Datasheet

REV. B
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a
750 MHz, 3.8 mA
10 ns Switching Multiplexers
AD8180/AD8182
FUNCTIONAL BLOCK DIAGRAM
1
2
3
4
8
7
6
5
AD8180
IN0
–V
S
OUT
ENABLE
SELECT
GND
IN1
+V
S
DECODER
+1
+1
1
2
3
4
14
13
12
11
AD8182
–V
S
OUT A
ENABLE A
SELECT A
5
6
7
10
9
8
SELECT B
OUT B
ENABLE B
DECODER
+1
+1
DECODER
+1
+1
IN0 A
GND
IN1 A
+V
S
IN1 B
GND
IN0 B
FEATURES
Fully Buffered Inputs and Outputs
Fast Channel Switching: 10 ns
High Speed
> 750 MHz Bandwidth (–3 dB)
750 V/␮s Slew Rate
Fast Settling Time of 14 ns to 0.1%
Low Power: 3.8 mA (AD8180), 6.8 mA (AD8182)
Excellent Video Specifications (R
L
≥ 1 k⍀)
Gain Flatness of 0.1 dB Beyond 100 MHz
0.02% Differential Gain Error
0.02ⴗ Differential Phase Error
Low Glitch: < 35 mV
Low All-Hostile Crosstalk of –80 dB @ 5 MHz
High “OFF” Isolation of –90 dB @ 5 MHz
Low Cost
Fast Output Disable Feature for Connecting Multiple Devices
APPLICATIONS
Pixel Switching for “Picture-In-Picture”
Switching in LCD and Plasma Displays
Video Switchers and Routers
PRODUCT DESCRIPTION
The AD8180 (single) and AD8182 (dual) are high speed 2-to-1
multiplexers. They offer –3 dB signal bandwidth greater than
750 MHz along with slew rate of 750 V/µs. With better than
80 dB of crosstalk and isolation, they are useful in many high
speed applications. The differential gain and differential phase
error of 0.02% and 0.02°, along with 0.1 dB flatness beyond
100 MHz make the AD8180 and AD8182 ideal for professional
video multiplexing. They offer 10 ns switching time making
them an excellent choice for pixel switching (picture-in-picture)
while consuming less than 3.8 mA (per 2:1 mux) on ±5 V sup-
ply voltages.
Both devices offer a high speed disable feature allowing the
output to be configured into a high impedance state. This al-
lows multiple outputs to be connected together for cascading
stages while the “OFF” channels do not load the output bus.
They operate on voltage supplies of ±5 V and are offered in 8-
and 14-lead plastic DIP and SOIC packages.
500mV
/DIV
5ns/DIV
Figure 1. AD8180/AD8182 Switching Characteristics
Table I. Truth Table
SELECT ENABLE OUTPUT
00 IN0
10 IN1
0 1 High Z
1 1 High Z
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