LMV934IDR Equivalent & Substitute Parts

Part Overview

The LMV934IDR is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-SOIC surface-mount package. This device provides rail-to-rail output capability with low-power operation, making it suitable for battery-powered and portable applications. The LMV934IDR is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity.

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	15	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	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

Substitution of the LMV934IDR is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Four independent operational amplifier circuits
Rail-to-rail output configuration
General-purpose amplifier classification
14-SOIC surface-mount package (0.154", 3.90mm width)
Supply voltage range compatibility (minimum 1.8 V, maximum 5 V or higher)
Operating temperature range (-40°C to 125°C or wider)
ROHS3 compliance and MSL 1 rating

Secondary Compatibility Parameters:

Slew rate: 0.42 V/µs (acceptable range: 0.05 to 1.5 V/µs for general-purpose applications)
Gain bandwidth product: 1.5 MHz (acceptable range: 90 kHz to 2 MHz)
Input bias current: 15 nA (acceptable range: 1 pA to 27 nA)
Input offset voltage: 1 mV (acceptable range: 1 to 5 mV)
Supply current per channel: 116 µA (acceptable range: 4.4 to 250 µA)
Output current per channel: 100 mA (acceptable range: 22 to 100 mA)

Substitutes are grouped into two categories: Direct Texas Instruments Equivalents (same base product number, different packaging or temperature rating) and Cross-Manufacturer Alternatives (functionally equivalent from other manufacturers).

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package
LMV934IDR	Texas Instruments	Obsolete	0.42	1.5	15	116	100	1.8	5.0	-40 to 125	14-SOIC
LMV934MA/NOPB	Texas Instruments	Active	0.42	1.5	14	116	100	1.8	5.5	-40 to 125	14-SOIC
LMV934MAX/NOPB	Texas Instruments	Active	0.42	1.5	14	116	100	1.8	5.5	-40 to 125	14-SOIC
LMR934F-GE2	Rohm Semiconductor	Active	0.35	1.4	5	250	90	1.8	5.0	-40 to 85	14-SOP
LMV324AM14X	onsemi	Obsolete	1.5	1.4	1	100	34	2.7	5.5	-40 to 125	14-SOIC
LMX324IDT	STMicroelectronics	Active	0.7	1.3	27	130	70	2.3	5.5	-40 to 125	14-SOIC
MCP6234T-E/SL	Microchip Technology	Active	0.15	0.3	1 pA	20	23	1.8	6.0	-40 to 125	14-SOIC
MCP6424-E/SL	Microchip Technology	Active	0.05	0.09	1 pA	4.4	22	1.8	5.5	-40 to 125	14-SOIC
MCP6424T-E/SL	Microchip Technology	Active	0.05	0.09	1 pA	4.4	22	1.8	5.5	-40 to 125	14-SOIC
MCP6474-E/SL	Microchip Technology	Active	1.1	2.0	1 pA	100	32	2.0	5.5	-40 to 125	14-SOIC
BU7487F-E2	Rohm Semiconductor	Active	10	10	1 pA	6	12	3.0	5.5	-40 to 105	14-SOP

Engineering Selection Recommendations

Direct Equivalents (Recommended for Pin-Compatible Replacement):

The LMV934MA/NOPB and LMV934MAX/NOPB are direct active equivalents manufactured by Texas Instruments under the same base product number (LMV934). Both devices maintain identical electrical specifications to the obsolete LMV934IDR with marginal improvements: input bias current reduced from 15 nA to 14 nA, and maximum supply voltage increased from 5.0 V to 5.5 V. Both are ROHS3 compliant with MSL 1 rating. The LMV934MAX/NOPB offers higher inventory availability (32,900 units) compared to LMV934MA/NOPB (1,899 units). These parts are suitable for direct substitution in existing designs without circuit modification.

Cross-Manufacturer Alternatives (For New Designs or Extended Supply Chain):

LMX324IDT (STMicroelectronics) provides functional equivalence with active product status. It maintains the 14-SOIC package, four-circuit configuration, and rail-to-rail output. Electrical parameters remain within acceptable ranges: slew rate 0.7 V/µs, gain bandwidth product 1.3 MHz, and supply current 130 µA. The device supports the full -40°C to 125°C temperature range and is ROHS3 compliant. Inventory availability is substantial (15,254 units).

MCP6474-E/SL (Microchip Technology) offers enhanced performance characteristics suitable for applications requiring higher slew rate (1.1 V/µs) and gain bandwidth product (2.0 MHz). This CMOS-based device maintains four circuits in 14-SOIC packaging with rail-to-rail output. Supply current is 100 µA, matching the original specification. Operating temperature range is -40°C to 125°C with ROHS3 compliance. Inventory is available (4,000 units).

MCP6424-E/SL and MCP6424T-E/SL (Microchip Technology) are suitable for ultra-low-power applications. These devices feature extremely low supply current (4.4 µA per channel) and input bias current (1 pA), making them appropriate for battery-powered designs. Slew rate is reduced to 0.05 V/µs and gain bandwidth product to 90 kHz, limiting use to low-frequency signal conditioning. Both maintain 14-SOIC packaging, four-circuit configuration, and -40°C to 125°C operation with ROHS3 compliance.

Not Recommended for Direct Substitution:

LMR934F-GE2 (Rohm Semiconductor) exhibits reduced maximum operating temperature (85°C versus 125°C), limiting applicability in industrial temperature-range designs. BU7487F-E2 (Rohm Semiconductor) is a CMOS amplifier with significantly different electrical characteristics (10 V/µs slew rate, 10 MHz gain bandwidth product) and reduced minimum supply voltage (3.0 V), making it unsuitable for 1.8 V operation. LMV324AM14X (onsemi) is classified as obsolete, providing no supply chain advantage.

Frequently Asked Questions (FAQ)

Q: Can LMV934MAX/NOPB be used as a direct replacement for LMV934IDR without circuit modification?

A: Yes. Both devices are manufactured by Texas Instruments with identical base product number (LMV934) and maintain the same electrical specifications within the original design envelope. The LMV934MAX/NOPB offers improved maximum supply voltage (5.5 V versus 5.0 V) and marginally lower input bias current (14 nA versus 15 nA). Pin configuration and package dimensions (14-SOIC, 0.154" width) are identical. No circuit redesign is required.

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

A: The primary difference is packaging format. LMV934MA/NOPB is supplied in Tube packaging, while LMV934MAX/NOPB is supplied in Cut Tape (CT) and Digi-Reel® format. Electrical specifications and pin configuration are identical. Selection depends on assembly process requirements and inventory management preferences.

Q: Is MCP6474-E/SL suitable for applications requiring the original 0.42 V/µs slew rate?

A: No. MCP6474-E/SL provides 1.1 V/µs slew rate, which is 2.6 times faster than the original specification. While this enhancement is beneficial for high-speed applications, it may introduce stability issues in circuits designed for the lower slew rate of the LMV934IDR. Circuit re-evaluation is necessary before substitution.

Q: Can MCP6424-E/SL replace LMV934IDR in all applications?

A: No. MCP6424-E/SL is optimized for ultra-low-power operation with supply current of 4.4 µA per channel (versus 116 µA in the original). This device exhibits significantly reduced slew rate (0.05 V/µs) and gain bandwidth product (90 kHz), limiting it to low-frequency signal conditioning applications. Output current per channel is also reduced to 22 mA. Substitution is appropriate only for applications where these reduced performance parameters are acceptable.

Q: What is the significance of the 14-SOIC versus 14-SOP package designation?

A: Both designations refer to 14-pin surface-mount packages with similar physical dimensions. The primary distinction is manufacturer-specific nomenclature: Texas Instruments and Microchip use 14-SOIC (0.154", 3.90mm width), while Rohm Semiconductor uses 14-SOP (0.173", 4.40mm width). The Rohm package is slightly wider and may not be compatible with PCB layouts designed for the narrower 14-SOIC footprint. Verify PCB pad spacing before substitution.

Q: Are all substitute parts ROHS3 compliant and MSL 1 rated?

A: Yes. All substitute parts listed in this document are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original LMV934IDR specifications. This ensures compatibility with standard manufacturing processes and storage requirements.

Q: Which substitute offers the best inventory availability?

A: MCP6234T-E/SL (Microchip Technology) provides the highest inventory availability at 35,300 units. LMV934MAX/NOPB (Texas Instruments) is the second-highest at 32,900 units. Both are suitable for immediate procurement without supply chain delays.

Q: Can LMX324IDT be used in applications requiring operation below 2.3 V supply voltage?

A: No. LMX324IDT specifies a minimum supply voltage of 2.3 V, whereas the original LMV934IDR operates at 1.8 V minimum. Applications requiring sub-2.3 V operation must use LMV934MA/NOPB, LMV934MAX/NOPB, MCP6234T-E/SL, MCP6424-E/SL, or MCP6424T-E/SL, all of which support 1.8 V minimum supply voltage.

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