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Texas Instruments TAS3308PZTR
- Part No.:
- TAS3308PZTR
- Manufacturer:
- Texas Instruments
- Category:
- Audio Special Purpose
- Package:
- 100-TQFP
- Datasheet:
-
TAS3308PZTR.pdf
- Description:
- IC AUDIO SIGNAL PROCESSR 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,797
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Product details
Overview
TAS3308PZTR from Texas Instruments is a fully programmable 48-bit digital audio processor SOC with integrated 10:1 stereo analog input MUX, stereo ADC (100 dB DNR), six differential PWM outputs (105 dB DNR), and embedded 8051 WARP microcontroller. It operates at 135 MHz with 76-bit accumulator precision and supports I²S, left-justified, right-justified, and S/PDIF formats for audio I/O in flat-panel TV and speaker bar systems.
For engineers reviewing the TAS3308PZTR datasheet, TAS3308PZTR pinout, TAS3308PZTR application, or TAS3308PZTR equivalent, this device requires attention to its dual-supply architecture (DVDD/AVDD/DVDD_PWM), 100-pin TQFP package layout, PurePath Studio™ configuration workflow, and PWM clocking synchronization across three independent output banks.
Technical Context
The TAS3308PZTR integrates a hardware-accelerated 48-bit DSP core with five simultaneous arithmetic operations per clock cycle, a single-cycle 28 × 48 multiplier, and 360 ms of 24-bit delay memory at 48 kHz. Its signal path includes decimation filters for ADC inputs and interpolation + fourth-order chaotic noise shaping for PWM outputs.
System control is handled by an embedded 8051 WARP microprocessor with 1k data RAM (48-bit), 1k coefficient RAM (28-bit), and 2.8k program RAM - all accessible via dual I²C ports (master/slave) and GPIO-controlled boot modes. Clock management uses a digital PLL with auto sample-rate detection (32/44.1/48 kHz) and integrated analog PLL for crystal oscillator stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Processing Core | 135-MHz, 48-bit DSP with 76-bit accumulator - ensures high-precision audio arithmetic without overflow in multi-stage EQ/crossover processing. |
| Analog Input | Stereo 100-dB DNR ADC with 10:1 analog MUX - enables flexible source selection (e.g., HDMI audio return, Bluetooth baseband, tuner) before digitization. |
| PWM Outputs | Six differential channels, 105-dB DNR, PurePath Digital PWM - directly drives TI Class-D amplifiers without external filtering or level-shifting. |
| Digital Audio I/O | Three synchronous serial inputs (six channels), two outputs (four channels), S/PDIF transmitter - supports multi-zone audio routing and digital passthrough. |
| Supply Architecture | Separate DVDD (3.0–3.6 V), AVDD (3.0–3.6 V), DVDD_PWM (3.0–3.6 V) rails - isolates digital logic, analog front-end, and PWM switching noise domains. |
| Control Interface | Dual I²C ports (I2C_SDA1/I2C_SCL1 and I2C_SDA2/I2C_SCL2) - allows concurrent host MCU communication and firmware update without interrupting audio path. |
| Operating Temp | 0°C to 70°C ambient - validated for consumer audio equipment enclosures with passive thermal management. |
Pinout & Package
Package: 100-pin TQFP (PZT), 14 mm × 14 mm, 0.5 mm pitch, Moisture Sensitivity Level 3 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDIN1–SDIN3 | Synchronous serial audio input data | Accepts up to six channels of I²S/left-justified/right-justified data - mapped to internal decimation filters before DSP processing. |
| SDOUT1/SDOUT2 | Synchronous serial audio output data | Delivers four-channel processed audio to external DACs or digital receivers; SDOUT2 doubles as SPDIF_OUT. |
| PWM1L(I+D)–PWM3R(I+D) | Differential PWM output terminals | Each pair (e.g., PWM1LI/PWM1LO) drives one channel of Class-D amplifier; "I+D" denotes interpolated + noise-shaped output. |
| LINEIN1L–LINEIN10R | Analog input terminals | 10 stereo analog inputs routed through internal 10:1 MUX to stereo ADC - supports mixed-source audio aggregation (e.g., TV tuner + game console + streaming stick). |
| I2C_SDA1/I2C_SCL1 | Primary I²C bidirectional data/clock | Configures DSP coefficients, GPIO states, and system registers during initialization and runtime parameter updates. |
| RESET/MUTE | Asynchronous reset and audio muting | Hardware RESET forces full state reload; MUTE asserts zero-output on all PWM channels without disrupting DSP execution flow. |
Key Features
| Feature | Design Value |
|---|---|
| Graphical programming via PurePath Studio™ | Drag-and-drop DSP block diagramming eliminates hand-coded assembly - reduces firmware development time by >60% for equalization and crossover tuning. |
| Integrated 8051 WARP microcontroller | Executes custom boot sequences, real-time volume control, and GPIO-based source switching - removes need for external MCU in cost-sensitive designs. |
| Auto sample-rate detection | Identifies 32/44.1/48 kHz LRCLK automatically - enables plug-and-play compatibility with diverse digital sources without manual configuration. |
| PurePath Digital PWM technology | Eliminates pop/click artifacts during power-up/down and mute transitions - meets IEC 60268-5 loudspeaker safety requirements. |
| 105-dB DNR PWM outputs | Supports >110 dB dynamic range end-to-end when paired with TI's TPA3116D2 - suitable for premium soundbars and home theater subwoofers. |
Applications
| Flat-Screen Televisions | Speaker Bars |
|---|---|
|
Use Scenario: Integrated audio processing for HDMI ARC, tuner, and Bluetooth audio streams in 4K UHD TVs. IC Role / Device Role / Timing Role: Central audio SOC handling analog/digital input aggregation, speaker EQ, bass management, and PWM drive for built-in speakers. Use Value: Enables single-chip audio subsystem with <100 µs latency between HDMI input and PWM output - critical for lip-sync compliance. |
Use Scenario: Multi-channel spatial audio rendering in compact 2.1/5.1 soundbars with passive radiators. IC Role / Device Role / Timing Role: Real-time 3-band parametric EQ, delay compensation for driver alignment, and 6-channel PWM generation with synchronized clocks. Use Value: Delivers 105 dB SNR across full 20 Hz–20 kHz bandwidth using integrated noise shapers - eliminates need for external sigma-delta modulators. |
| MP3 Player/Music Phone Docks | Automotive Head Units |
|
Use Scenario: High-fidelity line-out and headphone amplification for portable media devices docked into powered cradles. IC Role / Device Role / Timing Role: Analog pass-through channel with digital volume control, soft-mute ramping, and DC-blocking via internal DSP filters. Use Value: Maintains 100 dB DNR from analog input to PWM output - preserves master recording fidelity without analog gain stages. |
Use Scenario: Audio hub in infotainment systems accepting CAN bus metadata, USB audio, and FM/AM tuner signals. IC Role / Device Role / Timing Role: Source selector, loudness compensation, and speaker protection (clipping detection + thermal foldback) executed in real time. Use Value: Uses GPIO1/GPIO2 for vehicle-specific mute triggers and status reporting - satisfies OEM functional safety interface requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital audio processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS3251RTAT | Single-core 96-kHz-capable DSP, no analog ADC/MUX, only two PWM outputs, smaller 64-pin QFN package | Targeted at space-constrained mono/stereo amplifiers - lacks multi-input aggregation and 105-dB PWM performance | Select when system uses external ADC and requires lower BOM count; not drop-in due to pin count and feature set mismatch |
| TAS5805MRTWR | Integrated Class-D amplifier + DSP, 48-bit processing, but no analog input section or 10:1 MUX | Designed for direct speaker drive with minimal external components - omits analog front-end entirely | Choose for all-in-one amplifier modules; requires redesign of analog input path and loses TAS3308PZTR's flexibility in source mixing |
Compared with TAS3308PZTR, TAS3251RTAT offers higher sample-rate support but sacrifices analog integration and output channel count, while TAS5805MRTWR embeds power stages at the expense of analog input versatility - making TAS3308PZTR uniquely suited for hybrid analog/digital audio hubs requiring both signal aggregation and high-fidelity PWM drive.
Availability
TAS3308PZTR is available at Aetrix Electronics and suitable for flat-screen televisions, speaker bars, and automotive head units requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for TAS3308PZTR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets since 1930.
The TAS3308PZTR belongs to TI's PurePath™ audio processor product line, engineered specifically for high-fidelity, low-latency audio subsystems in space-constrained consumer electronics where analog integration, programmability, and PWM output quality are critical.
FAQ
What is the primary function of the TAS3308PZTR in an audio system?
The TAS3308PZTR serves as a complete audio system-on-chip, integrating a 48-bit DSP core, stereo ADC, 10:1 analog input MUX, six PWM outputs, and an 8051 microcontroller. It performs real-time audio processing including equalization, crossover, dynamic range compression, and source mixing - enabling single-chip audio subsystems in TVs and soundbars without external processors or converters.
Does the TAS3308PZTR require external memory to operate?
No, the TAS3308PZTR contains 1k words of 48-bit data RAM, 1k words of 28-bit coefficient RAM, and 2.8k words of program RAM - sufficient for storing DSP algorithms, filter coefficients, and boot code. External memory is optional and only needed for extended delay buffers or large algorithm libraries beyond the on-chip 360 ms at 48 kHz.
How does the TAS3308PZTR handle different audio sample rates?
The TAS3308PZTR features auto sample-rate detection on its LRCLKIN pin, identifying 32 kHz, 44.1 kHz, and 48 kHz automatically. Its digital PLL locks to incoming clock signals and adjusts internal decimation/interpolation rates accordingly - eliminating manual register configuration and ensuring seamless operation across mixed-source systems like HDMI + Bluetooth + tuner inputs.
Can the TAS3308PZTR drive Class-D amplifiers directly?
Yes, the TAS3308PZTR's six differential PWM outputs are designed to interface directly with TI's PurePath™-compatible Class-D amplifiers (e.g., TPA3116D2). Its PurePath Digital PWM technology includes fourth-order chaotic noise shaping and non-linear correction, delivering 105 dB DNR without external filtering or gate drivers - reducing BOM cost and PCB area.
What development tools are required to program the TAS3308PZTR?
TI's PurePath Studio™ graphical software environment is required to configure the TAS3308PZTR. It provides drag-and-drop DSP block libraries, real-time coefficient tuning, and automatic C-code generation for the embedded 8051 core. No standalone compiler or JTAG debugger is needed - configuration is loaded via I²C or SPI during startup.
TAS3308PZTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 100-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Audio Signal Processor
- Applications:
- Consumer Audio, Musical Instruments
- Number of Channels:
- 2
- Interface:
- I2C
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Specifications:
- -
- Mounting Type:
- Surface Mount
- Grade:
- -
TAS3308PZTR FAQ
1.How can I place an order for TAS3308PZTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TAS3308PZTR 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 TAS3308PZTR reliable?
The price and inventory of TAS3308PZTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TAS3308PZTR is usually 5 days.
3.What payment methods are accepted for TAS3308PZTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TAS3308PZTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TAS3308PZTR?
TAS3308PZTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TAS3308PZTR 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 TAS3308PZTR?
For technical support, including TAS3308PZTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TAS3308PZTR requirements.
6.How does Aetrix verify that TAS3308PZTR is sourced from the original manufacturer or authorized distributors?
All TAS3308PZTR 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 TAS3308PZTR meets industry standards.
7.What is the process for return or replacement of TAS3308PZTR?
All TAS3308PZTR units undergo pre-shipment inspection (PSI). If there is an issue with TAS3308PZTR, 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 TAS3308PZTR part is unused and in its original packaging.
Return procedure for TAS3308PZTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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