LM224ADR Equivalent & Substitute Parts

Part Overview

The LM224ADR is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in 14-SOIC surface mount packaging. This device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. The LM224ADR serves applications requiring low-cost, general-purpose amplification across industrial and commercial temperature ranges from -25°C to 85°C. Substitute parts are identified for applications requiring extended temperature operation, alternative packaging formats, or specific performance characteristics within compatible electrical parameters.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Slew Rate	0.5	V/µs
Gain Bandwidth Product	1.2	MHz
Current - Input Bias	15	nA
Voltage - Input Offset	2	mV
Current - Supply (x4 Channels)	1.4	mA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	-25 to 85	°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

Substitute parts for the LM224ADR are classified based on strict electrical and mechanical compatibility within the following criteria:

Primary Substitution Parameters:

Number of circuits: 4 (mandatory)
Amplifier type: General Purpose (mandatory)
Package type: 14-SOIC or equivalent 14-pin surface mount (mandatory)
Voltage supply span: Minimum 3V, Maximum ≥30V (mandatory)
Mounting type: Surface Mount (mandatory)
RoHS3 compliance and MSL Level 1 (mandatory for regulatory equivalence)

Secondary Performance Parameters (allowable variation):

Slew rate: 0.05 to 0.5 V/µs
Gain bandwidth product: 100 kHz to 1.3 MHz
Input bias current: 2 to 90 nA
Supply current: 85 µA to 1.5 mA
Output current per channel: 10 to 40 mA
Operating temperature: -40°C to 125°C (extended ranges acceptable)

Substitutes are grouped by manufacturer and product status to facilitate selection based on availability and application requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Supply Current (mA)	Output Current (mA)	Temp Range (°C)	Package	Inventory (Pcs)
LM224ADR	Texas Instruments	Active	0.5	1.2	15	1.4	30	-25 to 85	14-SOIC	133500
LM2902DR	Rohm Semiconductor	Obsolete	0.3	1.2	20	1.0	30	-40 to 125	14-SOPJ	90223
LM324AM/NOPB	Texas Instruments	Active	—	1.0	45	1.5	40	0 to 70	14-SOIC	105684
LM324AMX/NOPB	Texas Instruments	Active	—	1.0	45	1.5	40	0 to 70	14-SOIC	36756
LM324M/NOPB	Texas Instruments	Active	—	1.0	45	1.5	40	0 to 70	14-SOIC	1922
LP324M/NOPB	Texas Instruments	Active	0.05	0.1	2	0.085	10	0 to 70	14-SOIC	2000
LP324MX/NOPB	Texas Instruments	Active	0.05	0.1	2	0.085	10	0 to 70	14-SOIC	23900
BA10324AF-E2	Rohm Semiconductor	Active	0.2	0.5	20	0.6	35	-40 to 85	14-SOP	67700
BA2902F-E2	Rohm Semiconductor	Active	0.2	0.5	20	0.7	30	-40 to 125	14-SOP	5300
LM224ADT	STMicroelectronics	Active	0.4	1.3	20	1.5	40	-40 to 105	14-SO	34870
LM224DR2G	onsemi	Active	—	1.0	90	—	40	-25 to 85	14-SOIC	105200

Engineering Selection Recommendations

Active Product Status Substitutes (Preferred for New Designs):

LM324AMX/NOPB and LM324AM/NOPB (Texas Instruments, LinCMOS™ series) maintain full Active status with RoHS3 compliance. These parts operate within the 3V to 32V supply range and provide 1.0 MHz gain bandwidth product. Operating temperature range is 0°C to 70°C, which is narrower than the LM224ADR but suitable for commercial applications. These devices are available in standard 14-SOIC packaging with high inventory levels.

LP324MX/NOPB and LP324M/NOPB (Texas Instruments) are Active products offering ultra-low power consumption (85 µA supply current) with 100 kHz gain bandwidth product. These are suitable for battery-powered or low-power applications where the reduced bandwidth is acceptable. Supply voltage range extends to 32V maximum.

BA10324AF-E2 and BA2902F-E2 (Rohm Semiconductor) are Active products in 14-SOP packaging with extended temperature operation to -40°C. BA2902F-E2 extends to 125°C maximum operating temperature, providing broader thermal coverage than the LM224ADR.

LM224ADT (STMicroelectronics) is an Active product with 1.3 MHz gain bandwidth product and -40°C to 105°C operating range, offering extended low-temperature operation.

LM224DR2G (onsemi) maintains Active status with identical temperature range to the LM224ADR (-25°C to 85°C) and standard 14-SOIC packaging.

Obsolete Product Status:

LM2902DR (Rohm Semiconductor) is classified as Obsolete. While electrically compatible, this part should not be selected for new designs due to discontinued manufacturing status.

Packaging Considerations:

All substitute parts maintain 14-pin surface mount configuration. Standard 14-SOIC (0.154" width) is the primary package across most substitutes. BA10324AF-E2 and BA2902F-E2 use 14-SOP (0.173" width), which is mechanically compatible with 14-SOIC footprints but with slightly wider body dimension.

Compliance and Regulatory:

All listed substitutes maintain RoHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the LM224ADR regulatory profile. REACH status is Unaffected for all parts. ECCN classification is EAR99 across all substitutes.

Frequently Asked Questions (FAQ)

Q: Can LM324AMX/NOPB directly replace LM224ADR in existing designs?

A: LM324AMX/NOPB is electrically compatible within the 4-circuit general-purpose amplifier category and shares the 14-SOIC package footprint. However, the operating temperature range is narrower (0°C to 70°C versus -25°C to 85°C). Verify that your application does not require operation below 0°C or above 70°C. Both devices are RoHS3 compliant with MSL Level 1 rating.

Q: What is the difference between LP324MX/NOPB and LM224ADR?

A: LP324MX/NOPB is a low-power variant with significantly reduced supply current (85 µA versus 1.4 mA) and lower gain bandwidth product (100 kHz versus 1.2 MHz). Select LP324MX/NOPB only for applications where bandwidth requirements are ≤100 kHz and power consumption is critical. Both operate across 3V to 32V supply range.

Q: Why is LM2902DR listed as Obsolete?

A: LM2902DR is classified as Obsolete by Rohm Semiconductor, indicating discontinued manufacturing. While inventory remains available, this part should not be selected for new product designs due to long-term supply uncertainty. Active alternatives include LM224ADT, LM324AMX/NOPB, or BA2902F-E2.

Q: Are BA10324AF-E2 and BA2902F-E2 pin-compatible with LM224ADR?

A: Yes, both Rohm devices are pin-compatible 4-circuit general-purpose amplifiers in 14-pin surface mount packages. BA10324AF-E2 operates -40°C to 85°C, while BA2902F-E2 extends to 125°C. The package body width is 0.173" (4.40mm) versus 0.154" (3.90mm) for standard 14-SOIC, but both fit standard 14-SOIC PCB footprints.

Q: What is the temperature range advantage of LM224ADT?

A: LM224ADT (STMicroelectronics) operates from -40°C to 105°C, extending both the low and high temperature limits compared to LM224ADR (-25°C to 85°C). This device is suitable for industrial and automotive applications requiring broader thermal coverage. Gain bandwidth product is 1.3 MHz, slightly higher than LM224ADR.

Q: Can I use LM224DR2G as a direct substitute?

A: LM224DR2G (onsemi) maintains the same temperature range as LM224ADR (-25°C to 85°C) and uses identical 14-SOIC packaging. It is electrically compatible as a 4-circuit general-purpose amplifier. Note that input bias current is higher (90 nA versus 15 nA), which may affect precision applications requiring very low input current.

Q: Which substitute offers the lowest power consumption?

A: LP324MX/NOPB offers the lowest supply current at 85 µA (versus 1.4 mA for LM224ADR). This device is suitable for battery-powered applications where power efficiency is prioritized over bandwidth. Gain bandwidth product is reduced to 100 kHz.

Q: Are all substitutes RoHS3 compliant?

A: Yes, all listed substitute parts are RoHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the LM224ADR regulatory profile. REACH status is Unaffected for all parts.

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