參數(shù)資料
型號: LX1721EVALKIT
英文描述: AudioMAX Products
中文描述: AudioMAX產(chǎn)品
文件頁數(shù): 11/14頁
文件大?。?/td> 357K
代理商: LX1721EVALKIT
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 11
Copyright
2000
Rev. 0.1b,2001-09-19
W
M
.
C
AudioMAX
LX1721 / 1722
Class-D Stereo Power Amplifier Controller
P
RELIMINARY
L I N F I N I T Y D I V I S I O N
C H A R A C T E R I S T I C C U R V ES ( C O N T I N U E D )
-150
+10
+0
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
-94.11
-96.079
d
20
20k
50
100
200
500
2k
5k
10k
3.96192k
.973932k
Frequency (Hz)
dx=-2.9880 kHz
dy=-1.969 dB
F
IGURE
11
– N
OISE
F
LOOR
FFT
V
IN
= 25V
R
L
= 4
10Hz – 22kHz Bandwidth
A-Weighted
45%
50%
55%
60%
65%
70%
75%
80%
85%
90%
0
5
10
15
20
25
30
Output Power (W)
E
8
4
2
F
IGURE
12 –
E
FFICIENCY VS
. O
UTPUT
P
OWER
V
IN
= 15V
f
IN
= 1kHz
Power Supply Rejection Ratio (PSRR)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
100
1000
10000
100000
Frequency (Hz)
A
15V+1,Left
15V+1,Right
15V-1,Left
15V-1,Right
F
IGURE
13 –
P
OWER
S
UPPLY
R
EJECTION
R
ATIO
(PSSR)
P
O
= 1W
RMS
R
L
= 4
G
R
A
P
H
S
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