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FDA4100LVSTN/a11avai4x135W / 2x270W low voltage operation PWM digital input power amplifier with I2C diagnostics and step-up driver


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FDA4100LV
4x135W / 2x270W low voltage operation PWM digital input power amplifier with I2C diagnostics and step-up driver
September 2013 DocID025019 Rev 2 1/9
FDA4100LV

4 x 135 W / 2 x 270 W PWM digital input power amplifier
with I2 C diagnostics, step-up driver and low voltage operation
Data brief - production data
Features
Integrated 108 dB D/A conversionI2 S and TDM digital input (3.3/1.8 V) Input sampling frequency: 44.1kHz, 48 kHz, kHz, 192 kHz MOSFET power outputs Step-up driver included EMI control for FM/AM compatibility EMI compliance at the CEI EN 55025 (2009-
10) Dithering possibility Very low component count Output lowpass filter included in the feedback Low radiation function (LRF) High output power capability
–4 x 85 W/4  @ 25 V, 1 kHz, 10 % THD 2 x 150 W/2  @ 25 V, 1 kHz, 10 % THD Max. output power 4 x 135 W/4  @ 25 V, 1 kHz 2 x 270 W/2  @ 25 V, 1 kHz Full I2 C bus driving (3.3/1.8 V): Independent front/rear soft play/ mute2 C diagnostics (DC and AC load detection,
internal test signal generated) Very flexible fault detection though integrated
diagnostic Offset detector (play or mute mode) Four independent short circuit protection Clipping detector C-MOS compatible enable pin (3.3/5 V) ESD protection 6 V operation (“start - stop”)
Description

The FDA4100LV is a new BCD- SOI (silicon on
insulation) technology QUAD BRIDGE class D
amplifier, specially intended for car radio
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
to 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 is
including the output L-C low-pass filter, allowing
superior frequency response linearity and lower
distortion independently of the inductor and
capacitor quality.
FDA4100LV is fully configurable through I2 C bus
interface and integrates a full diagnostics array
specially intended for automotive applications
(with the status of each single speaker).
Thanks to the solutions implemented to solve the
EMI problems, the device is conceived to be used
in the standard single DIN car-radio box together
with the tuner.
The possibility to parallelize the outputs allows to
drive both 2  and 1  speakers.
A built-in step-up driver allows to provide high
output power even using the standard 14 V
supply voltage.
Moreover FDA4100LV is able to work down to 6V
supply, thus supporting the most recent low
voltage ('start-stop') car-makers specification.

Table 1. Device summary
Contents FDA4100LV
2/9 DocID025019 Rev 2
Contents Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DocID025019 Rev 2 3/9
FDA4100LV Block diagram
1 Block diagram
Figure 1. Block diagram
Pins description FDA4100LV
4/9 DocID025019 Rev 2
2 Pins description
Figure 2. Pins connection diagram (top view)

Table 2. Pins list description
DocID025019 Rev 2 5/9
FDA4100LV Pins description
Table 2. Pins list description (continued)
Pins description FDA4100LV
6/9 DocID025019 Rev 2
Table 2. Pins list description (continued)
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