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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.
a
700 MHz, 5 mA
4-to-1 Video Multiplexer
AD8184
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
Analog Devices, Inc., 1997
PRODUCT DESCRIPTION
The AD8184 is a high speed 4-to-1 multiplexer. It offers –3 dB
signal bandwidth of 700 MHz along with a slew rate of 750 V/
s.
With 95 dB of crosstalk and 115 dB isolation, it is useful in
many high speed applications. The differential gain and differ-
ential phase error of 0.01% and 0.01
°, along with 0.1 dB flatness
of 75 MHz, make AD8184 ideal for professional video multi-
plexing. It offers 10 ns switching time, making it an excellent
choice for pixel switching (picture-in-picture) while consuming
less than 4.5 mA on
±5 V supply voltage.
The AD8184 offers a high speed disable feature allowing the
output to be put into a high impedance state. This allows mul-
tiple outputs to be connected together for cascading stages while
the “OFF” channels do not load the output bus. It operates on
voltage supplies of
±5 V and is offered in 14-lead PDIP and
SOIC packages.
*All trademarks are the property of their respective holders.
Table I. Truth Table
ENABLE
A1
A0
OUTPUT
0
IN0
0
1
IN1
0
1
0
IN2
0
1
IN3
1
X
High Z
FEATURES
Single and Dual 2-to-1 Also Available (AD8180 and AD8182)
Fully Buffered Inputs and Outputs
Fast Channel Switching: 10 ns
High Speed
> 700 MHz Bandwidth (–3 dB)
> 750 V/ s Slew Rate
Fast Settling Time of 15 ns to 0.1%
Excellent Video Specifications (RL > 2 k )
Gain Flatness of 0.1 dB of 75 MHz
0.01% Differential Gain Error, RL = 10 k
0.01 Differential Phase Error, RL = 10 k
Low Power: 4.4 mA
Low Glitch: < 25 mV
Low All-Hostile Crosstalk of –95 dB @ 5 MHz
High “OFF” Isolation of –115 dB @ 5 MHz
Low Cost
Fast Output Disable Feature for Connecting Multiple Devices
APPLICATIONS
Pin Compatible with HA4314* and GX4314*
Video Switchers and Routers
Pixel Switching for “Picture-In-Picture”
Switching in LCD and Plasma Displays
FUNCTIONAL BLOCK DIAGRAM
1
2
3
4
14
13
12
11
AD8184
ENABLE
A1
5
6
7
10
9
8
OUT
DECODER
+1
A0
+VS
NC
–VS
NC = NO CONNECT
IN0
GND
IN1
IN2
GND
IN3
GND
FREQUENCY – Hz
1M
NORMALIZED
OUTPUT
–
dB
10M
100M
1G
5
4
–5
3
2
1
0
–1
–2
–3
–4
VIN = 50mVrms
RL = 5k
Figure 1. Small Signal Frequency Response