2

SY88943V

Micrel

General

The SY88943V is an integrated limiting amplifier intended

for high-frequency fiber-optic applications. The circuit

connects to typical transimpedance amplifiers found within

a fiber-optics link. The linear signal output from a

transimpedance amplifier can contain significant amounts

of noise, and may vary in amplitude over time. The

SY88943V limiting amplifier quantizes the signal and outputs

a voltage-limited waveform.

The EN pin allows the user to disable the output signal

without removing the input signal.

GENERAL DESCRIPTION

Symbol

Rating

Value

Unit

V

CC

Power Supply Voltage

0 to +7.0

V

D

Input Voltage

0 to V

CC

V

D

Output Voltage (with 50

Ω load)

V

V

EN

Input Voltage

0 to V

CC

V

SD

LVL

Input Voltage

0 to V

CC

V

V

REF

Output Voltage

V

V

T

A

Operating Temperature Range

–40 to +85

°C

T

store

Storage Temperature Range

–55 to +125

°C

NOTE:

1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. This is a stress rating only and functional operation is not implied

at conditions other than those detailed in the operational sections of this data sheet. Exposure to ABSOLUTE MAXIMUM RATlNG conditions for extended

periods may affect device reliability.

Pin

Type

Function

D

IN

Data Input

Data Input

/D

IN

Data Input

Inverting Data Input

SD

LVL

Input

SD Level Set

EN

TTL Input

Output Enable (Active High)

SD

TTL Output

Signal Detect

(Open Collector)

GND

Ground

Ground

/D

OUT

PECL Output

Inverting Data Output

D

OUT

PECL Output

Data Output

V

CC

Power Supply

Positive Power Supply

V

REF

Output

Reference Voltage Output for

SD Level Set (see Fig. 3)

PIN NAMES