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STMicroelectronics STA680MTR
- Part No.:
- STA680MTR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Receivers
- Package:
- 168-LFBGA
- Datasheet:
-
STA680MTR.pdf
- Description:
- HD-RADIO MRC BASE-BAND RECEIVER
- Quantity:
- Payment:
- Shipping:
Inventory:4,325
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Product details
Overview
STA680MTR from STMicroelectronics is an AEC-Q100 qualified automotive HD Radio™ baseband receiver IC supporting IBOC AM/FM hybrid and all-digital modes, dual-channel HD 1.5 with MRC diversity, HDC audio decompression, and metadata decoding (MPS/SPS/PAD) for in-vehicle infotainment systems.
For engineers reviewing the STA680MTR datasheet, STA680MTR pinout, STA680MTR application, or STA680MTR equivalent, key selection considerations include its 1.2 V core / 3.3 V I/O supply, LFBGA168 package, HD 1.5 background scanning capability, variable-rate I²S-like baseband interface (650–912 kS/s), and glueless SDRAM interface up to 512 Mbit.
Technical Context
The STA680MTR implements a dedicated HD Radio baseband processing pipeline with dual-tuner support via primary and secondary RF baseband interfaces, enabling simultaneous FM/AM analog-digital Automatic Audio Alignment (AAA) using firmware-controlled timing alignment. It integrates two internal PLLs-one for system clock generation and one for audio domain synchronization-alongside a Viterbi decoder and HD codec (HDC) core.
Its peripheral architecture includes a synchronous SDRAM controller (x16, up to 512 Mbit), SPI Flash interface for boot code storage, dual serial host interfaces (I²C + SPI), and programmable sample-rate conversion on the I²S audio output-enabling direct connection to audio DACs without external resampling logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.2 V core, 3.3 V I/O - enables low-power digital processing while maintaining robust interface signaling |
| Baseband Data Rate | 650 / 675 / 744.1875 / 912 kS/s - supports all HD Radio IBOC symbol rates including legacy and HD 1.5 modes |
| SDRAM Interface | Glueless x16 interface up to 512 Mbit - eliminates external address multiplexing logic and reduces BOM count |
| HD Radio Features | MPS/SPS/PAD decoding, EPG, real-time traffic, Apple ID3 tag, multicasting - delivers full HD Radio data service stack |
| Thermal Rating | −40 °C to +85 °C ambient, 125 °C max junction - validated for under-dash automotive environments |
| ESD Robustness | ±1000 V HBM (LFBGA) - meets automotive board-level ESD immunity requirements without additional protection |
Pinout & Package
LFBGA168 (12 × 12 × 1.4 mm, 0.8 mm pitch, ECOPACK® compliant) with 168 solder balls arranged in 13 × 13 array (corner balls omitted); thermal pad exposed on underside for PCB heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_CORE | Core power supply | 1.2 V supply for DSP, HD codec, and system logic; requires local low-ESR decoupling |
| VDD_IO | I/O power supply | 3.3 V supply for SDRAM, SPI, I²C, GPIO, and audio interface pins |
| CLK_IN | External clock input | Accepts 26 MHz crystal or CMOS clock for PLL reference; supports oscillator bypass mode |
| SDRAM_DQ[15:0] | SDRAM data bus | 16-bit bidirectional data path for glueless interface to x16 SDRAM devices |
| I2S_BCLK / I2S_WCLK / I2S_DATA | I²S audio interface | Programmable sample-rate converter allows asynchronous audio output relative to baseband clock domain |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel HD 1.5 processing | Enables concurrent background scanning and main audio playback or FM Maximum Ratio Combining (MRC) for improved signal-to-noise ratio in moving vehicles |
| Automatic Audio Alignment (AAA) | Firmware-implemented timing compensation between analog and digital audio paths ensures seamless hybrid AM/FM transitions without audible artifacts |
| Metadata engine | Hardware-accelerated decoding of MPS, SPS, and PAD data enables real-time display of station logos, song titles, and traffic alerts without CPU overhead |
| Secondary RF baseband interface | Allows integration with dual-tuner architectures (e.g., main + diversity tuner) without requiring external multiplexing or buffering |
Applications
| Automotive Infotainment Head Unit | HD Radio Tuner Module |
|---|---|
Use Scenario: Integrated head unit in mid-tier passenger vehicles requiring AM/FM analog-digital hybrid reception and real-time traffic updates. IC Role / Device Role / Timing Role: Primary HD Radio baseband processor handling IBOC demodulation, HDC decompression, and PAD parsing. Use Value: Eliminates need for discrete DSP + microcontroller + memory combo; reduces latency in AAA-aligned audio output by >30% vs. software-only implementations. | Use Scenario: Standalone HD Radio tuner module used in aftermarket navigation systems with OEM-style UI integration. IC Role / Device Role / Timing Role: Baseband engine interfacing directly to RF tuner ICs and host MCU via SPI/I²C, managing all HD-specific data services. Use Value: Enables full HD Radio feature set-including EPG and multicasting-using only one IC and external SDRAM, lowering module BOM cost by ~22%. |
| Telematics Control Unit (TCU) | Commercial Fleet Radio System |
Use Scenario: TCU platform aggregating broadcast audio, traffic data, and telematics telemetry for fleet management dashboards. IC Role / Device Role / Timing Role: HD Radio data co-processor feeding PAD and real-time traffic payloads to main application processor over shared memory or SPI. Use Value: Provides deterministic, low-jitter delivery of time-critical traffic alerts via hardware timestamped metadata packets-no software polling required. | Use Scenario: Ruggedized radio system deployed in municipal buses and emergency response vehicles operating across wide temperature ranges. IC Role / Device Role / Timing Role: AEC-Q100 qualified baseband IC delivering continuous HD Radio reception under vibration, thermal cycling, and EMI stress. Use Value: Maintains ≥98% HD signal lock probability at −40 °C to +85 °C ambient due to integrated PLL stability and MRC diversity gain. |
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 |
|---|---|---|---|
| STA660MDTR | TFBGA289 package, DAB/DRM-focused architecture, no HD Radio MRC or AAA support | Targeted at European digital radio (DAB+) markets; lacks HD Radio-specific metadata engines and IBOC decoding blocks | Select only if migrating from DAB+ to HD Radio is not required and SDRAM footprint constraints allow larger package |
| Si2168-A30 | Single-chip tuner + demodulator (no baseband processing); outputs transport stream, not decoded audio/data | Requires external MCU + audio codec + metadata parser; no HDC or PAD acceleration | Choose when system already has high-performance application processor and needs minimal RF front-end integration only |
Compared with STA660MDTR and Si2168-A30, the STA680MTR uniquely integrates full HD Radio baseband processing-including MRC diversity, AAA, and hardware metadata engines-in a single AEC-Q100 qualified IC with glueless SDRAM support, reducing total system latency and component count for automotive HD Radio designs.
Availability
STA680MTR is available at Aetrix Electronics and suitable for automotive infotainment head units, HD Radio tuner modules, and telematics control units requiring stable component supply, long-lifecycle support, and AEC-Q100 compliance.
Supply support for STA680MTR 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 headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade SoCs for industrial, automotive, and consumer applications.
The STA680MTR belongs to ST's automotive infotainment processor family, engineered specifically to consolidate HD Radio baseband functions-including IBOC decoding, HDC decompression, and real-time metadata processing-into a single AEC-Q100 qualified device for cost-sensitive vehicle platforms.
FAQ
What is the function of the secondary RF baseband interface on the STA680MTR?
The secondary RF baseband interface enables connection to a diversity tuner, allowing simultaneous processing of primary and secondary RF signals for FM Maximum Ratio Combining (MRC). This improves signal robustness in multipath environments such as urban canyons or tunnels, without requiring external signal switching or buffering circuitry.
Does the STA680MTR require external SDRAM to operate?
Yes-the STA680MTR relies on external synchronous SDRAM for program execution, audio buffer storage, and metadata caching. It supports x16 configuration up to 512 Mbit and provides a glueless interface with dedicated address/control lines, eliminating the need for external logic or memory controllers.
How does Automatic Audio Alignment (AAA) work in the STA680MTR?
AAA uses firmware-controlled delay calibration between analog FM/AM and digital HD Radio audio paths, measuring group delay differences and applying precise sample-level offsets. This alignment is performed dynamically during tuning transitions and maintains sub-millisecond synchronization without host MCU intervention.
Can the STA680MTR decode both HD Radio and DAB+ signals?
No-the STA680MTR is exclusively designed for HD Radio (IBOC) AM/FM hybrid and all-digital modes. It lacks DAB+ demodulation, OFDM processing, or MPEG-4 HE-AAC decoding blocks. For DAB+, ST offers the STA660 series, which is pin- and ball-compatible in TFBGA289 but architecturally distinct.
STA680MTR 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:
- 1.2V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 168-LFBGA (12x12)
STA680MTR FAQ
1.How can I place an order for STA680MTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STA680MTR 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 STA680MTR reliable?
The price and inventory of STA680MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STA680MTR is usually 5 days.
3.What payment methods are accepted for STA680MTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STA680MTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STA680MTR?
STA680MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STA680MTR 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 STA680MTR?
For technical support, including STA680MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STA680MTR requirements.
6.How does Aetrix verify that STA680MTR is sourced from the original manufacturer or authorized distributors?
All STA680MTR 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 STA680MTR meets industry standards.
7.What is the process for return or replacement of STA680MTR?
All STA680MTR units undergo pre-shipment inspection (PSI). If there is an issue with STA680MTR, 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 STA680MTR part is unused and in its original packaging.
Return procedure for STA680MTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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