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PDF ADG749BKS Data sheet ( Hoja de datos )
| Número de pieza | ADG749BKS | |
| Descripción | CMOS Low Voltage 2.5ohm SPDT Switch In SC70 Package | |
| Fabricantes | Analog Devices | |
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CMOS Low Voltage
2.5 ⍀ SPDT Switch In SC70 Package
ADG749
FEATURES
1.8 V to 5.5 V Single Supply
5 ⍀ (Max) On Resistance
0.75 ⍀ (Typ) On-Resistance Flatness
–3 dB Bandwidth >200 MHz
Rail-to-Rail Operation
6-Lead SC70 Package
Fast Switching Times
tON 20 ns
tOFF 6 ns
Typical Power Consumption (<0.01 W)
TTL/CMOS-Compatible
APPLICATIONS
Battery-Powered Systems
Communication Systems
Sample 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.
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.
Each switch of the ADG749 conducts equally well in both
directions when on. The ADG749 exhibits break-before-make
switching action.
Because of the advanced submicron process, –3 dB bandwidths
of greater than 200 MHz can be achieved.
The ADG749 is available in a 6-lead SC70 package.
FUNCTIONAL BLOCK DIAGRAM
ADG749
S2
D
S1
IN
SWITCHES SHOWN FOR
A LOGIC "1" INPUT
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.
2. Very Low RON (5 Ω max at 5 V, 10 Ω max at 3 V). At 1.8 V
operation, RON is typically 40 Ω over the temperature range.
3. On-Resistance Flatness (RFLAT(ON)) (0.75 Ω typ).
4. –3 dB Bandwidth >200 MHz.
5. Low Power Dissipation. CMOS construction ensures low
power dissipation.
6. Fast tON/tOFF.
7. Tiny 6-lead SC70 package.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000
1 page  
Typical Performance Characteristics–ADG749
6.0
5.5
VDD = 2.7V
TA = 25؇C
5.0
4.5
4.0
3.5 VDD = 3.0V
3.0
VDD = 4.5V
2.5
2.0 VDD = 5.0V
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VD OR VS – DRAIN OR SOURCE VOLTAGE – V
TPC 1. On Resistance as a Function of VD (VS) Single
Supplies
10m
VDD = 5V
1m
100
10
1
100n
10n
1n
1
10 100 1k 10k 100k 1M 10M 100M
FREQUENCY – Hz
TPC 4. Supply Current vs. Input Switching Frequency
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
+85؇C
+25؇C
–40؇C
VDD = 3V
0.5 1.0 1.5
2.0 2.5
VD OR VS – DRAIN OR SOURCE VOLTAGE – V
3.0
TPC 2. On Resistance as a Function of VD (VS) for
Different Temperatures VDD = 3 V
6.0
5.5 VDD = 5V
5.0
4.5
4.0
3.5 +85؇C
3.0
2.5 +25؇C
2.0 –40؇C
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VD OR VS – DRAIN OR SOURCE VOLTAGE – V
TPC 3. On Resistance as a Function of VD (VS) for
Different Temperatures VDD = 5 V
–30
VDD = 5V, 3V
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
10k
100k
1M 10M
FREQUENCY – Hz
100M 0
TPC 5. Off Isolation vs. Frequency
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
10k
VDD = 5V, 3V
100k
1M 10M
FREQUENCY – Hz
100M 0
TPC 6. Crosstalk vs. Frequency
REV. 0
–5–
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