HC-5502B Intersil Corporation, HC-5502B Datasheet - Page 9

• Manufacturer Part Number: HC-5502B
• Description: Eia/itu Pabx Slic With 30ma Loop Feed
• Manufacturer: Intersil Corporation

Applications Diagram
Typical Component Values
C
C
C
C
C
C
C
C
NOTES:
10. Pin numbers given for DIP/SOIC package.
6. C
7. To obtain the specified transhybrid loss it is necessary for the three legs of the balance network, C
8. Secondary protection diode bridge recommended is a 2A, 200V type.
9. All grounds (AG, BG, and DG) must be applied before V
1
2
3
4
5
6
8
9
= 0.5 F (Note 6).
= 0.15 F, 10V.
= 0.3 F, 30V.
= 0.5 F to 1.0 F, 10%, 20V (Should be nonpolarized).
= 0.5 F, 20V.
= C
= 0.01 F, 100V.
= 0.01 F, 20V, 20%.
pedance to within 0.3%. Thus, if C
22V step when the loop is closed. Too large a value for C
ter/CODEC.
A 0.5 F and 100k
current limiting protection.
to run separate grounds off a line card, the AG must be applied first.
RING GENERATOR
150V
1
is an optional capacitor used to improve V
7
= 0.5 F (10% Match Required) (Note 7), 20V.
PEAK
SUBSCRIBER
RING
TIP
(MAX)
LOOP
PTC
PROTECTION
PRIMARY
Z
1
gives a time constant of 50ms. The uncommitted op amp output is internally clamped to stay within 5.5V and also has
12V
R
FIGURE 1. TYPICAL LINE CIRCUIT APPLICATION WITH THE MONOLITHIC SLIC
S
55
R
B3
C
S
6
RING
RELAY
R
and C
B4
R
R
B1
B2
V
7
B
are 1 F each, a 20% match is adequate. It should be noted that the transmit output to C
-
10
B
8
1
9
2
+ supply rejection. This pin must be left open if unused.
15
POWER
DENIAL
RD
RING FEED
RING
TIP
TIP FEED
BATT.
NEG.
-48V
11
SYSTEM CONTROLLER
C
B
8
SWITCH
DETECT
13
HOOK
BATT.
+ or V
GND.
6
may produce an excessively long transient at the op amp output to the PCM Fil-
HC-5502B
12
HC-5502B
B
GROUND
SLIC
14
DETECT
-. Failure to do so may result in premature failure of the part. If a user wishes
GND.
DIG.
KEY
6
OP AMP
ANA.
GND.
SYNC
7
RING
R
value), ZB = 0 for 600 Terminations (Note 7).
R
absolute value).
R
and line length.
Z
generator ballast.
TRANSMIT
23
1
RECEIVE
1
B1
S
C
= R
= 150V to 200V transient protection. PTC used as ring
= 1k , C
9
SUPP.
POS.
RING
= R
CMD
OUT
V
+IN
-IN
C1
C2
C3
C4
B
2
16
3
+
B2
= R
24
20
18
17
22
19
21
= R
4
5
C
3
S
4
= 100k
= 0.1 F, 200V typically, depending on V
B3
C
3
= R
C
BALANCE NETWORK
6
B4
2
-R
C
R
R
(0.1% Match Required, 1% absolute
6
1
1
2
= 150
C
and R
C
1
5
ZB
2
C
R
(0.1% Match Required, 1%
and C
7
3
7
-ZB-R
FILTER/
CODEC
PCM
3
, to match in im-
SWITCHING
NETWORK
6
sees a -
RING