350 MHz Single-Supply (5 V)
Triple 2:1 Multiplexers
AD8188/AD8189
FUNCTIONAL BLOCK DIAGRAM
FEATURES
Fully buffered inputs and outputs
Fast channel-to-channel switching: 4 ns
Single-supply operation (5 V)
High speed
350 MHz bandwidth (−3 dB) @ 200 mV p-p
300 MHz bandwidth (−3 dB) @ 2 V p-p
Slew rate: 1000 V/μs
Fast settling time: 7 ns to 0.1%
Low current: 19 mA/20 mA
Excellent video specifications: load resistor (RL) = 150 Ω
Differential gain error: 0.05%
Differential phase error: 0.05°
Low glitch
IN0A
1
2
3
4
5
6
7
8
9
24 V
CC
D
23 OE
LOGIC
GND
IN1A
22 SEL A/B
SELECT
V
21 V
REF
CC
20 OUT0
19
ENABLE
0
1
2
IN2A
V
V
CC
EE
18 OUT1
17
V
EE
IN2B
V
CC
16 OUT2
15
V
EE
IN1B 10
11
V
EE
V
14 DV
EE
CC
AD8188/AD8189
IN0B 12
13
V
CC
Figure 1.
All hostile crosstalk
−84 dB @ 5 MHz
−52 dB @ 100 MHz
High off isolation: −95 dB @ 5 MHz
Low cost
Fast, high impedance disable feature for connecting
multiple outputs
Logic-shifted outputs
APPLICATIONS
Switching RGB in LCD and plasma displays
RGB video switchers and routers
GENERAL DESCRIPTION
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
The AD8188 (G = 1) and AD8189 (G = 2) are high speed,
single-supply, triple 2-to-1 multiplexers. They offer −3 dB small
signal bandwidth of 350 MHz and −3 dB large signal bandwidth
of 300 MHz, along with a slew rate in excess of 1000 V/μs. With
−84 dB of all hostile crosstalk and −95 dB off isolation, the parts
are well suited for many high speed applications. The
differential gain and differential phase error of 0.05% and 0.05°
respectively, along with 0.1 dB flatness to 70 MHz, make the
AD8188 and AD8189 ideal for professional and component
video multiplexing. The parts offer 4 ns switching time, making
them an excellent choice for switching video signals, while
consuming less than 20 mA on a single 5 V supply (100 mW).
Both devices have a high speed disable feature that sets the
outputs into a high impedance state. This allows the building of
larger input arrays while minimizing off-channel output
loading. The devices are offered in a 24-lead TSSOP.
INPUT
OUTPUT
–0.5
–1.0
0
5
10
15
20
25
TIME (ns)
Figure 2. AD8189 Video Amplitude Pulse Response,
VOUT = 1.4 V p-p, RL = 150 Ω
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. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2006 Analog Devices, Inc. All rights reserved.