HC55121IBZ Intersil, HC55121IBZ Datasheet - Page 33

• Manufacturer Part Number: HC55121IBZ
• Manufacturer: Intersil

Specifications of HC55121IBZ

• Number Of Channels: 1
• On-hook Transmission: Yes
• Polarity Reversal: Yes
• On-chip Ring Relay Driver: Yes
• Longitudinal Balanced: 53
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: -40C to 85C
• Loop Current Limit: 30mA
• Operating Temperature Classification: Industrial
• Pin Count: 28
• Mounting: Surface Mount
• Operating Current: 2.7mA
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (min): 4.75V
• Lead Free Status / RoHS Status: Compliant

Basic Application Circuit - Voice Only 28 Lead SOIC Package
Design Parameters: Maximum on hook voltage = 0.775V
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.
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
-48V
-24V
RING
+5V OR
HC55120, HC55121, HC55130, HC55140, HC55142, HC55143, HC55150
TIP
C
+12V
5
C
R
RELAY
6
12
COMPONENT
R
33
R
RING
GENERATOR
V
P
BAT
P
OPTIONAL
FIGURE 29. UniSLIC14 VOICE ONLY BASIC APPLICATION CIRCUIT
U2
TABLE 4. BASIC APPLICATION CIRCUIT COMPONENT LIST
R
R
D
2
3
1
+5V
C
C
+
1
C
9
+5V
C
C7
C
R
2
3
8
1
-
C
4
20
10
11
12
13
14
3
4
5
6
7
8
9
RMS
RING
BGND
TIP
V
RRLY
CH
V
V
RDC_RAC
CDC
DT
DR
CRT_REV_LVM
CC
BH
BL
, Maximum Off hook Voice = 3.2V
U1
RSYNC_REV
GKD_LVM
UniSLIC14 Family
AGND
TISP1072F3
SPM
SHD
ILIM
R
V
V
RD
OH
RX
C1
C2
C3
TX
ZT
1N4004
VALUE
2200pF
41.2kΩ
38.3kΩ
33.2kΩ
34.8kΩ
0.47µF
107kΩ
0.1µF
0.1µF
0.1µF
4.7µF
400Ω
21kΩ
20kΩ
2MΩ
30Ω
27
26
25
28
1
24
23
22
21
19
15
18
17
16
R
R
R
R
R
8
7
6
5
4
PEAK
CONTROL LOGIC
††
, Switch Hook Threshold = 12mA, Loop Current
C10
TOLERANCE
††
Matched 1%
C11
†
††
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.
-
NOT REQUIRED FOR
NON-DSP CODEC’s.
REQUIRED FOR DSP CODEC’s
†
†
R
R
9
10
CODEC/FILTER
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
-
June 1, 2006
FN4659.13