700 MHz, 5 mA
4-to-1 Video Multiplexer
a
AD8184
FEATURES
FUNCTIO NAL BLO CK D IAGRAM
Single and Dual 2-to-1 Also Available (AD8180 and AD8182)
Fully Buffered Inputs and Outputs
Fast Channel Sw itching: 10 ns
High Speed
> 700 MHz Bandw idth (–3 dB)
> 750 V/ s Slew Rate
+1
+1
+V
S
IN0
GND
IN1
1
2
3
4
5
6
7
14
13
12
11
10
9
A0
A1
DECODER
GND
IN2
ENABLE
Fast Settling Tim e of 15 ns to 0.1%
OUT
+1
Excellent Video Specifications (RL > 2 k
Gain Flatness of 0.1 dB of 75 MHz
⍀
)
GND
NC
0.01% Differential Gain Error, RL = 10 k
0.01؇ Differential Phase Error, RL = 10 k
Low Pow er: 4.4 m A
⍀
IN3
–V
S
8
+1
AD8184
NC = NO CONNECT
⍀
Low Glitch: < 25 m V
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
Table I. Truth Table
APPLICATIONS
Pin Com patible w ith HA4314* and GX4314*
Video Sw itchers and Routers
Pixel Sw itching for “Picture-In-Picture”
Sw itching in LCD and Plasm a Displays
ENABLE
A1
A0
O UTP UT
0
0
0
0
1
0
0
1
1
X
0
1
0
1
X
IN0
IN1
IN2
IN3
High Z
P RO D UCT D ESCRIP TIO N
5
4
T he 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/µs.
With 95 dB of crosstalk and 115 dB isolation, it is useful in
many high speed applications. T he 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.
V
= 50mVrms
IN
R
= 5kΩ
L
3
2
1
0
–1
–2
–3
–4
–5
T he AD8184 offers a high speed disable feature allowing the
output to be put into a high impedance state. T his 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.
1M
10M
100M
1G
FREQUENCY – Hz
Figure 1. Sm all Signal Frequency Response
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REV. 0
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© Analog Devices, Inc., 1997