LM7372MR Equivalent & Substitute Parts

Part Overview

The LM7372MR is a voltage feedback operational amplifier featuring dual circuits in an 8-PowerSOIC surface mount package. This device is classified as obsolete, though inventory remains available. The LM7372MR delivers high-speed performance with a 3000V/µs slew rate and 120 MHz gain bandwidth product, suitable for applications requiring fast signal processing and wide bandwidth operation. Due to its obsolete status, equivalent and substitute parts are necessary for new designs and long-term supply chain continuity.

Key Parameters

Parameter	Value
Amplifier Type	Voltage Feedback
Number of Circuits	2
Slew Rate	3000V/µs
Gain Bandwidth Product	120 MHz
-3dB Bandwidth	220 MHz
Current - Input Bias	2.7 µA
Voltage - Input Offset	2 mV
Current - Supply	13mA (x2 Channels)
Current - Output / Channel	260 mA
Voltage - Supply Span (Min)	9 V
Voltage - Supply Span (Max)	36 V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	8-PowerSOIC (0.154", 3.90mm Width)
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the LM7372MR is determined by the following critical parameters: amplifier type (voltage feedback), number of circuits (2), surface mount packaging, and electrical performance specifications including slew rate, gain bandwidth product, supply voltage range, and output current capability.

The substitute parts are grouped into two categories:

Direct Equivalent (Same Manufacturer): The LM7372MR/NOPB is a direct equivalent manufactured by Texas Instruments with identical electrical specifications and packaging. This part differs only in product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant).

Functional Alternatives (Different Manufacturers): The Analog Devices AD826 and AD828 series, along with the Rohm Semiconductor BA10358F-E1, provide voltage feedback amplifier functionality with dual circuits in 8-SOIC packaging. These alternatives operate within the supply voltage range of the LM7372MR and maintain surface mount compatibility. However, these alternatives exhibit reduced performance in slew rate, gain bandwidth product, and -3dB bandwidth compared to the LM7372MR.

Parameter Comparison

Parameter	LM7372MR	LM7372MR/NOPB	AD826ARZ	AD828ARZ	ADTL082ARZ	BA10358F-E1
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Rohm Semiconductor
Amplifier Type	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback	J-FET	General Purpose
Number of Circuits	2	2	2	2	2	2
Slew Rate	3000V/µs	3000V/µs	350V/µs	450V/µs	20V/µs	0.2V/µs
Gain Bandwidth Product	120 MHz	120 MHz	50 MHz	Not specified	5 MHz	500 kHz
-3dB Bandwidth	220 MHz	220 MHz	50 MHz	130 MHz	5 MHz	Not specified
Current - Input Bias	2.7 µA	2.7 µA	3.3 µA	Not specified	2 pA	45 nA
Voltage - Input Offset	2 mV	2 mV	500 µV	Not specified	1.5 mV	2 mV
Current - Supply	13mA (x2 Channels)	13mA (x2 Channels)	6.6mA (x2 Channels)	14 mA	1.2mA (x2 Channels)	700µA
Current - Output / Channel	260 mA	260 mA	50 mA	50 mA	27 mA	20 mA
Voltage - Supply Span (Min)	9 V	9 V	5 V	5V / ±2.5V	8 V	3 V
Voltage - Supply Span (Max)	36 V	36 V	36 V	36V / ±18V	36 V	32 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-PowerSOIC (0.154", 3.90mm Width)	8-PowerSOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.173", 4.40mm Width)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

LM7372MR/NOPB is the primary direct equivalent for the LM7372MR. This part maintains identical electrical specifications, package dimensions, and pin configuration. The LM7372MR/NOPB is active in production and ROHS3 compliant, addressing the obsolescence and regulatory compliance limitations of the original LM7372MR. This part is suitable for direct replacement in existing designs without circuit modification.

AD828ARZ and AD828ARZ-REEL7 provide the closest performance match among Analog Devices alternatives, with a -3dB bandwidth of 130 MHz and slew rate of 450V/µs. These parts operate within the supply voltage range of the LM7372MR and are ROHS3 compliant with unlimited moisture sensitivity. However, these parts deliver reduced slew rate and bandwidth compared to the LM7372MR. The AD828 series is suitable for applications where the reduced performance specifications are acceptable.

AD826ARZ, AD826ARZ-REEL, and AD826ARZ-REEL7 offer lower performance specifications with 50 MHz gain bandwidth product and 350V/µs slew rate. These parts are ROHS3 compliant with unlimited moisture sensitivity and operate within the supply voltage range. Selection of the AD826 series is appropriate only for applications with reduced bandwidth and slew rate requirements.

ADTL082ARZ, ADTL082ARZ-REEL, and ADTL082ARZ-REEL7 employ J-FET input architecture, delivering extremely low input bias current (2 pA) and reduced supply current (1.2mA per channel). However, these parts exhibit significantly reduced slew rate (20V/µs) and gain bandwidth product (5 MHz). The ADTL082 series is suitable for applications prioritizing low input bias current and low power consumption over high-speed performance.

BA10358F-E1 is a general-purpose amplifier with the lowest performance specifications among the alternatives, featuring 500 kHz gain bandwidth product and 0.2V/µs slew rate. This part is suitable only for low-frequency applications and is not recommended for high-speed signal processing applications.

All substitute parts listed are active in production and ROHS3 compliant, addressing regulatory compliance requirements. Selection should be based on application-specific performance requirements and the degree to which reduced bandwidth and slew rate specifications are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the LM7372MR/NOPB be used as a direct replacement for the LM7372MR?

A: Yes. The LM7372MR/NOPB is a direct equivalent with identical electrical specifications, pin configuration, and package dimensions. The primary differences are product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant). No circuit modifications are required.

Q: What are the key performance differences between the LM7372MR and the AD828ARZ?

A: The LM7372MR delivers 3000V/µs slew rate and 220 MHz -3dB bandwidth, while the AD828ARZ provides 450V/µs slew rate and 130 MHz -3dB bandwidth. The LM7372MR offers approximately 6.7 times faster slew rate and 1.7 times greater bandwidth. The AD828ARZ is suitable only for applications where these reduced performance specifications are acceptable.

Q: Are the package dimensions identical between the LM7372MR and substitute parts?

A: The LM7372MR uses an 8-PowerSOIC package (0.154", 3.90mm width). The AD826, AD828, and ADTL082 series use standard 8-SOIC packages (0.154", 3.90mm width), which are mechanically compatible. The BA10358F-E1 uses an 8-SOIC package with 0.173" (4.40mm) width, which may require PCB layout verification for compatibility.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference?

A: The LM7372MR has MSL 3 (168 hours), requiring controlled storage and handling conditions. All substitute parts have MSL 1 (unlimited), eliminating moisture sensitivity constraints. This simplifies inventory management and reduces handling requirements for substitute parts.

Q: Which substitute part is recommended for applications requiring high-speed performance?

A: The AD828ARZ series is the recommended substitute for high-speed applications among the alternatives listed. With 450V/µs slew rate and 130 MHz -3dB bandwidth, it provides the closest performance match to the LM7372MR, though still reduced compared to the original specification.

Q: Can the ADTL082ARZ be used in place of the LM7372MR?

A: The ADTL082ARZ is not suitable for direct replacement in high-speed applications. This J-FET input device delivers 20V/µs slew rate and 5 MHz gain bandwidth product, representing a significant performance reduction. The ADTL082ARZ is appropriate only for low-frequency, low-bias-current applications.

Q: What is the impact of reduced output current capability in substitute parts?

A: The LM7372MR delivers 260 mA output current per channel. The AD826 and AD828 series deliver 50 mA per channel, while the ADTL082 delivers 27 mA per channel. Applications requiring high output current must verify that substitute parts can deliver sufficient drive capability to the load impedance.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant. The original LM7372MR is RoHS non-compliant. For applications subject to RoHS requirements, the LM7372MR/NOPB or any of the Analog Devices or Rohm alternatives satisfy regulatory compliance.

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