LMV934IDRG4 Equivalent & Substitute Parts

Part Overview

The LMV934IDRG4 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, though 1102 units remain in stock as new original inventory. The LMV934IDRG4 delivers 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, making it suitable for low-voltage analog signal processing applications.

Due to its obsolete product status, identifying equivalent and substitute parts is essential for design continuity, long-term supply chain reliability, and production planning. Active alternatives with comparable electrical and mechanical specifications are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LMV934IDRG4	—
Manufacturer	Texas Instruments	—
Product Status	Obsolete	—
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	—
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
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LMV934IDRG4 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Number of circuits: 4 independent amplifier channels
Output type: Rail-to-rail capability
Package type: 14-SOIC surface-mount configuration
Mounting type: Surface mount
Supply voltage range: Minimum 1.8 V, maximum ≥5 V
Operating temperature range: -40°C to 125°C or compatible
RoHS3 compliance and MSL Level 1

Secondary Electrical Parameters (Performance Matching):

Slew rate: 0.42 V/µs (baseline reference)
Gain bandwidth product: 1.5 MHz (baseline reference)
Input bias current: 15 nA (baseline reference)
Input offset voltage: 1 mV (baseline reference)
Supply current: 116 µA per four channels (baseline reference)
Output current per channel: 100 mA (baseline reference)

Substitute parts are grouped into two categories:

Category A – Direct Equivalents (Texas Instruments LMV934 Series): Parts that maintain identical electrical specifications and are manufactured by the same supplier. These include LMV934MA/NOPB and LMV934MAX/NOPB, both active products with enhanced supply voltage range (up to 5.5 V) and lower input bias current (14 nA).

Category B – Functional Equivalents (Alternative Manufacturers): Parts from Rohm Semiconductor, STMicroelectronics, and Microchip Technology that meet the core substitution criteria (4-circuit, rail-to-rail, 14-SOIC, -40°C to 125°C operation) but may exhibit variations in secondary electrical parameters such as slew rate, bandwidth, or supply current. These parts are suitable when the application tolerates performance variations within the specified ranges.

Parameter Comparison

Parameter	LMV934IDRG4	LMV934MA/NOPB	LMV934MAX/NOPB	LMR934F-GE2	LMV324IDT	MCP6234T-E/SL	MCP6424T-E/SL	MCP6474T-E/SL
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Rohm Semiconductor	STMicroelectronics	Microchip Technology	Microchip Technology	Microchip Technology
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Number of Circuits	4	4	4	4	4	4	4	4
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	CMOS
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.173", 4.40mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Slew Rate (V/µs)	0.42	0.42	0.42	0.35	0.45	0.15	0.05	1.1
Gain Bandwidth Product (MHz)	1.5	1.5	1.5	1.4	1.3	0.3	0.09	2
Current - Input Bias (nA)	15	14	14	5	16	1	1	1
Voltage - Input Offset (mV)	1	1	1	1	0.1	5	1	1.5
Current - Supply (µA, x4 Channels)	116	116	116	250	162	20	4.4	100
Current - Output / Channel (mA)	100	100	100	90	160	23	22	32
Voltage - Supply Span Min (V)	1.8	1.8	1.8	1.8	2.7	1.8	1.8	2
Voltage - Supply Span Max (V)	5	5.5	5.5	5	6	6	5.5	5.5
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 125	-40 to 125	-40 to 125	-40 to 125
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation – Direct Equivalents:

For applications requiring minimal design modification and maximum electrical compatibility, select LMV934MAX/NOPB or LMV934MA/NOPB. Both are active Texas Instruments products that maintain the LMV934 base design with identical core specifications (0.42 V/µs slew rate, 1.5 MHz bandwidth, 4-circuit configuration). LMV934MAX/NOPB offers superior inventory availability (32,900 units) and is packaged in Cut Tape & Digi-Reel format, supporting high-volume production. LMV934MA/NOPB is available in Tube packaging (1,899 units) for lower-volume applications. Both support extended supply voltage to 5.5 V and feature marginally lower input bias current (14 nA vs. 15 nA), providing enhanced performance headroom.

Secondary Recommendations – Functional Equivalents:

When design flexibility permits performance variation within application tolerances, the following active alternatives are suitable:

LMV324IDT (STMicroelectronics): Maintains 4-circuit, rail-to-rail, 14-SOIC configuration with -40°C to 125°C operation. Offers superior input offset voltage (100 µV vs. 1 mV) and higher output current capability (160 mA vs. 100 mA per channel). Slew rate (0.45 V/µs) and bandwidth (1.3 MHz) are closely matched. Inventory: 37,469 units. Suitable for applications requiring tighter offset specifications or higher output drive capability.

MCP6234T-E/SL (Microchip Technology): Provides 4-circuit, rail-to-rail, 14-SOIC configuration with ultra-low supply current (20 µA total). Slew rate (0.15 V/µs) and bandwidth (300 kHz) are reduced; input bias current is negligible (1 pA). Suitable for battery-powered or ultra-low-power applications where bandwidth and slew rate requirements are relaxed. Inventory: 35,300 units.

MCP6424T-E/SL (Microchip Technology): Delivers 4-circuit, rail-to-rail, 14-SOIC configuration with minimal supply current (4.4 µA total). Slew rate (0.05 V/µs) and bandwidth (90 kHz) are significantly reduced. Suitable for precision, ultra-low-power signal conditioning where bandwidth is not critical. Inventory: 3,400 units.

MCP6474T-E/SL (Microchip Technology): CMOS amplifier with 4-circuit, rail-to-Rail, 14-SOIC configuration. Offers enhanced slew rate (1.1 V/µs) and bandwidth (2 MHz) compared to the LMV934IDRG4, with ultra-low input bias current (1 pA). Suitable for applications requiring faster transient response or higher bandwidth. Inventory: 6,400 units.

LMR934F-GE2 (Rohm Semiconductor): General-purpose 4-circuit, rail-to-rail amplifier in 14-SOP package (0.173", 4.40mm width). Slew rate (0.35 V/µs) and bandwidth (1.4 MHz) are closely matched. Operating temperature range limited to -40°C to 85°C. Inventory: 3,301 units. Note: Package width differs from LMV934IDRG4; PCB layout verification required.

Selection Criteria Summary:

Inventory availability: LMV934MAX/NOPB and LMV324IDT offer highest stock levels.
Product status: All recommended substitutes are active products, ensuring long-term supply continuity.
Compliance: All candidates are ROHS3 compliant with MSL Level 1 rating.
Package compatibility: LMV934MA/NOPB, LMV934MAX/NOPB, LMV324IDT, MCP6234T-E/SL, MCP6424T-E/SL, and MCP6474T-E/SL maintain the 14-SOIC (0.154", 3.90mm) footprint. LMR934F-GE2 uses 14-SOP (0.173", 4.40mm) and requires layout verification.
Performance matching: LMV934MA/NOPB and LMV934MAX/NOPB provide closest electrical alignment. Microchip MCP6474T-E/SL offers enhanced bandwidth and slew rate. Microchip MCP6234T-E/SL and MCP6424T-E/SL prioritize power efficiency.

Frequently Asked Questions (FAQ)

Q1: Can I directly replace LMV934IDRG4 with LMV934MAX/NOPB without design changes?

A: Yes. LMV934MAX/NOPB is a direct equivalent manufactured by Texas Instruments with identical electrical specifications (0.42 V/µs slew rate, 1.5 MHz bandwidth, 4-circuit configuration, 14-SOIC package). The part is pin-compatible and footprint-compatible. The only design benefit is extended maximum supply voltage (5.5 V vs. 5 V) and marginally lower input bias current (14 nA vs. 15 nA). No circuit modifications are required.

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

A: Both are Texas Instruments LMV934 equivalents with identical electrical specifications. The primary difference is packaging: LMV934MA/NOPB is supplied in Tube format (1,899 units available), while LMV934MAX/NOPB is supplied in Cut Tape & Digi-Reel format (32,900 units available). For high-volume production, LMV934MAX/NOPB is preferred due to superior inventory and automated assembly compatibility.

Q3: Can I use MCP6474T-E/SL as a substitute if my application requires higher bandwidth?

A: Yes, if your circuit design accommodates the performance differences. MCP6474T-E/SL offers 2 MHz bandwidth and 1.1 V/µs slew rate compared to LMV934IDRG4's 1.5 MHz and 0.42 V/µs. However, MCP6474T-E/SL is a CMOS amplifier with 1 pA input bias current (vs. 15 nA), which may affect circuit biasing and require input impedance adjustments. Verify that your application can tolerate these electrical differences.

Q4: Why does LMV324IDT have a higher maximum supply voltage (6 V) than LMV934IDRG4 (5 V)?

A: LMV324IDT is manufactured by STMicroelectronics and is designed for a broader supply range (2.7 V to 6 V). This extended range does not affect substitution compatibility; it simply provides additional design flexibility. If your circuit operates at 5 V or below, LMV324IDT functions identically to LMV934IDRG4 within that voltage window.

Q5: What is the impact of using MCP6234T-E/SL or MCP6424T-E/SL in a high-speed application?

A: These Microchip parts are not suitable for high-speed applications. MCP6234T-E/SL offers only 300 kHz bandwidth and 0.15 V/µs slew rate; MCP6424T-E/SL offers 90 kHz bandwidth and 0.05 V/µs slew rate. Both are optimized for precision, low-power signal conditioning where bandwidth is not critical. If your application requires the 1.5 MHz bandwidth of the LMV934IDRG4, select LMV934MAX/NOPB, LMV934MA/NOPB, or MCP6474T-E/SL instead.

Q6: Is LMR934F-GE2 a suitable substitute despite the different package width?

A: LMR934F-GE2 is functionally equivalent (4-circuit, rail-to-rail, general-purpose amplifier) with closely matched electrical specifications (0.35 V/µs slew rate, 1.4 MHz bandwidth). However, the package width differs: LMR934F-GE2 uses 14-SOP (0.173", 4.40mm) versus LMV934IDRG4's 14-SOIC (0.154", 3.90mm). This difference requires PCB layout verification to confirm that the wider package does not create mechanical or thermal conflicts. Electrical substitution is valid; mechanical compatibility must be confirmed.

Q7: What does "obsolete" status mean for LMV934IDRG4, and why should I transition to an active part?

A: Obsolete status indicates that Texas Instruments has discontinued manufacturing and will not accept new orders beyond existing inventory. While 1,102 units remain in stock, long-term supply is not guaranteed. Transitioning to an active product such as LMV934MAX/NOPB ensures continued availability for future production runs, design revisions, and warranty support. Active products receive ongoing manufacturer support and are eligible for design-in programs.

Q8: Are all substitute parts ROHS3 compliant and MSL Level 1?

A: Yes. All recommended substitute parts in this document are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating, matching the LMV934IDRG4 specification. This ensures compatibility with standard PCB assembly processes and long-term storage without special handling requirements.

Q9: Which substitute offers the lowest power consumption?

A: MCP6424T-E/SL offers the lowest supply current at 4.4 µA total (across four channels), compared to LMV934IDRG4's 116 µA. MCP6234T-E/SL is the second-lowest at 20 µA total. Both are suitable for battery-powered applications where power efficiency is critical. However, both sacrifice bandwidth (90 kHz and 300 kHz respectively) compared to the LMV934IDRG4's 1.5 MHz.

Q10: Can I mix substitute parts in the same design (e.g., use LMV934MAX/NOPB in some circuits and MCP6474T-E/SL in others)?

A: Mixing different amplifier types in the same design is not recommended unless each amplifier serves a distinct functional role with different performance requirements. Mixing introduces design complexity, complicates testing and troubleshooting, and increases inventory management overhead. For consistency and maintainability, select a single substitute part for all four-channel amplifier requirements in a given design.

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