LX1721(2003) データシートの表示（PDF） - Microsemi Corporation
部品番号
コンポーネント説明
メーカー
LX1721 Datasheet PDF : 14 Pages
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INTEGRATED PRODUCTS
AudioMAX™
LX1721 / 1722
Class-D Stereo Power Amplifier Controller
PRODUCTION
CHARACTERISTIC CURVES (CONTINUED)
dx=-2.9880 kHz
+10
+0
dy=-1.969 dB
-10
-20
-30
-40
-50
-60
-70
-80
-90
--9964..0-1171090
-110
-120
-130
-140
-150
20
50
100
200
500
.973913k2k
Frequency (Hz)
2k
3.96192k5k
10k
20k
FIGURE 11 – NOISE FLOOR FFT
VIN = 25V
RL = 4Ω
10Hz – 22kHz Bandwidth
A-Weighted
90%
85%
80%
75%
70%
65%
60%
55%
50%
45%
0
5
10
15
20
25
30
Output Power (W)
8Ω
4Ω
2Ω
FIGURE 12 – EFFICIENCY VS. OUTPUT
POWER
VIN = 15V
fIN = 1kHz
Power Supply Rejection Ratio (PSRR)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
10
100
1000
10000
Frequency (Hz)
100000
15V+1,Left
15V+1,Right
15V-1,Left
15V-1,Right
FIGURE 13 – POWER SUPPLY REJECTION
RATIO (PSSR)
PO = 1WRMS
RL = 4Ω
Copyright 2001
Rev. 1.1,2003-06-10
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 11
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