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:
V
th(high)
= 1.2 V at V+ = 4.3 V
• - 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+
IN
1
IN
2
D
2
S
1
D
1
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
S
2
IN
1
IN
2
D
2
S
1
D
1
S
2
IN
1
IN
2
D
2
S
1
D
1
S
2
