Texas Instruments RC4580IPW

Overview

RC4580IPW from Texas Instruments is a dual audio operational amplifier optimized for tone control, preamplification, and headphone drive in ±2V to ±18V supply systems. It delivers 0.8μVrms input noise, 12MHz gain-bandwidth product, 5V/μs slew rate, 0.0005% THD at 1kHz, and ±13.5V output swing into 2kΩ - enabling high-fidelity signal conditioning in compact TSSOP-8 audio interfaces.

For engineers reviewing the RC4580IPW datasheet, RC4580IPW pinout, RC4580IPW application, or RC4580IPW equivalent, key selection criteria include low-noise audio performance, dual-channel symmetry, wide supply range compatibility, and drop-in replaceability for NJM4580 and LM833 in space-constrained PCB layouts.

Technical Context

The RC4580IPW implements two matched, internally compensated voltage-feedback op-amps with rail-to-rail input common-mode range (±13.5V) and high-output-current capability (±50mA). Its 110dB CMRR and 110dB PSRR ensure robust rejection of power-supply and common-mode interference in single-ended and differential audio paths.

Designed for dual-supply operation (±2V to ±16V recommended), the device supports both inverting and noninverting configurations with unity-gain stability. Its 12MHz GBW and 5V/μs slew rate enable accurate reproduction of audio signals up to ~100kHz without phase distortion or slew-induced harmonic generation.

Key Specifications

Pinout & Package

TSSOP-8 package (3.0mm × 4.4mm body, 0.65mm pitch), thermally enhanced for audio applications with exposed pad option (not present in PW variant); RoHS-compliant, NIPDAU lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NJM4580D and LM833N, RC4580IPW provides superior noise-performance trade-off (0.8μV_rms/0.0005% THD) in the same TSSOP-8 footprint, making it optimal for space-constrained high-fidelity audio designs where channel matching and supply flexibility are critical.

Availability

RC4580IPW is available at Aetrix Electronics and suitable for audio preamplifiers, active filters, and headphone amplifier designs requiring stable component supply across industrial temperature ranges (–40°C to 125°C).

Supply support for RC4580IPW 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, embedded processing, and digital signal technologies with over 90 years of innovation in high-reliability electronic components.

The RC4580 product line targets high-fidelity audio signal conditioning, delivering low-noise, low-distortion dual op-amp performance for professional and consumer audio equipment manufacturers.

FAQ

What is the maximum operating supply voltage for RC4580IPW?

The RC4580IPW has an absolute maximum supply voltage rating of ±18V. However, the recommended operating range is ±2V to ±16V per the datasheet's Recommended Operating Conditions table. Exceeding ±18V risks permanent damage, and operation above ±16V may degrade long-term reliability or parametric performance. The RC4580IPW maintains full specification compliance within the ±2V to ±16V window across –40°C to 125°C ambient temperatures.

Is RC4580IPW pin-compatible with LM833?

Yes, RC4580IPW is pin and function compatible with LM833 in TSSOP-8 packaging, as confirmed in the official TI datasheet Feature section. Both devices share identical pin numbering (1OUT, 1IN–, 1IN+, VCC–, 2IN+, 2IN–, 2OUT, VCC+) and electrical interface behavior. However, RC4580IPW offers lower noise (0.8μV_rms vs 2.1μV_rms) and lower THD (0.0005% vs 0.002%), making it a performance upgrade in noise-sensitive applications.

Does RC4580IPW support single-supply operation?

Yes, RC4580IPW supports single-supply operation with appropriate biasing. Its input common-mode range extends to within 1.5V of the negative rail and its output can swing to within 1.5V of either rail under load. For single-supply use (e.g., +12V and GND), the inputs must be biased at mid-supply (e.g., 6V) using resistive dividers or dedicated reference ICs, and coupling capacitors are typically required on inputs/outputs to block DC offsets. The RC4580IPW datasheet confirms this capability in Section 6.4 Device Functional Mode.

What is the thermal resistance (RθJA) of RC4580IPW in TSSOP-8 package?

The junction-to-ambient thermal resistance (RθJA) for RC4580IPW in the TSSOP-8 (PW) package is 163°C/W, as specified in Table 5.4 Thermal Information of the TI datasheet. This value assumes standard JEDEC 2-layer board conditions (1-inch² copper pad). Actual thermal performance improves with additional copper area, internal ground/power planes, or thermal vias - critical for sustained high-output-current operation in headphone amplifier applications.

Can RC4580IPW drive 32Ω headphones directly?

Yes, RC4580IPW can directly drive 32Ω headphones. Its ±50mA output current rating and ±13.5V output swing into 2kΩ translate to ~±100mA peak capability into 32Ω loads under typical bias conditions. In practice, the RC4580IPW delivers >100mW cleanly into 32Ω with <0.0005% THD at 1kHz, as verified in TI's typical characteristics (Figure 5-3). For optimal performance, use DC-coupled output with appropriate level-shifting or AC-coupled output with ≥220μF electrolytic capacitors to avoid bass roll-off.