ML4622CP datasheet(3/8 Pages) MICRO-LINEAR

Il numero della parte	ML4622CP

Spiegazioni elettronici	Fiber Optic Data Quantizer

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Produttore elettronici	MICRO-LINEAR [Micro Linear Corporation]

Homepage	http://www.microlinear.com

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ML4622, ML4624

PIN DESCRIPTION

NAME

FUNCTION

TTL LINK MON TTL Link Monitor output. Signal is

low when the VIN+, VIN– inputs

exceed the minimum threshold,

which is set by a voltage on the

VTHADJ pin. Signal is high when the

input signal level is below the

threshold. Capable of driving a 10mA

LED indicator. This pin can be tied to

CMP ENABLE.

CMP ENABLE

A low voltage at this TTL input pin

enables both the ECL and the TTL

outputs. A high TTL voltage disables

the comparator output with ECL+

high, ECL– low, and TTL OUT high.

VIN–

This input pin should be capacitively

coupled to the input source or to

filtered ground. (The input resistance

is approximately 1.6k

Ω.)

VIN+

This input pin should be capacitively

coupled to the input source or to

filtered ground. (The input resistance

is approximately 1.6k

Ω.)

ECL–

The ECL comparator negative output.

Has internal pull down resistor.

External pull downs are not required

unless driving a large capacitive

load.

ECL+

The ECL comparator positive output.

Has internal pull down resistor.

External pull downs are not required

unless driving a large capacitive

load.

GND TTL

The negative supply for the TTL

comparator stage. If the TTL output is

not necessary, connect GND TTL

to VCC.

NAME

FUNCTION

VCC TTL

The positive supply for the TTL

comparator stage. If the TTL output is

not necessary, connect VCC TTL to

VCC. (ML4624 only)

TTL OUT

TTL data output.

VDC

An external capacitor on this pin

integrates an error signal which nulls

the offset of the input amplifier. If the

DC feedback loop is not being used,

this pin should be connected to VREF.

CF2

A capacitor from this pin to CF1

controls the maximum bandwidth of

the amplifier.

CF1

Connect to CF2 through a capacitor.

GND

Negative supply. Connect to –5.2V

for ECL operation, or to ground for

TTL or raised ECL operation.

VTHADJ

This input pin sets the link monitor

threshold.

VREF

A 2.5V reference with respect to

GND.

CTIMER

A capacitor from this pin to VCC

determines the Link Monitor

response time.

VCC

Positive supply. Connect to ground

for negative ECL operation, or to 5V

for TTL or raised ECL operation.

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