參數(shù)資料
型號: MSM7575
廠商: OKI SEMICONDUCTOR CO., LTD.
元件分類: Codec
英文描述: Multi-Function ADPCM CODEC(多功能ADPCM(自適應差分脈沖編碼調(diào)制)編碼譯碼器)
中文描述: 多功能差分PcM編解碼器(多功能差分PcM(自適應差分脈沖編碼調(diào)制)編碼譯碼器)
文件頁數(shù): 14/25頁
文件大?。?/td> 187K
代理商: MSM7575
14/25
Semiconductor
MSM7575
AC Characteristics (Continued)
Digital Input/Output
Setting Time
t
SDX
0
200
*5(100)
200
*5(100)
t
XD1
0
t
XD2
0
200
ns
1LSTTL + 100 pF
pull-up: 500
W
P
SRRT
P
SRRR
Noise Freq.
: 0 to 50 kHz
30
30
dB
dB
Power Supply Noise
Rejection Ratio
Noise Level
: 50 mV
PP
t
XD3
0
200
Parameter
Symbol
Level
(dBm0)
Min.
Typ.
Max.
Unit
(V
DD
=
2.7 V to 3.6 V, Ta = –25°C to +70°C)
Freq.
(Hz)
Others
Condition
See
Fig.4
ns
ns
ns
t
M1
t
M2
t
M3
t
M4
t
M5
t
M6
t
M7
t
M8
t
M9
t
M10
t
M11
F
EXCK
50
50
50
50
100
50
50
0
50
50
0
50
50
10
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
Serial Port Digital
Input/Output Setting
Time
C
Load
= 100 pF
See
Fig.7
EXCK
Shift Clock Frequency
*5(100)
*5(100)
*2 Use the P-message weighted filter
*3 PCMRI input code
"11010101"(A-law)
"11111111"(
m
-law)
*4 0.320 Vrms = 0 dBm0 = –7.7 dBm
*5 Value in ( ) is for C
Load
= 10 pF Pull-up
20 k
W
Note:
All ADPCM coder and decoder characteristics comply with ITU-T Recommendation
G.721.
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