LM201ADG Equivalent & Substitute Parts

Part Overview

The LM201ADG is a general-purpose operational amplifier manufactured by onsemi in 8-SOIC surface mount packaging. This device is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design requirements and production continuity. The LM201ADG operates across a wide supply voltage range of 10V to 44V with a slew rate of 0.5V/µs and 1 MHz gain bandwidth product, making it suitable for general-purpose amplification applications requiring moderate bandwidth and low power consumption.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Slew Rate	0.5	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	30	nA
Voltage - Input Offset	700	µV
Current - Supply	1.8	mA
Voltage - Supply Span (Min)	10	V
Voltage - Supply Span (Max)	44	V
Operating Temperature	-25 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the LM201ADG is determined by electrical and mechanical compatibility across the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: General Purpose
Number of Circuits: 1
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Voltage - Supply Span: Minimum 10V, Maximum 44V (or compatible range)
Slew Rate: 0.5V/µs or greater
Gain Bandwidth Product: 1 MHz or greater

Direct Equivalents maintain identical or superior electrical performance within the specified supply voltage range and package footprint. The LM201ADT from STMicroelectronics is a direct equivalent, offering active product status with identical packaging and electrical specifications.

Functional Substitutes provide general-purpose amplification in the same package but with enhanced performance characteristics (higher slew rate, higher bandwidth, or improved input specifications). These include the LM318 series devices from Texas Instruments, which offer 70V/µs slew rate and 15 MHz bandwidth while maintaining 8-SOIC packaging and compatible supply voltage ranges.

Limited Compatibility Substitutes include the AD548JRZ series from Analog Devices, which operates within a reduced supply voltage range (9V to 36V) compared to the LM201ADG maximum of 44V, and the INA154UA, which is a differential amplifier rather than general-purpose, requiring circuit topology verification.

Parameter Comparison

Parameter	LM201ADG (Main)	LM201ADT	AD548JRZ	LM318MX/NOPB	LM318DR	INA154UA
Manufacturer	onsemi	STMicroelectronics	Analog Devices Inc.	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	Differential
Number of Circuits	1	1	1	1	1	1
Slew Rate (V/µs)	0.5	0.5	1.8	70	70	14
Gain Bandwidth Product (MHz)	1	1	1	15	15	—
Current - Input Bias (nA)	30	25	0.05	150	150	—
Voltage - Input Offset (µV)	700	700	750	4000	4000	100
Current - Supply (mA)	1.8	1.8	0.17	5	5	2.4
Voltage - Supply Span Min (V)	10	10	9	10	10	8
Voltage - Supply Span Max (V)	44	44	36	40	40	36
Operating Temperature (°C)	-25 to 85	-40 to 105	0 to 70	-25 to 85	0 to 70	-40 to 85
Package / Case	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

LM201ADT (STMicroelectronics) is the primary direct equivalent for LM201ADG replacement. This device maintains identical electrical specifications including 0.5V/µs slew rate, 1 MHz gain bandwidth product, and 1.8mA supply current. The LM201ADT offers active product status with ROHS3 compliance and an extended operating temperature range (-40°C to 105°C) compared to the original part. Pinout and package footprint are identical, enabling direct substitution without circuit modification. This part is recommended for applications requiring exact electrical performance matching.

LM318MX/NOPB and LM318DR (Texas Instruments) are functional substitutes suitable for applications where enhanced performance is acceptable. These devices provide 70V/µs slew rate and 15 MHz bandwidth, representing significant performance improvement over the LM201ADG. Both maintain 8-SOIC packaging and compatible supply voltage ranges (10V to 40V). The LM318MX/NOPB is available in Cut Tape & Digi-Reel packaging with 12,568 units in stock, while LM318DR is available in the same packaging with 6,235 units in stock. These substitutes are appropriate for designs where higher bandwidth and faster slew rate provide system benefits.

AD548JRZ (Analog Devices Inc.) operates within a reduced maximum supply voltage of 36V, which is below the LM201ADG specification of 44V. This device exhibits superior input bias current (50 pA) and higher slew rate (1.8V/µs) but is limited to 0°C to 70°C operating temperature. Substitution is valid only for applications operating within the AD548JRZ supply voltage and temperature constraints.

INA154UA (Texas Instruments) is a differential amplifier rather than a general-purpose amplifier, requiring circuit topology verification before substitution. While it shares the 8-SOIC package and offers superior input offset voltage (100 µV), its functional architecture differs from the LM201ADG. This device is not recommended as a direct substitute without comprehensive circuit redesign.

LM318PSR (Texas Instruments) uses an 8-SO package (0.209", 5.30mm width) rather than the 8-SOIC package (0.154", 3.90mm width) of the LM201ADG. This package difference prevents direct PCB substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the LM201ADT be used as a direct replacement for the LM201ADG?

A: Yes. The LM201ADT is a direct equivalent with identical electrical specifications, package footprint, and pinout. Both devices are single-circuit general-purpose amplifiers in 8-SOIC packaging with 0.5V/µs slew rate and 1 MHz gain bandwidth product. The LM201ADT offers active product status and extended temperature range, making it the recommended replacement.

Q: What is the primary difference between the LM201ADG and LM318 series substitutes?

A: The LM318 series (LM318MX/NOPB, LM318DR, LM318M/NOPB, LM318D) provides significantly higher performance with 70V/µs slew rate and 15 MHz bandwidth compared to the LM201ADG's 0.5V/µs and 1 MHz specifications. Both maintain 8-SOIC packaging and compatible supply voltage ranges. The LM318 series is suitable for applications requiring faster transient response and higher bandwidth.

Q: Are there supply voltage limitations when substituting with AD548JRZ?

A: Yes. The AD548JRZ operates with a maximum supply voltage of 36V, while the LM201ADG supports up to 44V. Substitution is valid only for applications operating within the 9V to 36V supply range. Applications requiring the full 44V maximum supply voltage cannot use the AD548JRZ.

Q: Why is the INA154UA not recommended as a substitute?

A: The INA154UA is a differential amplifier, not a general-purpose amplifier. Its functional architecture and circuit topology differ fundamentally from the LM201ADG. While it shares the 8-SOIC package, substitution requires complete circuit redesign and is not a direct replacement.

Q: What packaging options are available for LM318 substitutes?

A: The LM318 series is available in multiple packaging formats. LM318MX/NOPB and LM318DR are supplied in Cut Tape & Digi-Reel packaging. LM318M/NOPB is supplied in Tube packaging. LM318D is supplied in Tube packaging. LM318PSR uses an 8-SO package (0.209" width) rather than 8-SOIC (0.154" width), preventing direct PCB substitution. All other LM318 variants use the standard 8-SOIC (0.154" width) package compatible with LM201ADG footprints.

Q: What is the moisture sensitivity level difference between LM201ADT and INA154UA?

A: The LM201ADT has Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related storage restrictions. The INA154UA has Moisture Sensitivity Level 3 (168 Hours), requiring controlled storage conditions and bake-out procedures before soldering. This difference affects component handling, storage, and manufacturing processes.

Q: Can the LM318PSR be used as a direct PCB substitute?

A: No. The LM318PSR uses an 8-SO package with 0.209" width, while the LM201ADG uses an 8-SOIC package with 0.154" width. The different package dimensions prevent direct PCB substitution without layout modification. Other LM318 variants (LM318MX/NOPB, LM318DR, LM318M/NOPB, LM318D) use the compatible 8-SOIC package.

Q: What compliance certifications should be verified for substitution?

A: The LM201ADT, AD548JRZ, and all LM318 variants are ROHS3 compliant. All listed substitutes have REACH Unaffected status and EAR99 ECCN classification, matching the original LM201ADG regulatory profile. The LM218IDRG4Q1 includes AEC-Q100 automotive qualification, which is not present in the LM201ADG specification.

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