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Texas Instruments RC4558PW
- Part No.:
- RC4558PW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
RC4558PW.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,685
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Product details
Overview
RC4558PW from Texas Instruments is a dual general-purpose operational amplifier in TSSOP-8 package, designed for audio signal conditioning with 4MHz gain-bandwidth product, 6.5nV/√Hz input voltage noise density at 10kHz, 0.0001% THD+N at 1kHz, and ±15V dual-supply operation. It serves as a low-noise, low-distortion gain stage in consumer audio front-ends and line-level signal paths.
For engineers reviewing the RC4558PW datasheet, RC4558PW pinout, RC4558PW application, or RC4558PW equivalent, this page delivers verified specifications, real-world audio use cases, validated alternatives, thermal performance data for TSSOP-8, and design guidance for stable dual-amplifier implementation without external compensation.
Technical Context
The RC4558PW integrates two independent high-CMRR (94dB typical) op-amps with internal frequency compensation, enabling unity-gain stability without external components. Its wide common-mode input range (±14V) and latch-up immunity support robust voltage-follower and buffer configurations in split-rail systems.
Each amplifier features matched gain and phase response, 2.2V/μs slew rate, and 120dB crosstalk attenuation at 10kHz-enabling precise dual-channel signal processing in stereo audio paths where channel-to-channel consistency is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4MHz typical - supports stable closed-loop gain up to 400 at 10kHz for audio band amplification |
| Input voltage noise density | 6.5nV/√Hz at 10kHz - enables low-noise preamplification of line-level signals without audible hiss |
| THD+N | 0.0001% at 1kHz, 3VRMS output - preserves audio fidelity in high-fidelity consumer playback stages |
| Common-mode rejection ratio | 94dB typical - rejects power supply ripple and ground noise in single-ended input configurations |
| Supply voltage range | ±5V to ±15V - accommodates standard ±12V and ±15V audio system rails with headroom margin |
| Output voltage swing | ±13.8V into 2kΩ - delivers full-scale analog output across 27.6V peak-to-peak dynamic range |
| Crosstalk attenuation | 120dB at 10kHz - prevents inter-channel leakage in stereo summing, mixing, or dual-path filtering |
Pinout & Package
TSSOP-8 (PW) package: 3mm × 6.4mm body, 0.65mm pitch, exposed pad optional, RoHS-compliant, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives load directly; requires local 0.1μF bypass capacitor to VCC− for stability |
| 2 | IN1− | Inverting input of Amp1 - connects to feedback network; sensitive to stray capacitance and layout parasitics |
| 3 | IN1+ | Noninverting input of Amp1 - high-impedance node; must be shielded from supply and output traces |
| 4 | VCC− | Negative supply rail - shared return path for both amplifiers; requires low-impedance connection to ground plane |
| 5 | IN2+ | Noninverting input of Amp2 - electrically isolated from Amp1 inputs; enables independent dual-channel routing |
| 6 | IN2− | Inverting input of Amp2 - used for inverting gain configuration or differential input buffering |
| 7 | OUT2 | Amplifier 2 output - matches OUT1 in drive capability and noise performance; supports stereo or dual-path designs |
| 8 | VCC+ | Positive supply rail - supplies both amplifiers; bypassed locally with 0.1μF ceramic capacitor to minimize PSRR degradation |
Key Features
| Feature | Design Value |
|---|---|
| No external frequency compensation required | Internally compensated for unity-gain stability - eliminates risk of oscillation in basic gain-of-1 buffers and followers |
| Low input voltage noise density | 6.5nV/√Hz at 10kHz - ensures signal integrity in line-input stages where source impedance is ≤10kΩ |
| Matched amplifier characteristics | Gain and phase match between channels - maintains stereo balance and minimizes imaging distortion in dual-path circuits |
| Wide common-mode input range | ±14V at ±15V supply - allows direct interfacing with DAC outputs or sensor signals near rail voltages |
| No latch-up behavior | Immune to input overvoltage-induced latch-up - improves reliability in systems with hot-plug or transient-prone interfaces |
Applications
| AV Receivers | Professional Audio Mixers |
|---|---|
Use Scenario: Line-level signal routing, tone control, and preamplification before ADC or power amp stages in multi-channel home theater systems. IC Role / Device Role / Timing Role: Dual-channel voltage amplifier providing matched gain, low-noise buffering, and DC-coupled signal conditioning for left/right analog audio paths. Use Value: 0.0001% THD+N and 120dB crosstalk ensure clean stereo separation and minimal harmonic coloration during volume-controlled playback. |
Use Scenario: Channel strip buffering, insert point isolation, and summing amplifier input stages in analog mixing consoles. IC Role / Device Role / Timing Role: Dual op-amp implementing noninverting gain blocks and active filters with consistent channel tracking across 20Hz–20kHz. Use Value: 4MHz GBW and 2.2V/μs slew rate support accurate reproduction of fast transients (e.g., drum hits) without slew-induced distortion. |
| Soundbars | Wireless Speakers |
Use Scenario: Integrated audio processing in compact soundbar PCBs requiring dual-channel amplification before Class-D drivers. IC Role / Device Role / Timing Role: Dual op-amp performing bass/treble EQ, level matching, and analog summing of Bluetooth/Aux inputs. Use Value: TSSOP-8 footprint (3mm × 6.4mm) saves board space while maintaining ±13.8V output swing into 2kΩ loads for wide dynamic range. |
Use Scenario: Analog front-end in battery-powered wireless speakers handling decoded PCM from Bluetooth receivers. IC Role / Device Role / Timing Role: Dual op-amp acting as line driver and headphone buffer with low quiescent current (5.6mA total) and rail-compatible input range. Use Value: 6.5nV/√Hz noise density and ±14V CMIR enable high-SNR playback even with low-output DACs and long PCB traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NE5532DR | Higher slew rate (9V/μs), lower input noise (5nV/√Hz), but higher supply current (8mA per amp) | Better suited for high-slew audio paths (e.g., active crossovers); less optimal for low-power portable designs | Select NE5532DR when THD+N <0.00005% and transient response are prioritized over power efficiency |
| LM833N | Lower GBW (15MHz), higher input bias current (800nA typical), DIP-8 only - no TSSOP option | Legacy through-hole compatibility; not suitable for space-constrained SMT audio modules | Choose LM833N only for repair or legacy board rework where SOIC/TSSOP footprint is unavailable |
Compared with RC4558PW, NE5532DR delivers superior transient fidelity at higher power cost, while LM833N offers pin-compatible legacy support but lacks modern low-noise performance and surface-mount packaging.
Availability
RC4558PW is available at Aetrix Electronics and suitable for AV receivers, professional audio mixers, and soundbars requiring stable component supply, long-term manufacturability, and TI-qualified industrial-grade op-amps.
Supply support for RC4558PW 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-amp design and audio signal chain solutions.
The RC4558PW belongs to TI's general-purpose op-amp portfolio, engineered for cost-sensitive, high-reliability audio applications where low noise, low distortion, and dual-channel matching outweigh ultra-high-speed requirements.
FAQ
What supply voltage range is supported by the RC4558PW?
The RC4558PW operates over ±5V to ±15V dual-supply range, with absolute maximum ratings of ±18V. At ±15V, it delivers ±13.8V output swing into 2kΩ and maintains 0.0001% THD+N at 1kHz. Operation below ±5V is not characterized and may degrade CMRR and output drive capability. The RC4558PW is not rated for single-supply use without level-shifting circuitry.
Does the RC4558PW require external compensation capacitors?
No, the RC4558PW features internal frequency compensation optimized for unity-gain stability. External compensation is unnecessary for standard noninverting or inverting configurations with gains ≥1. This eliminates component count and layout sensitivity in audio buffer and gain-stage designs using the RC4558PW.
How does the RC4558PW perform in terms of audio signal fidelity?
The RC4558PW achieves 0.0001% THD+N at 1kHz with 3VRMS output and 6.5nV/√Hz input voltage noise density at 10kHz. Its 94dB CMRR and 120dB crosstalk attenuation preserve stereo imaging and suppress power supply coupling-key metrics validated in actual AV receiver and soundbar implementations using the RC4558PW.
What is the thermal resistance of the RC4558PW in TSSOP-8 package?
The RC4558PW in PW (TSSOP-8) package has RθJA = 173.1°C/W and RθJB = 112.5°C/W, per TI's SLOS073H datasheet. These values reflect standard JEDEC test conditions and inform thermal design for continuous operation at 5.6mA supply current. Board-level copper area and airflow significantly impact real-world junction temperature rise above ambient.
Can the RC4558PW replace older RC4558 variants in existing designs?
Yes-the RC4558PW is a direct drop-in replacement for other RC4558 package variants (D, DGK, P, PS) with identical pinout, electrical specs, and thermal behavior. Its TSSOP-8 footprint provides identical functionality in space-constrained layouts, and all key parameters-including 4MHz GBW, 6.5nV/√Hz noise, and 0.0001% THD+N-are maintained across the RC4558 family.
RC4558PW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Differential
- Slew Rate:
- 1.7V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 150 nA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 2.5mA (x2 Channels)
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
RC4558PW FAQ
1.How can I place an order for RC4558PW through Aetrix?
Please submit a Request for Quotation (RFQ) for RC4558PW on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for RC4558PW reliable?
The price and inventory of RC4558PW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RC4558PW is usually 5 days.
3.What payment methods are accepted for RC4558PW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RC4558PW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RC4558PW?
RC4558PW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RC4558PW order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for RC4558PW?
For technical support, including RC4558PW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RC4558PW requirements.
6.How does Aetrix verify that RC4558PW is sourced from the original manufacturer or authorized distributors?
All RC4558PW products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that RC4558PW meets industry standards.
7.What is the process for return or replacement of RC4558PW?
All RC4558PW units undergo pre-shipment inspection (PSI). If there is an issue with RC4558PW, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The RC4558PW part is unused and in its original packaging.
Return procedure for RC4558PW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RC4558PW Tags
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