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STMicroelectronics STA680MDTR
- Part No.:
- STA680MDTR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Receivers
- Package:
- 289-TFBGA
- Datasheet:
-
STA680MDTR.pdf
- Description:
- HD-RADIO MRC BASE-BAND RECEIVER
- Quantity:
- Payment:
- Shipping:
Inventory:4,336
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Product details
Overview
STA680MDTR 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 FM Maximum Ratio Combining (MRC) diversity, HD codec audio decompression, and metadata decoding (MPS/SPS/PAD). It operates with 1.2 V core and 3.3 V I/O supplies and targets car-radio head units requiring CD-like FM audio quality and real-time traffic data.
For engineers reviewing the STA680MDTR datasheet, STA680MDTR pinout, STA680MDTR application, or STA680MDTR equivalent, key selection considerations include its TFBGA289 package compatibility with STA660, glueless SDRAM interface up to 512 Mbit (x16), variable-rate I²S-like baseband input (650–912 kS/s), and dual-tuner secondary RF interface support.
Technical Context
The STA680MDTR implements a dedicated HD Radio baseband processing architecture with two internal PLLs (system and audio), a Viterbi decoder, HD codec (HDC), and AAA (Automatic Audio Alignment) firmware support for synchronized analog/digital audio playback. Its dual-channel HD 1.5 engine enables concurrent background scanning and data services while maintaining MRC diversity for robust reception in multipath environments.
It integrates a synchronous SDRAM controller (x16, up to 512 Mbit), SPI Flash interface for boot code storage, I²C/SPI host interfaces, and programmable sample-rate converter on the I²S audio output - all coordinated by a dedicated DSP core and peripheral bus matrix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltages | 1.2 V core, 3.3 V I/O, 1.8 V oscillator, 2.75 V PLL analog, 1.47 V PLL digital |
| Baseband Input Rate | 650 / 675 / 744.1875 / 912 kS/s I²S-like interface - supports dynamic tuning of sampling alignment per broadcast standard |
| SDRAM Interface | Glueless x16 interface addressing up to 512 Mbit - eliminates external logic for memory expansion in head-unit designs |
| HD Radio Modes | IBOC AM/FM hybrid + all-digital; dual-channel HD 1.5 with MRC diversity - enables simultaneous main service + data/traffic channel decoding |
| Audio Output | I²S serial interface with programmable sample-rate converter - allows direct connection to audio DACs at 44.1/48/88.2/96 kHz without external resampling |
| Package | TFBGA289 (15×15×1.2 mm, 0.8 mm pitch) - ball-to-ball compatible with STA660 DAB/DRM decoder for platform reuse |
| Qualification | AEC-Q100 Grade 3 (−40 °C to +85 °C ambient) - certified for under-dash automotive deployment |
Pinout & Package
STA680MDTR is housed in a 15×15 mm TFBGA289 package with 0.8 mm ball pitch and ECOPACK® compliance. The package provides dedicated power domains (VDD_CORE, VDD_IO, VDD_OSC, VDD_PLL_ANA/DIG), differential clock inputs, and segregated high-speed interfaces including SDRAM, SPI Flash, I²S, and dual I²C/SPI host buses.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_CORE | Core supply rail | 1.2 V supply for DSP core, Viterbi decoder, and HD codec logic - requires low-noise regulation |
| VDD_IO | General I/O supply | 3.3 V supply for SDRAM, SPI, I²C, GPIO, and I²S interface drivers - shared across multiple peripheral banks |
| CLK_IN | External clock input | Differential 24.576 MHz reference for system PLL - enables precise timing synchronization with tuner and audio subsystems |
| SDRAM_DQ[15:0] | SDRAM data bus | 16-bit bidirectional data path for glueless interface to x16 SDRAM - supports burst reads/writes at up to 133 MHz |
| SPI_FLASH_CS | Flash chip select | Active-low enable for optional external SPI Flash storing boot firmware and configuration tables - configurable as GPIO if unused |
| I2S_WS / I2S_SCK / I2S_SD | I²S audio interface | Left/right word select, bit clock, and serial data lines - support programmable sample-rate conversion for flexible DAC interfacing |
Key Features
| Feature | Design Value |
|---|---|
| FM Maximum Ratio Combining (MRC) | Dual-tuner diversity combining algorithm implemented in hardware - improves SNR by up to 4 dB in urban multipath without host CPU overhead |
| HD Codec (HDC) Decompression | Real-time decoding of HD Radio audio streams (HE-AAC v2) - delivers CD-quality FM audio and FM-quality AM audio within 20 ms latency |
| Program Associated Data (PAD) Engine | Hardware-accelerated parsing of MPS/SPS/PAD metadata - enables display of station logos, song titles, and real-time traffic alerts without firmware intervention |
| Automatic Audio Alignment (AAA) | Firmware-supported time-synchronization between analog and digital audio paths - eliminates lip-sync drift during hybrid mode transitions |
| Secondary RF Baseband Interface | Dedicated I²S-like input for second tuner - enables true dual-tuner HD Radio reception without multiplexing or time-division sharing |
Applications
| Automotive Infotainment Head Unit | Dual-Tuner HD Radio Receiver |
|---|---|
Use Scenario: Integrated car stereo system delivering HD Radio audio, traffic alerts, and station metadata to LCD display and speakers. IC Role / Device Role / Timing Role: Primary baseband processor handling IBOC signal demodulation, HDC decompression, PAD parsing, and AAA-aligned audio output. Use Value: Enables single-chip HD Radio functionality with no external DSP or SDRAM controller - reduces BOM count and PCB area by 35% vs discrete solutions. | Use Scenario: Premium vehicle audio system using two independent tuners for seamless background scanning and primary service playback. IC Role / Device Role / Timing Role: Dual-channel HD 1.5 processor executing MRC diversity on primary path while decoding EPG and multicasting data on secondary path. Use Value: Achieves <100 ms service interruption during tuner handover - meets OEM requirements for uninterrupted audio during station search. |
| HD Radio Traffic Information Terminal | Aftermarket HD Radio Retrofit Module |
Use Scenario: Standalone traffic information display unit receiving real-time traffic via HD Radio SPS channel in commercial fleet vehicles. IC Role / Device Role / Timing Role: Dedicated HD Radio data processor extracting and formatting real-time traffic messages from SPS stream with timestamp validation. Use Value: Delivers verified traffic event data with <500 ms end-to-end latency - supports dynamic route recalculation in navigation systems. | Use Scenario: Plug-in HD Radio upgrade module for legacy analog car radios using existing antenna and speaker wiring. IC Role / Device Role / Timing Role: Self-contained baseband receiver providing decoded I²S audio and UART-based metadata to host MCU over I²C. Use Value: Requires only 3.3 V power and two-wire I²C control - enables retrofit integration without modifying original radio chassis or harness. |
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 |
|---|---|---|---|
| STA680MTR | LFBGA168 package (12×12 mm); lacks ball-to-ball compatibility with STA660; same core functionality and specs | Preferred where board space is constrained and STA660 reuse is not required | Select when footprint size is prioritized over platform compatibility |
| STA660DTR | DAB/DRM-only decoder; no HD Radio support; shares TFBGA289 footprint and SDRAM interface but different baseband engine | Used in European markets requiring DAB+ and DRM, not HD Radio | Choose only for DAB/DRM applications - not a functional substitute for HD Radio decoding |
Compared with STA680MTR and STA660DTR, STA680MDTR uniquely combines HD Radio IBOC decoding, MRC diversity, and TFBGA289 compatibility with the STA660 platform - enabling scalable multi-standard radio development without redesigning memory or host interface layouts.
Availability
STA680MDTR is available at Aetrix Electronics and suitable for automotive infotainment head units, dual-tuner HD Radio receivers, and aftermarket retrofit modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for STA680MDTR 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, designing and manufacturing microcontrollers, analog ICs, power management, sensors, and automotive-grade processors.
The STA680M product line delivers integrated HD Radio baseband solutions targeting automotive OEMs and Tier-1 suppliers needing AEC-Q100-compliant, production-ready radio processors with minimal external components.
FAQ
What is the function of the secondary RF baseband interface on STA680MDTR?
The secondary RF baseband interface is a dedicated I²S-like input supporting concurrent reception from a second tuner. It enables background scanning, data service decoding (e.g., EPG, multicasting), or MRC diversity combining without time-division multiplexing - preserving full bandwidth for both primary and secondary channels.
Does STA680MDTR require external SDRAM to operate?
Yes - STA680MDTR requires external synchronous SDRAM connected via its glueless x16 interface. It supports up to 512 Mbit in x16 configuration (e.g., 32 M×16 device) and does not include embedded memory. Boot code may be stored in optional SPI Flash, but runtime audio and metadata buffers reside in SDRAM.
How does Automatic Audio Alignment (AAA) work in STA680MDTR?
AAA synchronizes analog and digital audio paths by measuring propagation delay differences and applying real-time sample offset correction in firmware. It uses internal timestamping of IBOC packet arrival and analog ADC capture events, then adjusts I²S output timing to align playback - eliminating audible lip-sync artifacts during hybrid AM/FM mode transitions.
Is STA680MDTR pin-compatible with any other ST HD Radio devices?
STA680MDTR is ball-to-ball compatible with STA660DTR in the TFBGA289 package, enabling mechanical and layout reuse between HD Radio and DAB/DRM platforms. However, it is not pin-compatible with STA680MTR (LFBGA168) due to differing ball counts and signal assignments.
STA680MDTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 289-TFBGA
- 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:
- 289-TFBGA (15x15)
STA680MDTR FAQ
1.How can I place an order for STA680MDTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STA680MDTR 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 STA680MDTR reliable?
The price and inventory of STA680MDTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STA680MDTR is usually 5 days.
3.What payment methods are accepted for STA680MDTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STA680MDTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STA680MDTR?
STA680MDTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STA680MDTR 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 STA680MDTR?
For technical support, including STA680MDTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STA680MDTR requirements.
6.How does Aetrix verify that STA680MDTR is sourced from the original manufacturer or authorized distributors?
All STA680MDTR 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 STA680MDTR meets industry standards.
7.What is the process for return or replacement of STA680MDTR?
All STA680MDTR units undergo pre-shipment inspection (PSI). If there is an issue with STA680MDTR, 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 STA680MDTR part is unused and in its original packaging.
Return procedure for STA680MDTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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