LM7322MAX/NOPB Equivalent & Substitute Parts

Part Overview

The LM7322MAX/NOPB is a general-purpose operational amplifier manufactured by Texas Instruments, configured as a dual-circuit (2-channel) rail-to-rail output device in an 8-SOIC surface mount package. This IC is classified as Active product status and is ROHS3 compliant. The LM7322MAX/NOPB is suitable for applications requiring moderate bandwidth and slew rate performance within a compact form factor. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, design flexibility, or application-specific parameter requirements.

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 LM7322MAX/NOPB are identified based on the following electrical and mechanical compatibility criteria:

Primary Compatibility Requirements:

Dual-circuit (2-channel) configuration
Rail-to-rail output capability
8-SOIC surface mount package (0.154", 3.90mm Width)
Supply voltage range compatibility (minimum 2.5V, maximum 32V)
Operating temperature range coverage
ROHS3 compliance and MSL Level 1 rating

Substitution Logic: The LT1495 and LT1498 series from Analog Devices Inc. are identified as manufacturer-recommended substitutes. These devices maintain the same package footprint and dual-circuit architecture. However, electrical performance characteristics differ significantly:

LT1495 variants provide ultra-low input bias current (25-250 pA) and minimal supply current (1 µA per channel), suitable for low-power applications with relaxed bandwidth requirements (2.7 kHz gain-bandwidth product).
LT1498 variants deliver higher slew rate (6 V/µs) and gain-bandwidth product (10.5 MHz) with moderate input bias current (250 nA), positioned for applications requiring faster signal processing than LT1495 but lower performance than LM7322MAX/NOPB.

All substitute parts are available in multiple temperature grades (C, I, H) and packaging formats (Tube, Cut Tape & Digi-Reel, Tape & Reel), enabling selection based on application thermal requirements and procurement logistics.

Parameter Comparison

Parameter	LM7322MAX/NOPB	LT1495CS8#PBF	LT1495HS8#PBF	LT1495IS8#PBF	LT1498CS8#PBF	LT1498HS8#PBF	LT1498IS8#PBF
Manufacturer	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Number of Circuits	2	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	Rail-to-Rail
Slew Rate (V/µs)	18	0.001	0.001	0.001	6	6	6
Gain Bandwidth Product (MHz)	20	0.0027	0.0027	0.0027	10.5	10.5	10.5
Current - Input Bias (pA/nA/µA)	1.1 µA	250 pA	250 pA	25 pA	250 nA	250 nA	250 nA
Voltage - Input Offset (µV)	700	200	200	200	200	200	200
Current - Supply (mA, x2 Channels)	2.5	0.001	0.001	0.001	1.8	1.8	1.8
Current - Output / Channel (mA)	100	1.5	1.5	1.5	30	30	30
Voltage - Supply Span Min (V)	2.5	2.2	2.2	2.2	2.2	2.2	2.2
Voltage - Supply Span Max (V)	32	36	36	36	36	36	36
Operating Temperature (°C)	-40 to 125	0 to 70	-40 to 125	-40 to 85	0 to 70	-40 to 125	-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)	8-SOIC (0.154", 3.90mm)
RoHS Status	ROHS3 Compliant	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)	1 (Unlimited)

Engineering Selection Recommendations

LT1495 Series Selection (Ultra-Low Power Applications):

LT1495CS8#PBF / LT1495CS8#TRPBF: Commercial temperature grade (0°C to 70°C). Select for applications with relaxed thermal requirements and cost optimization. Available in Tube and Cut Tape & Digi-Reel packaging.
LT1495HS8#PBF: Industrial temperature grade (-40°C to 125°C). Matches the full operating temperature range of LM7322MAX/NOPB. Select when extended temperature operation is required with ultra-low power consumption priority.
LT1495IS8#PBF / LT1495IS8#TRPBF: Industrial temperature grade (-40°C to 85°C). Intermediate temperature coverage. Available in Tube and Tape & Reel packaging.

LT1498 Series Selection (Moderate-Performance Applications):

LT1498CS8#PBF / LT1498CS8#TRPBF: Commercial temperature grade (0°C to 70°C). Select for applications requiring higher slew rate (6 V/µs) and bandwidth (10.5 MHz) than LT1495 with commercial thermal limits. Available in Tube and Cut Tape & Digi-Reel packaging.
LT1498HS8#PBF: Industrial temperature grade (-40°C to 125°C). Provides full temperature range coverage matching LM7322MAX/NOPB with 6 V/µs slew rate and 10.5 MHz bandwidth. Select for high-temperature environments requiring moderate performance enhancement over LT1495.
LT1498IS8#PBF / LT1498IS8#TRPBF: Industrial temperature grade (-40°C to 85°C). Intermediate temperature coverage with moderate performance. Available in Tube and Cut Tape & Digi-Reel packaging.

Compliance & Certification: All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard PCB assembly and storage protocols. All parts are classified as Active product status.

Frequently Asked Questions (FAQ)

Q1: Can LT1495 variants directly replace LM7322MAX/NOPB in existing designs?

A: LT1495 variants are mechanically compatible (8-SOIC package, dual-circuit configuration, rail-to-rail output) and electrically compatible within the supply voltage range (2.2V to 36V). However, LT1495 devices exhibit significantly lower slew rate (0.001 V/µs vs. 18 V/µs) and gain-bandwidth product (2.7 kHz vs. 20 MHz). Direct substitution is valid only for applications where signal bandwidth and slew rate requirements are not critical. Verify circuit performance through simulation or testing before production implementation.

Q2: What is the difference between LT1498 and LT1495 series?

A: LT1498 devices provide higher performance specifications: slew rate of 6 V/µs (vs. 0.001 V/µs in LT1495) and gain-bandwidth product of 10.5 MHz (vs. 2.7 kHz in LT1495). LT1498 also exhibits higher input bias current (250 nA vs. 25-250 pA) and output current capability (30 mA vs. 1.5 mA per channel). LT1498 is suitable for applications requiring moderate bandwidth and faster transient response. LT1495 is optimized for ultra-low power consumption and minimal input bias current.

Q3: How do temperature grades (C, I, H) affect part selection?

A: Temperature grades define the guaranteed operating temperature range. Commercial grade (C) operates 0°C to 70°C, Industrial grade (I) operates -40°C to 85°C, and High-temperature grade (H) operates -40°C to 125°C. Select based on application environment. LM7322MAX/NOPB operates -40°C to 125°C; therefore, LT1495HS8#PBF or LT1498HS8#PBF provide equivalent full-range coverage. Lower-grade alternatives (C, I) are acceptable only if application thermal limits are confirmed.

Q4: What packaging options are available for substitute parts?

A: Substitute parts are available in three packaging formats: Tube (standard reel packaging), Cut Tape & Digi-Reel (for automated pick-and-place assembly), and Tape & Reel (for high-volume production). All maintain the same 8-SOIC footprint. Select packaging based on assembly process requirements and procurement volume.

Q5: Are all substitute parts ROHS3 compliant?

A: Yes. All LT1495 and LT1498 variants listed are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of LM7322MAX/NOPB. All parts are classified as Active product status.

Q6: What is the key parameter difference that prevents LM7322MAX/NOPB from being directly replaced by LT1495 in high-speed applications?

A: The gain-bandwidth product and slew rate are the limiting factors. LM7322MAX/NOPB provides 20 MHz bandwidth and 18 V/µs slew rate, while LT1495 provides only 2.7 kHz bandwidth and 0.001 V/µs slew rate. Applications requiring signal frequencies above 2.7 kHz or fast transient response require LT1498 (10.5 MHz, 6 V/µs) or retention of LM7322MAX/NOPB.

Q7: Can LT1498IS8#TRPBF be used in place of LM7322MAX/NOPB for industrial temperature applications?

A: LT1498IS8#TRPBF operates -40°C to 85°C, which covers most industrial temperature ranges but does not extend to the full 125°C upper limit of LM7322MAX/NOPB. Use LT1498IS8#TRPBF only if application maximum operating temperature does not exceed 85°C. For full -40°C to 125°C coverage, select LT1498HS8#PBF.

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