參數(shù)資料
型號(hào)： L7597
廠商： Lineage Power
英文描述： Resistive Subscriber Line Interface Circuit (SLIC), Ring Relay, and Protector (SRP) for Short Loop and TA-909 Applications(用于短環(huán)路和TA-909的電阻性用戶線接口、振鈴繼電器和保護(hù)器)
中文描述： 電阻用戶線接口電路（SLIC），環(huán)繼電器和保護(hù)（SRP）的短環(huán)路和TA - 909應(yīng)用（用于短環(huán)路和電訊- 909的電阻性用戶線接口，振鈴繼電器和保護(hù)器）
文件頁(yè)數(shù)： 6/34頁(yè)
文件大?。?/td> 564K
代理商： L7597
6
Lucent Technologies Inc.
Advance Data Sheet
March 1997
Relay, and Protector (SRP) for Short Loop and TA-909 Applications
L7597 Resistive Subscriber Line Interface Circuit (SLIC), Ring
Pin Information
(continued)
Table 1. Pin Descriptions
(continued)
* On the printed-wiring board (PWB), make the leads to FGND and V
the amount of PWB copper on all leads connected to this device for the lowest operating temperature.
BF
as wide as possible for thermal and electrical reasons. Also, maximize
Pin
12
Symbol Type
CE
Name/Function
I
Channel Enable.
disables the channel select input CS. A high on this logic input enables the channel
select input CS.
+5 Volt Digital dc Supply.
+5 V supply for logic and switch circuitry.
Digital Ground.
Ground return for V
DD
and the relay driver.
Relay Driver.
This output drives an external relay.
Ring Trip Sense.
Sense input for the ring trip detector.
Ringing Access Switch.
Ringing relay connects this pin to pin VRNG (ringing supply).
Connect this pin to pin V
BF
through a 600
current-limiting resistor.
Ringing Supply Voltage
. Connect this pin to the ringing supply.
High Office Battery Supply.
Most negative high-voltage power supply.
Feed Resistor Battery Supply.
Negative battery and ringing supply for the loop. Con-
nect this pin to the Ring of the loop through a 200
Fault Ground.
Ground return which carries the fault current when the fault protection is
operated.
Protected Ring.
The input to the Ring fault protection and output of Ring current drive
amplifier (via the Ring access switch). Connect this pin to the Ring of the loop through a
1 k
overvoltage protection resistor.
Protected Tip.
The input to the Tip fault protection and output of Tip current drive ampli-
fier. Connect this pin to the Tip of the loop through a 1 k
tor.
Current-Limiter Capacitor.
Connect a 0.1
μ
Low Office Battery Supply.
Least negative high-voltage power supply.
Analog Ground.
Ground return for analog circuitry.
+5 Volt Analog dc Supply.
+5 V supply for analog circuitry.
High Office Battery Supply.
Most negative high-voltage power supply.
Transmit Signal Output.
Transmit amplifier output to codec.
Tip Sense.
Negative (–) input of transmit op amp. Connect one high-value resistor
between TS and the Tip of the loop and another high-value resistor between TS and
XMT.
Ring Sense.
Positive (+) input of the transmit op amp. Connect one high-value resistor
between RS and the Ring of the loop and another high value resistor between RS and
AGND.
Receive Signal Input (–).
The differential current flowing from PT to PR is –200 times
the voltage applied to RCVN divided by the impedance connected between IRCV and
AGND.
A low on this logic input resets latches B0—B3 to the 1111 state and
13
14
15
16
17
V
DD
—
—
O
I
O
DGND
RDO
RTS
RSW
18
19
20
V
V
V
RNG
—
—
—
BATH
BF
*
battery feed resistor.
21
FGND*
—
22
PR
I/O
23
PT
I/O
overvoltage protection resis-
24
25
26
27
28
29
30
CLIM
V
BATL
AGND
V
CCA
V
BATH
XMT
TS
I
F capacitor from this pin to pin V
BF
.
—
—
—
—
O
I
31
RS
I
32
RCVN
I
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