LM7322MA/NOPB Equivalent & Substitute Parts

Part Overview

The LM7322MA/NOPB is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-SOIC surface-mount package. This device delivers rail-to-rail output capability with a 20 MHz gain-bandwidth product and operates across a 2.5 V to 32 V supply range. The part is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	18	V/µs
Gain Bandwidth Product	20	MHz
Current - Input Bias	1.1	µA
Voltage - Input Offset	700	µV
Current - Supply (x2 Channels)	2.5	mA
Current - Output / Channel	100	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	32	V
Operating Temperature	-40 to 125	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the LM7322MA/NOPB are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution logic is determined by the following parameters:

Critical Matching Parameters:

Dual-circuit (2) general-purpose operational amplifier architecture
Rail-to-rail output capability
8-SOIC surface-mount package with 0.154" (3.90mm) width
Supply voltage range compatibility (minimum 2.5 V, maximum 32 V)
Operating temperature range support

Performance Tier Classification:

Substitutes are organized into two distinct performance categories based on slew rate and gain-bandwidth product specifications:

Tier 1 (Direct Performance Match): LM7322MAX/NOPB from Texas Instruments maintains identical electrical specifications (18 V/µs slew rate, 20 MHz gain-bandwidth product) with the primary difference being packaging format (Cut Tape & Digi-Reel® versus Tube). This part is Active status and represents the preferred direct substitute.

Tier 2 (Reduced Performance, Extended Compatibility): LT1495 series devices from Analog Devices Inc. (LT1495CS8#PBF, LT1495CS8#TRPBF, LT1495HS8, LT1495HS8#PBF, LT1495HS8#TRPBF, LT1495IS8#PBF, LT1495IS8#TR, LT1495IS8#TRPBF) and LT1498 series (LT1498CS8#PBF) provide functional substitution with reduced slew rate (0.001 V/µs to 6 V/µs) and lower gain-bandwidth product (2.7 kHz to 10.5 MHz). These parts maintain rail-to-rail output, dual-circuit configuration, 8-SOIC packaging, and extended supply voltage range (2.2 V to 36 V). Temperature grade variants (C, I, H) and packaging formats (Tube, Cut Tape, Tape & Reel) provide application-specific selection options.

Parameter Comparison

Parameter	LM7322MA/NOPB	LM7322MAX/NOPB	LT1495CS8#PBF	LT1495HS8#PBF	LT1495IS8#PBF	LT1498CS8#PBF
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	18	18	0.001	0.001	0.001	6
Gain Bandwidth Product (MHz)	20	20	0.0027	0.0027	0.0027	10.5
Current - Input Bias (µA)	1.1	1.1	0.00025	0.00025	0.000025	0.00025
Voltage - Input Offset (µV)	700	700	200	200	200	200
Current - Supply (mA, x2 Channels)	2.5	2.5	0.001	0.001	0.001	1.8
Current - Output / Channel (mA)	100	100	1.5	1.5	1.5	30
Voltage - Supply Span Min (V)	2.5	2.5	2.2	2.2	2.2	2.2
Voltage - Supply Span Max (V)	32	32	36	36	36	36
Operating Temperature (°C)	-40 to 125	-40 to 125	0 to 70	-40 to 125	-40 to 85	0 to 70
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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Last Time Buy	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitute (Tier 1):

LM7322MAX/NOPB is the recommended primary substitute for LM7322MA/NOPB. This Texas Instruments device maintains identical electrical performance specifications (18 V/µs slew rate, 20 MHz gain-bandwidth product, 1.1 µA input bias current, 700 µV input offset voltage) and operates across the same supply voltage range (-40°C to 125°C). The device is Active status, ensuring long-term availability and supply chain continuity. The only distinction is packaging format: LM7322MAX/NOPB is supplied in Cut Tape & Digi-Reel® format with significantly higher inventory (25,200 pcs) compared to the Tube packaging of the original part. Both variants are ROHS3 compliant with MSL 1 rating and identical ECCN/HTSUS classifications.

Secondary Substitutes (Tier 2):

LT1495 series devices from Analog Devices Inc. provide functional substitution when performance reduction is acceptable. These parts maintain dual-circuit, rail-to-rail, 8-SOIC architecture with extended supply voltage range (2.2 V to 36 V). Temperature grade selection determines operating range compatibility:

LT1495HS8#PBF and LT1495HS8#TRPBF: Support full industrial temperature range (-40°C to 125°C), matching the original part's thermal specification. These variants are suitable for applications requiring extended temperature operation.
LT1495IS8#PBF and LT1495IS8#TRPBF: Support -40°C to 85°C operating range, appropriate for commercial-grade applications with reduced upper temperature limit.
LT1495CS8#PBF and LT1495CS8#TRPBF: Support 0°C to 70°C operating range, suitable for controlled-environment applications.

LT1498CS8#PBF provides intermediate performance (6 V/µs slew rate, 10.5 MHz gain-bandwidth product) with reduced output current capability (30 mA per channel versus 100 mA) and lower supply current consumption (1.8 mA versus 2.5 mA). This variant is appropriate for power-sensitive applications where the original part's performance exceeds system requirements.

All substitute parts are Active status, ROHS3 compliant, and carry MSL 1 rating. Selection between packaging formats (Tube, Cut Tape, Tape & Reel) depends on assembly process requirements and inventory management practices.

Frequently Asked Questions (FAQ)

Q1: Can LM7322MAX/NOPB directly replace LM7322MA/NOPB in existing designs?

A: Yes. LM7322MAX/NOPB is a direct electrical equivalent with identical performance specifications. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tube). Both parts operate across -40°C to 125°C, deliver 18 V/µs slew rate and 20 MHz gain-bandwidth product, and are ROHS3 compliant. No circuit modifications are required. Verify that your assembly process accommodates the different packaging format.

Q2: What are the key performance differences between LM7322MA/NOPB and LT1495 series substitutes?

A: LT1495 series devices have significantly reduced slew rate (0.001 V/µs versus 18 V/µs) and gain-bandwidth product (2.7 kHz versus 20 MHz). Input bias current is substantially lower (25 pA to 250 pA versus 1.1 µA), and output current per channel is reduced (1.5 mA versus 100 mA). These differences make LT1495 suitable only for low-frequency, low-current applications. High-speed signal processing or high-current output applications require LM7322MAX/NOPB or LT1498 series.

Q3: Which LT1495 temperature grade should I select?

A: Temperature grade selection depends on application operating environment. LT1495HS8 variants (-40°C to 125°C) match the original part's full industrial range and are recommended for designs requiring extended temperature operation. LT1495IS8 variants (-40°C to 85°C) are suitable for commercial applications with reduced upper temperature limit. LT1495CS8 variants (0°C to 70°C) are appropriate only for controlled-environment applications. Verify your system's thermal requirements before selection.

Q4: Is LT1498CS8#PBF a suitable substitute for high-current applications?

A: LT1498CS8#PBF provides intermediate performance with 6 V/µs slew rate and 10.5 MHz gain-bandwidth product, but output current is limited to 30 mA per channel versus 100 mA for the original part. This device is suitable for applications requiring moderate speed and current capability. For applications demanding the original part's full 100 mA output current, LM7322MAX/NOPB is the appropriate choice.

Q5: Are all substitute parts compatible with the 8-SOIC package footprint?

A: Yes. All substitute parts use 8-SOIC packaging with 0.154" (3.90mm) width, matching the original LM7322MA/NOPB footprint. PCB layout and component placement require no modification. Verify that your assembly process and solder reflow profile are compatible with the specific packaging format (Tube, Cut Tape, or Tape & Reel) selected for procurement.

Q6: What is the supply voltage compatibility range for substitute parts?

A: LM7322MA/NOPB and LM7322MAX/NOPB operate across 2.5 V to 32 V. LT1495 and LT1498 series extend the minimum supply voltage to 2.2 V and maximum to 36 V, providing broader compatibility with diverse power supply architectures. Verify that your circuit design operates within the selected substitute part's specified supply voltage range.

Q7: Do all substitute parts maintain ROHS3 compliance and MSL 1 rating?

A: Yes. All listed substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental and regulatory status. No additional handling or storage procedures are required during assembly or deployment.

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