CMOS 1.8 V to 5.5 V, 2.5 Ω
2:1 Mux/SPDT Switch in SC70 Package
Data Sheet
ADG749
FEATURES
FUNCTIONAL BLOCK DIAGRAM
1.8 V to 5.5 V single supply
5 Ω (maximum) on resistance
0.75 Ω (typical) on resistance flatness
Automotive temperature range: −40°C to +125°C
–3 dB bandwidth > 200 MHz
Rail-to-rail operation
ADG749
S2
D
S1
IN
6-lead SC70 package
Fast switching times
SWITCH SHOWN FOR
A LOGIC 1 INPUT
tON = 12 ns
Figure 1.
tOFF = 6 ns
Typical power consumption (< 0.01 μW)
TTL/CMOS compatible
APPLICATIONS
Battery-powered systems
Communication systems
Sample-and-hold systems
Audio signal routing
Video switching
Mechanical reed relay replacement
GENERAL DESCRIPTION
The ADG749 is a monolithic CMOS SPDT switch. This switch
is designed on a submicron process that provides low power
dissipation yet gives high switching speed, low on resistance,
and low leakage currents.
PRODUCT HIGHLIGHTS
1. 1.8 V to 5.5 V Single-Supply Operation. The ADG749
offers high performance, including low on resistance and
fast switching times, and is fully specified and guaranteed
with 3 V and 5 V supply rails.
The ADG749 can operate from a single-supply range of 1.8 V to
5.5 V, making it ideal for use in battery-powered instruments
and with the new generation of DACs and ADCs from Analog
Devices, Inc.
2. Very Low RON (5 Ω Maximum at 5 V and 10 Ω Maximum
at 3 V). At 1.8 V operation, RON is typically 40 Ω over the
temperature range.
Each switch of the ADG749 conducts equally well in both
directions when on. The ADG749 exhibits break-before-make
switching action.
3. Automotive Temperature Range: −40°C to +125°C.
4. On Resistance Flatness (RFLAT(ON)) (0.75 Ω typical).
5. −3 dB Bandwidth > 200 MHz.
Because of the advanced submicron process, −3 dB bandwidths
of greater than 200 MHz can be achieved.
6. Low Power Dissipation. CMOS construction ensures low
power dissipation.
The ADG749 is available in a 6-lead SC70 package.
7. Fast tON/tOFF
.
8. Tiny, 6-lead SC70 Package.
Rev. C
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