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
(fCLK=1.0MHz), RLoad = 4Ω, Gain=12dB, TA = +25C, unless otherwise noted (6).
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
VIN =5.0V
VIN =3.3V
VIN =2.5V
VIN =5.0V
VIN =3.3V
VIN =2.5V
VIN =5.0V
VIN =3.3V
VIN =2.5V
VIN =5.0V
VIN =3.3V
VIN =2.5V
VIN =5.0V
VIN=3.3V
VIN=2.5V
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%
THD+N=1%,
RLoad=4ꢀ
W
THD+N=10%,
R
Load=4ꢀ
Output Power
POUT
THD+N=1%,
Load=8ꢀ
R
W
THD+N=10%,
RLoad=8ꢀ
POUT=2W,
POUT=0.8W
Total Distortion Pulse
Noise
THD+N
POUT=0.4W
fS=217Hz,
Supply Ripple
KSVR
SNR
Vn
VRipple=300mVPP,
input AC-ground
VOUT=2 VRMS
VIN=3.3V
VIN=3.3V
-60
dB
dB
Rejection Ratio(7)
Signal to Noise Ratio
Output Noise
91.3
A-weighted
VIN=3.3V, fs=20Hz
to 20kHz, input AC-
grounded
No weighting
A weighting
VIN=3.3V
72
53
μVRMS
dB
Common Mode
VicRIPPLE=300mVPP,
fs=1kHz
CMRR
-62
Rejection Ratio(8)
MP1720 Rev. 1.01
8/9/2012
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