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| 型號(hào)： | L9216A |
| 英文描述： | CAP CER 270PF 3.15KVDC R3 RAD |
| 中文描述： | 短環(huán)振鈴用戶接口與地面開始 |
| 文件頁(yè)數(shù)： | 41/48頁(yè) |
| 文件大?。?/td> | 1062K |
| 代理商： | L9216A |
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Preliminary Data Sheet
September 2001
Short-Loop Ringing SLIC with Ground Start
L9216A/G
Agere Systems Inc.
41
ac Applications
(continued)
Design Examples
(continued)
Blocking Capacitors
(continued)
Table 25. Parts List L9216; Agere T7504 First-Generation Codec Complex Termination; Meter Pulse
Application
Termination impedance = 220
+ (820
|| 115 nF), hybrid balance = 220
+ (820
|| 115 nF) Tx = 0 dBm,
Rx = 0 dBm.
Name
Value
Tolerance
Rating
Fault Protection
R
PT
30
1%
Fusible or PTC Protection resistor.
R
PR
30
1%
Fusible or PTC Protection resistor.
Protector
Agere
L7591
Power Supply
C
BAT1
0.1
μ
F
20%
100 V
V
BAT
filter capacitor.
C
BAT2
0.1
μ
F
20%
50 V
V
BAT
filter capacitor. |V
BAT2
| < |V
BAT1
|.
D
BAT1
1N4004
—
—
Reverse current.
C
CC
0.1
μ
F
20%
10 V
V
CC
filter capacitor.
C
F1
0.22
μ
F
20%
100 V
Filter capacitor.
C
F2
0.1
μ
F
20%
100 V
Filter capacitor.
Ring/Ring Trip
C
RING
0.47
μ
F
20%
10 V
ac-couple input ring signal.
C
RT
0.1
μ
F
20%
10 V
Ring trip filter capacitor.
R
RT
383 k
1%
1/16 W
Ring trip filter resistor.
ac Interface
R
GX
4750
1%
1/16 W
Sets T/R to VITR transconductance.
R
TGS
1.74 k
1%
1/16 W
Gain shaping for complex termination.
C
GS
12 nF
5%
10 V
Gain shaping for complex termination.
C
TX
0.1
μ
F
20%
10 V
ac/dc separation.
C
C1
0.1
μ
F
20%
10 V
dc blocking capacitor.
C
C2
0.1
μ
F
20%
10 V
dc blocking capacitor.
R
T3
49.9 k
1%
1/16 W
With R
GP
and R
RCV
, sets termination impedance and receive
gain.
R
T6
40.2 k
1%
1/16 W
With R
X
, sets transmit gain.
R
X
115 k
1%
1/16 W
With R
T6
, sets transmit gain.
R
HB1
113 k
1%
1/16 W
With R
X
, sets hybrid balance.
R
RCV
59.0 k
1%
1/16 W
With R
GP
and R
T3
, sets termination impedance and receive
gain.
R
GP
54.9 k
1%
1/16 W
With R
RCV
and R
T3
, sets termination impedance and receive
gain.
C
N
120 pF
20%
10 V
High frequency compensation.
R
N1
127 k
1%
1/16 W
High frequency compensation.
R
N2
47.5 k
1%
1/16 W
High frequency compensation, compensate for dc offset at
RCVP/RCVN.
Function
—
—
Secondary protection.
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