JRC4558

The JRC4558 is a dual operational amplifier (op-amp) from New Japan Radio (NJR), widely used in audio and signal processing circuits. It features:
- Dual op-amp design (two amplifiers in one IC).
- Low noise and high gain bandwidth (3 MHz typical).
- Wide supply voltage range (±3V to ±18V).
- Low input offset voltage (1 mV max).
Commonly found in audio preamps, filters, and effects pedals, it’s a cost-effective alternative to the TL072 or NE5532, though with slightly higher noise. Its JFET-input variants (e.g., NJM4558) offer improved performance.
Key Applications:
- Guitar effects (e.g., distortion, EQ).
- Active filters.
- Line-level amplification.
A reliable, budget-friendly choice for general-purpose analog circuits.

The JRC4558 (NJM4558) is a dual op-amp with equivalents like:
- TL072 (lower noise, JFET input)
- NE5532 (higher performance, audio-grade)
- LM833 (low-noise, audio)
- RC4558 (generic version)
- MC4558 (Motorola/ON Semi variant)
- BA4558 (Rohm's version)
Check specs for exact compatibility, as noise, slew rate, and voltage ranges may vary. Most are pin-compatible.

The JRC4558 is a dual operational amplifier (op-amp) with the following key features:
- Dual Op-Amp: Contains two independent op-amps in a single 8-pin package.
- Wide Supply Voltage Range: Operates from ±3V to ±18V (dual supply) or 6V to 36V (single supply).
- High Slew Rate: 1.5V/µs for fast signal response.
- Low Input Bias Current: 500nA max, reducing input errors.
- Low Noise: Suitable for audio and signal processing.
- Unity-Gain Stable: Works reliably at a gain of 1.
- High Output Drive: Can drive 10mA load current.
- Common-Mode Rejection Ratio (CMRR): 70dB min, reducing noise interference.
- Temperature Range: -40°C to +85°C for industrial use.
Commonly used in audio amplifiers, filters, and signal conditioning circuits due to its balance of performance and cost. Compatible with TL072 and NE5532 in some applications.

The JRC4558 is a dual operational amplifier (op-amp) IC with 8 pins in a standard DIP or SOP package.
Pin Functions:
1. Output A (Pin 1) – Output of Op-Amp A.
2. Inverting Input A (Pin 2) – Negative input for Op-Amp A.
3. Non-Inverting Input A (Pin 3) – Positive input for Op-Amp A.
4. V- (Pin 4) – Negative power supply (or ground in single-supply mode).
5. Non-Inverting Input B (Pin 5) – Positive input for Op-Amp B.
6. Inverting Input B (Pin 6) – Negative input for Op-Amp B.
7. Output B (Pin 7) – Output of Op-Amp B.
8. V+ (Pin 8) – Positive power supply.
The JRC4558 is commonly used in audio circuits, filters, and signal conditioning due to its low noise and wide bandwidth.

The JRC4558 is manufactured by New Japan Radio Co., Ltd. (NJR), a Japanese semiconductor company specializing in analog and mixed-signal ICs. Founded in 1959, NJR is known for producing high-quality operational amplifiers, audio ICs, and other analog components. The JRC4558 is a widely used dual operational amplifier, commonly found in audio and signal processing applications. NJR is recognized for its precision engineering and reliability in the electronics industry.

The JRC4558 is a dual operational amplifier (op-amp) commonly used in:
1. Audio Equipment – Preamplifiers, tone controls, and mixers due to its low noise and wide bandwidth.
2. Signal Conditioning – Filters, integrators, and buffers in instrumentation circuits.
3. Consumer Electronics – Used in TVs, radios, and audio systems for amplification.
4. Industrial Control – Signal processing in automation and sensor interfaces.
5. Medical Devices – Low-power amplification in portable equipment.
Its low cost, reliability, and moderate performance make it suitable for general-purpose analog applications.

The JRC4558 is typically available in a DIP-8 (Dual In-line Package) or SOIC-8 (Small Outline Integrated Circuit) package. These are the most common package types for this dual operational amplifier, suitable for through-hole (DIP) or surface-mount (SOIC) PCB assembly. Other variants may exist, but these are standard.