Datasheet > QDFT-020-050

QDFT-020-050

更新时间： 2024-11-10 23:30:35

品牌	Logo	应用领域
其他 - ETC		光纤光电
页数	文件大小	规格书
4页	583K
描述
FIBER OPTIC RECEIVER

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QDFT-020-050 数据手册

QDFT Series

High-Sensitivity Transimpedance

pinFET Receiver

Fixed transimpedance circuit configuration

Hybrid construction

Industry-standard 14-pin dual-in-line package

Multimode fiber

Description

The Corning Lasertron QDFT pinFET module is a high-sensitivity detector and hybrid

preamplifier module designed for fiber-optic receivers operating at data rates up to and

exceeding 420 Mb/s at 1300 and 1550 nm wavelengths. The transimpedance circuitry

providesexcellentsensitivityandsuperiordynamicrange. Thehighsensitivityresultsfrom

use of an advanced GaInAs detector element having <10 nA leakage and a responsivity of

>0.8 A/W at 1300 and 1550 nm.

Sensitivitiesrangefrom-53dBmat18Mb/s, to-43dBmat140Mb/s. Opticaldynamic

range exceeds 25 dB. Operation requires only +5 V power supplies at modest bias currents.

The QDFT is packaged in a hermetically sealed, low-profile, 14-pin DIL package and is

pigtailed with multimode fiber.

Applications

The Corning Lasertron QDFT pinFET module consists of a low-capacitance,

front-illuminated planar detector element followed by a hybrid transimpedance amplifier.

Benefits of the transimpedance design of the QDFT pinFET module include excellent

dynamic range and ease of implementation. The QDFT pinFET requires no equalization

and is self-biasing. Simply by applying +5 V and -5 V supplies to the amplifier circuit, and

a -5 V supply to the detector element, the device is ready to receive an optical input through

a multimode fiber-optic pigtail.

TRANSIMPEDANCE DESIGN CIRCUITRY

The diagram to the left illustrates the fundamental operation of a QDFT pinFET. As

incident light illuminates the detector, a small signal current is produced which is directly

proportional to the amplitude of the incident light source (Pi) and the responsivity (R) of

the detector.

This simple relationship of R • Pi yields the output signal current (Is). This current is

thenconvertedtoavoltagewiththetransimpedanceresistor(Zt)andagainblockamplifier.

The resulting signal voltage (Vs) is simply derived from the quantities Is • Zt.

Pin Connections

Detector Bias (-5 V)

Case Ground

-5 V

Case Ground

Output

(Bias and interface circuit)

Case Ground

10 +5 V

11 NC

12 NC

13 NC

14 NC

Specifications and Ordering Information

QDFT Low-Bandwidth pinFET Receiver, page 39

QDFT Moderate-Bandwidth pinFET Receiver, page 40

QDFT High-Bandwidth pinFET Receiver, page 41

Corning Lasertron 2000 Product Guide

2000

12 3 4

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与QDFT-020-050相关器件

型号	品牌	获取价格	描述	数据表
QDFT020-051	ETC	获取价格	FIBER OPTIC RECEIVER
QDFT-020-052	ETC	获取价格	FIBER OPTIC RECEIVER
QDFT-025-001	ETC	获取价格	FIBER OPTIC RECEIVER
QDFT-025-004	ETC	获取价格	FIBER OPTIC RECEIVER
QDFT-025-050	ETC	获取价格	FIBER OPTIC RECEIVER
QDFT025-051	ETC	获取价格	FIBER OPTIC RECEIVER
QDFT-025-052	ETC	获取价格	FIBER OPTIC RECEIVER
QDFT-025-053	ETC	获取价格	FIBER OPTIC RECEIVER
QDFT025-054	ETC	获取价格	FIBER OPTIC RECEIVER
QDFT-025-055	ETC	获取价格	FIBER OPTIC RECEIVER

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