參數資料
型號: MSM7584C
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: π/4 Shift QPSK MODEM(π/4移動QPSK調制解調器/ADPCM編碼譯碼器)
中文描述: π/ 4移位的QPSK調制解調器(π/ 4移動的QPSK調制解調器/差分PcM編碼譯碼器)
文件頁數: 23/57頁
文件大?。?/td> 321K
代理商: MSM7584C
Semiconductor
MSM7584C
23/57
Analog Interface Characteristics (Modem)
Parameter
Output Resistance Load
Output Capacitance Load
Output DC Voltage Level
Symbol
R
LIQ
C
LIQ
V
DCM
Condition
I+, I–, Q+, Q–
I+, I–, Q+, Q–
I+, I–, Q+, Q–
(TXW = 0)
I+, I–, Q+, Q–
(For TXD = 0 continuous input)
Min.
10
1.55
Typ.
1.6
Max.
20
1.65
Unit
k
W
pF
V
(V
DD
= 2.7 V to 3.6 V, Ta = –25°C to +70°C)
Output AC Voltage Level
V
ACM
360
mV
PP
Output DC Voltage Adjustment Level Range
Output AC Voltage Adjustment Level Range
D
CVL
A
CVL
P600
P900
±45
±4
60
65
mV
%
dB
dB
%
rms
V
PP
k
W
V
k
W
V
PP
k
W
Out-of-band Spectrum
600 kHz detuning
900 kHz detuning
Modulation Accuracy
E
VM
1.0
3.0
Demodulator Side IF Input Level
IFIN Input Impedance
SGM Output Voltage
SGM Output Impedance
MCK Input Level
MCK Input Impedance
I
FV
R
IF
V
SGM
R
SGM
I
X
R
X
IFIN input level
DC impedance
0.5
0.7
20
2.0
1.5
20
V
DD
2.0
DC impedance
Digital Interface Characteristics (Modem)
Parameter
Transmit Digital I/O Setting Time
Symbol
t
XDM1,2
t
XDM3,4
t
RDM1,2
Cload = 50 pF
Condition
Min.
0
0
0
Typ.
Max.
200
400
200
Unit
ns
ns
ns
(V
DD
= 2.7 V to 3.6 V, Ta = –25°C to +70°C)
Reference
Cload = 50 pF
Fig. 10
Receive Digital I/O Setting Time
Fig. 11
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