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): 17/28頁
文件大?。?/td> 135K
代理商: UPD9903GT
μ
PD9903
17
3.2 Combined Specifications with the
μ
PC7073
DC 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
DC feed resistance
R
BF
200
feed
180
200
220
400
feed
360
400
440
Minimum loop current
I
LMIN
V
BB
= –51 V
200
feed
21.7
22.2
22.6
mA
R
L
= 1900
400
feed
18.2
18.8
19.3
Maximum current setting
I
LMAX
I
LMAX
= 76 mA setting
200
feed
70
76
82
mA
value
400
feed
50
55
60
I
LMAX
= 45 mA setting
40
45
50
I
LMAX
= 35 mA setting
31
35
39
Pin voltage during on-hook
V
TS
Normal on-hook,
between Tip and GND, V
BB
= –48 V
2.25
2.55
2.85
V
V
RS
Normal on-hook,
between Ring and V
BB
, V
BB
= –48 V
3.05
3.35
3.65
V
TS
On-hook transmission,
between Tip and GND, V
BB
= –48 V
2.25
2.55
2.85
V
RS
On-hook transmission,
between Ring and V
BB
, V
BB
= –48 V
3.05
3.35
3.65
Voltage between lines
during on-hook
V
TS
V
BB
= –48 V
V
BB
7.0 V
BB
5.9 V
BB
5.0
V
Supervisory control
– V
BB
abnormal voltage
V
BBF
32
35
38
V
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