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PDF ADG774A Data sheet ( Hoja de datos )
| Número de pieza | ADG774A | |
| Descripción | Low Voltage 400 MHz Quad 2:1 Mux with 3 ns Switching Time | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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a
Low Voltage 400 MHz Quad 2:1 Mux
with 3 ns Switching Time
ADG774A
FEATURES
Bandwidth >400 MHz
Low Insertion Loss and On Resistance: 2.2 ⍀ Typical
On-Resistance Flatness 0.3 ⍀ Typical
Single 3 V/5 V Supply Operation
Very Low Distortion: <0.3%
Low Quiescent Supply Current (1 nA Typical)
Fast Switching Times
tON 6 ns
tOFF 3 ns
TTL/CMOS Compatible
FUNCTIONAL BLOCK DIAGRAM
S1A
S1B
S2A
S2B
S3A
S3B
S4A
S4B
ADG774A
1 OF 2
DECODER
D1
D2
D3
D4
EN IN
GENERAL DESCRIPTION
The ADG774A is a monolithic CMOS device comprising four
2:1 multiplexer/demultiplexers with high impedance outputs.
The CMOS process provides low power dissipation yet gives
high switching speed and low on resistance. The on-resistance
variation is typically less than 0.5 Ω over the input signal range.
The bandwidth of the ADG774A is typically 400 MHz and this,
coupled with low distortion (typically 0.3%), makes the part
suitable for switching of high-speed data signals.
The on-resistance profile is very flat over the full analog input
range ensuring excellent linearity and low distortion. CMOS con-
struction ensures ultralow power dissipation.
The ADG774A operates from a single 3.3 V/5 V supply and is
TTL logic compatible. The control logic for each switch is shown
in the Truth Table.
These switches conduct equally well in both directions when
ON. In the OFF condition, signal levels up to the supplies are
blocked. The ADG774A switches exhibit break-before-make
switching action.
PRODUCT HIGHLIGHTS
1. Wide bandwidth data rates >400 MHz.
2. Ultralow Power Dissipation.
3. Low leakage over temperature.
4. Break-Before-Make Switching.
This prevents channel shorting when the switches are config-
ured as a multiplexer.
5. Crosstalk is typically –70 dB @ 10 MHz.
6. Off isolation is typically –65 dB @ 10 MHz.
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 that
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
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2001
1 page  
Typical Performance Characteristics–ADG774A
20
TA = 25 C
16
12
VDD = 5.0V
8
VDD = 4.5V
4
VDD = 5.5V
0
012345
VS OR VD OR DRAIN SOURCE VOLTAGE – V
TPC 1. On Resistance as a Function
of VD (VS) for Various Single Supplies
20
TA = 25 C
16
VDD = 3.0V
12
8
VDD = 2.7V
4
VDD = 3.3V
0
0 0.5 1.0 1.5 2.0 2.5 3.0
VS OR VD OR DRAIN SOURCE VOLTAGE – V
TPC 2. On Resistance as a Function
of VD (VS) for Various Single Supplies
20
VDD = 5V
15
10
+85 C
5 +25 C
–40 C
0
012345
VS OR VD OR DRAIN SOURCE VOLTAGE – V
TPC 3. On Resistance as a Function
of VD (VS) for Different Temperatures
with 5 V Single Supplies
20
VDD = 3V
15
+85 C
10
+25 C
5
–40 C
0
0 0.5 1.0 1.5 2.0 2.5 3.0
VS OR VD OR DRAIN SOURCE VOLTAGE – V
TPC 4. On Resistance as a Function
of VD (VS) for Different Temperatures
with 3 V Single Supplies
0.025
0.020
0.015
VDD = 5.0V
VSS = 0V
TEMP = 25 C
0.010
0.005
0
ID (OFF)
–0.005
–0.010
IS (OFF)
IS, ID (ON)
–0.015
–0.020
–0.025
VS 0
123
VS – V(VD = VDD – VS)
TPC 5. Leakage Current as a
Function of VD (VS)
4
0.025
0.020
0.015
0.010
0.005
VDD = 3.0V
VSS = 0V
TEMP = 25 C
ID (OFF)
ID, IS (ON)
0
–0.005
–0.010
IS (OFF)
–0.015
–0.020
–0.025
0
VS
0.5 1.0 1.5 2.0 2.5
VS – V(VD = VDD – VS)
3.0
TPC 6. Leakage Current as a
Function of VD (VS)
0.05
0.04
0.03
0.02
0.01
0
VDD = 5.0V
VSS = 0V
TEMP = 25 C
VD = 3V/1V
VS = 1V/3V
ID, IS (ON)
ID (OFF)
–0.01
–0.02
IS (OFF)
–0.03
–0.04
–0.05
5
15 25 35 45 55 65 75 85
TEMPERATURE – C
TPC 7. Leakage Current as a Function
of Temperature
0.05
0.04
0.03
0.02
0.01
VDD = 3.0V
VSS = 0V
TEMP = 25 C
VD = 2V/1V
VS = 1V/2V
ID, IS (ON)
IS (OFF)
0
–0.01
–0.02
–0.03
ID (OFF)
–0.04
–0.05
5
15 25 35 45 55 65 75 85
TEMPERATURE – C
TPC 8. Leakage Current as a
Function of Temperature
0
–20
–40
–60
–80
–100
0.3
0.1 1 10 100
FREQUENCY – MHz
1000
TPC 9. Off Isolation vs. Frequency
REV. 0
–5–
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet ADG774A.PDF ] | |
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