HC55120_06 Datasheet, PDF (32/36 Pages) Intersil Corporation – Low Power Universal SLIC Family

HC55120, HC55121, HC55130, HC55140, HC55142, HC55143, HC55150
Basic Application Circuit - Pulse Metering 28 Lead PLCC Package
+5V
+5V OR
+12V
RELAY
RING
R_P
20
C₁
V_CC
2
3 ^RRLY
CH
C₂
5
RING
U2
C_{8 6}
BGND
28
U1
V_TX
PTG ¹
27
SPM
VRX ²⁶
AGND ²⁵
4
ZT
TIP
R_P
C₉
7
24
RSYNC_REV
-24V
TIP
D₁
8
VBH
23
ILIM
22
-48V
C₅
OPTIONAL _{C7 9}
R_OH
VBL
21
C₆
R_{1 10 RDC_RAC}
RD
18
SHD
RING
GENERATOR
R₁₂
+ - 12
CDC
R₂
C_{3 13}
DT
14
DR
19
GKD_LVM
17
C1
16
C2
V_BAT
R₃
11
CRT_REV_LVM
15
C3
C₄
+5V
R₁₁
††C10
†R₉
††C11
†R₁₀
CODEC/FILTER
R₈
R₇
12/16kHz
R₆
PULSE METERING
INPUT SIGNAL
R₅
† PERFORM TRANSHYBRID BALANCE
R₄
WHEN USING A NON-DSP CODEC.
NOT REQUIRED FOR DSP CODEC.
†† NOT REQUIRED FOR
NON-DSP CODEC’s.
REQUIRED FOR DSP CODEC’s
CONTROL LOGIC
FIGURE 28. UniSLIC14 PULSE METERING BASIC APPLICATION CIRCUIT
TABLE 3. BASIC APPLICATION CIRCUIT COMPONENT LIST
COMPONENT
VALUE
TOLERANCE
RATING
U1 - SLIC
UniSLIC14 Family
N/A
N/A
U2 - Dual Asymmetrical Transient Voltage Suppressor
TISP1072F3
N/A
N/A
RP (Line Feed Resistors)
30Ω
Matched 1%
2.0W
R1 (RDC_RAC Resistor)
26.1kΩ
1%
1/16W
R2, R3
2MΩ
1%
1/16W
R4 (RD Resistor)
41.2kΩ
1%
1/16W
R5 (ROH Resistor)
38.3kΩ
1%
1/16W
R6 (RILIM Resistor)
33.2kΩ
1%
1/16W
R7 (RSYNC_REV Resistor)
34.8kΩ
1%
1/16W
R8 (RZT Resistor)
107kΩ
1%
1/16W
R9, R10, R11
20kΩ
1%
1/16W
R12
400Ω
5%
2W
C1 (Supply Decoupling), C2
0.1µF
20%
10V
C5 (Supply Decoupling)
0.1µF
20%
50V
C6 (Supply Decoupling)
0.1µF
20%
100V
C4, C7, C10, C11
0.47µF
20%
10V
C3
4.7µF
20%
50V
C8, C9
2200pF
20%
100V
D1, Recommended if the VBL supply is not derived from the VBH Supply
1N4004
-
-
Design Parameters: Maximum on hook voltage = 0.775V_RMS, Maximum off hook voice = 1.1V_PEAK, Maximum simultaneous pulse metering
signal = 2.2V_RMS, Switch Hook Threshold = 12mA, Loop Current Limit = 31mA, Synthesize Device Impedance = 540Ω (600 - 60), with 30Ω
protection resistors, impedance across Tip and Ring terminals = 600Ω . 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.
32
FN4659.13
June 1, 2006