LMV934IDE4 Equivalent & Substitute Parts

Part Overview

The LMV934IDE4 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, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement.

The LMV934IDE4 provides rail-to-rail output capability with a 1.5 MHz gain bandwidth product and operates across a 1.8 V to 5 V supply range. Its primary applications include low-power signal conditioning, filtering, and general analog signal processing in battery-powered and low-voltage systems.

Due to its obsolete status, active alternatives from Texas Instruments and other manufacturers are required to maintain design continuity and ensure long-term component availability.

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	—

Substitute Part Grouping Explanation

Substitution of the LMV934IDE4 is determined by the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: General Purpose
Number of Circuits: 4
Output Type: Rail-to-Rail
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Operating Temperature Range: -40°C to 125°C (minimum requirement)

Secondary Compatibility Parameters:

Slew Rate: ≥ 0.35 V/µs (maintains signal fidelity for typical applications)
Gain Bandwidth Product: ≥ 1.3 MHz (ensures frequency response compatibility)
Voltage - Supply Span: Minimum 1.8 V, Maximum ≥ 5 V (covers original operating range)
Current - Supply: ≤ 250 µA per channel (power budget consideration)

Substitute parts are grouped into two categories:

Category A - Direct Replacements (Texas Instruments LMV Series): LMV934MA/NOPB and LMV934MAX/NOPB maintain identical electrical specifications and package dimensions. These are active products with superior supply availability.

Category B - Functional Equivalents (Alternative Manufacturers & Architectures): Parts from Rohm Semiconductor, STMicroelectronics, and Microchip Technology provide equivalent functionality with variations in slew rate, bandwidth, and supply current. These are selected based on matching the four-circuit general-purpose amplifier topology and 14-SOIC package form factor.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Status
LMV934IDE4	Texas Instruments	General Purpose	0.42	1.5	15	116	100	1.8	5.0	-40 to 125	Obsolete
LMV934MA/NOPB	Texas Instruments	General Purpose	0.42	1.5	14	116	100	1.8	5.5	-40 to 125	Active
LMV934MAX/NOPB	Texas Instruments	General Purpose	0.42	1.5	14	116	100	1.8	5.5	-40 to 125	Active
LMR934F-GE2	Rohm Semiconductor	General Purpose	0.35	1.4	5	250	90	1.8	5.0	-40 to 85	Active
LMV324IYDT	STMicroelectronics	General Purpose	0.45	1.3	16	162	160	2.7	6.0	-40 to 125	Active
MCP6234T-E/SL	Microchip Technology	General Purpose	0.15	0.3	1	20	23	1.8	6.0	-40 to 125	Active
MCP6424-E/SL	Microchip Technology	General Purpose	0.05	0.09	1	4.4	22	1.8	5.5	-40 to 125	Active
MCP6424T-E/SL	Microchip Technology	General Purpose	0.05	0.09	1	4.4	22	1.8	5.5	-40 to 125	Active
MCP6474-E/SL	Microchip Technology	CMOS	1.1	2.0	1	100	32	2.0	5.5	-40 to 125	Active
MCP6474T-E/SL	Microchip Technology	CMOS	1.1	2.0	1	100	32	2.0	5.5	-40 to 125	Active
BU7487F-E2	Rohm Semiconductor	CMOS	10	10	1	6	12	3.0	5.5	-40 to 105	Active

Engineering Selection Recommendations

Tier 1 - Recommended Direct Replacements:

LMV934MA/NOPB and LMV934MAX/NOPB are the primary recommended substitutes. Both are manufactured by Texas Instruments and maintain electrical and mechanical compatibility with the LMV934IDE4. These parts feature identical slew rate (0.42 V/µs), gain bandwidth product (1.5 MHz), and package dimensions. The maximum supply voltage is extended to 5.5 V, providing enhanced flexibility. Both parts are active products with robust inventory availability (1,899 and 32,900 units respectively) and ROHS3 compliance.

Tier 2 - Functional Equivalents with Acceptable Parameter Variance:

LMV324IYDT (STMicroelectronics) and LMR934F-GE2 (Rohm Semiconductor) provide general-purpose four-circuit amplifier functionality in compatible packages. LMV324IYDT maintains the full -40°C to 125°C operating range and offers enhanced output current capability (160 mA per channel). LMR934F-GE2 operates at -40°C to 85°C with reduced maximum temperature rating; this part is suitable for applications not requiring the full 125°C upper limit.

Tier 3 - Low-Power Alternatives:

MCP6424-E/SL and MCP6424T-E/SL (Microchip Technology) are ultra-low-power options with supply current of only 4.4 µA per channel. These parts sacrifice slew rate (0.05 V/µs) and bandwidth (90 kHz) but are appropriate for battery-powered applications where power consumption is the primary design constraint.

Tier 4 - Enhanced Performance Options:

MCP6474-E/SL and MCP6474T-E/SL (Microchip Technology) provide higher slew rate (1.1 V/µs) and bandwidth (2 MHz) with CMOS architecture. BU7487F-E2 (Rohm Semiconductor) offers the highest performance metrics (10 V/µs slew rate, 10 MHz bandwidth) but requires minimum 3 V supply and operates to 105°C maximum.

All recommended substitutes are ROHS3 compliant and carry REACH Unaffected status, matching the regulatory profile of the original part.

Frequently Asked Questions (FAQ)

Q1: Can LMV934MA/NOPB directly replace LMV934IDE4 without circuit modification?

A: Yes. LMV934MA/NOPB is electrically and mechanically compatible. Both parts feature identical slew rate (0.42 V/µs), gain bandwidth product (1.5 MHz), input bias current (14 nA vs. 15 nA), and 14-SOIC package dimensions. The extended maximum supply voltage (5.5 V vs. 5.0 V) provides additional design margin. No circuit changes are required.

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

A: Both parts are electrically identical. The primary difference is packaging: LMV934MA/NOPB is supplied in Tube packaging, while LMV934MAX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format. LMV934MAX/NOPB has significantly higher inventory availability (32,900 units vs. 1,899 units).

Q3: Why would I select MCP6424-E/SL over LMV934MAX/NOPB?

A: MCP6424-E/SL is selected when ultra-low power consumption is critical. It draws only 4.4 µA per channel compared to 116 µA for the LMV934MAX/NOPB. This 26-fold reduction in supply current is essential for battery-powered applications. The trade-off is significantly reduced slew rate (0.05 V/µs vs. 0.42 V/µs) and bandwidth (90 kHz vs. 1.5 MHz), making it unsuitable for high-frequency signal processing.

Q4: Is LMV324IYDT suitable for applications requiring the full -40°C to 125°C temperature range?

A: Yes. LMV324IYDT maintains the complete -40°C to 125°C operating range. It is qualified to AEC-Q100 automotive standards and carries automotive-grade certification. This part is appropriate for industrial and automotive applications requiring extended temperature operation.

Q5: What are the package compatibility considerations when substituting these parts?

A: All recommended Tier 1 and Tier 2 substitutes use 14-SOIC surface-mount packages with 0.154" (3.90 mm) width, matching the LMV934IDE4 footprint. LMR934F-GE2 and BU7487F-E2 use 14-SOP packages with 0.173" (4.40 mm) width; these are mechanically compatible with standard 14-SOIC PCB layouts but have slightly different pin spacing. Verify PCB artwork compatibility before assembly.

Q6: Can CMOS amplifiers (MCP6474 series, BU7487F-E2) replace the LMV934IDE4 in all applications?

A: CMOS amplifiers offer superior performance metrics (higher slew rate and bandwidth) but differ in input bias current (1 pA vs. 15 nA) and supply current characteristics. They are suitable for most general-purpose applications but may require circuit re-optimization in precision instrumentation designs where input bias current matching is critical. Verify input impedance and offset voltage requirements before substitution.

Q7: What is the significance of the "obsolete" status of LMV934IDE4?

A: Obsolete status indicates that Texas Instruments has discontinued manufacturing and will not accept new orders. Existing inventory may be available from authorized distributors, but long-term supply cannot be guaranteed. Immediate transition to active alternatives (LMV934MA/NOPB or LMV934MAX/NOPB) is recommended for new designs and ongoing production.

Q8: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this document carry ROHS3 Compliant status and REACH Unaffected designation, matching the regulatory compliance profile of the LMV934IDE4. All parts are suitable for applications subject to European Union environmental directives.

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