Texas Instruments RC4558PSR

Overview

RC4558PSR from Texas Instruments is a dual general-purpose operational amplifier designed for audio signal conditioning in bipolar-supply systems. It delivers 4MHz gain-bandwidth product, 6.5nV/√Hz input voltage noise at 10kHz, 0.0001% THD+N at 1kHz, ±14.1V output swing (RL = 10kΩ), and operates across ±5V to ±15V supply rails. It is used in AV receivers and professional audio mixers where low distortion and matched channel performance are critical.

For engineers reviewing the RC4558PSR datasheet, RC4558PSR pinout, RC4558PSR application, or RC4558PSR equivalent, key selection considerations include its dual-channel matching, wide common-mode input range (±14V), internal frequency compensation, rail-compatible output swing, and suitability for voltage-follower and noninverting amplifier topologies in analog audio front-ends.

Technical Context

The RC4558PSR integrates two independent high-fidelity op-amp cores sharing a single SOIC-8 package. Each amplifier features internally compensated dominant-pole architecture enabling unity-gain stability without external components, and supports both dual-supply (±5V to ±15V) and single-supply operation with appropriate biasing.

Its functional block diagram shows fully differential inputs (IN+, IN−), rail-swing-capable outputs, and dedicated VCC+ and VCC− pins - confirming true dual-supply topology. The device exhibits matched gain and phase response between channels, enabling stereo signal paths and differential output generation without inter-channel crosstalk degradation beyond 120dB at 10kHz.

Key Specifications

Pinout & Package

RC4558PSR is packaged in an 8-pin SOP (Small Outline Package) with 6.2mm × 7.8mm footprint, optimized for surface-mount assembly in space-constrained audio PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual general-purpose op-amp applications.

Compared with NE5532DR and LM833N, RC4558PSR offers the best balance of low noise, low distortion, and moderate power consumption in standard commercial audio environments - making it ideal for cost-sensitive, space-constrained consumer audio designs where ±70°C operation suffices.

Availability

RC4558PSR is available at Aetrix Electronics and suitable for AV receivers, professional audio mixers, and soundbars requiring stable component supply, long-term production continuity, and RoHS-compliant packaging.

Supply support for RC4558PSR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision op-amps and audio signal chain solutions.

The RC4558PSR belongs to TI's legacy general-purpose op-amp product line, engineered specifically for high-fidelity analog audio signal conditioning in consumer and pro-audio equipment where low distortion, matched dual-channel performance, and robust DC specifications are essential.

FAQ

What is the maximum supply voltage for RC4558PSR?

The absolute maximum supply voltage for RC4558PSR is ±18V, but the recommended operating range is ±5V to ±15V. Operation beyond ±15V risks exceeding thermal limits and degrading long-term reliability. The RC4558PSR datasheet specifies electrical characteristics at ±15V, and the device's internal protection structures are validated within this envelope. Always use 0.1μF ceramic bypass capacitors on both VCC+ and VCC− pins when operating RC4558PSR near its upper supply limit.

Does RC4558PSR require external compensation components?

No, RC4558PSR does not require external compensation components. It features internal frequency compensation designed for unity-gain stability across its full operating range. This eliminates the need for external capacitors or resistors in standard noninverting or inverting configurations. The RC4558PSR gain-bandwidth product remains stable at 4MHz regardless of closed-loop gain, and layout guidelines emphasize minimizing stray capacitance at the inverting input rather than adding compensation networks.

What is the input offset voltage specification for RC4558PSR?

The RC4558PSR has a typical input offset voltage of 6mV, with a maximum of 7.5mV over the full commercial temperature range (0°C to +70°C). At room temperature (25°C), the typical value is 0.3mV. This parameter directly affects DC accuracy in precision integrators or sensor amplifiers - for example, a 6mV offset at a gain of 100 introduces 0.6V error at the output. RC4558PSR's offset is untrimmed, so system-level calibration may be needed in applications demanding sub-millivolt DC precision.

Can RC4558PSR be used in single-supply applications?

Yes, RC4558PSR can be used in single-supply applications by biasing the inputs and outputs to mid-rail using a virtual ground or resistor divider. Its common-mode input range extends to within 1V of either rail, and output swing reaches within 0.9V of each supply under 10kΩ load. For example, with a +30V single supply, RC4558PSR supports input signals from +1V to +29V and delivers output from +1.1V to +28.9V. However, dual-supply operation (±15V) is preferred for symmetric audio signal handling and optimal THD+N performance.

What is the thermal resistance (RθJA) of RC4558PSR in its SOP-8 package?

The junction-to-ambient thermal resistance (RθJA) of RC4558PSR in the PS (SOP-8) package is 122.9°C/W, as specified in the official TI datasheet SLOS073H. This value assumes standard JEDEC 2-layer board conditions. In practice, adding copper pour and thermal vias beneath the exposed pad (if present) or increasing PCB copper area can reduce effective RθJA by 20–40%. Since RC4558PSR draws 5.6mA per amplifier, total power dissipation is ~84mW at ±15V - resulting in a worst-case junction temperature rise of ~10.3°C above ambient, well within the 150°C maximum rating.