DESCRIPTION

FEATURES

3.3V/5V 800MHz

PRECISION PECL AMPLIFIER

WITH LOW GAIN FEEDBACK

SY100EL16VO

FINAL

s 3.3V and 5V

s Guaranteed AC parameters over temperature:

•f

• < 200ps differential propagation delay (D to Q

• < 730ps differential propagation delay (D to Q

• < 250ps t

s Low gain feedback path Q

s Output enable

s V

s Wide temperature range: –40

s Available in 10-pin (3

×××××3mm) MSOP

PIN CONFIGURATION

BLOCK DIAGRAM

/EN

D

/D

D

LEN

Q

LATCH

1

Rev.: C

Amendment: /0

Issue Date:

February 2003

VBB

/EN

6

5

1

QFB

/QFB

D

/D

10 VCC

QHG

/QHG

VEE

9

8

7

2

3

4

Pin

Function

Q

Differential clock outputs for feedback path:

Nominal DC gain +10.

D, /D

PECL, LVPECL, ECL, LVECL differential inputs:

Internal 75k

Ω pull-down resistor.

V

BB

V

inputs: It provides the switching reference for the

input differential amplifier. When unused, it can be

left open. For single-ended PECL applications

connect V

capacitor to V

/EN

Enable: PECL compatible input control with internal

75k

Ω pull-down resistor. It controls the high-gain

output (Q

high. /EN is synchronous so that the outputs will only

be enabled/disabled when they are in the LOW state.

V

EE

Negative power supply: For ECL/LVECL operation,

connect to negative supply. For PECL/ LVPECL

operation, connect to GND.

Q

Differential high-gain outputs: Nominal DC gain is

greater than +200.

V

CC

Positive power supply: For ECL/LVECL operation,

connect to V

connect to either 3.3V or 5.0V. Bypass with 0.1

µF//

0.01

µF low ESR capacitors.

PIN NAMES

The SY100EL16VO is a differential receiver amplifier

optimized for crystal oscillator applications. The device includes

an additional low gain (+10V/V) output stage (Q

feedback applications common in crystal oscillator gain blocks.

The SY100EL16VO is fully differential, with a bandwidth

> 800MHz over temperature and voltage. For applications that

require output disable control, an Enable pin (/EN) will force

the differential output into a fixed logic state. The

SY100EL16VO also includes a V

single-ended or AC-coupled applications.

The SY100EL16VO PECL logic is 100k ECL compatible.

Operation is guaranteed over the –40

°C to +85°C temperature

range and 3.3V to 5V nominal supply voltage range.

/EN

QHG Out

/QHG Out

0

Data

/Data

1

Logic Low

Logic High

TRUTH TABLE