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기능 LUCL8560GP
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8560GP 데이터시트, 핀배열, 회로
www.DataSheeDt4Ua.tcaomSheet
April 2000
L8560 Low-Power SLIC with Ringing
Features
Description
s Full-feature set for central office applications
s Also ideal for ISDN terminal adapters, pair gain,
and cable telephony applications
s Auxiliary input for second battery, and internal
switch to enable its use to save power in short tele-
phone loops
s 5 V only operation or optional ±5 V operation for
reduced power consumption
s Low active power (85 mW typical) and scan power
(61 mW typical) with 5 V only operation
s Low active power (68 mW typical with auxiliary bat-
tery) and scan power (45 mW typical) with ±5 V
operation
s Quiet tip/ring polarity reversal
s Per-line ringing available for short loops
s Reduced overhead and increased current limit dur-
ing ring mode for lower-battery operation or
increased ring loop length
s Supports meter pulse injection
s Distortion-free full duplex from 0 mA dc loop cur-
rent on-hook transmission
s Convenient operating states:
— Forward powerup
— Polarity reversal powerup
— Forward sleep
— Ground start
— Disconnect
s Adjustable supervision functions:
— Off-hook detector with longitudinal rejection
— Ground key detector with longitudinal rejection
— Ring trip detector
s Independent, adjustable dc and ac parameters:
— dc feed resistance (44-pin PLCC version)
— Loop current limit
— Termination impedance
s Thermal protection
The L8560 full-feature, low-power subscriber line
interface circuit (SLIC) is optimized for low power
consumption while providing an extensive set of fea-
tures. This part is ideal for ISDN terminal adapter
applications and short-loop, power-sensitive applica-
tions such as pair gain and cable telephony. This part
is also designed for PBX, DLC, or CO applications.
The SLIC includes an auxiliary battery input and a
battery switch. In short-loop applications, SLICs can
be used in high battery to present a high on-hook
voltage, and then switched to low battery to reduce
off-hook power.
To help minimize the required auxiliary battery volt-
age, the dc feed resistance and overhead voltage are
set at 55 and 6.7 V, respectively. This allows an
undistorted on-hook transmission of a 3.14 dBm sig-
nal into a 900 loop impedance.
The device offers the reverse battery function. Using
the reverse battery, the device can provide a bal-
anced power ring signal to tip and ring. In this
mode of operation, the battery switch is used to
apply a high-voltage battery during ringing and a
lower-voltage battery during the talk and idle states.
Also included in the L8560 is a dc current-limit
switch, which increases the dc current limit during
power ringing. In addition, dc overhead voltage is
reduced during the ring state. With the battery and
current-limit switches, and overhead reduction, the
L8560 can provide sufficient power to ring a true
North American 5 REN load of 1386 + 40 µF.
The device offers ring trip and loop closure supervi-
sion with 0.3 V and 2 mA hysteresis, respectively. It
also includes the ground start state and ring ground
detection. A summing node for meter pulse injection
to 2.2 Vrms is also included. The 44-pin PLCC ver-
sion also has a spare uncommitted op amp, which
may be used for ac gain setting or meter pulse filter-
ing.




8560GP pdf, 반도체, 판매, 대치품
www.DataSheet4U.com
L8560 Low-Power SLIC with Ringing
Data Sheet
April 2000
Description (continued)
The L8560 product family is graded by different fea-
tures, specifications, and package options. The
L8560Axx is the basic full-feature SLIC that operates
with 5 V and a battery supply, and is available in the
32-pin PLCC (AAU) package and the 44-pin PLCC
package (AP). This part is graded as the 54 dB longitu-
dinal balance part. Additional features (spare op amp
and overhead voltage programming) are available in
the 44-pin PLCC package.
The L8560CAU is available only in the 32-pin PLCC
package and has a feature set similar to the AAU ver-
sion, except the CAU version requires +5 V, –5 V, and
battery power supplies. With this option, power con-
sumption is greatly reduced.
The L8560DAU and L8560EP are available in the
32-pin and 44-pin PLCC packages and have feature
sets identical to the L8560AAU and L8560AP, respec-
tively, with the following modifications. These parts are
graded as high longitudinal balance (63 dB), and have
an additional logic state (scan with low battery) which
allows for low on-hook power dissipation.
The L8560FAU and L8560GP are available in the
32-pin and 44-pin PLCC packages and have feature
sets identical to the L8560AAU and L8560AP, respec-
tively, with the following modifications. These parts are
graded for lower longitudinal balance (50 dB), and
have an additional logic state (scan with battery) which
allows for low on-hook power dissipation.
Table 1 below summarizes the features in the L8560
product family.
Table 1. L8560 Product Family Feature Summary
Feature
32-Pin PLCC
44-Pin PLCC
5 V Operation
±5 V Operation (reduced power consumption)
Operational VBAT1 (V)
Battery Switch
Balanced Ring Mode
Adjustable Overhead
Spare Op Amp
Reverse Battery
Scan Mode
Scan Mode with Low Battery
Longitudinal Balance (dB)*
On-hook Transmission
Ground Start
Loop Start
Ring Trip Detector
Programmable Current Limit
Thermal Protection
AAU
X
NA
X
NA
–70
X
X
NA
NA
X
X
NA
54
X
X
X
X
X
X
AP
NA
X
X
NA
–70
X
X
X
X
X
X
NA
54
X
X
X
X
X
X
* More information is provided in the Applications section of this document.
CAU
X
NA
NA
X
–70
X
X
NA
NA
X
X
NA
54
X
X
X
X
X
X
L8560
DAU
X
NA
X
NA
–70
X
X
NA
NA
X
X
X
63
X
X
X
X
X
X
EP
NA
X
X
NA
–70
X
X
X
X
X
X
X
63
X
X
X
X
X
X
FAU
X
NA
X
NA
–70
X
X
NA
NA
X
X
X
50
X
X
X
X
X
X
GP
NA
X
X
NA
–70
X
X
X
X
X
X
X
50
X
X
X
X
X
X
4 Lucent Technologies Inc.

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8560GP 전자부품, 판매, 대치품
www.DataShDeeat4tUa.cSomheet
April 2000
L8560 Low-Power SLIC with Ringing
Pin Information (continued)
Table 2. Pin Descriptions
32-Pin 44-Pin
91
10 2
11 3
12 4
—5
—6
13 7
14 8
—9
15 10
— 11
16 12
17 13
18 14
19 15
20 16
21 17
22 18
23 19
— 20
— 21
24 22
25 23
Symbol
DCOUT
IPROG
CF2
CF1
SN
XMT
RTSN
RTSP
NC
AGND
NC
VCC
VBAT1
VBAT2
BGND
RGDET
ICM
BS2
BS1
NC
NC
PT
PR
Type
O
I
I
O
I
I
O
I
I/O
I/O
Description
dc Output Voltage. This output is a voltage that is directly proportional to the
absolute value of the differential tip/ring current.
Current-Limit Program Input. A resistor to DCOUT sets the dc current limit of
the device.
Filter Capacitor 2. Connect a 0.1 µF capacitor from this pin to AGND.
Filter Capacitor 1. Connect a 0.47 µF capacitor from this pin to pin CF2.
Summing Node. The inverting input of the uncommitted operational amplifier.
A resistor or network to XMT sets the gain (44-pin PLCC only).
Transmit ac Output Voltage. The output of the uncommitted operational
amplifier (44-pin PLCC only).
Ring Trip Sense Negative. Connect this pin to the ringing generator signal
through a high-value resistor.
Ring Trip Sense Positive. Connect this pin to the ring relay and the ringer
series resistor through a high-value resistor.
No Connection. May be used as a tie point.
Analog Signal Ground.
No Connection. May be used as a tie point.
5 V Power Supply.
Battery Supply. Negative high-voltage battery, higher in magnitude than VBAT2.
Auxiliary Battery Supply. Negative high-voltage battery, lower in magnitude
than VBAT1, used to reduce power dissipation on short loops.
Battery Ground. Ground return for the battery supply.
Ring Ground Detect. When high, this open-collector output indicates the pres-
ence of a ring ground. To use, connect a 100 kresistor to VCC.
Common-Mode Current Sense. To program ring ground sense threshold,
connect a resistor to VCC and connect a capacitor to AGND to filter 50/60 Hz. If
unused, the pin should be connected to ground.
Battery Switch Slowdown. Connect a 0.22 µF capacitor to pin BS1.
Battery Switch Slowdown. Connect a 0.22 µF capacitor to pin BS2. Also, con-
nect a 0.1 µF capacitor in series with a 100 resistor from BS1 to VBAT1 for sta-
bility.
No Connection. May be used as a tie point.
No Connection. May be used as a tie point.
Protected Tip. The output of the tip driver amplifier and input to loop sensing.
Connect to loop through overvoltage protection.
Protected Ring. The output of the ring driver amplifier and input to loop sens-
ing circuitry. Connect to loop through overvoltage protection.
Lucent Technologies Inc.
7

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8560GP

LUCL8560GP

Agere Systems
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