HFDA801A-VYY

HFDA801A-VYY

HFDA801A-VYT

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4x80W digital input class-D automotive audio amplifier with Hi-Fi audio quality, advanced diagnostics, 2MHz switching frequency and High Resolution Bandwidth

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Parameter NameParameter Value
Supply Voltage Min Volt4.5
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius105.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack2
GradeAutomotive
Package NameLQFP

HFDA801A is the new ST class-D audio amplifier, specifically designed for automotive applications in the latest BCD technology. The HFDA801A integrates a 24-bits 120 dB DAC conversion, and features 2 MHz switching PWM class D output stage. This configuration enables the design of a compact and inexpensive application, reaching at the same time outstanding level of audio performances. HFDA801A supports wide band applications (80 kHz), with extremely low level of noise and low THD. Moreover it features the most complete diagnostic matrix, including full diagnostic in play to support the most demanding OEM requirements in terms of speaker control and system robustness/ reliability. HFDA801A supports start stop cranking down to 4.5 V (5 V at turn on) and it is housed in a very compact and thin LQFP 10x10 package. Thus the HFDA801A is suitable for any level of automotive application.

Key features
  • AEC-Q100 qualification on going
  • Integrated 120 dB D/A conversion
  • I2S and TDM digital input (up to 16 CH TDM)
  • Selectable input sample rate frequency (44.1/48/96/192 kHz)
  • Wide supply operating range: 4.5 V - 2518 V (5 V min at turn-on transition)
  • PWM 2 MHz switching PWM:
    • Reduced size and cost of output LC
  • High Resolution Bandwidth support:
    • Up to 40 kHz (I2S 96 kHz) with attenuation [0 dB, -2 dB]
    • Up to 80 kHz (I2S 192 kHz) with attenuation [0 dB, -2 dB]
  • 4 I2C addresses
  • 4 Ω, 2 Ω, 1 Ω driving with output channels parallelization
  • MOSFET power outputs allowing high output power capability:
    • Typ 4 x 30 W /4 Ω @ 14.4 V, 1 kHz THD = 10%
    • Typ 4 x 25 W /4 Ω @ 14.4 V, 1 kHz THD = 1%
    • Typ 4 x 50 W/2 Ω @ 14.4 V 1 kHz THD =10 %
    • Typ 4 x 80 W/4 Ω @ 25V V, 1 kHz THD =10 %
  • I2C full configurability and diagnostic:
    • 4 x Thermal warning and average junction temperature measurement on I2C (8 bits)
    • AC and DC diagnostic (independent of channel)
    • OCP protection scheme configurable (4 x OCP limit selectable)
    • Mute time configuration
    • DIM (digital impedance meter)
    • Feedback after filter configuration
  • Capability to run complete diagnostic in play:
    • Short to GND/VCC
    • DC offset detector
  • Extremely Low noise:
    • 13 µV A-weighted; 20 kHz (high gain) typ
  • Very low THD:
    • 0.02% at 1 W 1 kHz on 4 and 2 Ω loads typ
    • 0.08% 20-20 kHz (full audio band) on 4 and 2 Ω loads (1 W)
  • CD/Diag pin (3 selectable CD thresholds)
  • Synchronization output pin (only with TDM input stream, on I2Sdata2)
  • Channel independent Mute/Play/Gain selection/Diagnostic
  • Real Time current monitor
  • Open Load in play
  • Batt