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ADG774A Datasheet

Low Voltage 400 MHz Quad 2:1 Mux with 3 ns Switching Time

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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 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


Analog Devices Semiconductor Electronic Components Datasheet

ADG774A Datasheet

Low Voltage 400 MHz Quad 2:1 Mux with 3 ns Switching Time

No Preview Available !

ADG774A–SPECIFICATIONS
SINGLE SUPPLY1
(VDD = 5 V ؎ 10%, GND = 0 V. All specifications TMIN to TMAX unless otherwise noted.)
Parameter
ANALOG SWITCH
Analog Signal Range
On Resistance (RON)
On Resistance Match Between
Channels (RON)
On Resistance Flatness (RFLAT(ON))
B Version
25؇C
TMIN to
TMAX
0 to 2.5
2.2
3.5 4
0.15
0.5
0.3
0.6
Unit
V
typ
max
typ
max
typ
max
Test Conditions/Comments
VD = 0 V to 1 V; IS = –10 mA
VD = 0 V to 1 V; IS = –10 mA
VD = 0 V to 1 V; IS = –10 mA
LEAKAGE CURRENTS
Source OFF Leakage IS (OFF)
Drain OFF Leakage ID (OFF)
Channel ON Leakage ID, IS (ON)
± 0.001
± 0.1
± 0.001
± 0.1
± 0.001
± 0.1
± 0.25
± 0.25
± 0.25
nA typ
nA max
nA typ
nA max
nA typ
nA max
VD = 3 V, VS = 1 V; VD = 1 V, VS = 3 V;
Test Circuit 2
VD = 3 V, VS = 1 V; VD = 1 V, VS = 3 V;
Test Circuit 2
VD = VS = 3 V; VD = VS = 1 V; Test Circuit 3
DIGITAL INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current
IINL or IINH
CIN, Digital Input Capacitance
DYNAMIC CHARACTERISTICS2
tON, tON (EN)
tOFF, tOFF (EN)
Break-Before-Make Time Delay, tD
Off Isolation
Channel-to-Channel Crosstalk
Bandwidth –3 dB
Distortion
Charge Injection
CS (OFF)
CD (OFF)
CD, CS (ON)
POWER REQUIREMENTS
IDD
0.001
0.001
2.4
0.8
± 0.1
3
6
12
3
6
3
1
–65
–70
400
0.3
6
5
7.5
12
1
V min
V max
µA typ
µA max
pF typ
ns typ
ns max
ns typ
ns max
ns typ
ns min
dB typ
dB typ
MHz typ
% typ
pC typ
pF typ
pF typ
pF typ
µA max
µA typ
VIN = VINL or VINH
CL = 35 pF, RL = 50 Ω;
VS = 2 V; Test Circuit 4
CL = 35 pF, RL = 50 Ω;
VS = 2 V; Test Circuit 4
CL = 35 pF, RL = 50 Ω;
VS1 = VS2 = 2 V; Test Circuit 5
f = 10 MHz; RL = 50 Ω; Test Circuit 7
f = 10 MHz; RL = 50 Ω; Test Circuit 8
Test Circuit 6, RL = 50 Ω;
RL = 100
CL = 1 nF; Test Circuit 9, VS = 0 V
VDD = 5.5 V
Digital Inputs = 0 V or VDD
NOTES
1Temperature ranges are as follows: B Version, –40°C to +85°C.
2Guaranteed by design, not subject to production test.
Specifications subject to change without notice.
–2– REV. 0


Part Number ADG774A
Description Low Voltage 400 MHz Quad 2:1 Mux with 3 ns Switching Time
Maker Analog Devices
Total Page 8 Pages
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