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

OUT

ENABLE

SELECT

GND

IN1

DECODER

+1

+1

1

2

3

4

14

13

12

11

AD8182

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

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)

Gain Flatness of 0.1 dB Beyond 100 MHz

0.02% Differential Gain Error

0.02 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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Tel: 781/329-4700

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Fax: 781/326-8703

© Analog Devices, Inc., 2000