates from 3 V to 12 V. Applications requiring 3 V to 4.5 V operation must use the AD8011ARZ or source the original AD8011AR from remaining inventory.

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