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STMicroelectronics TDA7786MTR
- Part No.:
- TDA7786MTR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Receivers
- Package:
- 64-LQFP
- Datasheet:
-
TDA7786MTR.pdf
- Description:
- RF RECEIVER AM/FM/WB 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,741
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Product details
Overview
TDA7786MTR from STMicroelectronics is an AEC-Q100-qualified automotive AM/FM/WX tuner IC with integrated VCO, high-performance PLL, digital IF processing, RDS demodulation, stereo decoding with noise-blanker, and MuSICA multipath noise reduction algorithm. It operates from a single 5 V supply in LQFP64 package and supports HD Radio™ baseband filtering and I²S digital audio I/O for car-radio head units.
For engineers reviewing the TDA7786MTR datasheet, TDA7786MTR pinout, TDA7786MTR application, or TDA7786MTR equivalent, key selection considerations include FM multipath immunity (enhanced vs. TDA7786), integrated AM LNA + PIN diodes, adaptive IF bandwidth control, drift-free digital IF architecture, and I²C-controlled configuration for automotive infotainment systems.
Technical Context
The TDA7786MTR implements a fully integrated digital IF architecture with dual-path ADCs feeding a programmable DSP core, enabling simultaneous analog FM/AM/WX reception and parallel IBOC (HD Radio™) baseband filtering. Its PLL synthesizer delivers world-band tuning with <±100 Hz frequency accuracy and <10 ms channel switching time.
FM front-end includes automatic self-alignment of pre-selection filters and image rejection, while AM section integrates low-noise LNA, AGC with dual time constants (TCAM/TCAM2), and mixer stages optimized for MW/LW/SW bands. The MuSICA algorithm operates within the DSP to suppress multipath-induced distortion without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | Single 5 V rail powers RF, analog, and digital sections - eliminates need for multi-rail power design. |
| FM Sensitivity | 1.1 µV (26 dB S/N) - enables reliable reception in weak-signal urban environments. |
| AM MW Selectivity | 55 dB @ ±9 kHz - rejects adjacent-channel interference in crowded medium-wave bands. |
| RDS Block Sync | Full group synchronization with error correction - ensures robust traffic/weather data decoding. |
| Digital Audio Interface | I²S input/output at 32/24/20/16-bit resolution - supports flexible sample rate conversion for MCU or DSP host. |
| MuSICA Algorithm | Proprietary multipath noise reduction - improves stereo separation and reduces flutter in moving vehicles. |
| Operating Temp | −40 °C to +105 °C - meets automotive under-hood thermal requirements per AEC-Q100 Grade 2. |
Pinout & Package
LQFP64 (10 × 10 × 1.4 mm) package with exposed thermal pad; RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FMPINDRV | FM PIN diode driver output | Drives external FM antenna switch; enables active antenna biasing without discrete FET. |
| LNAin | AM LNA input | High-impedance RF input for MW/LW/SW antennas; optimized for <2 nV/√Hz noise figure. |
| SCL / SDA | I²C bus interface | Configures all internal registers, enables firmware updates, and reports status (e.g., RDSINT). |
| I²S_BCLK / I²S_WCLK / I²S_SD | Digital audio interface | Transfers decoded stereo audio or HD Radio™ baseband data to external decoder or DSP. |
| RSTN | Reset input (active-low) | Hardware reset with internal pull-up; synchronizes internal state machines and PLL lock sequence. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated AM LNA + PIN diodes | Eliminates 4–6 external transistors and matching components in AM front-end design. |
| Automatic FM front-end alignment | Calibrates pre-selection filter center frequency and image rejection in <500 ms at power-on. |
| Digital IF with adaptive bandwidth | Switches between 200 kHz (wideband) and 20 kHz (narrowband) IF filters based on signal strength and modulation. |
| Drift-free stereo decoder | Uses digital PLL and phase-locked carrier recovery - no analog varactor or tuning capacitor required. |
| MuSICA multipath mitigation | Real-time DSP-based cancellation of delayed signal replicas - improves mono/stereo blend stability at highway speeds. |
Applications
| FM/AM Car Radio Head Unit | HD Radio™ Hybrid Receiver |
|---|---|
Use Scenario: Integrated infotainment system in mid-tier passenger vehicles requiring analog broadcast + digital metadata. IC Role / Device Role / Timing Role: Primary tuner IC handling RF downconversion, IF digitization, RDS parsing, and stereo audio generation. Use Value: Reduces BOM count by 32% vs. discrete tuner + decoder solutions; supports OTA firmware updates via I²C. | Use Scenario: Premium vehicle audio platform supporting simultaneous analog FM and HD Radio™ IBOC streams. IC Role / Device Role / Timing Role: Provides parallel analog IF path and digital baseband output (SAI_BB) for external HD Radio™ decoder ASIC. Use Value: Enables seamless digital-analog audio blending without latency mismatch; maintains legacy compatibility during HD transition. |
| Weather Band (WX) Emergency Radio | Aftermarket Navigation + Tuner Module |
Use Scenario: Municipal fleet communication device receiving NOAA weather alerts in North America. IC Role / Device Role / Timing Role: WX band receiver with dedicated IF chain and high-dynamic-range ADC for 162 MHz signals. Use Value: Achieves −110 dBm sensitivity at 162.55 MHz with <3 dB NF - meets NWS alert reliability thresholds. | Use Scenario: Compact aftermarket Android Auto head unit with space-constrained PCB layout. IC Role / Device Role / Timing Role: Single-chip tuner replacing legacy multi-IC designs; interfaces directly to SoC via I²S/I²C. Use Value: Cuts board area by 45% and eliminates 11 passive components per band; LQFP64 simplifies reflow assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AM/FM tuner applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDA7786TR | No MuSICA algorithm; identical pinout, register map, and I/O interface. | Lacks multipath mitigation - suitable only for static or low-speed installations. | Select when cost sensitivity outweighs dynamic FM performance requirements. |
| Si4790x series | Software-defined radio architecture; requires external crystal and separate LNA for AM. | Higher flexibility in band support but needs >12 additional passives and custom firmware stack. | Prefer for global multi-standard designs (DAB+, DRM) where software configurability is critical. |
Compared with TDA7786TR, the TDA7786MTR adds measurable FM multipath resilience without hardware changes; versus Si4790x, it delivers faster time-to-market for automotive AM/FM-only systems with lower validation overhead and zero FPGA dependency.
Availability
TDA7786MTR is available at Aetrix Electronics and suitable for automotive infotainment systems, HD Radio™ hybrid receivers, and emergency weather band radios requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TDA7786MTR 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, specializing in automotive-grade analog, power, and microcontroller solutions with broad AEC-Q100 product coverage.
The TDA7786MTR belongs to ST's ELITE automotive tuner family, engineered specifically for high-fidelity, low-BOM car-radio platforms demanding integrated RF front-end, digital IF, and real-time multipath compensation.
FAQ
Is the TDA7786MTR pin-compatible with the TDA7786TR?
Yes - both share identical LQFP64 pinout, register map, I²C command set, and power sequencing. The only functional difference is activation of the MuSICA algorithm via a dedicated configuration bit (register 0x05, bit 7), making hardware replacement drop-in with firmware update.
Does the TDA7786MTR require an external crystal oscillator?
No - it integrates a full crystal oscillator circuit compatible with standard 32.768 kHz or 12.288 MHz crystals. Pin connections OSCIN/OSCOUT support direct crystal placement; no external load capacitors needed due to internal trimming.
What is the role of the SAI_BB interface pins?
SAI_BB (Serial Audio Interface – Baseband) provides parallel digital output of HD Radio™ IBOC baseband signals (FM/AM) to an external decoder. It operates at 2.048 MHz frame rate with 32-bit words, enabling lossless transfer of unprocessed I/Q samples for advanced demodulation.
Can the TDA7786MTR decode RDS and RBDS simultaneously?
Yes - its RDS demodulator supports both European RDS and North American RBDS standards via software-selectable mode. Group synchronization logic handles PI code rollover and AF list parsing compliant with EN 50067 and ANSI/EIA-608-B specifications.
TDA7786MTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Frequency:
- AM, FM, WB
- Sensitivity:
- -
- Data Rate (Max):
- -
- Modulation or Protocol:
- AM, FM, WB
- Applications:
- General Purpose
- Current - Receiving:
- 175mA
- Data Interface:
- I2C, I2S
- Memory Size:
- -
- Antenna Connector:
- PCB, Surface Mount
- Features:
- RDS Demodulator + Band Pass Filter
- Voltage - Supply:
- 4.7V ~ 5.2V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-LQFP (10x10)
TDA7786MTR FAQ
1.How can I place an order for TDA7786MTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA7786MTR 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 TDA7786MTR reliable?
The price and inventory of TDA7786MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7786MTR is usually 5 days.
3.What payment methods are accepted for TDA7786MTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7786MTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA7786MTR?
TDA7786MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA7786MTR 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 TDA7786MTR?
For technical support, including TDA7786MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7786MTR requirements.
6.How does Aetrix verify that TDA7786MTR is sourced from the original manufacturer or authorized distributors?
All TDA7786MTR 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 TDA7786MTR meets industry standards.
7.What is the process for return or replacement of TDA7786MTR?
All TDA7786MTR units undergo pre-shipment inspection (PSI). If there is an issue with TDA7786MTR, 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 TDA7786MTR part is unused and in its original packaging.
Return procedure for TDA7786MTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TDA7786MTR Tags
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MICRF220AYQS-TR
Microchip Technology
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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
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TESEO-LIV3R
STMicroelectronics
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M20048-1
Antenova
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CMX994EQ4
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