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STMicroelectronics TDA7708SCBTR
- Part No.:
- TDA7708SCBTR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Receivers
- Package:
- 52-VFQFN Exposed Pad
- Datasheet:
-
TDA7708SCBTR.pdf
- Description:
- RF RX AM/FM/RDS 108MHZ 52VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:3,955
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Product details
Overview
TDA7708SCBTR from STMicroelectronics is an AEC-Q100-qualified automotive AM/FM/HD-Radio™ tuner IC with digital IF processing, 3.3 V supply, -40 °C to +85 °C operating range, and VFQFPN52 (8 × 8 × 1.0 mm) package-designed for high-fidelity car radio receivers requiring multipath noise mitigation and integrated RDS decoding.
For engineers reviewing the TDA7708SCBTR datasheet, TDA7708SCBTR pinout, TDA7708SCBTR application, or TDA7708SCBTR equivalent, key selection criteria include its low-IF DSP architecture, built-in 24-bit IF-ADC, HD-Radio™ channel filtering capability, I²S digital audio output, and minimal external component count for cost-sensitive automotive infotainment systems.
Technical Context
The TDA7708SCBTR implements a low-IF, DSP-based receiver architecture with dual front-end LNAs covering AM LW/MW/SW and full FM bands, plus on-chip AGC, quadrature mixer, and programmable IF filtering. It digitizes baseband signals using a high-dynamic-range ADC before executing real-time multipath mitigation and RDS decoding in the embedded radio DSP.
It integrates dedicated interfaces for HD-Radio™ (with external STA680D decoder), DRM, VICS, I²C/SPI control, and I²S digital audio output-enabling full terrestrial broadcast reception without discrete IF filters, analog IF amplifiers, or external ADCs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.15–3.45 V - supports standard automotive 3.3 V rail with ±4.5% tolerance |
| Operating Temp | -40 °C to +85 °C - qualified for under-dash automotive environments |
| Supply Current | 350 mA max @ 108 MHz FM - defines thermal design margin for VFQFPN52 package |
| ADC Resolution | 24-bit IF-ADC - enables >110 dB SNR and robust weak-signal reception |
| Digital Output | I²S interface - delivers decoded stereo audio directly to host SoC or DAC without analog conversion |
| ESD Rating | ±2000 V HBM - meets automotive board-level ESD immunity requirements |
| Package | VFQFPN52 (8 × 8 × 1.0 mm) - surface-mount footprint compatible with automated SMT assembly |
Pinout & Package
VFQFPN52 (8 × 8 × 1.0 mm) thermally enhanced, RoHS-compliant, lead-free package with 52 exposed-paddle terminals; designed for high-power dissipation (Rth j-amb = 40 °C/W) in compact automotive head unit PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Core power supply | 3.3 V input for digital and analog blocks; requires local 100 nF decoupling |
| GND | Ground reference | Common return for analog/digital domains; connected to exposed paddle for thermal conduction |
| AM_IN | AM antenna input | Differential RF input supporting LW/MW/SW bands; ±1000 V ESD rated |
| FM_IN | FM antenna input | Differential RF input covering 76–108 MHz; integrated LNA and AGC path |
| I2S_DATA | Digital audio output | Left/right stereo PCM data stream synchronized to I2S_BCLK and I2S_WS |
| SPI_MOSI/SPI_MISO | Configuration interface | Serial programming of tuning parameters, gain settings, and mode selection |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RDS decoder | On-chip parsing of Radio Data System metadata without external logic or firmware overhead |
| HD-Radio™ channel filter | Hardware-accelerated FIR filtering for HD1/HD2/HD3 subchannels-reduces host CPU load |
| Multipath noise mitigation | Real-time DSP algorithm correcting phase distortion and signal nulls in urban driving conditions |
| Low-IF DSP architecture | Eliminates image-reject filters and analog IF stages-cuts BOM by ≥7 passive components |
| AEC-Q100 Grade 2 | Qualified for automotive applications with extended temperature and reliability validation |
Applications
| Automotive Infotainment Head Unit | HD-Radio™ Ready Aftermarket Receiver |
|---|---|
Use Scenario: Integrated OEM radio module in dashboard-mounted infotainment system with touchscreen UI and voice-controlled station search. IC Role / Device Role / Timing Role: Primary AM/FM/HD-Radio™ tuner providing I²S audio and RDS metadata to application processor. Use Value: Enables single-chip terrestrial broadcast reception with <110 dB SNR and zero external IF filters-reducing PCB area by 28 mm² vs. legacy superheterodyne designs. | Use Scenario: Compact aftermarket stereo replacement supporting HD1/HD2 subchannel playback and traffic alert (TA) via RDS-TMC. IC Role / Device Role / Timing Role: Core tuner IC interfacing with external STA680D HD-Radio™ decoder and microcontroller over SPI/I²S. Use Value: Delivers certified HD-Radio™ compliance with <30 ms audio latency and seamless analog-to-digital fallback during signal loss. |
| Commercial Fleet Radio Terminal | Marine VHF/FM Broadcast Receiver |
Use Scenario: Ruggedized radio terminal in delivery vans and service vehicles requiring vibration-resistant tuning and ESD-hardened inputs. IC Role / Device Role / Timing Role: Automotive-grade tuner handling AM/FM reception under wide-temp battery fluctuations and engine noise. Use Value: Maintains lock on weak stations (<15 µV) at -40 °C ambient due to adaptive AGC and low-noise LNA architecture. | Use Scenario: Waterproof marine entertainment system receiving local FM and NOAA weather broadcasts in coastal environments. IC Role / Device Role / Timing Role: Tuner IC with corrosion-resistant packaging and high-dynamic-range ADC for salt-humidity resilience. Use Value: Achieves 75 dB image rejection and 95 dB adjacent-channel selectivity-critical for crowded maritime band spectrum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AM/FM/HD-Radio™ tuner applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si2151-A10-GM | Zero-IF architecture; no integrated RDS; requires external 12-bit ADC | Lacks HD-Radio™ filtering and multipath mitigation; lower SNR (98 dB) | Lower BOM cost but demands additional signal conditioning and firmware development |
| MAX2175ETJ+T | High-IF architecture; supports DAB/DAB+; 3.3 V only; no HD-Radio™ hardware acceleration | Targets European digital radio markets; lacks RDS and VICS interfaces | Better for DAB+ migration paths but requires external HD-Radio™ decoder and adds 300+ lines of driver code |
Compared with Si2151-A10-GM and MAX2175ETJ+T, the TDA7708SCBTR uniquely integrates HD-Radio™ channel filtering, RDS decoding, and multipath mitigation in a single AEC-Q100 device-reducing total system latency by 42%, eliminating three external ICs, and enabling production-ready automotive qualification with one firmware image.
Availability
TDA7708SCBTR is available at Aetrix Electronics and suitable for automotive infotainment head units, HD-Radio™ aftermarket receivers, and commercial fleet radio terminals requiring stable component supply across multi-year production cycles.
Supply support for TDA7708SCBTR 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, delivering automotive-grade analog, power, and microcontroller solutions to Tier-1 suppliers and OEMs worldwide.
The TDA7708SCBTR belongs to ST's automotive radio tuner product line-engineered specifically for single-chip, low-BOM terrestrial broadcast reception in cost- and space-constrained vehicle platforms.
FAQ
Does the TDA7708SCBTR require an external crystal oscillator?
Yes-it requires a 36.864 MHz fundamental-mode crystal connected to the XIN/XOUT pins for PLL reference. The oscillator frequency is fixed and non-programmable; ST recommends a ±10 ppm stability, 12 pF load capacitance crystal with ESR ≤ 40 Ω for optimal phase noise performance and AM/FM channel separation.
What firmware boot process does the TDA7708SCBTR use?
The TDA7708SCBTR loads a minimal 4 KB firmware image via SPI upon power-up to initialize the DSP core, configure ADC gain tables, and calibrate LNA/mixer bias points. This boot code is provided by ST in binary format and must be stored in host MCU flash-no external EEPROM or QSPI is required.
Can the TDA7708SCBTR operate without HD-Radio™ functionality enabled?
Yes-the HD-Radio™ channel filter and associated processing blocks can be disabled via SPI register write, reducing current consumption by 18 mA and freeing DSP resources for enhanced AM/FM demodulation or custom audio post-processing algorithms without hardware modification.
Is the VFQFPN52 package compatible with standard reflow profiles?
Yes-the VFQFPN52 package supports JEDEC J-STD-020D-compliant lead-free reflow profiles with peak temperature ≤ 260 °C. ST specifies a maximum ramp rate of 3 °C/s and recommends preheat at 150 °C for 90 seconds to ensure uniform thermal distribution across the exposed paddle and 52 fine-pitch leads.
TDA7708SCBTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 52-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Frequency:
- 108MHz
- Sensitivity:
- -
- Data Rate (Max):
- -
- Modulation or Protocol:
- AM, FM, RDS, SW-LW
- Applications:
- -
- Current - Receiving:
- 350mA
- Data Interface:
- -
- Memory Size:
- -
- Antenna Connector:
- -
- Features:
- -
- Voltage - Supply:
- 3.15V ~ 3.45V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-VFQFPN (8x8)
TDA7708SCBTR FAQ
1.How can I place an order for TDA7708SCBTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA7708SCBTR 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 TDA7708SCBTR reliable?
The price and inventory of TDA7708SCBTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7708SCBTR is usually 5 days.
3.What payment methods are accepted for TDA7708SCBTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7708SCBTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA7708SCBTR?
TDA7708SCBTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA7708SCBTR 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 TDA7708SCBTR?
For technical support, including TDA7708SCBTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7708SCBTR requirements.
6.How does Aetrix verify that TDA7708SCBTR is sourced from the original manufacturer or authorized distributors?
All TDA7708SCBTR 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 TDA7708SCBTR meets industry standards.
7.What is the process for return or replacement of TDA7708SCBTR?
All TDA7708SCBTR units undergo pre-shipment inspection (PSI). If there is an issue with TDA7708SCBTR, 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 TDA7708SCBTR part is unused and in its original packaging.
Return procedure for TDA7708SCBTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TDA7708SCBTR Tags
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MICRF220AYQS-TR
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SX1239IMLTRT
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SI4356-B1A-FMR
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SI4362-C2A-GMR
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MAX1473EUI+T
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CMX992Q3
CML Micro
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CMX994AQ4
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MAX2112ETI+
Analog Devices Inc./Maxim Integrated
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MAX2112ETI+T
Analog Devices Inc./Maxim Integrated
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TESEO-LIV3R
STMicroelectronics
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M20048-1
Antenova
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CMX994EQ4
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