Vishay Siliconix
DG721, DG722, DG723
Document Number: 66586
S11-1799-Rev. F, 12-Sep-11
www.vishay.com
1
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
1.8 V to 5.5 V, 4 Dual SPST Switches
DESCRIPTION
The DG721, DG722 and DG723 are precision dual SPST
switches designed to operate from single 1.8 V to 5.5 V
power supply with low power dissipation. The DG721,
DG722 and DG723 can switch both analog and digital
signals within the power supply rail, and conduct well in both
directions.
Fabricated with advance submicron CMOS process, these
switches provide high precision low and flat ON resistance,
low leakage current, low parasitic capacitance, and low
charge injection.
The DG721, DG722 and DG723 contain two independent
Single Pole Single Throw (SPST) switches. Switch-1 and
switch-2 are normally open for the DG721 and normally
closed for the DG722. For the DG723, switch-1 is normally
open and switch-2 is normally closed with a Break-Before-
Make switching timing.
The DG721, DG722 and DG723 are the ideal switches for
use in low voltage instruments and healthcare devices, fitting
the circuits of low voltage ADC and DAC, analog front end
gain control, and signal path control.
As a committed partner to the community and the
environment, Vishay Siliconix manufactures this product with
lead (Pb)-free device termination. The TDFN8 package has
a nickel-palladium-gold device termination and is
represented by the lead (Pb)-free “-E4” suffix to the ordering
part number. The MSOP-8 package has tin device
termination and is represented by “-E3”. Both device
terminations meet all JEDEC standards for reflow and MSL
rating.
As a further sign of Vishay Siliconix's commitment, the
DG721, DG722 and D723 are fully RoHS compliant and
Halogen-free.
FEATURES
• Halogen-free according to IEC 61249-2-21
definition
• 1.8 V to 5.5 V single power supply
• Low and flat switch on resistance, 2.5 /typ.
• Low leakage and parasitic capacitance
• 366 MHz, - 3 dB bandwidth
• Latch-up current > 300 mA (JESD78)
• Space saving packages
2 mm x 2 mm TDFN8
MSOP8
• Over voltage tolerant TTL/CMOS compatible
• Compliant to RoHS Directive 2002/95/EC
APPLICATIONS
• Healthcare and medical devices
• Test instruments
• Portable meters
• Data acquisitions
• Control and automation
• PDAs and modems
• Communication systems
• Audio, video systems
• Mechanical reed relay replacement
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG721, TDFN-8
NO
1
V+
COM
1
IN
1
IN
2
COM
2
GND
NO
2
1
2
3
4
8
7
6
5
Top View
ADX
NO
2
COM
2
IN
1
V+
NO
1
COM
1
IN
2
GND
8
7
6
5
1
2
3
4
Bottom View
Device Marking for MSOP-8: 721
DG721, MSOP-8
NO
1
V+
COM
1
IN
1
IN
2
COM
2
ONDNG
2
1
2
3
4
8
7
6
5
Top View
Pin 1
Device Marking for TDFN-8: for DG721
x = Date/Lot Traceability Code
