HC55120CM INTERSIL [Intersil Corporation], HC55120CM Datasheet - Page 34

• Manufacturer Part Number: HC55120CM
• Description: Low Power Universal SLIC Family
• Manufacturer: INTERSIL [Intersil Corporation]

Basic Application Circuit
Design Parameters: Maximum on hook voltage = 0.775V
= 2.2V
resistors, impedance across Tip and Ring terminals = 600 . Where applicable, these component values apply to the Basic Application Circuits for
the HC55120, HC55121, HC55130/1, HC55140/1, HC55142/3 and HC55150/1. Pins not shown in the Basic Application Circuit are no connect (NC)
pins.
HC55120, HC55121, HC55130, HC55131, HC55140, HC55141, HC55142, HC55143, HC55150, HC55151
U1 - SLIC
U2 - Dual Asymmetrical Transient Voltage Suppressor
RP (Line Feed Resistors)
R1 (RDC_RAC Resistor)
R2, R3
R4 (RD Resistor)
R5 (ROH Resistor)
R6 (RILIM Resistor)
R7 (RSYNC_REV Resistor)
R8 (RZT Resistor)
R9, R10, R11
R12
C1 (Supply Decoupling), C2
C5 (Supply Decoupling)
C6 (Supply Decoupling)
C4, C7, C10, C11
C3
C8, C9
D1, Recommended if the VBL supply is not derived from the VBH Supply
RING
GENERATOR
VBAT
RMS
-48V
-24V
, Switch Hook Threshold = 12mA, Loop Current Limit = 31mA, Synthesize Device Impedance = 540 (600 - 60), with 30 protection
RING
+5V OR
TIP
+12V
C
5
R
RELAY
C
12
6
COMPONENT
R
4-34
R
P
P
OPTIONAL
FIGURE 30. UniSLIC14 PULSE METERING BASIC APPLICATION CIRCUIT
U2
R
R
D
2
3
1
TABLE 5. BASIC APPLICATION CIRCUIT COMPONENT LIST
+5V
C
C
C
C
1
9
+5V
C7
R
C
3
2
1
8
C
4
20
10
11
12
13
14
3
4
8
9
5
6
7
RING
BGND
TIP
V
RRLY
CH
V
V
RDC_RAC
CDC
DT
DR
CRT_REV_LVM
RMS
CC
BH
BL
, Maximum off hook voice = 1.1V
U1
RSYNC_REV
GKD_LVM
AGND
UniSLIC14 Family
SPM
SHD
PTG
R
ILIM
V
V
RD
OH
RX
C1
C2
C3
ZT
TX
TISP1072F3
1N4004
VALUE
2200pF
26.1k
41.2k
38.3k
33.2k
34.8k
0.47 F
107k
0.1 F
0.1 F
0.1 F
4.7 F
400
20k
2M
30
26
28
27
2
25
1
24
23
22
21
19
15
18
17
16
Pulse Metering 28 Lead SOIC Package
R
R
R
R
R
8
7
6
5
4
PEAK
CONTROL LOGIC
††
††
C10
, Maximum simultaneous pulse metering signal
C11
TOLERANCE
Matched 1%
20%
20%
20%
20%
20%
20%
†
N/A
N/A
1%
1%
1%
1%
1%
1%
1%
1%
5%
-
†
†
PERFORM TRANSHYBRID BALANCE
WHEN USING A NON-DSP CODEC.
NOT REQUIRED FOR DSP CODEC.
R
R
††
9
10
NON-DSP CODEC’s.
REQUIRED FOR DSP CODEC’s
NOT REQUIRED FOR
CODEC/FILTER
12/16KHz
PULSE METERING
INPUT SIGNAL
R
11
RATING
1/16W
1/16W
1/16W
1/16W
1/16W
1/16W
1/16W
1/16W
2.0W
100V
100V
10V
50V
10V
50V
N/A
N/A
2W
-