LMV824IDRG4 Equivalent & Substitute Parts

Part Overview

The LMV824IDRG4 is a general-purpose operational amplifier featuring four independent circuits in a 14-SOIC surface-mount package. Manufactured by Texas Instruments, this rail-to-rail amplifier operates across a 2.5V to 5.5V supply range with a slew rate of 1.9V/µs and gain bandwidth product of 5.5 MHz. The device is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. Suitable alternatives must maintain functional compatibility while meeting current availability and compliance requirements.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	1.9	V/µs
Gain Bandwidth Product	5.5	MHz
Current - Input Bias	40	nA
Voltage - Input Offset	1	mV
Current - Supply	1	mA
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	2.5	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

Substitution of the LMV824IDRG4 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Package type: 14-SOIC surface-mount configuration
Circuit count: Four independent amplifier circuits
Output configuration: Rail-to-rail operation
Supply voltage range: Minimum 2.5V, maximum 5.5V
Operating temperature range: -40°C to 125°C (preferred) or -40°C to 85°C (acceptable)
Amplifier classification: General-purpose or CMOS topology

Secondary Compatibility Parameters:

Slew rate: 1.9V/µs or higher
Gain bandwidth product: 5.5 MHz or higher
Input bias current: 40 nA or lower
Input offset voltage: 1 mV or lower
Output current per channel: 45 mA or higher

Substitute parts are grouped into two categories: direct functional equivalents from the LMV824 family and cross-manufacturer alternatives meeting all electrical specifications within the 14-SOIC package constraint.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (mV)	Supply Current (mA)	Output Current (mA)	Temp Range (°C)	Package
LMV824IDRG4	Texas Instruments	Obsolete	1.9	5.5	40	1	1	45	-40 to 125	14-SOIC
LMV824M/NOPB	Texas Instruments	Active	2	5.6	40	1	1	45	-40 to 85	14-SOIC
LMV824MX/NOPB	National Semiconductor	Active	2	5.6	40	1	1	45	-40 to 85	14-SOIC
AD8604ARZ	Analog Devices Inc.	Active	6	8.4	0.0002	0.08	0.75	50	-40 to 125	14-SOIC
LMV824AIDT	STMicroelectronics	Active	1.9	5.5	60	0.8	0.3	70	-40 to 125	14-SOIC
LMV824DR2G	onsemi	Active	2	5.6	119	1	1	45	-40 to 85	14-SOIC
LMV824IDT	STMicroelectronics	Active	1.9	5.5	60	3.5	0.3	70	-40 to 125	14-SOIC
MCP619-I/SL	Microchip Technology	Active	0.08	0.19	0.005	0.15	0.019	0.017	-40 to 85	14-SOIC
MCP619T-I/SL	Microchip Technology	Active	0.08	0.19	0.005	0.15	0.019	0.017	-40 to 85	14-SOIC
MCP6284-E/SL	Microchip Technology	Active	2.5	5	0.001	3	0.45	25	-40 to 125	14-SOIC
MCP6284T-E/SL	Microchip Technology	Active	2.5	5	0.001	3	0.45	25	-40 to 125	14-SOIC

Engineering Selection Recommendations

Tier 1 - Direct LMV824 Family Equivalents (Preferred):

LMV824M/NOPB and LMV824MX/NOPB represent the closest functional equivalents to the obsolete LMV824IDRG4. Both maintain identical electrical specifications with marginal improvements in slew rate (2V/µs vs. 1.9V/µs) and gain bandwidth product (5.6 MHz vs. 5.5 MHz). The primary trade-off is reduced operating temperature range (-40°C to 85°C versus -40°C to 125°C). LMV824MX/NOPB includes AEC-Q100 automotive qualification, suitable for applications requiring automotive-grade reliability. Both parts are ROHS3 compliant with unlimited moisture sensitivity rating.

Tier 2 - STMicroelectronics LMV824 Variants (Extended Temperature):

LMV824AIDT and LMV824IDT maintain the full -40°C to 125°C operating range with identical slew rate and gain bandwidth product specifications. Both include AEC-Q100 automotive qualification. LMV824AIDT exhibits superior output current capability (70 mA vs. 45 mA) and lower supply current (300 µA vs. 1 mA). LMV824IDT provides identical performance with slightly higher input offset voltage (3.5 mV vs. 1 mV). These variants are suitable for extended-temperature applications requiring automotive qualification.

Tier 3 - onsemi LMV824DR2G (Cost-Optimized):

LMV824DR2G offers active product status with specifications closely matching the original part. Operating temperature range is limited to -40°C to 85°C. Input bias current is elevated (119 nA vs. 40 nA), which may impact precision applications. Moisture sensitivity level is MSL 3 (168 hours), requiring controlled storage conditions. This variant is suitable for cost-sensitive applications with relaxed temperature requirements.

Tier 4 - Cross-Manufacturer Alternatives:

AD8604ARZ (Analog Devices) provides superior performance characteristics: 6V/µs slew rate, 8.4 MHz gain bandwidth product, and exceptional input bias current (0.2 pA). Full -40°C to 125°C temperature range is maintained. This CMOS topology is suitable for precision applications requiring low input bias current and extended bandwidth. Higher output current capability (50 mA) accommodates demanding load conditions.

MCP6284-E/SL and MCP6284T-E/SL (Microchip Technology) offer general-purpose amplification with 2.5V/µs slew rate and 5 MHz gain bandwidth product. Extremely low input bias current (1 pA) and full -40°C to 125°C temperature range support precision instrumentation. Reduced output current per channel (25 mA) limits high-current applications. These parts are suitable for low-power, precision measurement circuits.

Not Recommended for Direct Substitution:

MCP619-I/SL and MCP619T-I/SL exhibit significantly reduced bandwidth (190 kHz) and slew rate (0.08V/µs), making them unsuitable for applications requiring the original part's dynamic performance. These low-power CMOS amplifiers are appropriate only for DC or very low-frequency signal conditioning where bandwidth constraints are acceptable.

Frequently Asked Questions (FAQ)

Q: Can LMV824M/NOPB directly replace LMV824IDRG4 in all applications?

A: LMV824M/NOPB is functionally compatible for most applications. The primary consideration is operating temperature range: LMV824M/NOPB operates to 85°C maximum, while the original part extends to 125°C. Applications operating above 85°C ambient temperature require alternative selection. Electrical performance is superior or equivalent across all specified parameters.

Q: What is the significance of the different packaging designations (IDRG4, M/NOPB, IDT)?

A: These designations indicate different manufacturing sources and packaging formats. IDRG4 represents the original Texas Instruments part in tape-and-reel format. M/NOPB indicates Texas Instruments tube packaging. IDT and AIDT represent STMicroelectronics variants in cut-tape or digi-reel format. All maintain identical 14-SOIC package dimensions and pin configurations, ensuring mechanical compatibility.

Q: Why do some substitutes show lower supply current specifications?

A: Supply current specifications reflect total quiescent current across all four amplifier circuits. STMicroelectronics variants (LMV824AIDT, LMV824IDT) specify 300 µA total, while Texas Instruments and onsemi variants specify 1 mA. Lower supply current indicates more efficient circuit design. Application power budgets should account for these differences, particularly in battery-powered systems.

Q: Is AEC-Q100 qualification required for my application?

A: AEC-Q100 automotive qualification is required only for automotive or safety-critical applications. LMV824MX/NOPB, LMV824AIDT, and LMV824IDT include this qualification. For consumer or industrial applications without automotive requirements, non-qualified alternatives are acceptable and may offer cost advantages.

Q: Can AD8604ARZ replace LMV824IDRG4 in precision measurement circuits?

A: AD8604ARZ is electrically compatible and offers superior precision characteristics: input bias current of 0.2 pA (versus 40 nA) and input offset voltage of 80 µV (versus 1 mV). However, the CMOS topology differs from the original bipolar design. Comprehensive circuit validation is required to confirm performance equivalence in specific applications, particularly regarding input impedance and frequency response characteristics.

Q: What are the implications of MSL (Moisture Sensitivity Level) differences?

A: MSL 1 (unlimited) indicates no moisture sensitivity restrictions; parts may be stored indefinitely without desiccant protection. MSL 3 (168 hours) requires controlled storage with desiccant and limits shelf life to 168 hours after package opening. LMV824DR2G (MSL 3) requires more stringent handling procedures than alternatives rated MSL 1. Manufacturing environments must implement appropriate moisture control protocols.

Q: Are there pin-compatible alternatives outside the LMV824 family?

A: Yes. AD8604ARZ, MCP6284 series, and MCP619 series maintain identical 14-SOIC pinout and are pin-compatible. However, electrical characteristics vary significantly. MCP619 variants exhibit substantially reduced bandwidth unsuitable for general-purpose amplification. AD8604ARZ and MCP6284 series are appropriate for applications tolerating CMOS topology differences.

Q: What inventory considerations apply to substitute selection?

A: Current inventory levels vary significantly: MCP6284-E/SL (35,635 pcs), LMV824MX/NOPB (25,400 pcs), and LMV824IDT (20,755 pcs) offer substantial availability. LMV824M/NOPB (1,360 pcs) and LMV824DR2G (1,300 pcs) have limited stock. For high-volume production, parts with higher inventory levels reduce supply chain risk.

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