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MP1740EC-LF-P

P1-P3P4-P6P7-P9P10-P11
MPS CONFIDENTIAL
DO NOT DISTRIBUTE
MP1740 –3W HIGH EFFCIENCY MONO CLASS-D AUDIO AMPLIFIER
MPS CONFIDENTIAL AND PROPRIETARY INFORMATION – INTERNAL USE ONLY
MP1740MP1740 Rev. 1.0 4
1/5/2012
OPERATION CHARACTERISTICS
VCC=AVCC=PVCC=EN, AGND = PGND = 0V, signal frequency fs=1kHz, R
I
=150 Ω, Gain=2 V/V,
C
I
=2.2uF, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Conditions Min Typ Max Unit
VCC=5.5V 2.82
VCC=5V 2.32
VCC=3.6V 1.16
THD+N=1%,
f
S
=1kHz,
R
L
=4
VCC=2.5V 0.54
VCC=5.5V 3.62
VCC=5V 3.0
VCC=3.6V 1.51
THD+N=10%,
f
S
=1kHz,
R
L
=4
VCC=2.5V 0.70
VCC=5.5V 1.65
VCC=5V 1.36
VCC=3.6V 0.71
THD+N=1%,
f
S
=1kHz,
R
L
=8
VCC=2.5V 0.33
VCC=5.5V 2.12
VCC=5V 1.74
VCC=3.6V 0.91
Output Power P
OUT
THD+N=10%,
f
S
=1kHz,
R
L
=8
VCC=2.5V 0.42
W
P
OUT
=2W, f
S
=1kHz,
R
L
=4
VCC=5V 0.19%
P
OUT
=1W, f
S
=1kHz,
R
L
=4
VCC=3.6V 0.14%
P
OUT
=0.4W, f
S
=1kHz,
R
L
=4
VCC=2.5V 0.11%
P
OUT
=1W, f
S
=1kHz,
R
L
=8
VCC=5V 0.11%
P
OUT
=0.5W, f
S
=1kHz,
R
L
=8
VCC=3.6V 0.12%
Total Distorsion Plus
Noise
THD+N
P
OUT
=0.2W, f
S
=1kHz,
R
L
=8
VCC=2.5V 0.13%
Supply Ripple
Rejection Ratio
K
SVR
f
RIPPLE
=217Hz,
V
RIPPLE
=400mVpp,
input AC-ground with
C
I
=0.22F
VCC=5V -62 dB
Signal to Noise Ratio SNR
P
OUT
=1W,
R
L
=8
97.7 dB
No
weighting
53
Output Noise V
n
VCC=5V, f=20 to
20kHz, input AC-
ground with
C
I
=0.22F
A-weighting 37
V
RMS
Common Mode
Rejection Ratio
CMRR
V
IC-RIPPLE
=1 V
PP
,
f
RIPPLE
=217Hz
VCC=5V -65 dB
Start-up Time From
Disable
T
S
1 ms
MP1740 –3W HIGH EFFCIENCY MONO CLASS-D AUDIO AMPLIFIER
MP1740 Rev. 1.0 www.MonolithicPower.com 5
1/5/2012 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved
PIN FUNCTIONS
Ball
WLCSP
Name
Input/Ouput
/Power
(I/O/P)
Description
A1 INP I Positive differential input
A2 AGND P Analog Ground
A3 VON O Negative BTL output
B1 AVCC P Analog Power Supply
B2 PVCC P Power Supply
B3 PGND P Power Ground
C1 INN I Negative differential input
C2 EN I Enable Input. (drive high to enable the MP1740)
C3 VOP O Positive BTL output
TYPICAL PERFORMANCE CHARACTERISTICS
TEST SET-UP FOR GRAPHS
+
-
EN
VCC
Cs
40kHz Low
Pass Filter
Measurement
Output
C
I
Load
C
I
+
-
Measurement
Input
0.22uF
Cs
0.22uF
Cs
10uF
MP1740
EN
AVCC
AGND
INP
INN
VON
PGND
PVCC
VOP
R
I
R
I
Notes:
5) C
I
was Shorted for any Common-Mode input voltage measurement
6) A 33µH inductor was placed in series with the load resistor to emulate a small speaker for efficiency measurements.
7) The 40 kHz low-pass filter is required even if the analyzer has a low-pass filter.
8) For PSRR test, Please remove the great 10uF decoupling capacitor and just keep the small decoupling capacitors for recovery switching
currents.
MP1740 –3W HIGH EFFCIENCY MONO CLASS-D AUDIO AMPLIFIER
MP1740 Rev. 1.0 www.MonolithicPower.com 6
1/5/2012 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved
TYPICAL PERFORMANCE CHARACTERISTICS
VCC=AVCC=PVCC=EN, AGND = PGND = 0V, signal frequency fs=1kHz, R
I
=150kohm, Gain=2 V/V,
C
I
=2.2uF, T
A
= +25°C, unless otherwise noted.
THD+N (%)
THD+N (%)
P
OUT
(W) Frequency (Hz)
Frequency (Hz)
0.01
20
0.02
0.05
0.1
0.2
0.5
1
2
5
10
-10
+4
-8
-6
-4
-2
+0
+2
10 40k20 50 100 200 500 1k 2k 5k 10k 20k
20 20k50 100 200 500 1k 2k 5k 10k
d
B
r
A
-
100
+0
-90
-80
-70
-60
-
50
-
40
-30
-2 0
-1 0
20 20k50 100 200 500 1k 2 k 5 k 10 k
PSRR vs.Frequency
0
10
20
30
40
50
60
70
80
90
100
0 0.5 1 1.5 2 2.5 3 3.5
EFFICIENCY(%)
0
0.1
0.2
0.3
0.4
0.5
0.6
0 0.5 1 1.5 2 2.5 3
POWER DISSIPATION(W)
Power Dissipation vs. P
OUT
V
CC
=5V
Efficiency vs. P
OUT
V
CC
=5V
Frequency (Hz)
PSRR (dB)
60m 4100m 200m 300m 500m 1 2 3
2.5V
3.6V
5V
5.5V
THD+N (%)
THD+N (%)
P
OUT
(W)
Frequency (Hz)
Frequency (Hz)
0.01
20
0.02
0.05
0.1
0.2
0.5
1
2
5
10
0.01
20
0.02
0.05
0.1
0.2
0.5
1
2
5
10
60m 2
3
100m 200m 300m 500m 1
-10
+4
-8
-6
-4
-2
+0
+2
10 40k20 50 100 200 500 1k 2k 5k 10k 20k
0.001
20
0.01
0.1
1
5
20 20k50 100 200 500 1k 2k 5k 10k
50mW
250mW
1W
d
B
r
A
P
OUT
(W) P
OUT
(W)
2.5V
5.5V
3.6V
5V
100mW
2W
500mW
R
L
R
L
R
L
R
L
P1-P3P4-P6P7-P9P10-P11

MP1740EC-LF-P

Mfr. #:
Buy MP1740EC-LF-P
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Audio Amplifiers 3W Mono Class-D Audio Amplifier
Lifecycle:
New from this manufacturer.
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