Datasheet > SY88903V_06

SY88903V_06

更新时间： 2024-11-09 04:30:07

品牌	Logo	应用领域
麦瑞 - MICREL		放大器
页数	文件大小	规格书
6页	465K
描述
5V/3.3V 1.25Gbps HIGH-SPEED LIMITING POST AMPLIFIER

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SY88903V_06 数据手册

Micrel, Inc.

SY88903V

5V/3.3V 1.25Gbps HIGH-SPEED

LIMITING POST AMPLIFIER

FEATURES

DESCRIPTION

■ 3.3V and 5V power supply option

■ Up to 1.25Gbps operation

■ Low noise

The SY88903V limiting post amplifier with its high gain

and wide bandwidth is ideal for use as a post amplifier in

fiber optic receivers with data rates up to 1.25Gbps. Signals

as small as 5mV can be amplified to drive devices with

■ Chatter-free LOS generation

■ Open collector TTL LOS output

■ TTL /EN Input

PECL inputs. The SY88903V generates a chatter-free, Loss-

-of-Signal (LOS), open-collector TTL output.

The SY88903V 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

SY88903V limiting amplifier quantizes the signal and outputs

a voltage-limited waveform.

■ Differential PECL inputs for data

■ Single power supply

■ Designed for use with laser diode driver and

controller

■ Available in a tiny 10-pin (3mm × 3mm) MSOP

The /EN pin allows the user to disable the output signal

without removing the input signal.

The SY88903V incorporates a programmable level detect

function to identify when the input signal has been lost.

This information can be fed back to the /EN input of the

device to maintain stability under loss of signal condition.

The sensitivity of the level detection can be adjusted using

APPLICATIONS

■ 1.25Gbps Gigabit Ethernet

■ 531Mbps and 1062Mbps Fibre Channel

■ 622Mbps SONET

LOS . The LOS

resistor divider between V and V

voltage can be set by connecting a

as shown in Figure

REF

LVL

■ Gigabit Interface Converter

3. “Typical Characteristics” show the relationship between

input level sensitivity and the voltage set on LOS

LVL

The LOS output is a TTL open-collector output that

requires a pull-up resistor for proper operation, Figure 1.

V_CC

BLOCK DIAGRAM

SY88903V

2.5kΩ

LOS

OUT

Limiting

Amplifer

ECL

Buffer

Figure 1. LOS Output with Desired Rise Time

All support documentation can be found on Micrel’s web

site at www.micrel.com.

REF

Enable

Level

Detect

GND

LOS

LOSLVL

Rev.: E

Amendment: /0

M9999-091406

hbwhelp@micrel.com or (408) 955-1690

Issue Date: September2006

12 3 4 5 6

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与SY88903V_06相关器件

型号	品牌	获取价格	描述	数据表
SY88903V_07	MICREL	获取价格	5V/3.3V 1.25Gbps HIGH-SPEED LIMITING POST AMPLIFIER
SY88903VKC	MICREL	获取价格	5V/3.3V 1.25Gbps HIGH-SPEED LIMITING POST AMPLIFIER
SY88903VKCTR	MICROCHIP	获取价格	ATM/SONET/SDH SUPPORT CIRCUIT, PDSO10
SY88903VKCTR	MICREL	获取价格	5V/3.3V 1.25Gbps HIGH-SPEED LIMITING POST AMPLIFIER
SY88903VKG	MICREL	获取价格	5V/3.3V 1.25Gbps HIGH-SPEED LIMITING POST AMPLIFIER
SY88903VKGTR	MICREL	获取价格	5V/3.3V 1.25Gbps HIGH-SPEED LIMITING POST AMPLIFIER
SY88903VKGTR	MICROCHIP	获取价格	ATM/SONET/SDH SUPPORT CIRCUIT, PDSO10
SY88904	MICREL	获取价格	FIBER OPTIC MODULE CONTROLLER WITH APC
SY88904KC	MICREL	获取价格	FIBER OPTIC MODULE CONTROLLER WITH APC
SY88904KC	MICROCHIP	获取价格	SPECIALTY TELECOM CIRCUIT, PDSO16

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