參數(shù)資料
型號： UPD9903GT
廠商： NEC Corp.
元件分類： Codec
英文描述： UPD9903 ANALOG SUBSCRIBER LINE LSI DIGITAL CODEC
中文描述： UPD9903模擬用戶線數(shù)字編解碼器大規(guī)模集成電路
文件頁數(shù)： 19/28頁
文件大?。?/td> 135K
代理商： UPD9903GT
μ
PD9903
19
Transmission characteristics
μ
PC7073 (V
BB
= –42 to –58 V, V
CC
= 5 V
±
0.25 V, T
A
= 0 to 70 C, 18
≤
I
L
≤
I
LMAX
(mA))
μ
PD9903 (T
A
= 0 to 70 C, V
DD
= 5 V
±
0.25 V, V
DG
= V
AG
= 0 V, f
DCLK
= 2048 kHz)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Units
Insertion loss
IL
A-D input signal
0 dBm0 1 kHz
–0.45
0.0
+0.45
dB
D-A input signal
0 dBm0 1 kHz
–0.45
0.0
+0.45
Transfer loss frequency
characteristics
F
RX
A-D
Reference input signal
1015 Hz 0 dBm0
60 Hz
200 Hz
300 Hz
24.0
0.6
–0.15
–0.15
–0.15
0.2
–
dB
2.0
+0.21
+0.15
+0.65
0.8
400 to 3000 Hz
3200 Hz
3400 Hz
F
RR
D-A
Reference input signal
1015 Hz 0 dBm0
60 Hz
200 Hz
300 Hz
0.2
0.1
–0.15
–0.15
–0.15
0.2
4.0
1.0
+0.25
+0.15
+0.65
0.8
400 to 3000 Hz
3200 Hz
3400 Hz
Gain tracking
(tone method)
GT
X
A-D
Reference input signal
–10 dBm0
f = 700 to 1100 Hz
+3 to –40 dBm0
–50 dBm0
–55 dBm0
–0.2
–0.5
–1.0
+0.2
+0.5
+1.0
dB
GT
R
D-A
Reference input signal
–10 dBm0
f = 700 to 1100 Hz
+3 to –40 dBm0
–50 dBm0
–55 dBm0
–0.2
–0.4
–0.8
+0.2
+0.4
+0.8
Return loss
RL
Input signal
0 dBm0
Z
T
= 600
+ 2.16
μ
F
300 Hz
16
20
16
dB
500 to 2000 Hz
2000 to 3400 Hz
Echo attenuation
TBRL
Input signal
0 dBm0
Z
T
= 600
+ 2.16
μ
F
300 Hz
18
22
18
dB
500 to 2500 Hz
3400 Hz
Transmit channel total
power distortion factor
(tone method)
SD
X
A-D
Input signal
f = 700 to 1100 Hz
+3 to –30 dBm0
–40 dBm0
–45 dBm0
36
30
25
dB
SD
R
D-A
Input signal
f = 700 to 1100 Hz
+3 to –30 dBm0
–40 dBm0
–45 dBm0
36
30
25
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