Datasheet

H-BRIDGE
OSCILLATOR
IN+
IN-
SS/FF
LS+
LS-
C
IN
C
IN
MODULATOR
MODULATOR
OSCILLATOR
VGO+
VGO-
SD_AMP
SD_BOOST
SOFTSTART
FB_SEL
FB_GND1
FB_GND0
FB
REGGND
SW
V
DD
V1
PV1
LSGNDGND
C
SS
0.1 PF
R5
20 k:
R7
20 k:
R6
20 k:
R8
20 k:
R3
25.5 k:
R4
2.5 k:
R2
9.31 k:
R1
4.87 k:
C3
1 PF
C4
1 PF
C2
100 PF
C1
280 pF
D1
L1
6.8 PH
+3.0V to +5.5V
CS1
10 PF
VIN
+
VIN-
30.0 1000.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
AMPLITUDE (dBPV/m)
FREQUENCY (MHz)
100.0 200.0 300.0 400.0 500.0 600.0 700.0 800.0 900.0
FCC Class B Limit
LM45811 EMI Spectrum
LM48511
SNAS416G –JULY 2007–REVISED MAY 2013 www.ti.com
EMI Graph
Figure 1. LM48511 RF Emissions — 3 inch cable
Typical Application
Figure 2. Typical LM48511 Audio Amplifier Application Circuit
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Product Folder Links: LM48511