LM7332MA/NOPB Equivalent & Substitute Parts

Part Overview

The LM7332MA/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 21 MHz gain-bandwidth product and 12 V/µs slew rate, suitable for applications requiring moderate-speed signal conditioning and amplification across a wide supply voltage range of 2.5 V to 32 V.

The LM7332MA/NOPB is classified as Last Time Buy, indicating that Texas Instruments has discontinued this part number. Identifying equivalent and substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for systems currently utilizing this device.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	12	V/µs
Gain Bandwidth Product	21	MHz
Current - Input Bias	1	µA
Voltage - Input Offset	2	mV
Current - Supply (per Channel)	2	mA
Current - Output / Channel	70	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	32	V
Operating Temperature Range	−40 to 125	°C
Package / Case	8-SOIC (0.154", 3.90 mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LM7332MA/NOPB is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Dual-circuit (2) general-purpose operational amplifier architecture
Rail-to-rail output capability
8-SOIC surface-mount package with 0.154" (3.90 mm) width
Supply voltage range spanning minimum 2.5 V and maximum 32 V
Operating temperature range of −40°C to 125°C
Slew rate of 12 V/µs or greater
Gain-bandwidth product of 21 MHz or greater
Output current capability of 70 mA per channel or greater

Substitute Categories:

Category 1: Direct Manufacturer Equivalent (Texas Instruments) The LM7332MAX/NOPB represents the active production equivalent from the same manufacturer, differing only in packaging format (Cut Tape & Digi-Reel® versus Tube). All electrical and thermal specifications are identical.

Category 2: Analog Devices LT1495 Series (Partial Compatibility) The LT1495 family (LT1495CS8#PBF, LT1495CS8#TRPBF, LT1495HS8, LT1495HS8#PBF, LT1495HS8#TRPBF, LT1495IS8#PBF, LT1495IS8#TR, LT1495IS8#TRPBF) meets package, circuit count, and output type requirements. However, these devices exhibit significantly reduced performance in slew rate (0.001 V/µs) and gain-bandwidth product (2.7 kHz), making them unsuitable for applications requiring the LM7332MA/NOPB's speed characteristics. These parts are listed as substitutes only for low-frequency, low-speed applications where performance degradation is acceptable.

Category 3: Analog Devices LT1498 Series (Partial Compatibility) The LT1498CS8#PBF meets package and circuit count requirements with improved slew rate (6 V/µs) and gain-bandwidth product (10.5 MHz) compared to the LT1495 series. However, these specifications remain below the LM7332MA/NOPB baseline, limiting applicability to moderate-speed designs.

Parameter Comparison

Parameter	LM7332MA/NOPB	LM7332MAX/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.
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)	12	12	0.001	0.001	0.001	6
Gain Bandwidth Product (MHz)	21	21	0.0027	0.0027	0.0027	10.5
Current - Input Bias (pA/nA/µA)	1 µA	1 µA	250 pA	250 pA	25 pA	250 nA
Voltage - Input Offset (mV/µV)	2 mV	2 mV	200 µV	200 µV	200 µV	200 µV
Current - Supply per Channel (mA/µA)	2 mA	2 mA	1 µA	1 µA	1 µA	1.8 mA
Current - Output / Channel (mA)	70	70	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 Range (°C)	−40 to 125	−40 to 125	0 to 70	−40 to 125	−40 to 85	0 to 70
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Product Status	Last Time Buy	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Recommended Primary Substitute: LM7332MAX/NOPB

The LM7332MAX/NOPB is the manufacturer-recommended equivalent from Texas Instruments. This part maintains identical electrical specifications, thermal performance, and operating characteristics to the LM7332MA/NOPB. The only difference is packaging format: LM7332MAX/NOPB is supplied in Cut Tape & Digi-Reel® format, whereas the original is supplied in Tube format. Both are ROHS3 compliant with MSL 1 (Unlimited) rating. Current inventory of 10,200 units ensures supply availability. This substitution requires no circuit redesign or performance re-evaluation.

Secondary Substitutes: LT1495 Series (LT1495HS8#PBF, LT1495HS8#TRPBF, LT1495IS8#PBF, LT1495IS8#TRPBF)

The LT1495 series from Analog Devices Inc. is suitable only for applications where the LM7332MA/NOPB's high-speed performance (12 V/µs slew rate, 21 MHz gain-bandwidth product) is not required. These devices are appropriate for precision, low-frequency signal conditioning where input offset voltage (200 µV) and input bias current characteristics are prioritized over speed. The LT1495HS8#PBF and LT1495HS8#TRPBF variants support the full −40°C to 125°C operating temperature range, matching the original part's thermal specification. All LT1495 variants are ROHS3 compliant with MSL 1 rating and are in Active product status.

Tertiary Substitute: LT1498CS8#PBF

The LT1498CS8#PBF offers intermediate performance between the LT1495 and LM7332MA/NOPB, with 6 V/µs slew rate and 10.5 MHz gain-bandwidth product. This device is suitable for moderate-speed applications where the LM7332MA/NOPB's full performance envelope is not required but LT1495 performance is insufficient. Operating temperature range is limited to 0°C to 70°C, restricting use in extended-temperature applications. ROHS3 compliance and MSL 1 rating are maintained.

Compliance and Certification Status

All recommended substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard PCB assembly and storage protocols. All parts carry EAR99 ECCN classification and are REACH Unaffected, matching the regulatory profile of the original LM7332MA/NOPB.

Frequently Asked Questions (FAQ)

Q1: Can the LM7332MAX/NOPB be used as a direct replacement for the LM7332MA/NOPB without circuit modification?

A: Yes. The LM7332MAX/NOPB is electrically and thermally identical to the LM7332MA/NOPB. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tube). No circuit redesign, PCB layout changes, or performance re-evaluation are required. Both parts are pin-compatible in 8-SOIC packages and deliver identical electrical performance across all specified parameters.

Q2: Why do the LT1495 series devices show significantly lower slew rate and gain-bandwidth product than the LM7332MA/NOPB?

A: The LT1495 series is designed for precision, low-frequency applications where input offset voltage and input bias current are critical performance metrics. These devices prioritize accuracy and low power consumption over speed. The 0.001 V/µs slew rate and 2.7 kHz gain-bandwidth product reflect this design philosophy. Applications requiring the LM7332MA/NOPB's 12 V/µs slew rate and 21 MHz bandwidth should not use LT1495 devices.

Q3: What is the key difference between LT1495HS8#PBF and LT1495IS8#PBF?

A: Both devices are functionally identical with one exception: input bias current specification. The LT1495HS8#PBF specifies 250 pA input bias current, while the LT1495IS8#PBF specifies 25 pA. Additionally, the LT1495HS8#PBF supports the full −40°C to 125°C operating temperature range, whereas the LT1495IS8#PBF is rated for −40°C to 85°C. For applications requiring extended high-temperature operation and lower input bias current, the LT1495IS8#PBF is preferred within its temperature range.

Q4: Can the LT1498CS8#PBF replace the LM7332MA/NOPB in high-speed signal conditioning applications?

A: The LT1498CS8#PBF is not recommended for applications requiring the LM7332MA/NOPB's full speed performance. With 6 V/µs slew rate and 10.5 MHz gain-bandwidth product, the LT1498 delivers approximately 50% of the LM7332's speed capability. Applications with bandwidth requirements below 5 MHz and slew rate requirements below 3 V/µs may be compatible. Operating temperature range is also limited to 0°C to 70°C, restricting use in extended-temperature environments.

Q5: Are all substitute parts available in the same 8-SOIC package as the LM7332MA/NOPB?

A: Yes. All recommended substitutes (LM7332MAX/NOPB, LT1495 series, and LT1498CS8#PBF) are supplied in 8-SOIC packages with 0.154" (3.90 mm) width, matching the original part's footprint. PCB layout and component placement require no modification. However, packaging format (Tube, Cut Tape & Digi-Reel®, or Tape & Reel) varies by part number and should be verified for assembly line compatibility.

Q6: What is the supply voltage compatibility between the LM7332MA/NOPB and its substitutes?

A: The LM7332MA/NOPB operates across 2.5 V to 32 V supply range. The LT1495 and LT1498 series support 2.2 V to 36 V, providing broader supply voltage coverage. All devices are compatible with standard dual-supply (±5 V, ±12 V, ±15 V) and single-supply (5 V, 12 V, 15 V) configurations. No supply circuit redesign is required when substituting these devices.

Q7: How does input offset voltage affect substitution decisions?

A: The LM7332MA/NOPB specifies 2 mV input offset voltage, while all LT1495 and LT1498 substitutes specify 200 µV. Lower input offset voltage in substitute devices improves precision in DC-coupled amplifier configurations and reduces calibration requirements. For AC-coupled applications or designs with offset nulling provisions, this difference is negligible. For precision instrumentation requiring minimal offset drift, the lower offset voltage of substitute devices is advantageous.

Q8: What inventory considerations should guide substitute part selection?

A: Current inventory levels are: LM7332MA/NOPB (1,810 units, Last Time Buy), LM7332MAX/NOPB (10,200 units, Active), LT1495HS8#TRPBF (3,758 units), LT1495HS8#PBF (1,448 units), LT1495IS8#TRPBF (2,600 units), LT1495IS8#PBF (1,954 units), LT1495CS8#TRPBF (1,853 units), LT1495CS8#PBF (1,485 units), and LT1498CS8#PBF (1,413 units). For long-term supply security, the LM7332MAX/NOPB with 10,200 units in Active status is preferred. For applications where LT1495 performance is acceptable, the LT1495HS8#TRPBF offers the highest inventory level (3,758 units).

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