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參數(shù)資料
| 型號： | L9214A |
| 英文描述： | CAP CER 220PF 3.15KVDC R3 RAD |
| 中文描述： | 低成本振鈴用戶接口 |
| 文件頁數(shù)： | 33/46頁 |
| 文件大?。?/td> | 790K |
| 代理商： | L9214A |
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Preliminary Data Sheet
October 2001
Low-Cost Ringing SLIC
L9214A/G
Agere Systems Inc.
33
ac Applications
(continued)
Design Examples
(continued)
Example 1, Real Termination
(continued)
Table 20. L9214 Parts List for Agere T7504 First-Generation Codec; Resistive Termination
Note: T
X
= 0 dBm, R
X
= 0 dBm, termination impedance = 600
,
hybrid balance = 600
.
Name
Value
Tolerance
Rating
Function
Fault Protection
R
PT
R
PR
Protector
30
30
Agere
L7591
1%
1%
—
Fusible or PTC Protection resistor.
Fusible or PTC Protection resistor.
—
Secondary protection.
Power Supply
C
VBAT1
C
VBAT2
D
BAT1
C
CC
C
F1
C
F2
dc Profile
R
IPROG
R
IREF
Ringing/Ring Trip
C
RT
R
RT1
R
RT2
C
FB1
0.1
μ
F
0.1
μ
F
1N4004
0.1
μ
F
0.22
μ
F
0.1
μ
F
20%
20%
—
20%
20%
20%
100 V
50 V
—
10 V
100 V
100 V
V
BAT
filter capacitor.
V
BAT
filter capacitor. |V
BAT2
| < |V
BAT1
|.
Reverse current.
V
CC
filter capacitor.
Filter capacitor.
Filter capacitor.
5.76 k
28.7 k
1%
1%
1/16 W
1/16 W
With R
IREF
,
fixes dc current limit.
With R
IPROG
,
fixes dc current limit.
1.0
μ
F
100 k
150 k
0.01
μ
F
20%
1%
1%
20%
10 V
1/16 W
1/16 W
100 V
Ring trip filter capacitor.
Ring trip filter resistor.
Ring trip filter resistor.
With C
FB2
, slows rate of battery reversal. Sets crest factor
of balanced power ring signal.
With C
FB1
, slows rate of battery reversal. Sets crest factor
of balanced power ring signal.
C
FB2
0.01
μ
F
20%
100 V
ac Interface
R
GX
R
CR
C
CC1
C
TX
C
C1
C
C2
R
T3
4750
5 k
150 pF
0.1
μ
F
0.1
μ
F
0.1
μ
F
69.8 k
1%
5%
20%
20%
20%
20%
1%
1/16 W
1/16 W
10 V
10 V
10 V
10 V
1/16 W
Sets T/R to VITR transconductance.
Compensation resistor.
Compensation capacitor.
ac/dc separation.
dc blocking capacitor.
dc blocking capacitor.
With R
GP
and R
RCV
, sets termination impedance and
receive gain.
With R
X
, sets transmit gain.
With R
T6
, sets transmit gain.
With R
X
, sets hybrid balance.
With R
GP
and R
T3
, sets termination impedance and
receive gain.
With R
RCV
and R
T3
, sets termination impedance and
receive gain.
Optional. Compensates for input offset at RCVN/RCVP.
R
T6
R
X
R
HB1
R
RCV
49.9 k
100 k
100 k
60.4 k
1%
1%
1%
1%
1/16 W
1/16 W
1/16 W
1/16 W
R
GP
26.7 k
1%
1/16 W
R
GN
Optional
17.6 k
1%
1/16 W
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