HFA80A

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4 channel analog input class-D automotive audio amplifier with Hi-Fi audio quality, advanced diagnostics and 2MHz switching frequency

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Product overview

Description

The HFA80A is a new STMicroelectronics class-D audio amplifier, specifically designed for automotive applications in BCD9s technology.

The HFA80A integrates advanced solutions for an excellent radiated noise immunity combined with the advantages of 2 MHz switching PWM class-D output stages. This configuration allows outstanding audio performances while designing a compact and inexpensive application.

The HFA80A supports wide band applications with extremely low level of noise and low THD. Moreover, it features a broad diagnostics matrix able to support the most demanding OEM requirements in terms of speaker control and system robustness/reliability. The HFA80A supports start/stop cranking down to 4.5 V and is housed in a very compact and thin LQFP 7x7 package, making it suitable for any level of automotive application.

  • All features

    • AEC-Q100 qualified
    • Supply operating range: 4.5 V - 18 V
    • EMI compliant to CISPR25 level V
    • Class-D BTL outputs
    • Battery load dump compatible (40 V)
    • Reduced size and cost of output LC thanks to 2 MHz switching PWM
    • Extended audio band support
    • Multiple load configurations:
      • Able to drive 4 Ω and 2 Ω speaker loads
      • Both speaker and line driver options
    • MOSFET power outputs allowing high output power capability:
      • Typ 4 x 28.5 W/4 Ω at 14.4 V, 1 kHz, THD = 10%
      • Typ 4 x 23 W/4 Ω at 14.4 V, 1 kHz, THD = 1%
      • Typ 4 x 49 W/2 Ω at 14.4 V, 1 kHz, THD = 10%
      • Typ 4 x 39 W/2 Ω at 14.4 V, 1 kHz, THD = 1%
    • Audio performances at 4 Ω, 14.4 V, 1 kHz:
      • THD 0.015% typ at 1 W, 1 kHz on 4 Ω loads
      • Output noise 52 typ μV at 26 dB gain
      • Crosstalk 86 dB typ at 1 W, 1 kHz on 4 Ω loads
      • PSRR 80 dB typ at 1 W, 1 kHz on 4 Ω loads
    • Fast turn-on and very low latency for high-speed audio processing applications
    • I2C full configurability with channel independent mute/play/gain selection/diagnostic
    • 4 I2C addresses
    • I2C bus driving: fast I2C (1Mhz clock) option
    • Output PWM clock spread spectrum
    • Full diagnostic matrix with info available both on I2C and CD/DIAG pin:
      • Independent by-channel DC and AC load detection diagnostic with selectable threshold
      • Startup diagnostic for shorts to VCC/GND
      • Overcurrent protection with configurable threshold (2 selectable)
      • Input voltage DC offset detector
      • Free-running output current offset detector
    • Thermal protection and thermal warning (4 thermal warnings)
    • DAM (digital admittance meter)
    • Synchronization input/output pin
    • Immune to pop/tick noise at turn on/off, battery variations, during diagnostic
    • Legacy (backup mode without I2C control)
    • ESD integrated protections (2 kV HBM, 500 V/750 V corner CDM)
    • LQFP48L exposed pad up package

EDA Symbols, Footprints and 3D Models

STMicroelectronics - HFA80A

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
HFA80A-F2T
Active
LQFP 7X7 48L EXPOSED PAD UP Automotive Ecopack2
HFA80A-F2Y
Active
LQFP 7X7 48L EXPOSED PAD UP Automotive Ecopack2

HFA80A-F2T

Package:

LQFP 7X7 48L EXPOSED PAD UP

Material Declaration**:

Marketing Status

Active

Package

LQFP 7X7 48L EXPOSED PAD UP

Grade

Automotive

RoHS Compliance Grade

Ecopack2

HFA80A-F2Y

Package:

LQFP 7X7 48L EXPOSED PAD UP

Material Declaration**:

Marketing Status

Active

Package

LQFP 7X7 48L EXPOSED PAD UP

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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HFA80A-F2T

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HFA80A-F2Y Active

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HFA80A-F2Y

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors