4-1

PRELIMINARY

HIP9022

Dual High Speed Laser Driver

The HIP9022 Dual High Speed Laser Driver is designed to

operate with a constant current drain from the power supply.

This current defines the laser operating power. The current is

accurately controlled in the range of 0.5A to 2A to deliver

constant optical power from the laser when used with an

external Power FET and Power Sense resistor. The operating

circuit allows flexibility in choosing driver current levels.

Eight S/H circuits are multiplex bus controlled to provide

analog data for the dual laser drivers. The bus is updated

during the blanking period of the laser printer scan with a

data rate up to 2.5MHz. A “thermo-electric-cooler” control

circuit provides temperature control of the laser. Two on-chip

ESD diodes protect each laser.

A principle advantage of the Dual High Speed Laser Driver is

accomplished by managing the high currents externally with

discrete Power FETs and thereby not forcing large switching

currents to exist on the same IC substrate with the precision

control circuitry.

Features

• Dual High Speed Laser Driver with Data Rates up to

2.5MHz

• 0.5A to 2A Range of Constant Current Source Controlled

to 0.1% Full Scale

• Low Signal Transients with Controlled Constant Current

Switching

• Laser Optical Power Controlled to Better than 0.5%

• Thermoelectric Cooler (TEC) Circuit to Control

• Multiplexed Sample/Hold (S/H) Bus Interface

• Serial Diagnostic Bus with Multiplexed Output

• High Current ESD Diodes for Laser Diode Protection

Applications

• Dual Laser Printer Driver

Pinout

HIP9022 (PLCC)

TOP VIEW

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG. NO.

HIP9022AM

0 to 100

68 Ld PLCC

N68.95

68 67 66 65 64 63 62 61

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

18

19

20

21

22

23

24

25

26

27 28 29 30 31 32 33

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

CTC2-27K

LASERON2B

OC2

TECFB2

TECREF2

TECGDR2

TRES2

OT2

VUP1

SG_1

VLOW1

GNDA1

GNDD1

CC1

XTEN1+

VUP2

SG_2

VLOW2

GNDA2

GNDD2

CC2

XTEN2+

XTEN2-

CTC2-10K

XTEN1-

CTC1-10K

CTC1-27K

LASERON1B

OC1

TECFB1

TECREF1

TECGDR1

TRES1

Data Sheet

October 1998

File Number

4509.1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

http://www.intersil.com or 407-727-9207