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STMicroelectronics FDA802-VYY
- Part No.:
- FDA802-VYY
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Amplifiers
- Package:
- 64-LQFP Exposed Pad
- Datasheet:
-
FDA802-VYY.pdf
- Description:
- 2X150 W - 1X300 W CLASS-D DIGITA
- Quantity:
- Payment:
- Shipping:
Inventory:4,973
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Product details
Overview
FDA802-VYY from STMicroelectronics is a dual-bridge Class D automotive audio power amplifier with integrated 110 dB D/A conversion, I²S/TDM digital input (44.1–192 kHz sampling), and comprehensive diagnostics. It delivers 2×150 W into 4 Ω @ 35 V (THD = 10%) and operates across 5.5–50 V supply, supporting start-stop battery systems and FM/AM EMI compliance per IEC61967-4/IEC62132-4.
For engineers reviewing the FDA802-VYY datasheet, FDA802-VYY pinout, FDA802-VYY application, or FDA802-VYY equivalent, key selection considerations include its AEC-Q100 qualification, independent channel operation, low-quiescent-current diagnostics (short-to-rail, AC/DC load, clipping), and LQFP64 exposed-pad package with integrated charge pump for high-voltage MOSFET gate drive.
Technical Context
The FDA802-VYY implements a feedback loop that includes the external output LC low-pass filter-enabling superior frequency response linearity and reduced distortion regardless of passive component tolerance. Its BCD process integrates high-voltage MOSFET outputs and an on-chip 110 dB SNR interpolator + noise shaper, enabling full-scale analog performance without external DACs.
Diagnostics are executed via I²C interface with eight configurable addresses and include soft-short detection down to 1 kΩ, internally/externally generated tone-based AC load testing, and real-time offset/clipping monitoring. Legacy mode allows operation without I²C control, while EMI suppression features (LRF, optimized switching) ensure co-location with AM/FM tuners in single-DIN head units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power | 2 × 150 W / 4 Ω @ 35 V (THD = 10%); supports 2 Ω loads up to 18 V |
| Supply Range | 5.5 V–50 V; enables compatibility with 12 V battery and boosted 48 V rail systems |
| D/A Performance | 110 dB SNR and dynamic range; eliminates need for external high-resolution DAC |
| Digital Interface | I²S/TDM with 44.1/48/96/192 kHz sampling; 3.3 V/1.8 V logic compatible |
| Diagnostics | I²C-accessible short-to-VCC/GND, DC/AC load, clipping, and offset detection |
| EMI Compliance | Validated per IEC61967-4 (radiated) and IEC62132-4 (conducted); includes Low Radiation Function |
| Qualification | AEC-Q100 Rev G qualified for automotive underhood and cabin environments |
Pinout & Package
Package: LQFP64 (10 mm × 10 mm × 1.4 mm, exposed thermal pad up). The exposed pad must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| FB1+/FB1−, FB2+/FB2− | Channel 1 & 2 feedback inputs | Close loop around external LC filter for distortion reduction and stability |
| OUT1±, OUT2± | Half-bridge output terminals | Direct connection to speaker loads; supports 2–8 Ω with current limiting |
| VCC1±, VCC2± | Boosted power supply rails | Enable >35 V operation for high-power output; require local decoupling |
| I2C-Data / I2C-Clk | I²C bus interface | Configures device, reads diagnostics, and selects one of eight I²C addresses |
| SAI Rx/Tx/BitClk/fs | Serial Audio Interface | Supports TDM up to 32 slots and I²S stereo; synchronous with internal clock generator |
| CD/Diag | Clipping detector / diagnostic status | Open-drain flag indicating active fault or clipping event |
| TAB | Thermal slug | Must be connected to PCB ground plane for thermal dissipation and EMI shielding |
Key Features
| Feature | Design Value |
|---|---|
| Integrated D/A converter | 110 dB SNR enables CD-quality audio without external DAC, reducing BOM count and layout area |
| Feedback-inclusive LC filter | Eliminates sensitivity to inductor/capacitor tolerance, ensuring consistent THD+N across production units |
| Low radiation function (LRF) | Reduces radiated emissions by >10 dB in 30–200 MHz band, enabling tuner co-location without shielding |
| Start-stop voltage support | Operates down to 5.5 V, meeting OEM requirements for engine cranking and regenerative braking scenarios |
| Independent channel enable | Four dedicated Enable pins (EN1–EN4) allow per-channel power gating for multi-zone audio zoning |
Applications
| Automotive Head Unit | Multi-Zone Infotainment System |
|---|---|
Use Scenario: Integrated amplifier in single-DIN car radio housing alongside AM/FM tuner and DSP. IC Role / Device Role / Timing Role: Dual-channel Class D power stage with embedded diagnostics and EMI-hardened digital interface. Use Value: Eliminates external DAC and reduces heatsink size by 40% vs. Class AB; meets CISPR 25 Level 5 without ferrite beads. | Use Scenario: Front/rear zone amplification in premium vehicle infotainment with independent volume control. IC Role / Device Role / Timing Role: Two independent 150 W channels driven by time-sliced TDM audio streams. Use Value: Enables zone-specific mute, EQ, and fault reporting via shared I²C bus without additional controllers. |
| Start-Stop Compatible Audio Module | Aftermarket DSP Amplifier |
Use Scenario: Compact amplifier module for EVs and mild-hybrid vehicles with 6–16 V battery transients. IC Role / Device Role / Timing Role: High-efficiency power stage with brown-out protection and ultra-low quiescent current (<5 mA). Use Value: Maintains audio playback during 5.5 V cranking dips; reduces standby power by 65% vs. legacy solutions. | Use Scenario: High-fidelity aftermarket amplifier with digital input, diagnostics, and thermal monitoring. IC Role / Device Role / Timing Role: Drop-in replacement for analog-input amps, accepting I²S from external DSP or Bluetooth receiver. Use Value: Adds real-time clipping detection and short-circuit logging-features absent in most analog-input competitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel Class D automotive amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS5756M from Texas Instruments | Single-chip solution with integrated DSP and 96 kHz max sampling; no boost supply support (max 26 V) | Lacks independent boost rails and 50 V capability; limited to mid-power 4 Ω loads | Select when DSP programmability and smaller footprint outweigh peak power and voltage flexibility needs |
| MAX9768B from Maxim Integrated | Class D with analog/digital inputs; 108 dB SNR; no integrated diagnostics or AEC-Q100 qualification | Requires external fault monitoring circuitry; not certified for automotive underhood use | Select for cost-sensitive non-automotive industrial audio where qualification is not required |
Compared with TAS5756M and MAX9768B, the FDA802-VYY uniquely combines AEC-Q100 qualification, 50 V boost capability, and production-ready diagnostics-making it the only option qualified for high-power, safety-critical automotive head unit deployment without external supervision circuitry.
Availability
FDA802-VYY is available at Aetrix Electronics and suitable for automotive head units, start-stop compatible audio modules, multi-zone infotainment systems, and aftermarket DSP amplifiers requiring stable component supply and long-term automotive lifecycle support.
Supply support for FDA802-VYY 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 ICs, sensors, and automotive-grade analog devices since 1987.
The FDA802 belongs to ST's automotive audio power amplifier product line, engineered specifically for high-efficiency, high-reliability car radio and infotainment systems requiring AEC-Q100 compliance, EMI robustness, and integrated diagnostics.
FAQ
What is the maximum continuous output power per channel into 4 Ω at 14 V battery supply?
At 14 V supply, FDA802-VYY delivers 2 × 22 W into 4 Ω at 1% THD and 2 × 28 W at 10% THD. This is measured under standard automotive battery conditions with proper thermal management and recommended external LC filter design per ST Application Note AN4722.
Does FDA802-VYY require external bootstrap capacitors for high-side MOSFET drive?
No. FDA802-VYY integrates a dual charge pump (CPump1/CPump2) generating boosted gate drive voltage internally. External components are limited to the VddCP decoupling capacitor and SVR ripple rejection capacitor-no discrete bootstrap network is needed.
Can FDA802-VYY operate without I²C configuration in a basic audio system?
Yes. FDA802-VYY supports Legacy Mode ('no I²C' mode) where default settings apply: fixed gain, diagnostics disabled, and all channels enabled. Hardware pins (Enable1–Enable4, HWMute) retain full control, allowing functional operation without firmware initialization.
How is thermal performance managed given the LQFP64 exposed pad package?
The LQFP64 package features an exposed thermal pad (TAB pin #49) that must be soldered to a minimum 200 mm² copper pour connected to PCB ground. ST recommends ≥4 thermal vias (0.3 mm diameter) under the pad to achieve ≤3.5 °C/W junction-to-board thermal resistance per AN4722 guidelines.
FDA802-VYY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 64-LQFP Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Class D
- Output Type:
- 1-Channel (Mono) or 2-Channel (Stereo)
- Max Output Power x Channels @ Load:
- 300W x 1 @ 8Ohm; 150W x 2 @ 4Ohm
- Voltage - Supply:
- 6V ~ 18V
- Features:
- -
- Mounting Type:
- Surface Mount
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 64-LQFP-EP (10x10)
FDA802-VYY FAQ
1.How can I place an order for FDA802-VYY through Aetrix?
Please submit a Request for Quotation (RFQ) for FDA802-VYY 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 FDA802-VYY reliable?
The price and inventory of FDA802-VYY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FDA802-VYY is usually 5 days.
3.What payment methods are accepted for FDA802-VYY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FDA802-VYY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FDA802-VYY?
FDA802-VYY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FDA802-VYY 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 FDA802-VYY?
For technical support, including FDA802-VYY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FDA802-VYY requirements.
6.How does Aetrix verify that FDA802-VYY is sourced from the original manufacturer or authorized distributors?
All FDA802-VYY 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 FDA802-VYY meets industry standards.
7.What is the process for return or replacement of FDA802-VYY?
All FDA802-VYY units undergo pre-shipment inspection (PSI). If there is an issue with FDA802-VYY, 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 FDA802-VYY part is unused and in its original packaging.
Return procedure for FDA802-VYY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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