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Texas Instruments TAS5558DCAR
- Part No.:
- TAS5558DCAR
- Manufacturer:
- Texas Instruments
- Category:
- Audio Special Purpose
- Package:
- 56-PowerTFSOP (0.240", 6.10mm Width)
- Datasheet:
-
TAS5558DCAR.pdf
- Description:
- IC MODULATOR 56HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,532
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Product details
Overview
TAS5558DCAR from Texas Instruments is an 8-channel digital audio processor (DAP) with integrated asynchronous sample rate converter (ASRC), PWM output generator, and headphone driver. It supports dual 4-channel ASRC banks for simultaneous 32–192 kHz input streams, delivers >105 dB dynamic range, THD+N < 0.01% at 1 kHz, and drives eight differential PWM outputs plus stereo differential headphone outputs - optimized for Blu-ray HTiB and high-definition home theater systems.
For engineers reviewing the TAS5558DCAR datasheet, TAS5558DCAR pinout, TAS5558DCAR application, or TAS5558DCAR equivalent, key selection considerations include its dual-bank ASRC latency (102.53125/FSin + 36.46875/FSout), PSVC-enabled power-supply volume control (12/18/24 dB range), 384-kHz PWM switching rate for AD/BD/ternary modulation, and I²C-configurable 7-biquad/channel audio processing pipeline.
Technical Context
The TAS5558DCAR implements two independent 4-channel ASRC modules enabling concurrent processing of two distinct sampling-rate domains (e.g., 48 kHz main audio + 96 kHz effects stream). Its digital audio processing core includes per-channel volume control (–127 dB to +18 dB), ±18-dB bass/treble tone controls with selectable corner frequencies, configurable loudness compensation, and two dynamic range compressors with dual thresholds and slopes.
Internally, the device integrates a PLL locked to a 12.288 MHz crystal, generating clocks for 32–192 kHz operation; it supports both master and slave I²S modes, features programmable energy manager outputs (EMO1, ASEL_EMO2), and provides hard-mute and soft-mute (ramped) control via /MUTE and /BKND_ERR signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 8-channel PWM output + 2-channel differential headphone output |
| ASRC Architecture | Dual 4-channel banks supporting independent input sampling rates (32–192 kHz) |
| PWM Switching Rate | 384 kHz - enables AD/BD/ternary modulation for 48/96/192 kHz data with flat 20 Hz–40 kHz noise floor |
| Dynamic Range | >105 dB A-weighted (20 Hz–20 kHz, 48–96 kHz) |
| THD+N | <0.01% at 1 kHz, –1 dBFS output |
| Volume Control Range | –127 dB to +18 dB per channel with programmable slew rates |
| PSVC Range | Selectable 12/18/24 dB supply-based volume control with 2048-step PWM quantization |
Pinout & Package
Package: HTSSOP-56 (14.00 mm × 6.10 mm), thermally enhanced with exposed thermal pad. Pin-compatible with TAS5558 family; RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PWM_P_1 / PWM_M_1 | Differential PWM output channel 1 (+/–) | Drives external H-bridge stage in BTL or SE mode; supports AD/BD modulation |
| PWM_HPP_L / PWM_HPM_L | Differential headphone left (+/–) | High-performance analog headphone interface; requires external differential-input amplifier |
| SDIN1 / SDIN2 | Stereo serial audio inputs (Bank 1) | Accepts I²S/Left-justified data up to 64×fS; feeds first 4-channel ASRC bank |
| SDIN2-1 / SDIN2-2 | Stereo serial audio inputs (Bank 2) | Independent second input pair feeding second 4-channel ASRC bank |
| MCLK | Master clock input | 2–50 MHz reference; used for PLL lock and internal timing generation |
| SCL / SDA | I²C control interface | Fast-mode (400 kHz) bus for register configuration, volume, EQ, and PSVC setup |
| /PDN / /MUTE / /BKND_ERR | Hardware control signals | Asynchronous power-down, soft mute ramp, and back-end error recovery - all with defined timing specs |
| VALID | Output validity indicator | Active-high signal confirming stable, glitch-free PWM output state post-initialization or error recovery |
Key Features
| Feature | Design Value |
|---|---|
| Dual 4-channel ASRC | Enables simultaneous processing of two independent sampling-rate domains (e.g., 48 kHz TV audio + 96 kHz streaming content) |
| 7-biquad per channel | Supports complex equalization, crossover, and room correction without external DSP |
| Energy Manager (EMO) | Programmable interrupt outputs (EMO1, ASEL_EMO2) for subwoofer enable or system-level power coordination |
| Power-Supply Volume Control (PSVC) | 2048-step PWM output (PSVC/MCLKO pin) for Class-G amplifier supply modulation - improves SNR at low volumes |
| Flexible mute architecture | Soft mute with user-defined slew rate + hard mute via /BKND_ERR for fail-safe speaker protection |
Applications
| Home Theater Receiver | Blu-ray HTiB System |
|---|---|
Use Scenario: Integrated audio processing in compact home theater-in-a-box units with multi-source playback (HDMI ARC, optical, USB). IC Role / Device Role / Timing Role: Central DAP handling ASRC, volume, EQ, compression, and PWM drive for built-in amplifiers and headphone jack. Use Value: Eliminates need for external SRC and DAC; reduces BOM count by integrating 8-channel PWM generation and headphone driver. |
Use Scenario: DTS-HD Master Audio decoding and playback in Blu-ray player–integrated soundbars. IC Role / Device Role / Timing Role: Audio processor compliant with DTS-HD specification, providing 30 kHz bandwidth and low-latency dual-bank ASRC for seamless format switching. Use Value: Meets strict DTS-HD timing and fidelity requirements while enabling single-chip 8.2-channel audio output. |
| AV Receiver with Wireless Subwoofer | Multi-Zone Audio Distribution |
Use Scenario: Driving active subwoofer via I²S-out (SDOUT/SDIN5) while simultaneously powering front/rear channels via PWM. IC Role / Device Role / Timing Role: I²S master outputting processed LFE channel to wireless subwoofer module; synchronizes with main PWM outputs using shared MCLK. Use Value: Enables lossless, low-jitter subwoofer extension without adding latency or requiring separate SRC. |
Use Scenario: Distributing processed audio to multiple zones (e.g., living room, kitchen, patio) with independent volume and EQ. IC Role / Device Role / Timing Role: Configurable 8-channel mixer with per-zone volume control, PSVC, and programmable biquads for zone-specific acoustic tuning. Use Value: Supports up to four independent zones using channel grouping and I²C-controlled routing - no external mixing hardware required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital audio processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS5548DCAR | 4-channel version; identical ASRC, PWM, and processing architecture but half the channel count and reduced pin count (48-pin HTSSOP) | Limited to 4.1-channel systems; lacks second ASRC bank and headphone outputs | Select when system requires only four PWM channels and space/power constraints prohibit 8-channel solution |
| TAS5518PAPR | 64-pin HTQFP package; adds SPI interface, enhanced EMI reduction, and extended temperature grade (–40°C to 105°C) | Better suited for industrial audio or automotive infotainment where thermal robustness and alternate control interface are critical | Choose for designs requiring wider operating temperature range or SPI-based firmware updates alongside I²C |
Compared with TAS5558DCAR, TAS5548DCAR reduces channel count and package size for cost-sensitive 4-channel systems, while TAS5518PAPR trades HTSSOP thermal performance for HTQFP mechanical robustness and SPI flexibility - neither is pin-compatible, but both share identical register mapping and audio processing firmware compatibility.
Availability
TAS5558DCAR is available at Aetrix Electronics and suitable for home theater receivers, Blu-ray HTiB systems, AV distribution amplifiers, and multi-zone audio controllers requiring stable component supply, long-lifecycle support, and production-ready qualification.
Supply support for TAS5558DCAR 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 processing technologies, with decades of leadership in high-fidelity audio IC design.
The TAS5558DCAR belongs to TI's high-definition digital audio processor product line, engineered specifically for DTS-HD–compliant Blu-ray HTiB and premium home theater applications demanding low-latency ASRC, integrated PWM, and advanced system-level power management.
FAQ
What is the primary function of the TAS5558DCAR in an audio system?
The TAS5558DCAR serves as a complete 8-channel digital audio processor with integrated asynchronous sample rate conversion, audio enhancement (EQ, compression, loudness), and direct PWM output generation. It replaces discrete SRC, DSP, and DAC stages - enabling compact, high-fidelity audio subsystems in HTiB and AV receivers. The TAS5558DCAR processes up to ten digital audio inputs, applies per-channel processing, and drives eight PWM channels plus stereo headphone outputs without external converters.
Does the TAS5558DCAR support multiple input sampling rates simultaneously?
Yes, the TAS5558DCAR supports two independent 4-channel ASRC banks, allowing concurrent processing of two different input sampling rates (e.g., 44.1 kHz and 96 kHz) on SDIN1/SDIN2 and SDIN2-1/SDIN2-2. Each bank operates autonomously with its own latency profile (102.53125/FSin + 36.46875/FSout), enabling seamless multi-format playback in devices like universal Blu-ray players. The TAS5558DCAR does not require external clock domain isolation.
How does Power-Supply Volume Control (PSVC) work on the TAS5558DCAR?
The TAS5558DCAR implements PSVC via the PSVC/MCLKO pin, which outputs a 2048-step PWM signal synchronized to the audio frame rate. This signal modulates the supply voltage of external Class-G amplifiers, improving dynamic range at low volumes by reducing rail voltage while preserving headroom. PSVC range is configurable (12/18/24 dB), and the TAS5558DCAR maintains full audio fidelity during PSVC transitions without introducing artifacts or latency.
What are the key thermal considerations for the TAS5558DCAR in HTSSOP-56 packaging?
The TAS5558DCAR in HTSSOP-56 has a junction-to-ambient thermal resistance (RθJA) of 26.1°C/W and junction-to-board (RθJB) of 8.0°C/W. Successful thermal design requires a minimum 200 mm² copper pour under the exposed thermal pad, six or more thermal vias to inner ground planes, and decoupling capacitors placed within 3 mm of DVDD1/DVDD2 pins. The TAS5558DCAR operates up to 105°C junction temperature, but sustained ambient above 70°C requires forced airflow or heatsinking per TI's SLES273B layout guidelines.
Can the TAS5558DCAR drive both speakers and headphones simultaneously?
Yes - the TAS5558DCAR supports concurrent speaker and headphone operation via the /HP_SEL pin. When /HP_SEL is logic low, the PWM_HPM_L/R and PWM_HPP_L/R outputs are enabled while main PWM channels (1–8) are muted; when /HP_SEL is high, main PWM outputs activate and headphone outputs mute. The TAS5558DCAR ensures zero-crossing muting and independent volume control for both paths, enabling true dual-output mode without external switching circuitry.
TAS5558DCAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 56-PowerTFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Modulator
- Applications:
- Digital Audio Interfacing
- Number of Channels:
- 8
- Interface:
- I2C, I2S
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 85°C (TA)
- Specifications:
- 32kHz ~ 192kHz
- Mounting Type:
- Surface Mount
- Grade:
- -
TAS5558DCAR FAQ
1.How can I place an order for TAS5558DCAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TAS5558DCAR 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 TAS5558DCAR reliable?
The price and inventory of TAS5558DCAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TAS5558DCAR is usually 5 days.
3.What payment methods are accepted for TAS5558DCAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TAS5558DCAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TAS5558DCAR?
TAS5558DCAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TAS5558DCAR 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 TAS5558DCAR?
For technical support, including TAS5558DCAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TAS5558DCAR requirements.
6.How does Aetrix verify that TAS5558DCAR is sourced from the original manufacturer or authorized distributors?
All TAS5558DCAR 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 TAS5558DCAR meets industry standards.
7.What is the process for return or replacement of TAS5558DCAR?
All TAS5558DCAR units undergo pre-shipment inspection (PSI). If there is an issue with TAS5558DCAR, 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 TAS5558DCAR part is unused and in its original packaging.
Return procedure for TAS5558DCAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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