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STMicroelectronics STA680TR
- Part No.:
- STA680TR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Receivers
- Package:
- 168-LFBGA
- Datasheet:
-
STA680TR.pdf
- Description:
- ADD INFOTAINMENT
- Quantity:
- Payment:
- Shipping:
Inventory:4,219
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Product details
Overview
STA680TR from STMicroelectronics is an AEC-Q100 qualified automotive HD Radio™ baseband receiver IC for car-radio systems. It decodes IBOC AM/FM hybrid and all-digital signals, supports dual-channel HD 1.5 for background scanning and data services, integrates HD codec (HDC) audio decompression, and delivers CD-like FM and FM-like AM audio quality with AAA algorithm support. It operates with 1.2 V core and 3.3 V I/O supplies in LFBGA168 package.
For engineers reviewing the STA680TR datasheet, STA680TR pinout, STA680TR application, or STA680TR equivalent, key selection considerations include HD Radio 1.5 dual-channel processing capability, glueless SDRAM interface up to 512 Mbit, variable-rate I²S-like baseband input (650–912 kS/s), dual tuner support via secondary RF interface, and automotive-grade reliability per AEC-Q100 Grade 2.
Technical Context
The STA680TR implements a dual-core architecture: HiFi2 core handles real-time HD audio decompression and metadata parsing (MPS/SPS/PAD), while Vectra core manages demodulation, Viterbi decoding, and system control. Its hardware accelerator offloads convolutional decoding, enabling low-latency IBOC signal recovery.
It features two independent baseband interfaces (BB1 and BB2) supporting time-division multiplexed I/Q data at programmable sample rates, plus configurable I²C/SPI host interfaces and a synchronous SDRAM controller with x16 addressing - all synchronized by dual internal PLLs and an external crystal oscillator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| AEC-Q100 Grade | Grade 2 (−40 °C to +105 °C ambient operating range) |
| Baseband Input Rate | 650 / 675 / 744.1875 / 912 kS/s - enables flexible tuner matching and HD 1.5 background scanning |
| SDRAM Interface | Glueless x16 interface supporting up to 512 Mbit - eliminates external logic for buffer memory expansion |
| Audio Output Format | I²S-compatible serial audio with programmable ASRC - allows seamless integration with multi-rate audio DACs |
| Core Supply Voltage | 1.2 V ±5% - optimized for low-power digital signal processing in automotive infotainment SoMs |
| I/O Supply Voltage | 3.3 V ±10% - compatible with standard automotive microcontroller and memory peripheral voltage rails |
| Internal Clock Sources | One crystal oscillator + two PLLs - provides independent clock domains for baseband, audio, and system buses |
Pinout & Package
LFBGA168 package (12 × 12 × 1.4 mm, 0.8 mm pitch), ECOPACK® compliant, tray and tape-and-reel (STA680TR) options.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BB1_I / BB1_Q | Primary baseband I/Q input | Accepts time-multiplexed or separate I/Q streams from HD Radio tuner; supports 650–912 kS/s |
| BB2_I / BB2_Q | Secondary baseband I/Q input | Enables dual-tuner architectures for simultaneous main reception and background scanning/data service acquisition |
| SPI1_SS0_N / SPI1_SCK / SPI1_MOSI / SPI1_MISO | Host micro SPI interface | Configurable slave interface for firmware updates, register access, and system control without CPU overhead |
| IIC1_SCL / IIC1_SDA | Primary I²C host interface | Industry-standard bidirectional control bus for configuration and status monitoring at up to 400 kHz |
| RESET_N | Active-low reset input | Synchronizes power-on initialization sequence; asserts internal state machines and disables outputs until deasserted |
| TESTMODE / TCK / TMS / TDI / TDO / TRST_N | JTAG boundary-scan interface | IEEE 1149.1-compliant debug and test access for production testing and in-system verification |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel HD 1.5 processing | Simultaneous main program service (MPS) and supplemental program service (SPS) decoding - enables background EPG update and traffic data fetch without interrupting primary audio |
| Automatic Audio Alignment (AAA) | Firmware-implemented time-synchronization between analog and digital audio paths - eliminates audible switching artifacts during hybrid AM/FM transitions |
| Metadata engine | Real-time parsing of PAD, artist/title, album art, and Apple ID3 tags - supports dynamic display and user interface enrichment in head units |
| Glueless SDRAM interface | Direct x16 connection to 512 Mbit SDRAM - reduces BOM count and PCB area vs. discrete address latches or FPGA glue logic |
| Variable-rate baseband interface | Four selectable I²S-like sampling frequencies (650/675/744.1875/912 kS/s) - matches diverse tuner output formats without resampling loss |
Applications
| Automotive HD Radio Head Unit | Dual-Tuner HD Radio Receiver |
|---|---|
|
Use Scenario: Integrated infotainment system in mid-to-high-tier vehicles requiring AM/FM HD Radio reception with metadata display and traffic alerts. IC Role / Device Role / Timing Role: Baseband processor handling IBOC demodulation, HDC audio decompression, PAD/MPS/SPS data extraction, and AAA-aligned audio output. Use Value: Enables CD-quality FM and FM-like AM audio with real-time traffic overlay and electronic program guide - meeting OEM UX requirements without external DSP. |
Use Scenario: Premium vehicle audio platform using two tuners for concurrent main listening and background scanning of alternate stations or data services. IC Role / Device Role / Timing Role: Dual-baseband interface (BB1 + BB2) and Vectra/HiFi2 cores manage parallel signal processing pipelines with deterministic latency partitioning. Use Value: Delivers uninterrupted primary audio while acquiring EPG, multicast content, or real-time traffic on secondary channel - no perceptible delay or dropouts. |
| HD Radio Reference Design Platform | Aftermarket HD Radio Module |
|
Use Scenario: Tier-1 supplier reference design for scalable HD Radio implementation across multiple vehicle platforms. IC Role / Device Role / Timing Role: Central baseband hub interfacing with tuners, SDRAM, flash, audio codecs, and host MCU via standardized SPI/I²C/SDRAM buses. Use Value: Reduces design cycle time via pre-validated glueless memory interface, JTAG debug support, and AEC-Q100 qualification - accelerates PPAP submission. |
Use Scenario: Compact aftermarket HD Radio add-on module retrofitting legacy analog radios with digital broadcast capability. IC Role / Device Role / Timing Role: Standalone HD baseband processor accepting analog tuner IF output and delivering decoded I²S audio + metadata over UART/I²C to host MCU. Use Value: Eliminates need for external FPGA or custom ASIC; leverages integrated SDRAM and flash SPI to minimize footprint and cost in space-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HD Radio baseband processing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STA660DTR | TFBGA289 package; DAB/DRM-focused; lacks HD Radio-specific AAA algorithm and PAD parser | Targeted at European digital radio (DAB+) markets; not certified for HD Radio IBOC decoding | Select when developing DAB+/DRM-only receivers; incompatible with US HD Radio broadcast standards |
| Si2168-A30 | Single-chip tuner + demodulator (no baseband processing); outputs analog/digital IF, not decoded audio/metadata | Requires external MCU + audio codec + software stack for HD Radio decoding - higher system complexity | Choose for cost-sensitive designs where full software-defined radio flexibility is preferred over integrated HDC/AAA functionality |
Compared with STA660DTR and Si2168-A30, the STA680TR uniquely integrates HD Radio-specific firmware acceleration, AAA alignment, and glueless SDRAM - reducing total BOM count and software development effort for certified automotive HD Radio deployment.
Availability
STA680TR is available at Aetrix Electronics and suitable for automotive infotainment systems, HD Radio reference designs, and aftermarket digital radio modules requiring stable component supply and long-term lifecycle support.
Supply support for STA680TR 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
STMicroelectronics is a global semiconductor leader specializing in automotive, industrial, and power management solutions, with broad IP portfolios in analog, digital, and mixed-signal technologies.
The STA680TR belongs to ST's automotive radio processor product line, designed specifically to accelerate HD Radio adoption in vehicles by integrating demodulation, decoding, audio processing, and metadata handling into a single AEC-Q100 qualified device.
FAQ
What is the maximum SDRAM capacity supported by the STA680TR?
The STA680TR supports up to 512 Mbit of SDRAM in x16 configuration via its glueless interface. This capacity accommodates HD Radio audio buffers, metadata storage, and firmware execution space without external address latching or logic. The interface complies with JEDEC standards and requires no external clock forwarding or timing compensation circuitry.
Does the STA680TR require external firmware loading?
Yes - the STA680TR requires boot firmware loaded via SPI Flash (SPI2 interface) or host microcontroller (SPI1/I²C). The device does not embed persistent application code; instead, it executes firmware that configures HD Radio demodulation parameters, activates AAA alignment, and enables PAD/EPG parsing. Factory-programmed flash is optional but not integrated on-die.
Can the STA680TR decode both AM and FM HD Radio signals simultaneously?
No - the STA680TR processes one active HD Radio channel (AM or FM) at a time for primary audio output. However, its dual-baseband interface (BB1 + BB2) enables concurrent reception: BB1 handles the main tuned station, while BB2 acquires background data (e.g., EPG, traffic) from a second tuner - supporting hybrid operation without interrupting playback.
Is the STA680TR pin-compatible with other ST radio processors?
No - the STA680TR in LFBGA168 is not pin-compatible with STA660DTR (TFBGA289) or STA670 (QFN48). While functional overlap exists in baseband processing, ball mapping, power domains, and interface routing differ significantly. Migration requires PCB redesign and firmware adaptation due to distinct SDRAM timing, clock tree, and GPIO allocation.
STA680TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 168-LFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Frequency:
- -
- Sensitivity:
- -
- Data Rate (Max):
- -
- Modulation or Protocol:
- AM, FM
- Applications:
- -
- Current - Receiving:
- -
- Data Interface:
- PCB, Surface Mount
- Memory Size:
- 512Mb SDRAM
- Antenna Connector:
- -
- Features:
- -
- Voltage - Supply:
- 1.14V ~ 1.26V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 168-LFBGA (12x12)
STA680TR FAQ
1.How can I place an order for STA680TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STA680TR 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 STA680TR reliable?
The price and inventory of STA680TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STA680TR is usually 5 days.
3.What payment methods are accepted for STA680TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STA680TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STA680TR?
STA680TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STA680TR 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 STA680TR?
For technical support, including STA680TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STA680TR requirements.
6.How does Aetrix verify that STA680TR is sourced from the original manufacturer or authorized distributors?
All STA680TR 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 STA680TR meets industry standards.
7.What is the process for return or replacement of STA680TR?
All STA680TR units undergo pre-shipment inspection (PSI). If there is an issue with STA680TR, 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 STA680TR part is unused and in its original packaging.
Return procedure for STA680TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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