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Si8241CB-B-IS1 Datasheet(PDF) 1 Page - Silicon Laboratories

No. de pieza Si8241CB-B-IS1
Descripción Electrónicos  CLASS D AUDIO DRIVER WITH PRECISION DEAD-TIME GENERATOR
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Fabricante Electrónico  SILABS [Silicon Laboratories]
Página de inicio  http://www.silabs.com
Logo SILABS - Silicon Laboratories

Si8241CB-B-IS1 Datasheet(HTML) 1 Page - Silicon Laboratories

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Rev. 0.2 2/11
Copyright © 2011 by Silicon Laboratories
Si824x
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Si824x
C LASS D A UDIO D RIVER WITH P RECISION D EAD-TIME G ENERATOR
Features
Applications
Description
The Si824x isolated driver family combines two isolated drivers in a single
package. The Si8241/44 are high-side/low-side drivers specifically targeted at
high-power (>30 W) audio applications. Versions with peak output currents of
0.5 A (Si8241) and 4.0 A (Si8244) are available. All drivers operate with a
maximum supply voltage of 24 V.
Based on Silicon Labs' proprietary isolation technology, the Si824x audio drivers
incorporate input-to-output and output-to-output isolation, which enables level-
translation of signals without additional external circuits as well as use of bipolar
supply voltage up to ±750 V. The Si824x audio drivers feature an integrated dead-
time generator that provides highly precise control for achieving optimal THD.
These products also have overlap protection that safeguards against shoot-
through current damage. The CMOS-based design also provides robust immunity
from latch-up and high-voltage transients. The extremely low propagation delays
enable faster modulation frequencies for an enhanced audio experience. The TTL
level compatible inputs with >400 mV hysteresis are available in PWM input
configuration; other options include UVLO levels of 8 V or 10 V. These products
are available in narrow body SOIC packages.
Functional Block Diagram
0.5 A peak output (Si8241)
4.0 A peak output (Si8244)
PWM input
High-precision linear programmable
dead-time generator

0.4ns to 1µs
High latchup immunity >100 V/ns
Up to 1500 Vrms output-output
isolation, supply voltage of ±750 V
Input to output isolation for low noise
(up to 2500 V)
Up to 8 MHz operation
Wide operating range

–40 to +125 °C
Transient immunity >45 kV/µs
RoHS-compliant

SOIC-16 narrow body
Class D audio amplifiers
GNDI
VDDI
PWM
VDDA
VOA
GNDA
VOB
VDDB
GNDB
DISABLE
DT
UVLO
Programmable Dead
Time, Control Gating
Si8241/44
Patents Pending
Ordering Information:
See page 25.
Pin Assignments
PWM
NC
VDDI
GNDI
DISABLE
DT
NC
VDDI
VDDA
VOA
GNDA
NC
VDDB
VOB
GNDB
Si8241/44
SOIC-16 (Narrow)
1
2
3
4
5
6
7
8
9
12
11
10
13
14
15
16
NC


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