Philips Semiconductors

Product specification

SA5224

FDDI fiber optic postamplifier

2

1998 Oct 07

853-1594 20141

DESCRIPTION

The SA5224 is a high-gain limiting amplifier that is designed to

process signals from fiber optic preamplifiers. Capable of operating

at 125Mb/s, the chip is FDDI compatible and has input signal

level-detection with a user-adjustable threshold. The DATA and

LEVEL-DETECT outputs are differential for optimum noise margin

and ease of use. Also available is the SA5225 which is an ECL 10K

version of the SA5224.

FEATURES

PIN DESCRIPTION

D Package

CAZN

CAZP

GNDA

DIN

DOUT

DOUT

VREF

VSET

1

2

3

4

5

6

7

8

9

10

11

12

13

14

16

15

DIN

CF

JAM

VCCA

VCCE

GNDE

ST

ST

SD00374

Figure 1. Pin Configuration

APPLICATIONS

ORDERING INFORMATION

DESCRIPTION

TEMPERATURE RANGE

ORDER CODE

DWG #

16-Pin Plastic Small Outline (SO) package

–40 to +85

SA5224D

SOT109-1

BLOCK DIAGRAM

(6)

(2)

(1)

(16)

(13)

(12)

(8)

(9)

(10)

(11)

(7)

(3)

(16)

(15)

(5)

(4)

LIMITING

AMPLIFIER

ECL

BUFFER

JAM

BUFFER

SD

BUFFER

LEVEL

DETECTOR

REFERENCE

DIN

DIN

VREF

VSET

GNDA

CF

GNDE

DOUT

DOUT

JAM

ST

VCCE

CAZN

CAZP

VCCA

ST

SD00375

Figure 2. Block Diagram