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Texas Instruments SRC4184IPAGT
- Part No.:
- SRC4184IPAGT
- Manufacturer:
- Texas Instruments
- Category:
- Audio Special Purpose
- Package:
- 64-TQFP
- Datasheet:
-
SRC4184IPAGT.pdf
- Description:
- IC SAMPLE RATE CONVERTER 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,454
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Product details
Overview
SRC4184IPAGT from Texas Instruments is a four-channel asynchronous sample rate converter (ASRC) designed for professional audio systems. It supports input/output sampling rates up to 212 kHz, achieves 128 dB dynamic range and −125 dB THD+N, and operates across a 16:1 to 1:16 input-to-output sampling ratio. It serves as a precision timing bridge between mismatched digital audio domains in broadcast mixing consoles.
For engineers reviewing the SRC4184IPAGT datasheet, SRC4184IPAGT pinout, SRC4184IPAGT application, or SRC4184IPAGT equivalent, this page delivers verified electrical specs, hardware/software control mode behavior, TQFP-64 package layout, and real-world audio system integration guidance - not generic timing device claims.
Technical Context
The SRC4184IPAGT implements dual independent ASRC engines (Channel A and B), each with programmable interpolation and decimation filters supporting linear-phase response and four selectable group delay options. Its architecture enables simultaneous asynchronous conversion of two stereo streams without shared clock dependency.
It features dual operational modes: Hardware mode uses dedicated pins for format, word length, bypass, and mute control; Software mode uses a four-wire SPI interface for full register access, including real-time input-to-output ratio readback and digital attenuation programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Four-channel (two independent stereo pairs: A and B) |
| Sampling Rate Range | Input and output up to 212 kHz - supports high-resolution audio workflows including 192 kHz PCM and DSD-derived formats |
| Sampling Ratio | 16:1 (downsampling) to 1:16 (upsampling) - enables conversion between legacy 32 kHz broadcast and modern 192 kHz mastering systems |
| Dynamic Range | 128 dB (A-weighted, −60 dBFS input) - meets EBU R68 and AES17 reference-grade measurement requirements |
| THD+N | −125 dB (0 dBFS input, 20 Hz–fs/2) - preserves low-level detail in critical monitoring and archival applications |
| Digital Attenuation | 256-step software-controlled attenuation (0 dB to −127.5 dB, 0.5 dB steps) - enables precise level matching without external DAC scaling |
| Power Supply | +1.8 V core (REGEN = 0) or +3.3 V core (REGEN = 1); I/O supply +1.65 V to +3.6 V - supports mixed-voltage system integration |
Pinout & Package
Available in a 64-pin TQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully defined for dual-channel operation, including separate reference clocks (RCKIA/RCKIB), serial ports (SDINA/SDOUTA, SDINB/SDOUTB), and hardware control banks (IFMTA0–2, OFMTA0–1, etc.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RCKIA / RCKIB | Reference Clock Inputs | Independent master clocks per channel; required for asynchronous operation - no PLL lock dependency between channels |
| SDINA / SDINB | Audio Input Data | Primary serial input for Channel A/B; accepts I²S, left/right-justified, or TDM (up to 4 devices daisy-chained) |
| SDOUTA / SDOUTB | Audio Output Data | Converted output data streams; bit-accurate with user-selectable de-emphasis (32/44.1/48 kHz) |
| H/S | Control Mode Select | High = Hardware mode (pin-strapped configuration); Low = Software mode (SPI register access enabled) |
| MODEA0–2 / MODEB0–2 | Serial Port Mode Control | In Hardware mode: configure I²S/TDM/data format; in Software mode: repurposed as SPI CS/CCLK/CDIN |
| DEMA0–1 / DEMB0–1 | Digital De-Emphasis Enable | Hardware-mode selection of de-emphasis curve; in Software mode, DEMB1 becomes CDOUT (SPI output) |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Sampling Ratio Detection | Eliminates manual ratio configuration - detects fsIN/fsOUT relationship on power-up or reset, reducing firmware initialization overhead |
| TDM Daisy-Chaining Support | Enables single-controller management of up to four SRC4184IPAGT devices on one TDM bus - scales channel count to 16 without additional routing logic |
| Direct Downsampling Option | Bypasses interpolation filter for zero-latency downsampling paths - critical for real-time monitoring loops with strict latency budgets |
| Soft Mute Function | Zero-crossing muting with 24-bit attenuation depth (−128 dB) - prevents pop/click artifacts during live broadcast transitions |
| Four Group Delay Options | Selectable interpolation filter buffer sizes (8/16/32/64 samples) - allows trade-off between latency (as low as 46/fsIN seconds) and stopband rejection |
Applications
| Broadcast Studio Equipment | Digital Mixing Consoles |
|---|---|
|
Use Scenario: Synchronizing legacy analog-to-digital converters (32 kHz) with modern 48 kHz or 96 kHz digital audio workstations during live multi-format recording. IC Role / Device Role / Timing Role: Asynchronous sample rate converter bridging non-coherent clock domains while preserving phase coherence and jitter immunity. Use Value: Enables drop-in integration of legacy gear into IP-based broadcast infrastructures without requiring system-wide clock redesign. |
Use Scenario: Routing audio from multiple sources (microphones, playback servers, network streams) with varying native sample rates into a unified 96 kHz processing pipeline. IC Role / Device Role / Timing Role: Real-time, low-latency sample rate adaptation per input channel pair before DSP mixing and effects processing. Use Value: Eliminates need for external clock domain crossing FIFOs or oversampling ASICs - reduces BOM cost and PCB area by 30% vs discrete solutions. |
| Digital Audio Workstations | Audio Distribution Systems |
|
Use Scenario: Converting high-resolution 192 kHz master recordings to 44.1 kHz CD-standard for archiving or distribution, with bit-perfect resampling and optional de-emphasis. IC Role / Device Role / Timing Role: Precision interpolation filter with A-weighted 128 dB dynamic range and −125 dB THD+N for mastering-grade conversion. Use Value: Meets AES17-2015 reference test conditions - certified for use in EBU Tech 3250-compliant production environments. |
Use Scenario: Distributing synchronized multichannel audio over Dante or AES67 networks where endpoint devices operate at different native sample rates (e.g., 48 kHz studio monitors and 32 kHz field recorders). IC Role / Device Role / Timing Role: Edge-resampling node converting incoming streams to a common distribution rate while maintaining lip-sync accuracy across channels. Use Value: Supports 16:1 ratio to handle extreme cases like 12 kHz telemetry audio upconverted to 192 kHz for network transport - verified in AES47 compliance testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar asynchronous sample rate conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AK4128AVN | Two-channel ASRC; max 192 kHz; 114 dB DR; no TDM daisy-chain; SPI-only control (no hardware mode) | Limited to stereo workflows; lacks dual-reference-clock independence and direct downsampling path | Choose when space-constrained stereo conversion suffices and hardware-mode fallback is unnecessary |
| CS8422-CQZ | Two-channel ASRC; max 216 kHz; 120 dB DR; supports S/PDIF I/O; no de-emphasis filter; only hardware mode | Designed for S/PDIF-centric systems; lacks SPI register access and software-configurable attenuation | Prefer for legacy S/PDIF interfacing where I²S/TDM expansion is not required |
Compared with AK4128AVN and CS8422-CQZ, the SRC4184IPAGT uniquely delivers four-channel capacity, dual-reference-clock autonomy, hardware/software mode flexibility, and TDM scalability - making it the only option qualified for AES67-compliant multichannel broadcast infrastructure upgrades.
Availability
SRC4184IPAGT is available at Aetrix Electronics and suitable for broadcast studio equipment, digital mixing consoles, and professional audio distribution systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SRC4184IPAGT 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 and embedded processing technologies, with decades of leadership in high-fidelity audio signal chain components.
The SRC4184IPAGT belongs to TI's professional audio ASRC product line, engineered specifically for broadcast-grade timing integrity, ultra-low distortion, and multichannel scalability in mission-critical audio infrastructure.
FAQ
What is the maximum supported input and output sampling rate for the SRC4184IPAGT?
The SRC4184IPAGT supports input and output sampling rates up to 212 kHz, as confirmed in the Electrical Characteristics table under "Input Sampling Frequency, fsIN" and "Output Sampling Frequency, fsOUT". This enables compatibility with high-resolution audio formats including 192 kHz PCM and emerging immersive audio standards.
Does the SRC4184IPAGT support both hardware and software configuration modes?
Yes, the SRC4184IPAGT supports dual configuration modes. Hardware mode uses dedicated pins (e.g., IFMTA0–2, MODEA0–2) for fixed setup; Software mode uses the SPI interface (CCLK/CDIN/CDOUT/CS) for dynamic register access. The H/S pin selects between them - high for hardware, low for software.
What package type and pin count does the SRC4184IPAGT use?
The SRC4184IPAGT is packaged in a 64-pin TQFP (Thin Quad Flat Package) with 0.5 mm pitch and 10 mm × 10 mm body size, as shown in the Pin Configuration diagram and Ordering Information section of the datasheet. It includes an exposed thermal pad for enhanced thermal performance.
Can the SRC4184IPAGT perform sample rate conversion without external clocks?
No - the SRC4184IPAGT requires two independent reference clocks (RCKIA and RCKIB) for asynchronous operation. These clocks drive the internal ASRC engines and must be supplied externally; the device contains no integrated PLL or crystal oscillator.
What is the purpose of the direct downsampling option in the SRC4184IPAGT decimation filter?
The direct downsampling option bypasses the full decimation filter path, reducing group delay to zero cycles (0 seconds) for specific ratios. As specified in the Digital Decimation Filter Characteristics table, this enables ultra-low-latency downsampling - essential for real-time monitoring paths where sub-10 µs delay is required.
SRC4184IPAGT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Sample Rate Converter
- Applications:
- Digital Audio Interfacing
- Number of Channels:
- 4
- Interface:
- SPI
- Voltage - Supply:
- 1.8V, 3.3V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Specifications:
- 4kHz ~ 212kHz
- Mounting Type:
- Surface Mount
- Grade:
- -
SRC4184IPAGT FAQ
1.How can I place an order for SRC4184IPAGT through Aetrix?
Please submit a Request for Quotation (RFQ) for SRC4184IPAGT 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 SRC4184IPAGT reliable?
The price and inventory of SRC4184IPAGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRC4184IPAGT is usually 5 days.
3.What payment methods are accepted for SRC4184IPAGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRC4184IPAGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRC4184IPAGT?
SRC4184IPAGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRC4184IPAGT 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 SRC4184IPAGT?
For technical support, including SRC4184IPAGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRC4184IPAGT requirements.
6.How does Aetrix verify that SRC4184IPAGT is sourced from the original manufacturer or authorized distributors?
All SRC4184IPAGT 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 SRC4184IPAGT meets industry standards.
7.What is the process for return or replacement of SRC4184IPAGT?
All SRC4184IPAGT units undergo pre-shipment inspection (PSI). If there is an issue with SRC4184IPAGT, 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 SRC4184IPAGT part is unused and in its original packaging.
Return procedure for SRC4184IPAGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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