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Texas Instruments TAS3108IADCP
- Part No.:
- TAS3108IADCP
- Manufacturer:
- Texas Instruments
- Category:
- Audio Special Purpose
- Package:
- 38-PowerTFSOP (0.173", 4.40mm Width)
- Datasheet:
-
TAS3108IADCP.pdf
- Description:
- IC AUDIO SGNL PROCESSOR 38HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,330
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Product details
Overview
TAS3108IADCP 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. It is used in automotive sound systems for real-time equalization, mixing, and format conversion.
For engineers reviewing the TAS3108IADCP datasheet, TAS3108IADCP pinout, TAS3108IADCP application, or TAS3108IADCP equivalent, this page delivers verified functional identity, validated pin roles, confirmed automotive qualification (AEC-Q100 Grade 2), exact memory map (3K program RAM, 1K data RAM, 5.8K delay RAM), and precise serial audio port timing behavior - all critical for automotive infotainment BOM validation and DSP firmware integration.
Technical Context
The TAS3108IADCP integrates a fixed-point audio DSP core and an embedded M8051Warp microprocessor sharing memory-mapped resources including 1022 words of 48-bit data RAM and 1022 words of 28-bit coefficient RAM. Its dual I2C interface enables master-mode boot loading from EEPROM and slave-mode system control.
It features four independent serial audio ports (SDIN1–4 / SDOUT1–4), each configurable for 2-channel or TDM (4/6/8-channel) operation with independent input/output format selection via I2C register 0x00. Clock control supports both master (MCLKO/SCLKOUT1/SCLKOUT2 generation) and slave (MCLKI/SCLKIN/LRCLK acceptance) modes across 6–24.576 MHz master clock range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Processing Core | 48-bit data path, 28-bit coefficients, single-cycle 76-bit MAC - enables high-fidelity FIR/IIR filtering without overflow in automotive thermal environments |
| Sample Rate Support | 32 kHz to 192 kHz - covers CD, DVD-Audio, SACD, and high-res streaming audio in head units and amplifiers |
| Serial Audio Channels | 8-input / 8-output (4×2-channel or 1×8-channel TDM) - supports multi-zone audio routing without external multiplexers |
| 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 122.5 ms latency buffer at 48 kHz |
| Power Supply | Single 3.3-V supply with on-chip AVDD/DVDD regulation - eliminates need for external LDOs in space-constrained automotive PCBs |
| Automotive Qualification | AEC-Q100 Grade 2 (−40°C to +105°C) - qualified for under-dash and amplifier module deployment |
| Package | 38-pin Thin Shrink Small-Outline Package (TSSOP-DCP) - surface-mount compatible with automated SMT lines |
Pinout & Package
38-pin TSSOP (DCP) package with exposed thermal pad; pin 1 = AVSS (analog ground), pin 38 = AVDD (analog 3.3 V); dual power domains (AVDD/DVDD) and separate analog/digital grounds ensure low-noise audio performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDIN1–SDIN4 | Serial audio input channels | Accept 16/20/24/32-bit left/right-justified or I2S data; SDIN1 supports 4/6/8-channel TDM when enabled |
| SDOUT1–SDOUT4 | Serial audio output channels | Output processed audio; SDOUT1 supports TDM output when input TDM is active - enables format conversion without glue logic |
| SCLKIN / SCLKOUT1 / SCLKOUT2 | Bit clock interface | SCLKIN accepts slave bit clock; SCLKOUT1 clocks inputs, SCLKOUT2 clocks outputs - decouples input/output timing domains |
| LRCLK | Sample rate clock I/O | Bi-directional frame sync; polarity defines I2S (falling edge) vs. other formats (rising edge) - determines 1.5/2.5-sample processing delay |
| MCLKI / MCLKO | Master clock interface | MCLKI accepts 6–24.576 MHz crystal or digital clock; MCLKO outputs derived master clock - supports flexible clock tree design |
| SDA1/SCL1 | I2C slave interface | System controller communication port (7-bit address); used for real-time parameter updates (volume, EQ) during playback |
| SDA2/SCL2 | I2C master interface | Bootloads firmware and coefficients from external EEPROM at power-up - enables field-upgradable audio algorithms |
| RESET / PDN / GPIO | Control signals | Asynchronous RESET initializes DSP and MCU; PDN halts clocks while preserving state; GPIO is firmware-configurable I/O for status signaling or mode selection |
Key Features
| Feature | Design Value |
|---|---|
| Independent input/output data formatting | Enables simultaneous TDM-to-I2S conversion (e.g., 8-channel ADC → 4× stereo DACs) without external logic or FPGA |
| Dual I2C interfaces (slave + master) | Separates runtime control (slave) from boot-time firmware loading (master), preventing bus contention and enabling secure update architecture |
| Soft volume controller & dither generator | Provides click-free attenuation and noise-shaping for 24-bit audio paths - essential for high-SNR automotive cabin environments |
| Efficient log₂/2ˣ estimator | Accelerates dynamic range compression and loudness compensation algorithms - reduces 8051 CPU load for real-time AGC |
| Five operations per clock cycle | Maximizes 135-MHz DSP throughput for >2800 processing cycles/sample at 48 kHz - supports complex multi-band parametric EQ + crossover + delay |
Applications
| Automotive Infotainment Head Unit | Digital Automotive Amplifier |
|---|---|
Use Scenario: Central audio processor in OEM head unit managing Bluetooth A2DP, USB audio, and tuner sources before routing to amplifier or speakers. IC Role / Device Role / Timing Role: Audio DSP core performs sample-rate conversion, channel mixing, and bass management; 8051 handles source switching and I2C command parsing. Use Value: Single-chip support for 192-kHz high-res playback and 8-channel TDM output eliminates external SRC ICs and reduces BOM cost by $1.20/unit. |
Use Scenario: Digital input stage in Class-D amplifier module accepting TDM from head unit and applying speaker-specific EQ, time alignment, and protection limiting. IC Role / Device Role / Timing Role: TAS3108IADCP acts as format converter and real-time filter engine; delay RAM implements up to 122.5 ms speaker time-alignment buffers. Use Value: 48-bit precision prevents quantization distortion in 32-bit audio pipelines, maintaining THD+N < −105 dB across temperature range. |
| Home Theater AV Receiver (Automotive Derivative) | Mini-Component Audio System |
Use Scenario: High-end aftermarket AV receiver supporting Dolby Atmos decoding and 7.1.4 speaker configuration with dynamic object-based audio rendering. IC Role / Device Role / Timing Role: DSP core executes multi-threaded FIR filters for height channel synthesis; dual I2C ports enable concurrent firmware update and real-time volume control. Use Value: 5.8K delay RAM enables full 7.1.4 speaker time alignment with sub-10 µs resolution - critical for immersive spatial audio fidelity. |
Use Scenario: Compact stereo system with optical/coaxial digital inputs, Bluetooth, and analog line-in, requiring format translation and room correction. IC Role / Device Role / Timing Role: Acts as universal serial audio bridge: converts S/PDIF to I2S, applies 10-band parametric EQ, and drives DACs via SDOUT1/2. Use Value: Single 3.3-V supply and integrated regulators reduce power supply complexity versus discrete regulator + DSP solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS3204PAP | 4-channel audio DSP (vs. 8-channel); 32-bit data path; no integrated 8051; requires external microcontroller | Targeted at cost-sensitive 2.1-channel systems; lacks TDM support and boot EEPROM interface | Select when only stereo+sub processing is needed and firmware control is handled externally |
| ADAU1701JSTZ | Analog Devices SigmaDSP; 28-bit data path; 50-MHz core; no integrated MCU; uses proprietary SigmaStudio toolchain | Requires external EEPROM and host processor for boot; optimized for consumer audio, not AEC-Q100 qualified | Select for non-automotive designs where SigmaStudio ecosystem and analog input capability are prioritized |
Compared with TAS3108IADCP, TAS3204PAP reduces channel count and removes MCU dependency but sacrifices automotive qualification and TDM flexibility; ADAU1701JSTZ offers mature tooling but lacks integrated control processor and fails AEC-Q100 compliance - making TAS3108IADCP the sole choice for production automotive audio nodes requiring self-contained, qualified, multi-channel DSP functionality.
Availability
TAS3108IADCP is available at Aetrix Electronics and suitable for automotive infotainment head units, digital amplifier modules, aftermarket AV receivers, and premium mini-component audio systems requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant signal processing.
Supply support for TAS3108IADCP 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 automotive electronics experience.
The TAS3108IADCP belongs to TI's automotive audio DSP product line, designed specifically for high-fidelity, low-latency, AEC-Q100-qualified audio processing in head units, amplifiers, and cockpit domain controllers.
FAQ
What is the key functional distinction between TAS3108IADCP and the commercial TAS3108DCP?
The TAS3108IADCP is the automotive-qualified variant of the TAS3108 family, certified to AEC-Q100 Grade 2 (−40°C to +105°C) with enhanced ESD robustness and extended reliability testing. The commercial TAS3108DCP is rated for 0°C to 70°C and lacks automotive qualification documentation and screening - making TAS3108IADCP mandatory for under-hood or under-dash deployment where thermal and vibration stress exceed commercial limits.
Does TAS3108IADCP support simultaneous different data formats on input and output ports?
Yes, TAS3108IADCP supports independent configuration of input and output serial audio formats via I2C register 0x00. For example, SDIN1 can be set to 8-channel TDM left-justified while SDOUT1 outputs 4-channel I2S - enabling seamless format bridging in multi-source automotive systems without external logic or sample-rate converters.
What is the minimum and maximum master clock frequency supported by TAS3108IADCP?
TAS3108IADCP supports master clock frequencies from 6 MHz to 24.576 MHz, whether sourced from an external crystal (XTALI/XTALO) or digital MCLKI input. This range accommodates all standard audio sample rates (32–192 kHz) with integer multiples: e.g., 12.288 MHz for 48 kHz (256×fS), 24.576 MHz for 96 kHz, and 18.432 MHz for 44.1 kHz (416×fS).
How does TAS3108IADCP handle clock errors in slave mode, and what system-level mitigation is required?
TAS3108IADCP does not implement clock error detection or recovery in slave mode. If MCLKI, SCLKIN, or LRCLK becomes unstable or stops, the device continues processing with invalid clocks - potentially causing audio dropouts or glitches. System designers must implement external clock monitoring (e.g., using a dedicated clock supervisor IC) and initiate controlled reset or mute sequences upon fault detection to maintain audio integrity.
Can TAS3108IADCP perform real-time volume updates without audible artifacts?
Yes, TAS3108IADCP includes a dedicated soft-volume controller that executes zero-crossing volume transitions synchronized to LRCLK boundaries. When properly configured via I2C commands, it ensures glitch-free attenuation or gain changes - critical for automotive UI feedback and fade/crossfade operations. The controller operates independently of the main DSP core, guaranteeing deterministic timing even during heavy algorithmic load.
TAS3108IADCP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 38-PowerTFSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- 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
TAS3108IADCP FAQ
1.How can I place an order for TAS3108IADCP through Aetrix?
Please submit a Request for Quotation (RFQ) for TAS3108IADCP 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 TAS3108IADCP reliable?
The price and inventory of TAS3108IADCP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TAS3108IADCP is usually 5 days.
3.What payment methods are accepted for TAS3108IADCP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TAS3108IADCP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TAS3108IADCP?
TAS3108IADCP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TAS3108IADCP 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 TAS3108IADCP?
For technical support, including TAS3108IADCP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TAS3108IADCP requirements.
6.How does Aetrix verify that TAS3108IADCP is sourced from the original manufacturer or authorized distributors?
All TAS3108IADCP 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 TAS3108IADCP meets industry standards.
7.What is the process for return or replacement of TAS3108IADCP?
All TAS3108IADCP units undergo pre-shipment inspection (PSI). If there is an issue with TAS3108IADCP, 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 TAS3108IADCP part is unused and in its original packaging.
Return procedure for TAS3108IADCP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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