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NJM4558L
NJM4558L
| Part Number | NJM4558L |
|---|---|
| Manufacturer | Nisshinbo Micro Devices (Formerly JRC / NJR) |
| Category | Integrated Circuits (ICs) > Linear – Amplifiers – Instrumentation, OP Amps, Buffer Amps |
| Description | High-performance dual operational amplifier featuring internal frequency compensation, low input noise voltage, and high voltage gain, housed in an 8-pin Single-in-Line (SIP) package optimized for audio and industrial signaling. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The NJM4558L is a monolithic dual op-amp manufactured by Nisshinbo Micro Devices (formerly JRC/New Japan Radio). Equipped with built-in frequency compensation on a single silicon die, it delivers matched input parameters, high voltage gain and low noise output. It supports wide differential input voltage and resists oscillation even at extreme closed-loop gains. Packaged in compact SIP-8 single-in-line through-hole form, it saves PCB horizontal space for dense multilayer boards, perfect for audio preamps, effect pedals, analog filters, industrial signal conditioning and feedback control circuits.
Core Advantages
Excellent Audio and Noise Performance
Delivers clean, low-distortion audio pre-amplification with an optimized input noise voltage profile, keeping residual system hiss and hum artifacts out of high-fidelity signal pathways.
Space-Saving SIP-8 Vertical Layout
Features an inline single-row pin architecture that drastically reduces the horizontal PCB trace space requirement compared to standard DIP or SOP layouts, facilitating higher circuit board layout density.
No External Compensation Required
Integrates robust internal frequency compensation networks, preventing unwanted parasitic oscillation across its operational bandwidth and minimizing peripheral discrete capacitor requirements.
Broad Voltage Compatibility and Pin Protection
Operates reliably across wide dual-supply operational rails ±4V to ±18V while including built-in short-circuit terminal protection to defend against sudden wiring or output mismatches.
Key Specifications
| Brand | Nisshinbo Micro Devices / JRC |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free Standard (Eco-Friendly Material Assembly Matrix) |
| EDA/CAD Model | 3D Model & PCB Footprint Available upon request |
| Warranty | 1-Year Standard Factory Warranty |
| Package / Case | SIP-8 |
| Mounting Type | Through-Hole Technology (THT) |
| Surface Marking / Silkscreen | NJM4558L Marking |
| Amplifier Core Type | Dual Operational Amplifier (2 Independent Channels) |
| Operating Voltage Range (V+ / V-) | ±4V to ±18V (Dual Supply) or +8V to +36V (Single Rail Configuration) |
| Max Supply Voltage Span | 30V Recommended Operating, 36V Absolute Maximum |
| Large Signal Voltage Gain (AV) | 100 dB Typical |
| Input Resistance (Rin) | 2 MΩ Typical |
| Slew Rate (SR) | 1.0 V/μs Typical |
| Gain Bandwidth Product (GBW) | 3.0 MHz Typical |
| Equivalent Input Noise Voltage | 1.4 μVrms (Typical over standard audio testing filters) |
| Input Offset Voltage (Vos) | 6 mV Maximum |
| Input Bias Current (Ib) | 100 nA Typical |
| Input Offset Current (Ios) | 20 nA Typical |
| Quiescent Supply Current (Iq) | 4 mA Typical (Dual Channel Total) |
| Output Short-Circuit Protection | Internal Built-in Short Circuit Current Limit |
| Operating Temperature Range | -40°C to +85°C Industrial / Commercial Grade |
Typical Applications
- Professional Audio Mixers, Studio Consoles, Acoustic Preamplifiers, and High-Fidelity Equalizers
- Guitar Effects Pedals, Overdrive Stompboxes, and Electronic Musical Instrument Synthesizers
- Active Electronic Filter Topologies (Low-Pass, High-Pass, Band-Pass Sound Shaping Networks)
- Industrial Process Control Transducers, Voltage Followers, and Sensor Signal Buffering Blocks
- Analog Oscilloscopes, Multi-Meters, and Laboratory Signal Acquisition Measurement Sub-circuits
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: Is your currently available stock of the NJM4558L op-amp 100% genuine and original?
A: Yes, we guarantee that all NJM4558L integrated circuits in our stock are 100% brand-new, original factory components from Nisshinbo Micro Devices (JRC). Every batch is strictly inspected, anti-statically sealed, and traced back directly to the authorized production pipeline.
Q2: What is the primary physical layout difference between the NJM4558L and the NJM4558D / NJM4558M?
A: The fundamental difference is the mechanical package format. The “L” suffix denotes the 8-pin Single-in-Line (SIP-8) package where pins are arranged vertically in a single line. The “D” suffix represents the standard Dual-in-Line (DIP-8) package, and the “M” suffix indicates the Surface-Mount (DMP-8/SOP-8) package. Internally, the silicon op-amp cores are identical.
Q3: Why is the NJM4558 architecture widely preferred over other op-amps in audio processing and analog overdrive designs?
A: The NJM4558 series delivers balanced sound characteristics with moderate distortion suited for audio tone shaping. Built-in internal compensation eliminates extra compensation capacitors, simplifying circuit design. Its wide supply voltage range adapts to portable audio gear and industrial equipment, while short-circuit output protection improves circuit stability. Compared to many general-purpose op amps, it achieves lower audio band noise, making it a mainstream choice for guitar pedals, studio preamps and analog audio filter circuits.
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