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Texas Instruments TAS3308PZT
- Part No.:
- TAS3308PZT
- Manufacturer:
- Texas Instruments
- Category:
- Audio Special Purpose
- Package:
- 100-TQFP
- Datasheet:
-
TAS3308PZT.pdf
- Description:
- IC AUDIO SIGNAL PROCESSR 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,342
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Product details
Overview
TAS3308PZT from Texas Instruments is a fully programmable 48-bit digital audio processor SOC with integrated stereo analog input MUX (10:1), 100-dB DNR stereo ADC, six 105-dB DNR differential PWM outputs, dual I²C interfaces, and embedded 8051 WARP microcontroller - designed for high-fidelity audio processing in flat-screen TVs, speaker bars, and automotive head units.
For engineers reviewing the TAS3308PZT datasheet, TAS3308PZT pinout, TAS3308PZT application, or TAS3308PZT equivalent, key selection criteria include its 135-MHz DSP core, 76-bit accumulator precision, PurePath™ digital PWM technology, auto sample-rate detection (32/44.1/48 kHz), and TQFP-100 package compatibility with TI Class-D amplifier interfaces.
Technical Context
The TAS3308PZT integrates a hardware-accelerated 48-bit audio DSP engine capable of five simultaneous operations per clock cycle, including speaker equalization, crossover, delay compensation, dynamic range compression, and psychoacoustic bass boost using TI-licensed or third-party algorithms. It supports three synchronous serial audio inputs (six channels) and two synchronous serial outputs (four channels), plus S/PDIF transmit functionality.
Its system architecture includes an embedded 8051 WARP microcontroller with 2.8k program RAM, 1k data RAM (48-bit), and 1k coefficient RAM (28-bit), alongside dedicated clock management with digital PLL, analog PLL, and crystal oscillator (24.576 MHz). The device operates from a single 3.3-V supply with integrated regulators and supports master/slave mode Fs at 48 kHz or auto-detecting 32/44.1/48 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DSP Core Speed | 135 MHz - enables real-time execution of complex multi-band EQ, crossover, and DRC without external co-processing. |
| Data Path Width | 48-bit with 76-bit accumulator - preserves numerical precision across cascaded filter stages and prevents quantization noise buildup. |
| ADC Performance | 100 dB DNR typical - ensures high-resolution analog input capture for low-noise pre-processing before digital manipulation. |
| PWM Output Channels | Six differential outputs (105 dB DNR) - directly drives TI Class-D amplifiers with minimal external filtering via PurePath™ digital PWM. |
| Audio Interfaces | Three SDIN ports (6 ch), two SDOUT ports (4 ch), S/PDIF TX, LRCLK/SCLK/MCLK I/O - supports multi-source routing and flexible topology design. |
| Control Interface | Dual I²C ports (master/slave) - enables concurrent configuration of audio processing and system-level device control without bus contention. |
| Supply Voltage | Single 3.3 V ±10% - simplifies power design with internal DVDD/AVDD/DVDD_PWM regulators and bypass-cap accessible pins. |
Pinout & Package
TAS3308PZT is housed in a 100-pin TQFP (PZT) package with 0.5-mm pitch, 14 × 14 mm body, and exposed thermal pad (JEDEC MS-026 compliant). Pin 1 orientation follows Q2 quadrant assignment in tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDIN1–SDIN3 | Synchronous serial audio input | Accepts up to six channels of I²S/Left-Justified/Right-Justified data at sample rates up to 48 kHz. |
| SDOUT1/SDOUT2 | Synchronous serial audio output | Delivers four-channel processed audio to external DACs or digital amplifiers with frame-sync alignment. |
| SPDIF_IN / SPDIF_OUT | S/PDIF interface | Enables digital audio passthrough or source integration without analog conversion loss. |
| PWM1L/R–PWM3L/R | Differential PWM output pairs | Drive Class-D amplifier inputs with TI's PurePath™ noise-shaping; each pair supports independent channel mapping. |
| I2C_SDA1/I2C_SCL1 I2C_SDA2/I2C_SCL2 |
Two independent I²C buses | Allow simultaneous firmware loading (via one bus) and real-time parameter updates (via second bus) without interrupting audio flow. |
| MCLKIN / MCLKOUT | Main clock input/output | Supports master-mode clock generation or slave-mode synchronization to external system clock domain. |
| RESET / MUTE | System control signals | Hardware reset initializes all registers; MUTE pin provides glitch-free audio muting without software intervention. |
Key Features
| Feature | Design Value |
|---|---|
| Graphical programming via PurePath Studio™ | Drag-and-drop DSP flow design eliminates low-level coding; generates optimized assembly for 135-MHz core. |
| 10:1 stereo analog input MUX | Reduces external analog switching components; supports line-in, dock, tuner, and auxiliary sources in compact AV systems. |
| Fourth-order chaotic noise shaper | Minimizes PWM quantization artifacts and eliminates audible pop/click during power-up and mute transitions. |
| 360-ms delay memory (at 48 kHz) | Enables precise time-alignment across multi-driver speaker systems, including subwoofer phase correction and acoustic beamforming. |
| Auto sample-rate detection | Eliminates manual configuration; locks to 32/44.1/48 kHz input streams without host CPU involvement. |
Applications
| Flat-Screen Television Audio Hub | Automotive Head Unit Signal Processor |
|---|---|
|
Use Scenario: Central audio routing and enhancement for HDMI/USB/Bluetooth sources feeding multiple speaker zones and subwoofers. IC Role / Device Role / Timing Role: Digital audio processor with integrated ADC, PWM outputs, and 8051 controller handles source switching, bass management, and speaker-specific EQ in real time. Use Value: Replaces discrete ADC + DSP + microcontroller + PWM driver stack; reduces BOM count by ≥7 components while improving SNR consistency. |
Use Scenario: Multi-source audio preprocessing in infotainment systems with AM/FM, media player, and hands-free telephony inputs. IC Role / Device Role / Timing Role: Audio SOC performs adaptive noise suppression, dynamic range compression for cabin acoustics, and time-aligned output to front/rear/sub channels. Use Value: Enables consistent loudness across varying road noise levels and supports TI Class-D amplifier interoperability without external level-shifting. |
| Smart Speaker Bar Audio Engine | MP3 Docking Station Audio Processor |
|
Use Scenario: Compact soundbar requiring virtual surround, dialogue enhancement, and room-adaptive EQ from stereo or Dolby Digital sources. IC Role / Device Role / Timing Role: DSP core executes TI-licensed virtualization algorithms; PWM outputs drive integrated Class-D amps with fourth-order noise shaping. Use Value: Delivers >105 dB DNR output with <100 µs latency between input and PWM edge, enabling real-time lip-sync-critical playback. |
Use Scenario: High-fidelity docking station for smartphones/tablets, supporting analog line-in, USB audio, and Bluetooth A2DP streaming. IC Role / Device Role / Timing Role: Analog MUX selects between docked device and auxiliary inputs; ADC digitizes analog signals; DSP applies tone control and headphone-specific processing. Use Value: Eliminates need for external op-amps and passive filters; maintains 100 dB DNR from analog input through digital processing to PWM output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital audio processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS3251DAP | Lower 96-MHz DSP clock; 32-bit data path; no integrated ADC; only four PWM outputs. | Targeted at cost-sensitive, lower-channel-count systems without analog input requirements. | Select when analog input MUX and stereo ADC are unnecessary and system-level ADC is already present. |
| TAS5825MRTWR | Integrated Class-D amplifier (2×25W); no analog input MUX or ADC; 48-bit DSP but no 8051 MCU. | Designed for direct-drive speaker applications where amplification and processing are co-located. | Choose when board space is constrained and amplifier integration outweighs flexibility of separate analog/digital signal paths. |
Compared with TAS3308PZT, TAS3251DAP lacks analog input capability and offers reduced processing headroom, while TAS5825MRTWR trades programmable analog interface for monolithic amplifier integration - making TAS3308PZT uniquely suited for modular, high-fidelity audio subsystems requiring full analog-to-PWM signal chain control.
Availability
TAS3308PZT is available at Aetrix Electronics and suitable for flat-screen television audio hubs, automotive head units, and smart speaker bar designs requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for TAS3308PZT 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, specializing in analog, embedded processing, and digital signal processing technologies for industrial, automotive, and consumer markets.
The TAS3308 belongs to TI's PurePath™ digital audio processor product line, engineered to deliver high-precision, low-latency audio signal processing with integrated analog front-end and PWM output drivers for compact, high-performance audio systems.
FAQ
What is the primary function of the TAS3308PZT in an audio system?
The TAS3308PZT serves as a complete digital audio system-on-chip, integrating a 135-MHz 48-bit DSP core, stereo 100-dB DNR ADC, 10:1 analog input MUX, six 105-dB DNR PWM outputs, and an embedded 8051 microcontroller. It processes audio signals end-to-end - from analog input selection and digitization through real-time EQ, crossover, delay, and DRC - then delivers high-fidelity PWM output directly to Class-D amplifiers. This eliminates the need for discrete signal chain components in applications like TVs and speaker bars.
Does the TAS3308PZT support automatic sample rate detection?
Yes, the TAS3308PZT supports automatic sample rate detection for 32 kHz, 44.1 kHz, and 48 kHz input streams in slave mode. This feature operates independently of host software, allowing seamless integration with variable-rate audio sources such as broadcast tuners or streaming devices without requiring manual configuration or clock reprogramming. The TAS3308PZT uses this detection to configure internal decimation/interpolation paths and synchronize its DSP timing automatically.
Can the TAS3308PZT be programmed without writing assembly code?
Yes, the TAS3308PZT is fully programmable using Texas Instruments' PurePath Studio™ graphical development environment. Engineers drag-and-drop functional blocks (e.g., biquad filters, mixers, delays) onto a visual canvas, configure parameters, and generate optimized, cycle-accurate assembly code for the 135-MHz DSP core. No manual assembly coding is required. The TAS3308PZT also supports C-based firmware development for its embedded 8051 WARP microcontroller using standard 8051 toolchains.
What type of PWM technology does the TAS3308PZT use, and why does it matter?
The TAS3308PZT employs TI's PurePath™ digital PWM technology, featuring a fourth-order chaotic noise shaper with non-linear correction. This architecture minimizes out-of-band quantization noise and eliminates audible pop/click artifacts during power transitions and mute/unmute events. Unlike conventional delta-sigma modulators, PurePath™ ensures clean, low-distortion PWM waveforms that interface seamlessly with TI's Class-D amplifier portfolio - a key advantage reflected in the TAS3308PZT's 105-dB DNR specification for PWM outputs.
Is the TAS3308PZT pin-compatible with other TI audio processors like the TAS3251?
No, the TAS3308PZT is not pin-compatible with the TAS3251 or other TI audio processors. It uses a unique 100-pin TQFP (PZT) footprint with dedicated signal assignments for its six PWM output pairs, triple SDIN ports, dual I²C interfaces, and analog input MUX control lines. While both devices belong to TI's digital audio processor family, their pinouts, power domains (e.g., DVDD_PWM1/2/3), and peripheral mappings differ significantly - requiring distinct PCB layouts. The TAS3308PZT's pinout is documented in the SLES215C datasheet Figure 1 (top-view package diagram).
TAS3308PZT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 100-TQFP
- Packaging:
- Bulk
- Product Status:
- Last Time Buy
- 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:
- -
TAS3308PZT FAQ
1.How can I place an order for TAS3308PZT through Aetrix?
Please submit a Request for Quotation (RFQ) for TAS3308PZT 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 TAS3308PZT reliable?
The price and inventory of TAS3308PZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TAS3308PZT is usually 5 days.
3.What payment methods are accepted for TAS3308PZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TAS3308PZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TAS3308PZT?
TAS3308PZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TAS3308PZT 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 TAS3308PZT?
For technical support, including TAS3308PZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TAS3308PZT requirements.
6.How does Aetrix verify that TAS3308PZT is sourced from the original manufacturer or authorized distributors?
All TAS3308PZT 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 TAS3308PZT meets industry standards.
7.What is the process for return or replacement of TAS3308PZT?
All TAS3308PZT units undergo pre-shipment inspection (PSI). If there is an issue with TAS3308PZT, 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 TAS3308PZT part is unused and in its original packaging.
Return procedure for TAS3308PZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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