DG2747/DG2748/DG2749
Vishay Siliconix
0.4-Ω, Low Voltage, Dual SPST Analog Switch
DESCRIPTION
FEATURES
The DG2747, DG2748, and DG2749 are high performance,
low on-resistance analog switches of dual SPST
configuration.
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Wide operation voltage range: 1.6 V to 4.3 V
Low on-resistance: 0.4 Ω typ. at 2.7 V
Low voltage logic threshold:
RoHS
COMPLIANT
Vth(high) = 1.4 V at V+ = 3 V
Built on Vishay Siliconix's sub-micro CMOS technology, the
DG2747/2748/2749 achieve switch on-resistance of 0.4 Ω at
2.7 V V+ and 0.3 Ω at 4.3 V V+. It provides 0.1 Ω flatness at
2.7 V V+, and total harmonic distortion to 0.03 % (frequency
range 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.
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- 100 dB crosstalk
> 250 mA latch up current per JESD78
Switch exceeds 7 kV ESD/HBM
BENEFITS
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Ultra small miniQFN8 package of 1.4 x 1.4 x 0.55 mm
It can switch signals with amplitudes of up to VCC to be
transmitted in either direction.
High fidelity audio switch
Reed relay replacement
Low power consumption
The select pins of the control logic can tolerate voltages
above V+. Logic high is 1.4 V to make it compatible with
many low voltage digital control circuits.
APPLICATIONS
Combining wide operation voltage, low power, high speed,
low on-resistance and small physical size, the DG2747/2748/
2749 are ideal for portable and battery powered applications
requiring high performance and efficient use of board space.
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Cellular phones
Portable media player
GPS
PCMCIA cards
Medical and test equipment
The DG2747/2748/2749 come in a small miniQFN-8lead
package (1.4 x 1.4 x 0.55 mm). As a committed partner to the
community and the environment, Vishay Siliconix
manufactures this product with the lead (Pb)-free device
terminations and is 100 % RoHS compliant.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG2747
miniQFN-8L
DG2748
miniQFN-8L
V+
V+
(Top View)
(Top View)
8
8
IN
1
2
3
7
6
5
IN
IN
1
2
3
7
6
5
IN
1
2
1
2
Dx
Ex
COM
1
COM
COM
2
2
COM
1
Pin 1
Pin 1
NO
NO
2
1
Device Marking: Dx for DG2747
x = Date/Lot Traceability Code
NC
NC
2
1
Device Marking: Ex for DG2748
x = Date/Lot Traceability Code
4
4
GND
GND
Top View
Top View
DG2749
miniQFN-8L
V+
8
(Top View)
IN
1
7
6
5
IN
1
2
Fx
COM
2
COM
1
2
Pin 1
NC
3
NC
1
2
Device Marking: Fx for DG2749
x = Date/Lot Traceability Code
4
GND
Top View
Document Number: 69977
S-80899-Rev. A, 21-Apr-08
www.vishay.com
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