MP1720 – 2.7W LOW EMI HIGH EFFICIENCY MONO CLASS-D AUDIO AMPLIFIER
OPERATION CHARACTERISTICS
TEST SET-UP GRAPH, VIN = PVIN = SHDN =3.3V, DGND = PGND = 0V, CLK = DGND
(f
CLK
=1.0MHz), R
Load
= 4Ω, Gain=12dB, T
A
= +25
C, unless otherwise noted
(6)
.
Parameter
Symbol
Conditions
THD+N=1%,
R
Load
=4Ω
THD+N=10%,
R
Load
=4Ω
THD+N=1%,
R
Load
=8Ω
THD+N=10%,
R
Load
=8Ω
Total Distortion Pulse
Noise
Supply Ripple
Rejection Ratio
(7)
Signal to Noise Ratio
Output Noise
Common Mode
Rejection Ratio
(8)
THD+N
K
SVR
SNR
V
n
CMRR
P
OUT
=2W,
P
OUT
=0.8W
P
OUT
=0.4W
f
S
=217Hz,
V
Ripple
=300mV
PP
,
input AC-ground
V
OUT
=2 V
RMS
A-weighted
V
IN
=3.3V, f
s
=20Hz
to 20kHz, input AC-
grounded
Vic
RIPPLE
=300mV
PP
,
f
s
=1kHz
V
IN
=5.0V
V
IN
=3.3V
V
IN
=2.5V
V
IN
=5.0V
V
IN
=3.3V
V
IN
=2.5V
V
IN
=5.0V
V
IN
=3.3V
V
IN
=2.5V
V
IN
=5.0V
V
IN
=3.3V
V
IN
=2.5V
V
IN
=5.0V
V
IN
=3.3V
V
IN
=2.5V
V
IN
=3.3V
V
IN
=3.3V
No weighting
A weighting
V
IN
=3.3V
Min
Typ
2.14
0.87
0.48
2.78
1.18
0.64
1.19
0.55
0.31
1.56
0.71
0.40
0.15%
0.13%
0.13%
-60
91.3
72
53
-62
Max
Unit
W
Output Power
P
OUT
W
dB
dB
μV
RMS
dB
MP1720 Rev. 1.01
8/9/2012
www.MonolithicPower.com
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© 2012 MPS. All Rights Reserved.
4
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