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.
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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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Symbols
Footprints
3D models
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 |
(**) 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.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||
| HFA80A-F2T | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| HFA80A-F2Y | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
HFA80A-F2T Active
HFA80A-F2Y Active
(*) 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