LM224DR2G Equivalent & Substitute Parts

Part Overview

The LM224DR2G is a general-purpose operational amplifier integrated circuit manufactured by onsemi, configured as a 4-circuit device in a 14-SOIC surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. The LM224DR2G operates across a supply voltage range of 3V to 32V with an operating temperature range of -25°C to 85°C, making it suitable for general-purpose amplification applications requiring moderate bandwidth and low input bias current characteristics.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for components with enhanced performance characteristics or extended operating ranges.

Key Parameters

Parameter	LM224DR2G (Main Part)
Manufacturer	onsemi
Number of Circuits	4
Amplifier Type	General Purpose
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Gain Bandwidth Product	1 MHz
Current - Input Bias	90 nA
Voltage - Input Offset	2 mV
Current - Output / Channel	40 mA
Voltage - Supply Span (Min)	3 V
Voltage - Supply Span (Max)	32 V
Operating Temperature	-25°C ~ 85°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LM224DR2G is determined by the following critical parameters that must be maintained or exceeded:

Mandatory Compatibility Parameters:

Number of Circuits: 4 (all substitutes must provide 4 independent amplifier circuits)
Amplifier Type: General Purpose (functional equivalence required)
Package / Case: 14-SOIC form factor (0.154", 3.90mm Width) for PCB layout compatibility
Mounting Type: Surface Mount (manufacturing process compatibility)
Voltage - Supply Span: Minimum 3V to maximum 32V (or higher maximum rating)
RoHS3 Compliance: Required for regulatory and supply chain requirements
Moisture Sensitivity Level: MSL 1 (Unlimited) preferred for storage and handling

Performance Parameters (Equal or Better):

Gain Bandwidth Product: 1 MHz or higher
Current - Input Bias: 90 nA or lower
Voltage - Input Offset: 2 mV or lower
Current - Output / Channel: 40 mA or higher
Operating Temperature Range: Must encompass or exceed -25°C to 85°C

Substitutes are grouped into three categories: Direct Equivalents (identical base product number with different packaging or manufacturer), Compatible Alternatives (same circuit count and package with enhanced specifications), and Upgrade Options (extended temperature range or improved performance characteristics).

Parameter Comparison

Parameter	LM224DR2G (onsemi)	LM124DR (TI)	LM224D (STM)	LM224DR (UMW)	LM224DRG3 (TI)	LM224DT (STM)	LM224KDR (TI)	LM124D (STM)	LM124DG4 (TI)	LM124DRG4 (TI)
Number of Circuits	4	4	4	4	4	4	4	4	4	4
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Gain Bandwidth Product	1 MHz	1.2 MHz	1.2 MHz	1.2 MHz	1.2 MHz	1.3 MHz	1.2 MHz	1.2 MHz	1.2 MHz	1.2 MHz
Current - Input Bias	90 nA	20 nA	20 nA	20 nA	20 nA	20 nA	20 nA	20 nA	20 nA	20 nA
Voltage - Input Offset	2 mV	3 mV	2 mV	3 mV	3 mV	2 mV	3 mV	2 mV	3 mV	3 mV
Current - Output / Channel	40 mA	30 mA	40 mA	30 mA	30 mA	40 mA	30 mA	30 mA	30 mA	30 mA
Voltage - Supply Span (Min)	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V
Voltage - Supply Span (Max)	32 V	30 V	30 V	32 V	30 V	30 V	30 V	30 V	30 V	30 V
Operating Temperature (Min)	-25°C	-55°C	-40°C	-20°C	-25°C	-40°C	-25°C	-55°C	-55°C	-55°C
Operating Temperature (Max)	85°C	125°C	105°C	85°C	85°C	105°C	85°C	125°C	125°C	125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Last Time Buy	Active	Active	Obsolete	Last Time Buy	Discontinued at DiGi Electronics

Engineering Selection Recommendations

Primary Direct Substitutes (Recommended for New Designs):

LM224DT (STMicroelectronics) and LM224DR (UMW) are the preferred direct substitutes for the LM224DR2G. Both maintain the 4-circuit general-purpose amplifier configuration in 14-SOIC packaging with full RoHS3 compliance and MSL 1 rating. The LM224DT offers enhanced gain bandwidth product (1.3 MHz) and extended operating temperature range (-40°C to 105°C), providing superior performance margins. The LM224DR from UMW maintains identical supply voltage range (3V to 32V) and operating temperature span (-20°C to 85°C) matching the original specification.

Secondary Compatible Alternatives:

LM224DRG3 (Texas Instruments) and LM224KDR (Texas Instruments) are compatible alternatives with Active and Active product status respectively. Both provide 1.2 MHz gain bandwidth product and maintain the required 14-SOIC package format. These parts are suitable for applications where the original onsemi part becomes unavailable, with the understanding that maximum supply voltage is limited to 30V.

Extended Temperature Range Upgrades:

LM124DR (Texas Instruments), LM124D (STMicroelectronics), LM124DG4 (Texas Instruments), and LM124DRG4 (Texas Instruments) provide extended operating temperature ranges (-55°C to 125°C) suitable for industrial and automotive applications. These parts feature differential output configuration and maintain 1.2 MHz gain bandwidth product. Note that LM124D carries Obsolete status, LM124DG4 is Last Time Buy, and LM124DRG4 is Discontinued at DiGi Electronics; these should be selected only when extended temperature performance is mandatory and current availability is confirmed.

Compliance and Regulatory Considerations:

All listed substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with modern supply chain requirements and manufacturing processes. REACH Unaffected status is consistent across all parts, confirming regulatory alignment for international distribution.

Frequently Asked Questions (FAQ)

Q: Can LM224DT replace LM224DR2G in existing designs without PCB modification?

A: Yes. Both parts use identical 14-SOIC (0.154", 3.90mm Width) surface mount packaging. Pin-to-pin compatibility is maintained. However, verify that your circuit design can accommodate the maximum supply voltage limit of 30V for LM224DT, compared to 32V for the original LM224DR2G.

Q: What is the difference between LM224 and LM124 series parts?

A: The LM224 series is the primary general-purpose amplifier configuration. The LM124 series provides differential output configuration and extended operating temperature range (-55°C to 125°C). Selection depends on whether your application requires differential outputs and whether extended temperature operation is necessary.

Q: Why do some substitute parts show "Last Time Buy" or "Discontinued" status?

A: Product status indicates manufacturer lifecycle stage. Active status parts are in full production. Last Time Buy indicates the manufacturer has announced end-of-life with a final purchase window. Discontinued at DiGi Electronics indicates distributor discontinuation but may remain available through other channels. For new designs, select parts with Active status to ensure long-term supply availability.

Q: Are there packaging format alternatives to 14-SOIC?

A: The provided substitute list includes only 14-SOIC surface mount packages. All listed parts maintain this package format for PCB layout compatibility. If alternative packaging formats (such as DIP or different SOIC variants) are required, additional research beyond this reference is necessary.

Q: What is the significance of the 90 nA input bias current in the LM224DR2G compared to 20 nA in substitutes?

A: The LM224DR2G specifies 90 nA input bias current, while all listed substitutes specify 20 nA. This represents improved input bias current performance in the substitute parts. For applications sensitive to input bias current effects, the lower 20 nA specification of substitute parts provides better performance margins. Verify that your circuit design does not depend on the higher 90 nA specification.

Q: Can LM224DR2G be used in applications requiring -55°C minimum operating temperature?

A: No. The LM224DR2G operates from -25°C minimum. For applications requiring -55°C operation, select LM124DR, LM124D, LM124DG4, or LM124DRG4, which all specify -55°C minimum operating temperature. Confirm product availability status before design commitment.

Q: What is the impact of different slew rates among substitute parts?

A: Slew rate values are provided for substitute parts (ranging from 0.4V/µs to 500mV/µs) but not specified for the LM224DR2G. Slew rate determines the maximum rate of output voltage change. Higher slew rates support faster signal transitions. For applications with specific slew rate requirements, compare the substitute part's slew rate against your circuit bandwidth and signal characteristics.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 Compliant status, ensuring compatibility with modern manufacturing and supply chain requirements. This compliance is consistent across all manufacturers represented (onsemi, Texas Instruments, STMicroelectronics, UMW).

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