LMV934MA Equivalent & Substitute Parts

Part Overview

The LMV934MA is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-SOIC surface-mount package. This device is classified as obsolete, with 1715 units currently in stock. The LMV934MA provides rail-to-rail output capability across a 1.8 V to 5.5 V supply range, making it suitable for low-voltage analog signal processing applications.

Due to its obsolete product status, identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements. Active alternatives with comparable electrical characteristics and identical packaging are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	0.42	V/µs
Gain Bandwidth Product	1.5	MHz
Current - Input Bias	14	nA
Voltage - Input Offset	1	mV
Current - Supply (x4 Channels)	116	µA
Current - Output / Channel	100	mA
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the LMV934MA are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

Four independent operational amplifier circuits
Rail-to-rail output configuration
14-SOIC surface-mount package (0.154", 3.90mm width)
Supply voltage range: 1.8 V to 5.5 V minimum compatibility
Operating temperature range: -40°C to 125°C minimum coverage
General-purpose amplifier classification

Secondary Compatibility Parameters:

Slew rate: 0.35 V/µs to 1.5 V/µs (acceptable range for general-purpose applications)
Gain bandwidth product: 1.0 MHz to 1.5 MHz
Input bias current: 1 nA to 16 nA
Input offset voltage: 100 µV to 1.7 mV
Output current per channel: 12 mA to 160 mA

Substitutes are grouped into two categories: direct Texas Instruments variants (same base product number LMV934) and cross-manufacturer equivalents (onsemi, Analog Devices, Rohm Semiconductor, STMicroelectronics, Diodes Incorporated). All listed substitutes maintain the four-circuit, rail-to-rail, 14-SOIC configuration required for pin-compatible replacement.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA/pA)	Supply Current (µA)	Output Current (mA)	Temp Range (°C)	Package
LMV934MA	Texas Instruments	Obsolete	0.42	1.5	14 nA	116	100	-40 to 125	14-SOIC
LMV934MA/NOPB	Texas Instruments	Active	0.42	1.5	14 nA	116	100	-40 to 125	14-SOIC
LMV934MAX/NOPB	Texas Instruments	Active	0.42	1.5	14 nA	116	100	-40 to 125	14-SOIC
NCS20084DR2G	onsemi	Active	0.4	1.2	1 pA	48	15	-40 to 125	14-SOIC
AD8544WARZ-R7	Analog Devices Inc.	Active	0.92	1.0	4 pA	45	30	-40 to 125	14-SOIC
BU7487F-E2	Rohm Semiconductor	Active	10	10	1 pA	6000	12	-40 to 105	14-SOP
LMR934F-GE2	Rohm Semiconductor	Active	0.35	1.4	5 nA	250	90	-40 to 85	14-SOP
LMV324AM14X	onsemi	Obsolete	1.5	1.4	1 nA	100	34	-40 to 125	14-SOIC
LMV324BG-13	Diodes Incorporated	Active	1.0	1.0	15 nA	340	90	-40 to 125	14-SOIC
LMV324IDT	STMicroelectronics	Active	0.45	1.3	16 nA	162	160	-40 to 125	14-SOIC
LMV324IYDT	STMicroelectronics	Active	0.45	1.3	16 nA	162	160	-40 to 125	14-SOIC

Engineering Selection Recommendations

Tier 1: Direct Replacement (Identical Electrical Performance)

LMV934MA/NOPB and LMV934MAX/NOPB are direct replacements manufactured by Texas Instruments. Both parts maintain identical electrical specifications to the obsolete LMV934MA, including slew rate (0.42 V/µs), gain bandwidth product (1.5 MHz), and supply current (116 µA). LMV934MAX/NOPB offers the highest inventory availability (32,900 units) and is recommended as the primary substitute. Both parts are ROHS3 compliant and carry MSL 1 rating.

Tier 2: Cross-Manufacturer Equivalents (14-SOIC Package, Active Status)

LMV324IDT (STMicroelectronics) and LMV324IYDT (STMicroelectronics) provide pin-compatible substitution with improved output current capability (160 mA per channel versus 100 mA). Both maintain the full -40°C to 125°C operating range and 14-SOIC package. LMV324IYDT includes AEC-Q100 automotive qualification. LMV324IDT offers the highest inventory (37,469 units).

LMV324BG-13 (Diodes Incorporated) operates within the required supply range and temperature specifications, with active product status and 5,450 units in stock.

Tier 3: Alternative Configurations (Modified Electrical Characteristics)

NCS20084DR2G (onsemi) provides automotive-grade qualification (AEC-Q100) with significantly reduced supply current (48 µA) and input bias current (1 pA), suitable for power-constrained applications. Output current is reduced to 15 mA per channel.

AD8544WARZ-R7 (Analog Devices) offers higher slew rate (0.92 V/µs) and improved input bias current (4 pA), with minimum supply voltage of 2.7 V (versus 1.8 V for LMV934MA).

Tier 4: Not Recommended for Direct Substitution

BU7487F-E2 (Rohm Semiconductor) is a CMOS amplifier with significantly different electrical characteristics (10 V/µs slew rate, 10 MHz GBW, 6 mA supply current) and reduced maximum operating temperature (105°C). Package width differs (4.40mm versus 3.90mm). This part is suitable only for applications requiring higher bandwidth and slew rate.

LMR934F-GE2 (Rohm Semiconductor) has reduced maximum operating temperature (85°C) and higher supply current (250 µA), limiting its use to applications not requiring full 125°C operation.

LMV324AM14X (onsemi) is obsolete and not recommended for new designs despite active inventory.

Frequently Asked Questions (FAQ)

Q1: Can LMV934MAX/NOPB be used as a direct drop-in replacement for LMV934MA?

Yes. LMV934MAX/NOPB is electrically and mechanically identical to LMV934MA. Both parts share the same base product number (LMV934), identical electrical specifications, and 14-SOIC package. The primary difference is packaging format (Cut Tape & Digi-Reel versus standard packaging) and product status (Active versus Obsolete). Pin configuration and performance characteristics are identical.

Q2: What is the difference between LMV934MA/NOPB and LMV934MAX/NOPB?

Both parts are manufactured by Texas Instruments with identical electrical specifications. The difference is packaging and distribution format. LMV934MA/NOPB is supplied in Tube packaging, while LMV934MAX/NOPB is supplied in Cut Tape & Digi-Reel format. LMV934MAX/NOPB has significantly higher inventory availability (32,900 units versus 1,899 units). Both are ROHS3 compliant with MSL 1 rating.

Q3: Can STMicroelectronics LMV324IDT replace LMV934MA in all applications?

LMV324IDT is pin-compatible and operates within the required supply voltage range (-40°C to 125°C). However, electrical characteristics differ: slew rate is 0.45 V/µs (versus 0.42 V/µs), gain bandwidth product is 1.3 MHz (versus 1.5 MHz), and output current is 160 mA per channel (versus 100 mA). These differences are acceptable for general-purpose amplifier applications. Input offset voltage is superior (100 µV versus 1 mV). Substitution is valid for designs not dependent on the specific 0.42 V/µs slew rate or 1.5 MHz bandwidth.

Q4: Why is NCS20084DR2G listed as a substitute if it has lower output current (15 mA versus 100 mA)?

NCS20084DR2G is listed as a functional equivalent for applications where output current requirements are lower. This part offers automotive-grade qualification (AEC-Q100) and significantly reduced supply current (48 µA versus 116 µA), making it suitable for battery-powered or automotive applications. Substitution is valid only when output current requirements do not exceed 15 mA per channel.

Q5: Is the 14-SOP package (BU7487F-E2, LMR934F-GE2) compatible with 14-SOIC PCB layouts?

No. While both packages are 14-pin surface-mount configurations, the physical dimensions differ. 14-SOIC has a body width of 0.154" (3.90mm), while 14-SOP has a body width of 0.173" (4.40mm). PCB footprints are not interchangeable. These parts require PCB redesign and are not recommended for direct substitution in existing layouts.

Q6: What is the significance of AEC-Q100 qualification on LMV324IYDT and NCS20084DR2G?

AEC-Q100 qualification indicates the part meets automotive industry reliability standards for temperature cycling, thermal shock, and long-term stability. These parts are suitable for automotive applications requiring enhanced reliability documentation. Non-automotive qualified parts (LMV934MA, LMV324IDT) are not recommended for automotive designs requiring AEC-Q100 compliance.

Q7: Why does BU7487F-E2 have a maximum operating temperature of only 105°C?

BU7487F-E2 is a CMOS amplifier design with different thermal characteristics than the general-purpose amplifiers in this comparison. The 105°C maximum reflects the manufacturer's specification for this device class. Applications requiring full -40°C to 125°C operation must use alternatives such as LMV934MAX/NOPB, LMV324IDT, or AD8544WARZ-R7.

Q8: Can multiple substitute parts be used interchangeably within a single design?

No. While all listed substitutes are functionally equivalent for general-purpose amplifier applications, electrical parameter variations (slew rate, bandwidth, output current, supply current) may affect circuit performance. A single substitute part should be selected and validated for the specific application. Mixing different substitute parts in the same design is not recommended without circuit re-analysis.

Q9: What inventory considerations should guide substitute part selection?

LMV934MAX/NOPB offers the highest inventory (32,900 units) and is the recommended primary choice. LMV324IDT (STMicroelectronics) provides the second-highest availability (37,469 units) with active product status. For applications requiring automotive qualification, NCS20084DR2G (31,283 units) is available. Obsolete parts (LMV934MA, LMV324AM14X) should not be selected for new designs despite current inventory levels.

Q10: Are all listed substitutes ROHS3 compliant?

Yes. All substitute parts listed carry ROHS3 compliance certification. Moisture sensitivity levels vary: most parts are MSL 1 (Unlimited), with the exception of LMV324BG-13 (Diodes Incorporated), which is MSL 3 (168 Hours). MSL 3 parts require controlled storage and handling procedures.

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