Datasheet > L8402

L8402

更新时间： 2024-11-22 14:55:39

品牌	Logo	应用领域
友顺 - UTC		/
页数	文件大小	规格书
7页	248K
描述
low power 4 stage fet bias controller

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L8402 数据手册

UNISONIC TECHNOLOGIES CO., LTD

L8402

LINEAR INTEGRATED CIRCUIT

LOW POWER 4 STAGE FET BIAS

CONTROLLER



DESCRIPTION

The UTC L8402 is designed to bias the MOSFETs that are

commonly used in LNBs that can implies minimum external

components requires.

The UTC L8402, provide four FETs bias control respectively. By

adjusting two external resistors, it can change the FET’s bias current

to optimize the satellite receiver front end block performances.

As an additional feature the Rcal pins can also be used as logic

inputs to disable pairs of FETs as part of a power management

scheme or simply an alternative to LNA switching. Driven to a logic

high (>3.0V), the inputs disable their associated FET bias stages by

switching gate feeds to 2.5V and drain feeds open circuit.

It generates the required negative voltage to bias the gate of FETs,

and internally provides protection circuit that can protect the FET

devices during supply voltage transient. So it is very popular in satellite

receiver front end block.



FEATURES

* Can Bias up to 4 FETs

* Wide supply voltage range: 3V~8V

* Low quiescent supply current, 1mA typical

* FET drain voltages set at 2.0V

* Adjustable FET device operating current

* FET drain voltages and currents held stable over temperature and

V_CCvariations

* Built in FET device protection circuit

* Low external component count



ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

L8402L-R16-R

Halogen Free

L8402G-R16-R

SSOP-16

Tape Reel

L8402L-Q16-3030-R

L8402G-Q16-3030-R

QFN-16(3×3)

www.unisonic.com.tw

1 of 7

QW-R123-022.D

12 3 4 5 6 7

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