Datasheet > FSA850

FSA850

更新时间： 2024-10-02 11:59:15

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		开关
页数	文件大小	规格书
3页	1276K
描述
Audio 3-Pole / 4-Pole MIC-GND Switch

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FSA850 数据手册

August 2012

FSA850

Audio 3-Pole / 4-Pole MIC-GND Switch

Description

Features

The FSA850 is a 3-pole or 4-pole audio jack microphone

GND switch for accessories with General-Purpose Input /

Output (GPIO) control signals. The FSA850 also has the

ability to perform 4-pole cross-point switching to support

Open Mobile Terminal Platform (OMTP) 4-pole headset

plugs. The architecture is designed to replace discrete

MOSFET solutions and allow common third-party

headphones to be used for listening to music or playing

video from mobile handsets, personal media players, and

portable peripheral devices.

Switch Type

V_CC

3-Pole/4-Pole MIC - GND

2.3 to 4.5 V

THD (MIC)

0.001% Typical

ESD

IEC 61000-4-2 (Air Gap)

IEC 61000-4-2 (Contact)

HBM (All Pins)

GNDnA/GNDnB to GND

Power to GND

15 kV

8 kV

3 kV

8 kV

10 kV

2 kV

. Supports 4-Pole OMTP Cross Point Switching for GND

CDM

Connection

Operating Temperature

R_ONMaximum (GND1n)

R_ONMaximum (SENSE)

-40°C to 85°C

0.08 Ω

. Integrates a MIC switch for 3- or 4-Pole Configuration

Headset Plugs

1 Ω

. Reduces “Pop and Click” Caused by Microphone Bias

Applications

Related Resources

. 3.5 mm and 2.5 mm Audio Jacks

. Cellular Phones, Smart Phones

. MP3 and PMP (Portable Media Player)

. For samples and questions, please contact:

Analog.Switch@fairchildsemi.com.

Typical Application

Figure 1. Typical Mobile Application

FSA850 • Rev. 1.0.0

www.fairchildsemi.com

12 3

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