June. 2009. Revision 1.3

MagnaChip Semiconductor Ltd.

1

Ordering Information

Typical Application

Part Number

Top

Marking

Ambient

Temperature Range

Package [mm]

RoHS Status

MSI2021QH

S2U

-40℃ to +85℃

1.4mm x 1.8mm x 0.5mm, 10 leads QFN

Halogen-Free

MSI2021

0.4Ω Dual SPDT Analog Switch with Negative Swing Feature

General Description

The MSI2021 is a dual single-pole double-throw (dual

SPDT) analog device aimed for analog signals

switching applications in various portable electrical

devices. It is especially designed for negative stereo

audio signals switching applications in mobile phones.

The MSI2021 features very low on-channel resistance

allowing little attenuation and distortion during bi-

directional audio signal routing. High crosstalk and off-

isolation result in minimum noise interference with

good signal integrity. Also the device features very low

current consumption during standby and idle mode

making longer battery operation in portable devices.

The MSI2021 is available in ultra small Halogen-Free

10 leads 1.4 x 1.8 QFN package and can operate over

-40°C to +85°C ambient temperature range. For more

detailed information, please contact your local

MagnaChip sales office in world-wide or visit

MagnaChip’s website at www.magnachip.com.

Features

±

8kV Human Body Model (HBM) ESD

protection on all pins

-3dB bandwidth : >50MHz (typical)

Low supply current in standby mode (<1

μA)

and under wide control voltage range

tolerate up to 4.3V

supply voltage condition

Halogen-Free 10 leads 1.4mm x 1.8mm QFN

package

Applications

Analog Signal Switching Block

Negative Stereo Audio Switching

Switching application in portable devices (Cell

phone, PDAs, Notebook Computers)

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MSI2021

RECEIVER

A0

A1

B0

B1

COMA

COMB

1

AMP

2

AMP