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LUCL9500AGF-D Datasheet

  • LUCL9500AGF-D

  • High-Voltage Ringing SLIC for VolP Applications

  • 32頁

  • AGERE

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L9500A
High-Voltage Ringing SLIC for VoIP Applications
Preliminary Data Sheet
September 2001
Pin Information
(continued)
Table 1. Pin Descriptions
28-Pin
PLCC
1
48-Pin
MLCC
43
Symbol
NSTAT
Type
O
Name/Function
2
45
VITR
3
47
RCVP
4
48
RCVN
5
1
RING
INN
6
2
RING
INP
7
6
DCOUT
8
9
10
8
10
12
CF2
CF1
RTFLT
11
12
13
14
15
16
17
13
15
16
19
21
23
3, 4, 5, 7, 9, 11,
14, 17, 18, 20,
22, 27, 29, 30,
32, 36, 37, 40,
42, 44, 46
24
V
REF
AGND
V
CC
V
BAT1
V
BAT2
BGND
NC
Loop Closure Detector Output鈥擱ing Trip Detector Output.
When low, this logic output indicates that an off-hook condition
exists or ringing is tripped or a ring ground has occurred.
O
Transmit ac Output Voltage.
Output of internal AAC amplifier.
This output is a voltage that is directly proportional to the differ-
ential ac tip/ring current.
I
Receive ac Signal Input (Noninverting).
This high-impedance
input controls to ac differential voltage on tip and ring. This node
is a floating input.
I
Receive ac Signal Input (Inverting).
This high-impedance
input controls to ac differential voltage on tip and ring. This node
is a floating input.
I
Power Ring Signal Input.
Couple to a sine wave or lower crest
factor low-voltage ring signal. The input here is amplified to pro-
vide the full power ring signal at tip and ring. This signal may be
applied continuously, even during nonringing states.
I
Power Ring Signal Input.
Couple to a sine wave or lower crest
factor low-voltage ring signal. The input here is amplified to pro-
vide the full power ring signal at tip and ring. This signal may be
applied continuously, even during nonringing states.
O
dc Output Voltage.
This output is a voltage that is directly pro-
portional to the absolute value of the differential tip/ring current.
This is used to set ring trip threshold.
鈥?/div>
Filter Capacitor.
Connect a capacitor from this node to ground.
鈥?/div>
Filter Capacitor.
Connect a capacitor from this node to CF2.
鈥?/div>
Ring Trip Filter.
Connect this lead to DCOUT via a resistor and
to AGND with a capacitor to filter the ring trip circuit to prevent
spurious responses. A single-pole filter is needed.
O
SLIC Internal Reference Voltage.
Output of internal 1.5 V ref-
erence voltage.
GND
Analog Signal Ground.
PWR
Analog Power Supply.
User choice of 5 V or 3.3 V nominal
power or supply.
PWR
Battery Supply 1.
High-voltage battery.
PWR
Battery Supply 2.
Lower-voltage battery.
GND
Battery Ground.
Ground return for the battery supplies.
鈥?/div>
No Connection.
18
V
PROG
I
Current-Limit Program Input.
Connect ground to this pin to set
current limit to 25 mA; leave this pin open to set current limit to
40 mA.
8
Agere Systems Inc.

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