HC55120_06 Datasheet, PDF (33/36 Pages) Intersil Corporation – Low Power Universal SLIC Family

HC55120, HC55121, HC55130, HC55140, HC55142, HC55143, HC55150
Basic Application Circuit - Voice Only 28 Lead SOIC Package
R₁₁
+5V
+5V OR
+12V
RELAY
RING
R_P
20
C₁
V_CC
3
RRLY
4
CH
C₂
5
RING
U2
C_{8 6}
BGND
U1
27
V_TX
26
SPM
25
V_RX
28
AGND
1
ZT
TIP
R_P
C₉
7
24
RSYNC_REV
TIP
D₁
8
V_BH
23
ILIM
22
-24V
OPTIONAL
C7
9
V_BL
R_OH
21
RD
-48V
C₅
R_{1 10}
RDC_RAC
SHD ¹⁹
C₆
+ - 11
CDC
R₂ C_{3 12}
15
GKD_LVM
18
DT
C1
R₁₂
13
DR
17
C2
RING
R₃
14 _{CRT_REV_LVM}
16
C3
GENERATOR
C₄
V_BAT
+5V
††C10
†R₉
††C11 ^†R10
CODEC/FILTER
R₈
R₇
† PERFORM TRANSHYBRID BALANCE
R₆
WHEN USING A NON-DSP CODEC.
NOT REQUIRED FOR DSP CODEC.
R₅
†† NOT REQUIRED FOR
R₄
NON-DSP CODEC’s.
REQUIRED FOR DSP CODEC’s
CONTROL LOGIC
FIGURE 29. UniSLIC14 VOICE ONLY BASIC APPLICATION CIRCUIT
TABLE 4. 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)
21kΩ
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 = 3.2V_PEAK, 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.
33
FN4659.13
June 1, 2006