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Texas Instruments RC4558DGKR
- Part No.:
- RC4558DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
RC4558DGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,388
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Product details
Overview
RC4558DGKR 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 serves as a low-noise, low-distortion gain stage in AV receiver preamp circuits.
For engineers reviewing the RC4558DGKR datasheet, RC4558DGKR pinout, RC4558DGKR application, or RC4558DGKR equivalent, key selection criteria include its dual-channel matching, wide common-mode input range (±14V), absence of latch-up, internal frequency compensation, and suitability for voltage-follower and differential-output configurations in consumer audio systems.
Technical Context
The RC4558DGKR integrates two independent high-fidelity op-amps on a single die with matched AC performance-gain and phase response are aligned between channels to support stereo or dual-path signal chains. Its internal frequency compensation eliminates external compensation components while maintaining stability under capacitive loads up to 100pF.
It supports both dual-supply (±5V to ±15V) and single-supply operation with rail-referenced biasing. The device features high common-mode rejection (94dB typical) and power-supply rejection (102dB typical), enabling robust operation in noisy power environments typical of integrated audio subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4MHz - sets maximum usable closed-loop bandwidth at unity gain; supports audio band amplification with margin |
| Input voltage noise density | 6.5nV/√Hz at 10kHz - enables low-noise preamplification without audible hiss in line-level audio paths |
| THD+N | 0.0001% at 1kHz - ensures transparent signal reproduction with negligible harmonic artifacts |
| Output voltage swing | ±14.1V (RL = 10kΩ) - delivers full dynamic range into high-impedance loads without clipping |
| Common-mode input range | ±14V - allows direct interfacing with signals referenced near supply rails in follower topologies |
| Supply current (both amps) | 5.6mA typical - balances low power consumption with high AC performance for thermally constrained PCBs |
| Slew rate | 2.2V/μs - preserves transient fidelity for fast-rising audio transients without slew-induced distortion |
Pinout & Package
VSSOP-8 (DGK) package: 3mm × 4.9mm body, 0.65mm pitch, surface-mount, thermally enhanced with exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Amplifier 1 output | Low-impedance buffered output node; drives 2kΩ minimum load with <16.8% overshoot |
| 2 | Amplifier 1 inverting input | Inverts input signal; accepts feedback networks for stable gain configurations |
| 3 | Amplifier 1 noninverting input | High-impedance input (550MΩ || 5.6pF); used for unity-gain buffers or summing junctions |
| 4 | Negative supply (VCC–) | Reference return for dual-supply operation; must be decoupled with 0.1μF ceramic capacitor |
| 5 | Amplifier 2 noninverting input | Independent high-Z input; matches pin 3 in offset, noise, and CMRR performance |
| 6 | Amplifier 2 inverting input | Matches pin 2 in gain and phase response; enables matched dual-channel filtering |
| 7 | Amplifier 2 output | Electrically isolated from pin 1; crosstalk attenuation ≥120dB at 10kHz ensures channel separation |
| 8 | Positive supply (VCC+) | Power rail for both amplifiers; requires local 0.1μF bypass to ground for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| No external frequency compensation required | Internally compensated for unity-gain stability across temperature and supply variations |
| Matched amplifier pair | Gain and phase tracking between channels minimizes stereo imaging errors in dual-path designs |
| Wide common-mode input range | ±14V enables use in voltage-follower configurations without input clamping diodes |
| No latch-up behavior | Safe operation during overvoltage transients or input signal excursions beyond rails |
| Low distortion and noise | 0.0001% THD+N + 6.5nV/√Hz noise supports high-fidelity audio signal paths up to 20kHz |
Applications
| AV Receiver Preamp Stage | Professional Audio Mixer Channel |
|---|---|
Use Scenario: Amplifying and buffering line-level analog inputs before ADC conversion or tone control circuitry in multi-channel home theater receivers. IC Role / Device Role / Timing Role: Dual-channel voltage follower and gain stage; one amplifier handles left channel, the other right channel with matched DC and AC characteristics. Use Value: Maintains channel balance and phase coherence across 20Hz–20kHz, preventing stereo image collapse due to inter-channel mismatch. | Use Scenario: Implementing active summing nodes and post-fader output drivers in analog mixing consoles with discrete channel strips. IC Role / Device Role / Timing Role: Dual op-amp providing simultaneous signal inversion and level shifting for balanced output generation and bus summing. Use Value: Enables differential output creation (e.g., ±8V swing) from single-ended sources using only two amplifiers and passive resistors-no additional ICs required. |
| Soundbar Signal Path | Wireless Speaker DAC Output Buffer |
Use Scenario: Driving multi-driver arrays (tweeter/midrange/woofer) via passive crossovers in compact soundbars with space-constrained PCB layouts. IC Role / Device Role / Timing Role: Dual-channel output buffer delivering high-current drive capability (±125mA peak) into reactive speaker loads. Use Value: Sustains ±10V output swing into 2kΩ loads while preserving transient response (67ns rise time), ensuring crisp high-frequency articulation. | Use Scenario: Post-DAC analog filtering and volume-controlled output buffering in Bluetooth/Wi-Fi enabled smart speakers. IC Role / Device Role / Timing Role: Low-noise, low-distortion I/V conversion and line driver; one amplifier filters DAC output, the other drives headphone or speaker outputs. Use Value: 6.5nV/√Hz input noise prevents audible hiss when amplifying low-level DAC outputs, critical for high-SNR playback at low volumes. |
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 quiescent current (8mA) | Better suited for high-speed active filters and ultralow-noise microphone preamps | Select NE5532DR when >5MHz bandwidth or sub-5nV/√Hz noise is mandatory; RC4558DGKR offers better power efficiency for line-level stages |
| LM833N | Identical pinout and basic specs, but wider supply range (±4V to ±20V) and slightly higher THD+N (0.0002%) | Legacy through-hole alternative with identical functional behavior in existing SOIC-8 footprints | LM833N is a drop-in replacement in PDIP-8 sockets; RC4558DGKR provides superior thermal performance in VSSOP-8 for dense layouts |
Compared with NE5532DR and LM833N, RC4558DGKR delivers optimal trade-off between audio fidelity (0.0001% THD+N), power efficiency (5.6mA), and thermal footprint (VSSOP-8), making it preferred for space- and power-sensitive consumer audio PCBs where 4MHz bandwidth suffices.
Availability
RC4558DGKR is available at Aetrix Electronics and suitable for AV receivers, professional audio mixers, soundbars, and wireless speakers requiring stable component supply across production lifecycles.
Supply support for RC4558DGKR 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 heritage in precision op-amp design.
The RC4558DGKR belongs to TI's legacy general-purpose op-amp family, engineered specifically for cost-sensitive, high-volume audio signal conditioning where low distortion, matched dual-channel performance, and robustness in bipolar supplies are essential.
FAQ
What supply voltage range does the RC4558DGKR support?
The RC4558DGKR operates across ±5V to ±15V dual-supply rails, corresponding to a total supply range of 10V to 30V. Absolute maximum ratings limit VCC+ to +18V and VCC− to −18V; exceeding these values risks permanent damage. The device is not rated for single-supply operation below ±5V, and recommended conditions specify ±5V minimum for full specification compliance. RC4558DGKR maintains specified THD+N, noise, and output swing within this range.
Does the RC4558DGKR require external frequency compensation?
No, the RC4558DGKR features internal frequency compensation optimized for unity-gain stability across temperature and supply variations. This eliminates the need for external compensation capacitors in standard inverting, noninverting, or voltage-follower configurations. RC4558DGKR remains stable driving capacitive loads up to 100pF without oscillation, simplifying layout and reducing BOM count.
How does the RC4558DGKR perform in terms of channel matching?
The RC4558DGKR provides tightly matched gain and phase response between its two amplifiers, as confirmed in the datasheet's "Gain and phase match between amplifiers" feature. This matching ensures consistent frequency response and group delay across stereo or dual-path signal chains, minimizing imaging errors in audio applications. RC4558DGKR's matched performance is intrinsic to its monolithic dual-die construction-not achieved via external trimming.
What is the maximum output current capability of the RC4558DGKR?
The RC4558DGKR delivers ±125mA peak output current per amplifier, as specified in the Absolute Maximum Ratings table. This enables direct drive of moderate-impedance loads such as active crossover networks or low-impedance headphones without external buffers. RC4558DGKR sustains ±10V swing into 2kΩ loads while staying within safe operating area limits, verified across 0°C to 70°C ambient.
Is the RC4558DGKR suitable for single-supply operation?
Yes, the RC4558DGKR can operate from a single supply by referencing inputs and outputs to a mid-rail bias voltage (e.g., VCC/2). Its wide common-mode input range (±14V) and output swing (±14.1V) allow functional operation with appropriate biasing, though full specifications are guaranteed only under dual-supply conditions (±5V to ±15V). RC4558DGKR's lack of rail-to-rail input/output does not preclude single-supply use in line-level audio stages with proper DC bias design.
RC4558DGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-VSSOP
RC4558DGKR FAQ
1.How can I place an order for RC4558DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for RC4558DGKR 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 RC4558DGKR reliable?
The price and inventory of RC4558DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RC4558DGKR is usually 5 days.
3.What payment methods are accepted for RC4558DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RC4558DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RC4558DGKR?
RC4558DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RC4558DGKR 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 RC4558DGKR?
For technical support, including RC4558DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RC4558DGKR requirements.
6.How does Aetrix verify that RC4558DGKR is sourced from the original manufacturer or authorized distributors?
All RC4558DGKR 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 RC4558DGKR meets industry standards.
7.What is the process for return or replacement of RC4558DGKR?
All RC4558DGKR units undergo pre-shipment inspection (PSI). If there is an issue with RC4558DGKR, 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 RC4558DGKR part is unused and in its original packaging.
Return procedure for RC4558DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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