Vishay Siliconix

DG2727, DG2728, DG2729

Document Number: 69049

S09-0557-Rev. A, 13-Apr-09

www.vishay.com

1

0.65-

Ω, Low Voltage, Negative Swing Capable,

Dual SPST Analog Switch

DESCRIPTION

The DG2727, DG2728, and DG2729 are 0.6

Ω dual SPST

analog switches. When Sx are used as signal input, these

devices support AC-coupled audio signals with single rail

power supply. Audio signals can swing below ground down

to V+ - 4.3 V.

Built on Vishay Siliconix’s sub-micro CMOS technology, the

DG2747/2748/2749 achieve 0.6

Ω on-resistance and 0.2 Ω

flatness at 2.7 V power supply. Its total harmonic distortion is

0.006 % (frequency ranges 20 Hz to 20 kHz).

It achieves - 72 dB off-isolation and - 100 dB crosstalk at

100 kHz. Its - 3 dB bandwidth is up to 78 MHz.

Select pin of control logic can tolerate voltage above power

supply up to 4.3 V. It has guaranteed 1.2 V logic high for the

power supply 2.7 V to 4.3 V range. This makes it compatible

with many low voltage digital control circuits.

Combining wide operation voltage, low power, high speed,

low on-resistance and small physical size, the DG2747,

DG2748, DG2749 are ideal for portable and battery powered

applications requiring high performance and efficient use of

board space

.

The

DG2747,

DG2748,

DG2749

come

in

a

small

miniQFN-8L package (1.4 mm x 1.4 mm x 0.55 mm) and

operate over - 40 °C to + 85 °C extended temperature range.

FEATURES

•

Halogen-free according to IEC 61249-2-21

definition

•

Wide operation voltage range: 1.6 V to 4.3 V

•

Low 0.6

Ω (typical at 2.7 V) on-resistance

•

Guaranteed logic high threshold:

•

- 82 dB crosstalk and - 76 dB off-isolation at 100 kHz

•

250 MHz, - 3 dB bandwidth

•

0.006 % total harmonic distortion

•

> 250 mA latch up current per JESD78

•

> 8 kV ESD/HBM per MIL-STD 883 (method 3015)

•

Compliant to RoHS directive 2002/95/EC

BENEFITS

•

Ultra small miniQFN-8L package of 1.4 mm x 1.4 mm

x 0.55 mm

•

High fidelity audio switch

•

Reed relay replacement

•

Low power consumption

APPLICATIONS

•

Cellular phones

•

GPS and portable media player

•

Audio and video signal routing

•

Modems

•

Hard drives and computer peripherals

•

Low voltage data-acquisition circuits

•

Medical and test equipment

FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION

Pin 1

Device Marking: Gx for DG2727

x = Date/Lot Traceability Code

Gx

(Top View)

DG2727

miniQFN-8L

Top View

2

6

8

4

1

3

7

5

GND

V+

Pin 1

Device Marking: Lx for DG2729

x = Date/Lot Traceability Code

Lx

(Top View)

DG2729

miniQFN-8L

Top View

2

6

8

4

1

3

7

5

V+

GND

Pin 1

Device Marking: Kx for DG2728

x = Date/Lot Traceability Code

Kx

(Top View)

2

6

8

4

1

3

7

5

GND

V+

DG2728

miniQFN-8L

Top View