參數(shù)資料
型號: AM79R79
廠商: Advanced Micro Devices, Inc.
英文描述: Ringing Subscriber Line Interface Circuit
中文描述: 振鈴用戶線接口電路
文件頁數(shù): 17/20頁
文件大?。?/td> 361K
代理商: AM79R79
SLIC Products
17
APPLICATION CIRCUIT
Note:
The input should be 50% duty cycle CMOS-compatible input.
I. Application Circuit
+5 V
VNEG
VCC
R
D
66 k
RD
VTX
RSN
R
RX
250 k
R
DC1
50 k
C
DC
820 nF
R
DC2
50 k
C
DCR
R
T1
RDC
5 V
VBAT1
DET
D
1
BGND
RYOUT1
RTRIP2
RTRIP1
BAT1
VBAT2
V
TX
V
RX
B2EN
D
2
BAT2
0.1 μF
RYOUT2
C1
C2
C3
D1
D2
E1
R
DCR1
RDCR
AGND/
DGND
R
SLEW
150 k
C
SLEW
0.33 μF
RINGIN
R
open
R
SGL
open
RSGL
RSGH
R
RT1
515 k
R
RT2
12 k
C
RT
1.5 μF
15 k
See Note.
0.1 μF
RYE
125 k
125 k
R
DCR2
15 k
C
T
R
T2
10 nF
Assumptions:
1. 1.25 CF
2. 25 mA I
LOOP
3. 100 mA Ringing Current Limit
4. 5.2 k
High Battery Loop Threshold
5. 925
Ringing Loop Threshold
6. 600
Two-wire Impedance,
600
Z
L
BATTERY
GROUND
ANALOG
GROUND
DIGITAL
GROUND
7. G
42L
= 1
8.
70 V Vbat1,
24 V Vbat2
HPB
HPA
A(TIP)
B(RING)
Bat1
TISP
61089
C
AX
= 2.2 nF
K1
K1
K2
K2
G
R
FA
= 50
TIP
R
FB
= 50
A
A
C
BX
= 2.2 nF
C
HP
18 nF
RING
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PDF描述
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