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STMicroelectronics FDA802-VYT
- Part No.:
- FDA802-VYT
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Amplifiers
- Package:
- 64-LQFP Exposed Pad
- Datasheet:
-
FDA802-VYT.pdf
- Description:
- 2X150 W - 1X300 W CLASS-D DIGITA
- Quantity:
- Payment:
- Shipping:
Inventory:2,791
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Product details
Overview
FDA802-VYT 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), and full I²C diagnostics. It delivers 2×150 W into 4 Ω @ 35 V (THD = 10%) and supports 2 Ω loads up to 18 V, operating across 5.5–50 V supply range for start-stop and boosted rail applications.
For engineers reviewing the FDA802-VYT datasheet, FDA802-VYT pinout, FDA802-VYT application, or FDA802-VYT equivalent, key selection criteria include its AEC-Q100 qualification, integrated low-pass filter in feedback path, MOSFET output stage architecture, and multi-level diagnostics (short-to-rail, AC/DC load, clipping, offset detection) for automotive infotainment systems.
Technical Context
The FDA802 implements a dual-channel Class D topology with independent half-bridge outputs per channel, each featuring dedicated feedback paths that include the external output LC filter-enabling distortion reduction independent of passive component tolerance. Its BCD process integrates high-voltage MOSFETs capable of 50 V operation and internal charge pumps for gate drive.
Digital interface support includes configurable I²S/TDM (3.3/1.8 V logic) with frame sync, bit clock, and dual data lanes, plus full I²C control (8 address options) enabling real-time diagnostics and configuration without host processor intervention. EMI compliance follows IEC61967-4 and IEC62132-4, with Low Radiation Function (LRF) and FM/AM compatibility verified.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power | 2×150 W /4 Ω @ 35 V (THD = 10%); enables high-fidelity rear/surround channels in DIN head units |
| Supply Range | 5.5 V–50 V; supports 12 V battery, 48 V mild-hybrid, and boost-converter rails |
| D/A Resolution | 110 dB SNR & dynamic range; eliminates need for external DAC in cost-sensitive designs |
| Digital Input | I²S/TDM with 44.1/48/96/192 kHz sampling; compatible with modern SoC audio processors |
| Diagnostics | I²C-accessible short-to-Vcc/GND (≤1 kΩ), AC/DC load, clipping, and offset detection |
| EMI Control | LRF mode + layout-optimized switching; passes FM/AM band immunity per IEC61967-4 |
| Package | LQFP64 exposed pad (10×10×1.4 mm); thermal slug enables >200 W dissipation with PCB copper pour |
Pinout & Package
Package: LQFP64 with exposed thermal pad (10×10×1.4 mm, JEDEC MO-220 variant), lead-free and RoHS-compliant per ECOPACK® specifications.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| FB1+/FB1−, FB2+/FB2− | Channel 1 & 2 feedback inputs | Close-loop sensing point after output LC filter; enables linearity correction regardless of inductor/capacitor variance |
| OUT1±, OUT2± | Half-bridge output terminals | Direct connection to speaker load; rated for 2 Ω continuous at ≤18 V, 4–8 Ω at higher voltages |
| VCC1±, VCC2± | Boosted power supply rails | Accept up to 50 V; decoupled via external capacitors to sustain peak current during bass transients |
| SAI Rx/Tx, SAI Bit clk, SAI fs | Digital audio interface | Supports TDM-8 or stereo I²S; allows daisy-chaining multiple FDA802s on single SAI bus |
| I2C-Data, I2CClk | I²C control interface | 3.3/1.8 V tolerant; 8 selectable addresses enable multi-amplifier configurations without bus contention |
| CD/Diag | Clipping detector & diagnostic status | Open-drain output pulses on clipping or fault; reduces MCU polling overhead in safety-critical systems |
Key Features
| Feature | Design Value |
|---|---|
| Integrated D/A converter | 110 dB SNR eliminates external DAC, reducing BOM count and PCB area in compact head units |
| Feedback including LC filter | Distortion compensation remains effective even with low-cost inductors and capacitors |
| Multi-level diagnostics | Soft short detection down to 1 kΩ enables early failure prediction before catastrophic open/short events |
| Low quiescent current | <5 mA in standby supports ISO 8820-compliant sleep modes for <100 µA system leakage |
| Legacy mode (no I²C) | Hardware-only operation via EN pins permits use in legacy designs lacking I²C infrastructure |
Applications
| Automotive Head Unit | Start-Stop Audio System |
|---|---|
Use Scenario: Compact DIN-size infotainment unit requiring 4-channel amplification with tuner co-location. IC Role / Device Role / Timing Role: Dual-bridge Class D amplifier with integrated DAC and diagnostics; replaces discrete DAC + analog amp + protection IC stack. Use Value: EMI-optimized layout allows placement within 20 mm of AM/FM tuner without shielding, reducing mechanical complexity. | Use Scenario: OEM audio system supporting engine-off cabin audio with 5.5–8 V battery operation. IC Role / Device Role / Timing Role: High-efficiency Class D amplifier with ultra-low quiescent current and wide VIN range. Use Value: Delivers 22 W/channel into 4 Ω at 14 V (1% THD) and maintains regulation down to 5.5 V, meeting OEM start-stop voltage profiles. |
| Multi-Zone Cabin Audio | Aftermarket DSP Integration |
Use Scenario: Front/rear zone separation using two FDA802s sharing one SAI bus in TDM-8 mode. IC Role / Device Role / Timing Role: Digitally controlled amplifier with independent channel enable and mute; synchronized via shared SAI fs. Use Value: Eliminates need for external clock distribution; TDM-8 allows 8-channel audio over 4-pin interface (clk/fs/data1/data2). | Use Scenario: DSP-based aftermarket amplifier with real-time diagnostics and firmware-updatable settings. IC Role / Device Role / Timing Role: I²C-configurable Class D output stage with register-accessible fault logs and clipping history. Use Value: Enables over-the-air updates of gain, EQ, and protection thresholds without hardware change. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Class D automotive amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS5756M from Texas Instruments | Single-channel, 150 W max; no integrated DAC; requires external I²S-to-analog conversion | Lacks built-in diagnostics and EMI-optimized layout; needs additional filtering for FM band compliance | Preferred when system already includes high-performance external DAC and board space allows added filtering components |
| MAX9768B from Maxim Integrated | 2×100 W /4 Ω @ 14 V; no TDM support; only I²S with fixed 48 kHz sampling | No soft-short detection; limited to 14 V operation; lacks low-radiation function for tuner proximity | Suitable for entry-level 12 V-only systems where diagnostics and EMI are secondary to cost |
Compared with TAS5756M and MAX9768B, FDA802-VYT uniquely combines dual-channel 150 W output, integrated 110 dB DAC, AEC-Q100 diagnostics, and EMI-hardened design-making it optimal for premium DIN head units requiring tuner co-location and start-stop compatibility.
Availability
FDA802-VYT is available at Aetrix Electronics and suitable for automotive infotainment systems, start-stop audio modules, and multi-zone cabin amplifiers requiring stable component supply, AEC-Q100 qualification, and production-ready EMI compliance.
Supply support for FDA802-VYT 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, specializing in automotive, industrial, and power management solutions with vertical manufacturing and AEC-Q100-aligned quality systems.
FDA802 belongs to ST's automotive Class D amplifier product line, engineered specifically for space-constrained car radios needing high efficiency, integrated diagnostics, and tuner-compatible EMI performance without external shielding.
FAQ
What is the maximum safe operating voltage for FDA802-VYT?
The FDA802-VYT supports a continuous supply range of 5.5 V to 50 V. Absolute maximum ratings specify 55 V transient tolerance for ≤100 ms per IEC 60664-1. Operation above 50 V risks permanent damage to internal MOSFETs and charge pump circuitry, and is not validated under AEC-Q100 stress conditions.
Does FDA802-VYT require external LC filters for EMC compliance?
No external LC filter is required for basic EMC compliance-the device's feedback loop includes the output LC filter, and EMI performance has been validated per IEC61967-4 and IEC62132-4 with standard 10 µH/100 nF output filters. However, FM-band immunity in tight tuner proximity may require optimized PCB layout and ferrite bead placement per ST Application Note AN4922.
Can FDA802-VYT drive 2 Ω speakers continuously?
Yes-FDA802-VYT supports continuous 2 Ω operation up to 18 V supply, delivering 2×46 W @ 14 V (10% THD). At higher voltages (>18 V), 2 Ω loads are limited to short-duration peaks due to thermal constraints; sustained operation requires ≥4 Ω loading or active thermal derating via I²C-monitored die temperature.
How does the "Legacy Mode" function without I²C?
In Legacy Mode, FDA802-VYT disables I²C functionality and operates using hardwired enable/mute pins (Enable1–Enable4, HWMute). All diagnostics and configuration defaults to factory-set values-e.g., fixed gain, default sampling rate (48 kHz), and basic fault reporting via CD/Diag pin-allowing integration into legacy designs lacking I²C infrastructure.
FDA802-VYT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 64-LQFP Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-VYT FAQ
1.How can I place an order for FDA802-VYT through Aetrix?
Please submit a Request for Quotation (RFQ) for FDA802-VYT 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-VYT reliable?
The price and inventory of FDA802-VYT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FDA802-VYT is usually 5 days.
3.What payment methods are accepted for FDA802-VYT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FDA802-VYT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FDA802-VYT?
FDA802-VYT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FDA802-VYT 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-VYT?
For technical support, including FDA802-VYT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FDA802-VYT requirements.
6.How does Aetrix verify that FDA802-VYT is sourced from the original manufacturer or authorized distributors?
All FDA802-VYT 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-VYT meets industry standards.
7.What is the process for return or replacement of FDA802-VYT?
All FDA802-VYT units undergo pre-shipment inspection (PSI). If there is an issue with FDA802-VYT, 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-VYT part is unused and in its original packaging.
Return procedure for FDA802-VYT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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