FDA801 Datasheet, PDF (1/11 Pages) STMicroelectronics – EMI control for AM compatibility

FDA801
4 x 50 W class-D digital input power amplifier with I²C diagnostics
and low voltage operation
Data brief
 ESD protection
 6 V operation (“Start - Stop” engines
compatibility)
 2 and 1 Ω load driving capability
*$*36
LQFP64 (exposed pad up)
Features
 Integrated 110 dB D/A conversion
 I²S and TDM digital input (3.3/1.8 V)
 Input sampling frequency: 44.1 kHz, 48 kHz,
96 kHz, 192 kHz
 Class-D channels with 93% efficiency
 EMI control for AM compatibility
 EMI compliance evaluated following normative
IEC61967-4 and IEC62132-4
 Low radiation function (LRF)
 Idle tones free DAC
 Output lowpass filter included in the feedback
allowing lower cost filter components
 Max. output power
– 4 x 50 W/4 Ω @ 15.2 V, 1 kHz
 High output power capability
– 28 W/4 Ω 10 % THD, Vd = 14.4 V
 Full I²C bus driving (3.3/1.8 V):
– Channels independent tristate
– Channel independent soft play/mute
– I²C bus diagnostics, including DC and AC
load detection
 Integrated fault protection
 Input and output offset detector
 Clipping detector
Description
FDA801 is a new BCD technology quad BRIDGE
class D amplifier, specially intended for
automotive applications.
Thanks to the technology used, it is possible to
integrate a high performance D/A converter
together with powerful MOSFET outputs in
class D, to get an outstanding efficiency
compared with the standard class AB.
The integrated D/A converter allows to reach
outstanding performances (110 dB S/N ratio with
108 dB of dynamic range). The feedback loop
includes the output L-C low-pass filter, allowing
superior frequency response linearity and lower
distortion independently from the inductor and
capacitor quality.
FDA801 is fully configurable through I²C bus
interface and integrates a full diagnostics array
specially intended for automotive applications.
Thanks to the solutions implemented to contain
EMI emissions, the device is intended to be used
in the standard single DIN car-radio box together
with the tuner.
Moreover FDA801 is able to work with power
supply as low as 6 V, thus supporting the most
recent low voltage ('start-stop') car-makers
specification.
Table 1. Device summary
Order code
Package
Packing
FDA801-VYY LQFP64 (exp. pad up) Tray
FDA801-VYT LQFP64 (exp. pad up) Tape & Reel
November 2015
DocID028631 Rev 1
For further information contact your local STMicroelectronics sales office.
1/11
www.st.com