NJM4580D Equivalent & Substitute Parts

Part Overview

The NJM4580D is a dual-channel audio amplifier integrated circuit manufactured by Nisshinbo Micro Devices Inc., housed in an 8-DIP through-hole package. This device is classified as "Not For New Designs," indicating it has reached end-of-life status. The part delivers audio amplification with a 15 MHz gain-bandwidth product and operates across a wide supply voltage range of 4V to 36V, making it suitable for legacy audio applications and equipment requiring dual-channel amplification.

Due to its obsolete status, equivalent substitute parts are necessary for design continuity, repair operations, and production support of existing systems utilizing the NJM4580D.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Audio	—
Number of Circuits	2	—
Slew Rate	5	V/µs
Gain Bandwidth Product	15	MHz
Current - Input Bias	100	nA
Voltage - Input Offset	500	µV
Current - Supply	6	mA
Current - Output / Channel	50	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	RoHS Compliant	—

Substitute Part Grouping Explanation

Substitution of the NJM4580D is determined by strict alignment of the following critical parameters:

Package Compatibility: All substitute parts must use the 8-DIP (0.300", 7.62mm) through-hole package to ensure direct pin-for-pin compatibility and PCB mounting without redesign.

Dual-Channel Configuration: The NJM4580D contains 2 circuits. Substitute parts must maintain this dual-channel architecture to preserve circuit functionality.

Supply Voltage Range: The NJM4580D operates from 4V to 36V. Substitute parts must support this full range or a range that encompasses the application's operating voltage window.

Output Current Capability: The NJM4580D delivers 50 mA per channel. Substitute parts must meet or exceed this output current specification to handle equivalent load conditions.

Amplifier Classification: The NJM4580D is classified as an Audio amplifier. Substitutes may include audio-specific designs or general-purpose amplifiers with compatible electrical characteristics, provided they meet the electrical parameter requirements.

Thermal Operating Range: The NJM4580D operates from -40°C to 85°C. Substitute parts should support this range or a subset that covers the intended application environment.

Parameter Comparison

Parameter	NJM4580D	AD706JNZ	NE5532AP	NE5532P	NE5532PE4	OPA2277P	OPA2277PA	RC4580IP	TLE2072IP	TLE2082ACP
Amplifier Type	Audio	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	Audio	J-FET	J-FET
Number of Circuits	2	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	5	0.15	9	9	9	0.8	0.8	5	45	40
Gain Bandwidth Product (MHz)	15	0.8	10	10	10	1	1	12	10	10
Current - Input Bias (nA)	100	0.05	200	200	200	0.5	4	100	0.001	0.02
Voltage - Input Offset (µV)	500	30	500	500	500	10	20	500	300	700
Current - Supply (mA)	6	0.75	8 (x2)	8 (x2)	8 (x2)	0.79 (x2)	—	6	3.1 (x2)	3.1 (x2)
Current - Output / Channel (mA)	50	15	38	38	38	35	35	50	48	48
Voltage - Supply Span Min (V)	4	4	10	10	10	4	4	4	4.5	4.5
Voltage - Supply Span Max (V)	36	36	30	30	30	36	36	32	38	38
Operating Temperature (°C)	-40 to 85	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 85	-40 to 85	-40 to 85	-40 to 85	0 to 70
Package / Case	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP
Product Status	Not For New Designs	Active	Active	Active	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: RC4580IP

The RC4580IP is the most direct equivalent to the NJM4580D. Both are audio amplifiers with identical dual-channel configuration, matching slew rate (5V/µs), comparable gain-bandwidth product (12 MHz vs. 15 MHz), and identical output current per channel (50 mA). The RC4580IP maintains the same supply voltage range (4V to 32V, which encompasses the NJM4580D's 4V to 36V within typical application windows), identical input bias current (100 nA), and identical input offset voltage (500 µV). The RC4580IP is Active status with ROHS3 compliance and extensive inventory availability (23,700 pcs). Operating temperature range is -40°C to 85°C, matching the NJM4580D. This part provides pin-for-pin compatibility with no circuit redesign required.

Secondary Substitute: OPA2277PA

The OPA2277PA is a general-purpose dual-channel amplifier in 8-DIP package with Active product status and ROHS3 compliance. It supports the full supply voltage range (4V to 36V) and operating temperature range (-40°C to 85°C) of the NJM4580D. Output current per channel is 35 mA, which is lower than the NJM4580D's 50 mA but sufficient for many audio applications. The OPA2277PA exhibits superior input offset voltage (20 µV vs. 500 µV) and lower input bias current (4 nA vs. 100 nA), making it suitable for precision audio circuits. Slew rate is 0.8V/µs, lower than the NJM4580D, which may limit high-frequency performance in certain applications. Inventory is 2,325 pcs.

Tertiary Substitute: TLE2072IP

The TLE2072IP is a J-FET amplifier with dual channels in 8-DIP package, Active status, and ROHS3 compliance. It supports an extended supply voltage range (4.5V to 38V) and the full operating temperature range (-40°C to 85°C). The TLE2072IP offers exceptional slew rate (45V/µs) and extremely low input bias current (1 pA), making it suitable for high-speed audio and precision applications. Output current per channel is 48 mA, nearly matching the NJM4580D's 50 mA. Gain-bandwidth product is 10 MHz, lower than the NJM4580D's 15 MHz. The TLE2072IP is appropriate for applications requiring low input bias current and high slew rate performance. Inventory is 1,167 pcs.

Conditional Substitute: NE5532P

The NE5532P is a general-purpose dual-channel amplifier in 8-DIP package with Active status and ROHS3 compliance. It provides high slew rate (9V/µs) and 10 MHz gain-bandwidth product. However, the minimum supply voltage is 10V, which does not support the NJM4580D's 4V minimum operating point. The NE5532P is suitable only for applications where the supply voltage is 10V or higher. Output current per channel is 38 mA, lower than the NJM4580D's 50 mA. Operating temperature range is 0°C to 70°C, narrower than the NJM4580D's -40°C to 85°C. Inventory is 25,300 pcs. Use only when supply voltage constraints are not limiting.

Not Recommended: AD706JNZ

The AD706JNZ has a minimum supply voltage of 4V and maximum of 36V, matching the NJM4580D's range. However, output current per channel is only 15 mA, significantly below the NJM4580D's 50 mA requirement. Slew rate is 0.15V/µs, substantially lower than the NJM4580D's 5V/µs. Operating temperature range is 0°C to 70°C, narrower than the NJM4580D. This part is unsuitable for applications requiring the NJM4580D's output current and slew rate performance.

Not Recommended: OPA2277P

The OPA2277P is similar to OPA2277PA but with higher input bias current (500 pA vs. 4 nA). It maintains the same supply voltage range (4V to 36V) and operating temperature range (-40°C to 85°C). Output current per channel is 35 mA, lower than the NJM4580D's 50 mA. Slew rate is 0.8V/µs. This part is less favorable than OPA2277PA due to higher input bias current.

Not Recommended: TLE2082ACP

The TLE2082ACP is a J-FET amplifier with similar characteristics to TLE2072IP but with narrower operating temperature range (0°C to 70°C vs. -40°C to 85°C). Slew rate is 40V/µs, slightly lower than TLE2072IP. Input offset voltage is 700 µV, higher than the NJM4580D's 500 µV. Use only when the narrower temperature range is acceptable.

Not Recommended: NE5532AP and NE5532PE4

NE5532AP has the same limitations as NE5532P (minimum 10V supply voltage). NE5532PE4 is Obsolete status, making it unsuitable for new applications or long-term production support.

Frequently Asked Questions (FAQ)

Q: Can the RC4580IP directly replace the NJM4580D without circuit modification?

A: Yes. The RC4580IP is pin-for-pin compatible with the NJM4580D in the 8-DIP package. Both are dual-channel audio amplifiers with matching slew rate (5V/µs), output current (50 mA per channel), input bias current (100 nA), and input offset voltage (500 µV). The RC4580IP's supply voltage range (4V to 32V) covers the NJM4580D's typical operating window. No PCB redesign or circuit modification is required.

Q: What is the key difference between audio amplifiers and general-purpose amplifiers in this list?

A: Audio amplifiers (NJM4580D, RC4580IP) are optimized for audio frequency applications with specific slew rate and bandwidth characteristics. General-purpose amplifiers (AD706JNZ, NE5532 series, OPA2277 series) are designed for broader application ranges and may have different frequency response and noise characteristics. For audio-specific applications, audio-classified parts are preferred.

Q: Why does the NE5532P require a minimum 10V supply voltage while the NJM4580D operates at 4V?

A: The NE5532P is designed with internal circuitry that requires a minimum 10V supply for proper operation. The NJM4580D's design allows operation at lower voltages. If your application uses supply voltages below 10V, the NE5532P is not suitable. Use RC4580IP, OPA2277PA, or TLE2072IP instead.

Q: What does "Not For New Designs" mean for the NJM4580D?

A: This designation indicates the NJM4580D has reached end-of-life status and the manufacturer no longer recommends it for new product designs. However, it remains available for legacy system support and repair. For new designs, select an Active-status substitute such as RC4580IP or OPA2277PA.

Q: How do I choose between RC4580IP, OPA2277PA, and TLE2072IP?

A: Use RC4580IP for direct replacement with identical electrical performance. Use OPA2277PA if you need lower input offset voltage (20 µV vs. 500 µV) and lower input bias current (4 nA vs. 100 nA) for precision audio circuits, accepting lower output current (35 mA vs. 50 mA). Use TLE2072IP if your application requires extremely low input bias current (1 pA) and high slew rate (45V/µs) for high-speed or precision applications, accepting lower gain-bandwidth product (10 MHz vs. 15 MHz).

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are either RoHS Compliant or ROHS3 Compliant, meeting environmental and hazardous substance restrictions. The NJM4580D is RoHS Compliant. All substitutes maintain compliance with current regulatory standards.

Q: Can I use the TLE2072IP in a circuit designed for the NJM4580D if the supply voltage is 4V?

A: No. The TLE2072IP requires a minimum supply voltage of 4.5V. If your circuit operates at exactly 4V, the TLE2072IP will not function properly. Use RC4580IP, OPA2277PA, or AD706JNZ instead, all of which support 4V minimum supply voltage.

Q: What is the significance of input bias current in amplifier selection?

A: Input bias current affects circuit performance, particularly in high-impedance input circuits. Lower input bias current reduces input offset errors and improves signal fidelity. The NJM4580D has 100 nA input bias current. The TLE2072IP has 1 pA (extremely low), while the OPA2277PA has 4 nA. For precision audio applications, lower input bias current is advantageous.

Q: Is the 8-DIP package the same across all substitute parts?

A: Yes. All substitute parts use the 8-DIP (0.300", 7.62mm) through-hole package, ensuring mechanical and electrical compatibility. Pin assignments are identical, allowing direct PCB mounting without modification.

Q: Why is the output current per channel important?

A: Output current determines the maximum load the amplifier can drive. The NJM4580D delivers 50 mA per channel. Substitutes with lower output current (such as AD706JNZ at 15 mA or OPA2277PA at 35 mA) may not drive the same load impedances. Verify your application's load requirements before selecting a substitute with lower output current rating.

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