ML4632CS Просмотр технического описания (PDF) - Micro Linear Corporation

Номер в каталоге

Компоненты Описание

Список матч

ML4632CS

Fiber Optic LED Driver

Micro Linear Corporation 

ML4632

PIN CONFIGURATION

ML4632

14-Pin PDIP (P14)

ECLN

VBIAS

LED

GND

RTSET

RPK

PEAK

1

14

2

13

3

12

4

11

5

10

6

9

7

8

TOP VIEW

ECLP

TTL

PTAT

DRV

VREF

IOFF

VCC

ML4632

16-Pin Wide SOIC (S16W)

ECLN

VBIAS

LED

GND

RTSET

RPK

PEAK

NC

1

16

2

15

3

14

4

13

5

12

6

11

7

10

8

9

TOP VIEW

ECLP

TTL

PTAT

DRV

VREF

IOFF

VCC

NC

PIN DESCRIPTION

NAME

ECLN

VBIAS

LED

GND

RTSET

RPK

PEAK

FUNCTION

Negative ECL data input. Tie to VBIAS for

single ended ECL operation or when ECLP is

used as an enable. Tie to ground during TTL

only operation.

BIAS voltage for single ended ECL operation.

Fiber optic LED drive pin. Connect the LED

between this pin and VCC.

Negative power supply. The pin should be

tied to the grounded side of RTSET to improve

output accuracy and avoid a ground loop.

Output current programming pin. Connect a

resistor of value VDRV/ILED from this pin to

ground to set the high LED output current.

Peaking circuit bias pin. Connect a resistor of

value VDRV/IPEAK from this pin to ground

when using the peaking circuit. Leave open

circuited when peaking is not used.

Peaking circuit output pin. When using

peaking, connect this pin to VCC through a

resistor of value RRPK. Then connect a

capacitor from this pin to the LED cathode.

When peaking is not used, open circuit RPK.

NAME

VCC

IOFF

VREF

DRV

PTAT

TTL

ECLP

FUNCTION

Positive power supply. +5 volts.

Connect a resistor from this pin to VCC to

increase the off current to the LED, i.e. 4.3KΩ

for 1mA. With this pin open, the default IOFF

current is between 0.5–1.0mA.

A constant 1.2V reference output used to set

up DRV.

A DC input that sets the positive swing on

RTSET and the high level output current to

the LED.

Proportional to Absolute Temperature. A 1.0V

reference at 25°C that moves proportional to

absolute temperature, also used to set up

DRV. (See figure 1)

TTL data input. Can also be used as an enable

during ECL operation. TTL = High (enabled),

TTL = Low (disabled).

Positive ECL data input controls signal to the

LED. Tie to VBIAS during TTL only operation

or use as an enable.

2

Share Link: