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.

PACKAGE

PKG. NO.

CD22301E

-40 to 85

18 Ld PDIP

E18.3

January 1997

Functional Diagram

ALBO OUTPUT CIRCUIT

17

1

2

3

4

FROM ALBO

PEAK DETECTOR

100

Ω

ALBO BIAS

AO1

50K

18K

15K

AO2

AO3

ALBO GND

100

Ω

100

Ω

100

Ω

100

Ω

100

Ω

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

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