LM7372MRX Equivalent & Substitute Parts

Part Overview

The LM7372MRX is a voltage feedback operational amplifier featuring dual circuits in an 8-PowerSOIC package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The LM7372MRX delivers high-speed performance with a 120 MHz gain bandwidth product and 3000 V/µs slew rate, designed for applications requiring fast signal processing in a compact surface-mount form factor. Identifying equivalent and substitute parts is necessary due to product discontinuation and to ensure design flexibility for procurement and long-term supply chain management.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Voltage Feedback	—
Number of Circuits	2	—
Slew Rate	3000	V/µs
Gain Bandwidth Product	120	MHz
-3dB Bandwidth	220	MHz
Current - Input Bias	2.7	µA
Voltage - Input Offset	2	mV
Current - Supply (x2 Channels)	13	mA
Current - Output / Channel	260	mA
Voltage - Supply Span (Min)	9	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	8-PowerSOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	3 (168 Hours)	—

Substitute Part Grouping Explanation

Substitution of the LM7372MRX is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Amplifier Type: Voltage Feedback
Number of Circuits: 2
Slew Rate: 3000 V/µs (minimum acceptable performance)
Gain Bandwidth Product: 120 MHz (minimum acceptable performance)
Voltage Supply Range: 9 V to 36 V (must encompass or match)
Operating Temperature: -40°C to 85°C (minimum)
Package Compatibility: 8-pin surface-mount configuration
RoHS3 Compliance: Required

Packaging Equivalence: The LM7372MRX is supplied in Tape & Reel (TR) packaging. Parametric equivalents with alternative packaging formats (Cut Tape & Digi-Reel®) maintain identical electrical specifications and are considered direct substitutes for design purposes. Packaging differences affect procurement and handling only, not electrical performance.

Substitute Classification:

Parametric Equivalent (Same Manufacturer): LM7372MRX/NOPB maintains 100% electrical and functional equivalence with identical specifications. Packaging format differs (Cut Tape & Digi-Reel® vs. Tape & Reel).
Performance-Reduced Substitutes (Analog Devices): AD826ARZ, AD826ARZ-REEL, and AD826ARZ-REEL7 operate as voltage feedback dual amplifiers with reduced slew rate (350 V/µs) and lower gain bandwidth product (50 MHz). These are suitable only for applications where the LM7372MRX performance specifications exceed design requirements.
Performance-Enhanced Substitutes (Analog Devices): AD828ARZ and AD828ARZ-REEL7 provide enhanced bandwidth (130 MHz) and slew rate (450 V/µs) while maintaining dual-circuit voltage feedback topology. These exceed LM7372MRX specifications and are suitable for higher-performance applications.
Incompatible Alternatives: ADTL082ARZ and BA10358F-E1 employ different amplifier topologies (J-FET and General Purpose, respectively) with significantly reduced performance metrics. These do not qualify as direct substitutes for the LM7372MRX.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Circuits	Slew Rate (V/µs)	GBW (MHz)	-3dB BW (MHz)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
LM7372MRX	Texas Instruments	Voltage Feedback	2	3000	120	220	9	36	-40 to 85	8-PowerSOIC	Last Time Buy
LM7372MRX/NOPB	Texas Instruments	Voltage Feedback	2	3000	120	220	9	36	-40 to 85	8-PowerSOIC	Active
AD826ARZ	Analog Devices Inc.	Voltage Feedback	2	350	50	50	5	36	-40 to 85	8-SOIC	Active
AD826ARZ-REEL	Analog Devices Inc.	Voltage Feedback	2	350	50	50	5	36	-40 to 85	8-SOIC	Active
AD826ARZ-REEL7	Analog Devices Inc.	Voltage Feedback	2	350	50	50	5	36	-40 to 85	8-SOIC	Active
AD828ARZ	Analog Devices Inc.	Voltage Feedback	2	450	—	130	5	36	-40 to 85	8-SOIC	Active
AD828ARZ-REEL7	Analog Devices Inc.	Voltage Feedback	2	450	—	130	5	36	-40 to 85	8-SOIC	Active

Engineering Selection Recommendations

Recommended Primary Substitute:

LM7372MRX/NOPB is the direct parametric equivalent with Active product status. This part maintains 100% electrical and functional compatibility with the original LM7372MRX. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Both parts are ROHS3 compliant and carry identical electrical specifications. Selection of LM7372MRX/NOPB eliminates design risk and ensures seamless integration into existing applications.

Alternative Substitutes Based on Application Requirements:

For applications where the LM7372MRX performance specifications exceed design requirements, the AD826ARZ family (AD826ARZ, AD826ARZ-REEL, AD826ARZ-REEL7) provides Active product status with reduced power consumption (6.6 mA supply current versus 13 mA). These parts operate as voltage feedback dual amplifiers with lower slew rate and bandwidth. Electrical compatibility is maintained within the reduced performance envelope. All variants are ROHS3 compliant with MSL 1 rating.

For applications requiring enhanced performance beyond LM7372MRX specifications, the AD828ARZ family (AD828ARZ, AD828ARZ-REEL7) delivers higher bandwidth (130 MHz) and slew rate (450 V/µs). These parts maintain voltage feedback topology with dual circuits and Active product status. ROHS3 compliance and MSL 1 rating apply.

Non-Recommended Alternatives:

ADTL082ARZ and BA10358F-E1 employ different amplifier topologies and do not meet the electrical parameter requirements for direct substitution. These parts are not suitable replacements for the LM7372MRX.

Frequently Asked Questions (FAQ)

Q: Can LM7372MRX/NOPB be used as a direct replacement for LM7372MRX?

A: Yes. LM7372MRX/NOPB is a parametric equivalent with identical electrical specifications, operating temperature range, supply voltage range, and functional performance. The difference is packaging format only. Both parts are ROHS3 compliant and suitable for direct substitution in design and manufacturing.

Q: What is the difference between the LM7372MRX and AD826ARZ?

A: The LM7372MRX delivers 3000 V/µs slew rate and 120 MHz gain bandwidth product. The AD826ARZ provides 350 V/µs slew rate and 50 MHz gain bandwidth product. The AD826ARZ is suitable only for applications where lower speed performance is acceptable. Both are voltage feedback dual amplifiers with ROHS3 compliance and -40°C to 85°C operating range.

Q: Are the AD826ARZ variants (REEL, REEL7) electrically identical?

A: Yes. AD826ARZ, AD826ARZ-REEL, and AD826ARZ-REEL7 are electrically identical. Differences are packaging and tape format only. All three variants maintain the same electrical specifications and are interchangeable for design purposes.

Q: Can AD828ARZ replace LM7372MRX in all applications?

A: AD828ARZ exceeds LM7372MRX performance specifications with 450 V/µs slew rate and 130 MHz bandwidth. It is suitable for applications where LM7372MRX performance is adequate or where higher performance is beneficial. Both maintain voltage feedback topology, dual circuits, and compatible supply voltage ranges. Verification of circuit design is recommended to confirm compatibility with enhanced performance characteristics.

Q: What does "Last Time Buy" status mean for LM7372MRX?

A: Last Time Buy indicates the manufacturer has discontinued production. Existing inventory is available but will not be replenished. LM7372MRX/NOPB maintains Active status and is the recommended long-term substitute for new designs and ongoing production.

Q: Are all recommended substitutes ROHS3 compliant?

A: Yes. LM7372MRX/NOPB, AD826ARZ family, and AD828ARZ family are all ROHS3 compliant. Compliance status is identical across all recommended substitutes.

Q: What is the significance of MSL rating differences?

A: LM7372MRX carries MSL 3 (168 Hours), indicating moisture sensitivity requiring controlled storage and handling. AD826ARZ and AD828ARZ families carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. MSL 1 rated parts offer simplified storage and handling procedures.

Q: Can ADTL082ARZ be used as a substitute?

A: No. ADTL082ARZ employs J-FET amplifier topology with 5 MHz gain bandwidth product and 20 V/µs slew rate. These specifications do not meet the voltage feedback, high-speed performance requirements of the LM7372MRX. ADTL082ARZ is not a suitable substitute.

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