
4-231
Description
The CD22301 monolithic PCM repeater circuit is designed
for T1 carrier systems operating with a bipolar pulse train of
1.544Mbits/s. It can also be used in the T148 carrier system
operating with a ternary pulse train of 2.37Mbits/s. The cir-
cuit operates from a 5.1V
±
5% externally regulated supply.
The CD22301 provides active circuitry to perform all func-
tions of signal equalization and amplification, automatic line
buildout (ALBO), threshold detection, clock extraction, pulse
timing and buffered output formation.
Features
Automatic Line Buildout
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1V
Buffered Output
Applications
Bipolar Carrier System . . . . . . . . . . . . .T1 1.544Mbits/s
Ternary Carrier System . . . . . . . . . . . .T148 2.37Mbits/s
Ordering Information
PART
NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG. NO.
CD22301E
-40 to 85
18 Ld PDIP
E18.3
January 1997
Functional Diagram
ALBO OUTPUT CIRCUIT
17
1
2
3
4
V
CC
FROM ALBO
PEAK DETECTOR
V
EE
100
ALBO BIAS
AO1
50K
18K
15K
AO2
AO3
ALBO GND
100
100
100
100
100
1K
Pinout
CD22301 (PDIP)
TOP VIEW
10
11
12
13
14
15
16
17
18
9
8
7
6
5
4
3
2
1
ALBO GROUND
ALBO 1 OUTPUT
ALBO 2 OUTPUT
ALBO 3 OUTPUT
PREAMP INPUT +
PREAMP INPUT -
PREAMP OUTPUT +
PREAMP OUTPUT -
SUBSTRATE
ALBO BIAS
OSC BIAS
LC TANK INPUT
CLOCK LIMITER OUTPUT
TIMING PULSE INPUT
OUTPUT PULSE 1
OUTPUT PULSE 2
V
EE
V
CC
CD22301
Monolithic PCM Repeater
File Number
1368.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
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Copyright
Intersil Corporation 1999