OPTO TECH PS035 Datasheet

35-BIT LED DISPLAY DRIVER

Part No: 80-08-00004

Type: PS035

FEATURES

■

CMOS technology

—

Continuous brightness control

—

Serial data input

—

No LOAD signal required

—

Optional external data enable and reset

—

Wide power supply operation (3.5V to 10V)

—
— 34 or 35 outputs, 20mA sink capability

— Alphanumeric capability

■ APPLICATIONS

— Products with alphanumeric LED displays such as digital clock, counter,

radio, multimeter, etc.

— Industrial control indicator or instrumentation readout
— Relay driver

■ GENERAL DESCRIPTIONS

The PS035 is designed to drive either 4 or 5-digit, common anode alphanumeric
LED displays with the added benefit of requiring minimal interface with the
display or data source. Data is transferred serially via 2 signals: clock and
serial data. Data transfer without the added inconvenience of external LOAD
and RESET signal is accomplished by using a format of a leading "1" followed
by the allowed 35 data bits. Display brightness is determined by control of
the output current for LED displays. Typically, the output current is 36 times
greater that current flowing into the B.C. terminal.

■ DIE SIZE AND PAD ASSIGNMENT

2650um

RESET

DATA IN

OUT35

OUT34

OUT33

OUT5VSS

OUT4OUT

OUT

3

OUT

2

OUT

1

B.C

.

VDD

CLK

ENB

OUT31

OUT30

OUT32

6

VSS

OUT8OUT10

OUT7OUT

OUT28

OUT29

OUT27

OUT12

9

OUT11

OUT13

OUT14

OUT26

OUT25

OUT15

OUT16

OUT17

VSS

OUT18

OUT19

OUT20

OUT21

OUT22

OUT23

OUT24

PAD NAM

VDD
VSS

RESET

B.C
CLK

DATA IN

ENB
OUT

E

Supply voltag
System ground
To reset all the internal registers
Brightness-control current inpu

.

Clock input to transfer serial data
Serial data input
To enable or disable serial data inpu
Constant sinking current output

n

DESCRIPTION
e

t

t

2740um

OPTO TECH

Since 1983

Microelectronics Business Division 2003.03 1 / 1

OPTO TECH CORPORATION

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