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Texas Instruments TAS3108IADCPG4
- Part No.:
- TAS3108IADCPG4
- Manufacturer:
- Texas Instruments
- Category:
- Audio Special Purpose
- Package:
- 38-PowerTFSOP (0.173", 4.40mm Width)
- Datasheet:
-
TAS3108IADCPG4.pdf
- Description:
- IC AUDIO SGNL PROCESSOR 38HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,089
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Product details
Overview
TAS3108IADCPG4 from Texas Instruments is an automotive-grade, fully programmable 8-channel audio digital signal processor (DSP) with integrated 8051 microcontroller, 48-bit data path, 28-bit coefficients, and 76-bit MAC. It supports sample rates from 32 kHz to 192 kHz, TDM/2-channel I2S/left/right-justified formats, and operates from a single 3.3-V supply. Used in high-fidelity automotive sound systems for real-time equalization, mixing, and format conversion.
For engineers reviewing the TAS3108IADCPG4 datasheet, TAS3108IADCPG4 pinout, TAS3108IADCPG4 application, or TAS3108IADCPG4 equivalent, key selection considerations include its AEC-Q100 Grade 2 qualification (–40°C to +105°C), dual I²C interfaces (slave + master), 38-pin TSSOP package, and support for 4-input/4-output serial audio ports with independent format configuration.
Technical Context
The TAS3108IADCPG4 integrates a fixed-point audio DSP core and an embedded M8051Warp microprocessor sharing memory-mapped resources including 3K words of 54-bit program RAM, 1K words of 48-bit data RAM, and 5.8K words of 24-bit delay RAM. Its dual I²C interface enables system-level control (I²C port #1, slave-only) and firmware/data loading from external EEPROM (I²C port #2, master-only).
Serial audio processing is handled via four independent input (SDIN1–SDIN4) and four output (SDOUT1–SDOUT4) ports, supporting simultaneous 2-channel and TDM (4/6/8-channel) formats with configurable word lengths (16/20/24/32-bit) and clocking modes (master/slave). The device uses a PLL-based clock controller accepting 6–24.576 MHz MCLKI or crystal inputs and generating MCLKO, SCLKOUT1/2, and LRCLK.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | Single 3.3-V rail powers all analog/digital sections; on-chip regulators generate internal AVDD/DVDD rails. |
| Sample Rate Range | 32 kHz to 192 kHz - supports high-resolution audio playback and automotive infotainment requirements. |
| Data Path Width | 48-bit data path with 76-bit accumulator - ensures >110 dB SNR and low quantization noise in multi-stage filtering. |
| Processing Speed | 135-MHz core clock yields >2800 processing cycles per sample at 48 kHz - enables complex FIR/IIR, dynamics, and spatial algorithms. |
| Memory Resources | 3K × 54-bit program RAM, 1K × 48-bit data RAM, 1K × 28-bit coefficient RAM, 5.8K × 24-bit delay RAM - sufficient for multi-band parametric EQ + crossover + delay compensation. |
| Audio Interfaces | 4× SDIN + 4× SDOUT pins; supports I²S, left/right-justified, and TDM (4/6/8-channel); independent input/output format selection via I²C register 0x00. |
| Temperature Grade | AEC-Q100 Grade 2 (–40°C to +105°C) - qualified for under-dash automotive audio amplifier and head unit applications. |
Pinout & Package
Package: 38-pin Thin Shrink Small-Outline Package (TSSOP), body size 9.7 mm × 4.4 mm, pitch 0.5 mm, lead count 38, exposed thermal pad not present. RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDIN1–SDIN4 | Serial audio input channels | Accept 2-channel or TDM (4/6/8) data; SDIN1 supports TDM modes exclusively when enabled. |
| SDOUT1–SDOUT4 | Serial audio output channels | Output processed audio; SDOUT1 supports TDM modes exclusively when enabled. |
| SCLKIN, SCLKOUT1, SCLKOUT2 | Bit clock I/O | SCLKIN receives bit clock in slave mode; SCLKOUT1 clocks inputs, SCLKOUT2 clocks outputs in master mode. |
| LRCLK | Sample rate clock I/O | Indicates left/right channel boundary; polarity differs between I²S (falling edge) and other formats (rising edge). |
| MCLKI / XTALI / XTALO | Master clock source | Accepts 6–24.576 MHz crystal or digital MCLKI; XTALO drives external crystal; MCLKI bypasses oscillator. |
| SDA1/SCL1, SDA2/SCL2 | Dual I²C interfaces | Port #1 (SDA1/SCL1): slave-only for host control; Port #2 (SDA2/SCL2): master-only for EEPROM boot loading. |
| RESET, PDN, GPIO | Control signals | Asynchronous active-low RESET initializes all blocks; PDN halts clocks while preserving state; GPIO is firmware-programmable I/O post-boot. |
| AVDD/DVDD, AVSS/DVSS | Power/ground | Separate analog/digital supplies reduce coupling; DVDD pins (9,30) and DVSS pins (10,29) require local decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| 48-bit data path + 76-bit MAC | Enables high-precision audio filtering without intermediate truncation, critical for low-distortion automotive EQ and crossover design. |
| Dual I²C interface (slave + master) | Allows host MCU to configure the device while enabling autonomous boot from external EEPROM - eliminates need for external code storage in host. |
| Independent input/output data format control | Permits format translation (e.g., TDM input → I²S output) without external logic, simplifying PCB layout in multi-source audio systems. |
| Soft volume controller & dither generator | Provides glitch-free attenuation and controlled noise shaping to mask quantization artifacts during low-level signal processing. |
| 15 supported stereo/TDM data formats | Covers legacy and modern audio sources (e.g., CD, Blu-ray, USB DAC, automotive ADAS audio feeds) within one hardware platform. |
Applications
| Automotive Infotainment Head Units | Digital Automotive Amplifiers |
|---|---|
Use Scenario: Central audio processor in OEM head units receiving multi-source inputs (Bluetooth, USB, tuner, CAN audio) and routing to amplifier channels. IC Role / Device Role / Timing Role: Audio DSP core performs sample-rate conversion, channel mixing, bass management, and speaker-specific time alignment. Use Value: Single-chip solution replaces discrete logic + multiple converters; AEC-Q100 qualification ensures reliability in under-dash thermal environments. |
Use Scenario: Front-end audio engine in Class-D amplifier modules, accepting TDM from head unit and delivering processed I²S to PWM modulators. IC Role / Device Role / Timing Role: Format converter and real-time equalizer; handles 8-channel TDM-to-4-channel I²S translation with <2.5-sample latency. Use Value: Eliminates external format bridge ICs; deterministic latency enables precise phase alignment across amplifier channels. |
| Home Theater AV Receivers | Professional Audio Distribution Systems |
Use Scenario: Audio preprocessing stage in 7.1/9.1-channel receivers, applying room correction, dynamic range compression, and upmixing. IC Role / Device Role / Timing Role: High-precision DSP executing multi-band parametric EQ and FIR-based acoustic correction using full 48-bit path. Use Value: 5.8K delay RAM enables up to 122.5 ms channel delay at 48 kHz - sufficient for large-room acoustic calibration. |
Use Scenario: Digital audio matrix switcher in broadcast studios or live sound rigs, routing and converting between I²S, TDM, and left-justified streams. IC Role / Device Role / Timing Role: Format-transparent serial audio router with independent input/output configuration and mute-synchronized reconfiguration. Use Value: Supports hot-swappable source switching without audio glitches via coordinated mute + SAP reconfig sequence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS3204PAG | 4-channel audio DSP (vs. 8-channel); lower memory (1.5K program RAM); no integrated 8051 MCU; supports only 32–96 kHz sample rates. | Targeted at cost-sensitive 4-channel amplifiers or compact soundbars where full 8-channel processing is unnecessary. | Select when system requires only 4-channel I/O and simpler firmware architecture without embedded MCU control. |
| TAS5756MRTVR | Integrated Class-D amplifier + audio DSP; 2× SDIN/2× SDOUT; 32-bit data path; includes hardware volume control and protection circuitry. | Designed for direct-drive amplifier applications - combines processing and power output in one package. | Choose when replacing both standalone DSP and external amplifier stages; not suitable as drop-in replacement for pure signal processing roles. |
Compared with TAS3108IADCPG4, TAS3204PAG offers reduced channel count and memory but lower BOM cost for simpler systems, while TAS5756MRTVR integrates power output at the expense of flexibility and precision - neither matches the TAS3108IADCPG4's combination of 8-channel programmability, AEC-Q100 qualification, and dual I²C autonomy.
Availability
TAS3108IADCPG4 is available at Aetrix Electronics and suitable for automotive infotainment, digital amplifier modules, and home theater receivers requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.
Supply support for TAS3108IADCPG4 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 over 50 years of innovation in high-reliability audio and automotive ICs.
The TAS3108IADCPG4 belongs to TI's automotive-qualified audio DSP product line, designed specifically for real-time, high-fidelity audio processing in thermally demanding vehicle environments with emphasis on format flexibility, low-latency operation, and functional safety readiness.
FAQ
What is the operating temperature range for the TAS3108IADCPG4?
The TAS3108IADCPG4 is rated for –40°C to +105°C and is AEC-Q100 Grade 2 qualified, making it suitable for under-dash automotive applications where ambient temperatures exceed commercial-grade limits. This rating is verified per TI's production test flow and applies to the full functional specification, including audio processing accuracy and I²C timing compliance.
Does the TAS3108IADCPG4 support both master and slave clock modes?
Yes, the TAS3108IADCPG4 supports both master and slave clock modes via I²C register 0x00. In master mode, it generates MCLKO, SCLKOUT1/2, and LRCLK from internal PLL; in slave mode, it accepts MCLKI, SCLKIN, and LRCLK. Clock error detection is not implemented - system-level supervision is required.
How many serial audio channels does the TAS3108IADCPG4 support?
The TAS3108IADCPG4 supports four independent serial audio input channels (SDIN1–SDIN4) and four independent output channels (SDOUT1–SDOUT4). SDIN1 and SDOUT1 additionally support TDM formats (4/6/8-channel), while SDIN2–SDIN4 and SDOUT2–SDOUT4 are limited to 2-channel formats.
What memory resources are available on the TAS3108IADCPG4 for audio algorithm development?
The TAS3108IADCPG4 provides 3K words of 54-bit program RAM, 1K words of 48-bit data RAM, 1K words of 28-bit coefficient RAM, and 5.8K words of 24-bit delay RAM. These resources enable implementation of multi-band parametric EQ, FIR crossovers, and channel-specific delay compensation - e.g., 5.8K delay RAM supports up to 122.5 ms delay at 48 kHz.
Can the TAS3108IADCPG4 perform format conversion between TDM and I²S?
Yes, the TAS3108IADCPG4 supports format conversion between TDM (left-justified or I²S) and 2-channel I²S, right-justified, or left-justified formats as listed in Table 3-1 of the datasheet. Conversion is performed in real time with deterministic latency - 1.5 or 2.5 samples depending on whether I²S is used on input, output, or both.
TAS3108IADCPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 38-PowerTFSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Function:
- Audio Signal Processor
- Applications:
- Audio
- Number of Channels:
- 4
- Interface:
- I2C
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Specifications:
- -
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
TAS3108IADCPG4 FAQ
1.How can I place an order for TAS3108IADCPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TAS3108IADCPG4 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 TAS3108IADCPG4 reliable?
The price and inventory of TAS3108IADCPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TAS3108IADCPG4 is usually 5 days.
3.What payment methods are accepted for TAS3108IADCPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TAS3108IADCPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TAS3108IADCPG4?
TAS3108IADCPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TAS3108IADCPG4 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 TAS3108IADCPG4?
For technical support, including TAS3108IADCPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TAS3108IADCPG4 requirements.
6.How does Aetrix verify that TAS3108IADCPG4 is sourced from the original manufacturer or authorized distributors?
All TAS3108IADCPG4 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 TAS3108IADCPG4 meets industry standards.
7.What is the process for return or replacement of TAS3108IADCPG4?
All TAS3108IADCPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TAS3108IADCPG4, 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 TAS3108IADCPG4 part is unused and in its original packaging.
Return procedure for TAS3108IADCPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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