CMOS Low Voltage
2 Ω SPST Switches in SC70 Packages
ADG741/ADG742
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
1.8 V to 5.5 V single supply
2 Ω (typ) on resistance
Low on resistance flatness
−3 dB bandwidth >200 MHz
Rail-to-rail operation
ADG741
D
S
6-lead and 5-lead SC70 packages
Fast switching times
IN
tON 18 ns
SWITCH SHOWN FOR
A LOGIC 1 INPUT
tOFF 12 ns
Typical power consumption (<0.01 µW)
TTL-/CMOS-compatible
Figure 1.
APPLICATIONS
ADG742
S
Battery-powered systems
Communication systems
Sample-and-hold systems
Audio signal routing
D
IN
Video switching
Mechanical reed relay replacement
SWITCH SHOWN FOR
A LOGIC 1 INPUT
Figure 2.
PRODUCT HIGHLIGHTS
GENERAL DESCRIPTION
1. 1.8 V to 5.5 V Single-Supply Operation.
The ADG741/ADG742 are monolithic CMOS SPST switches.
These switches are designed using an advanced submicron
process that provides low power dissipation, yet offers high
switching speed, low on resistance, and low leakage currents. In
addition, −3 dB bandwidths of greater than 200 MHz can be
achieved.
The ADG741/ADG742 offer high performance, including
low on resistance and fast switching times. They are fully
specified and guaranteed with 3 V and 5 V supply rails.
2. Very Low RON (3 Ω max at 5 V, 5 Ω max at 3 V).
At 1.8 V operation, RON is typically 40 Ω over the
temperature range.
The ADG741/ADG742 can operate from a single 1.8 V to 5.5 V
supply, making them ideal for use in battery-powered instru-
ments and with Analog Devices’ new generation of DACs and
ADCs.
3. On Resistance Flatness RFLAT (ON) (1 Ω max).
4. −3 dB Bandwidth >200 MHz.
As shown in the Functional Block Diagrams, with a logic input
of 1 the switch of the ADG741 is closed, while that of the
ADG742 is open. Each switch conducts equally well in both
directions when on.
5. Low Power Dissipation.
CMOS construction ensures low power dissipation.
6. Fast tON/tOFF
.
7. Tiny 6-Lead and 5-Lead SC70 Packages.
The ADG741/ADG742 are available in 6-lead and 5-lead SC70
packages.
Rev. A
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