a
FEATURES
Fully Buffered Inputs and Outputs
Fast Channel-to-Channel Switching: 15 ns
High Speed
380 MHz Bandwidth (–3 dB) 200 mV p-p
310 MHz Bandwidth (–3 dB) 2 V p-p
1000 V/ s Slew Rate G = +1, 2 V Step
1150 V/ s Slew Rate G = +2, 2 V Step
Fast Settling Time of 15 ns to 0.1%
Low Power: 25 mA
Excellent Video Specifications (R
L
= 150 )
Gain Flatness of 0.1 dB to 90 MHz
0.01% Differential Gain Error
0.02 Differential Phase Error
Low All-Hostile Crosstalk –84 dB @ 5 MHz
–54 dB @ 50 MHz
Low Channel-to-Channel Crosstalk –56 dB @ 100 MHz
High “OFF” Isolation of –100 dB @ 10 MHz
Low Cost
Fast High Impedance Output Disable Feature for
Connecting Multiple Devices
APPLICATIONS
Pixel Switching for “Picture-In-Picture”
Switching RGB in LCD and Plasma Displays
RGB Video Switchers and Routers
IN0A 1
DGND 2
IN1A 3
GND 4
IN2A 5
V
CC
6
V
EE
7
IN2B 8
GND 9
IN1B 10
GND 11
IN0B 12
380 MHz, 25 mA,
Triple 2:1 Multiplexers
AD8183/AD8185
FUNCTIONAL BLOCK DIAGRAM
AD8183/AD8185
SELECT
24 V
CC
23
OE
22 SEL
A/B
DISABLE
0
21 V
CC
20 OUT0
19 V
EE
1
18 OUT1
17 V
CC
2
16 OUT2
15 V
EE
14 DVCC
13 V
CC
Table I. Truth Table
SEL
A/B
0
1
0
1
OE
0
0
1
1
OUT
INA
INB
High Z
High Z
PRODUCT DESCRIPTION
The AD8183 (G = +1) and AD8185 (G = +2) are high speed
triple 2:1 multiplexers. They offer –3 dB signal bandwidth up to
380 MHz, along with slew rate of 1000 V/μs. With better than
–90 dB of channel-to-channel crosstalk and isolation at 10 MHz,
they are useful in many high-speed applications. The differential
gain and differential phase errors of 0.01% and 0.02° respectively,
along with 0.1 dB flatness to 90 MHz make the AD8183 and
AD8185 ideal for professional video and RGB multiplexing. They
offer 15 ns channel-to-channel switching time, making them
an excellent choice for switching video signals, while consuming
less than 25 mA on
±
5 V supply voltages.
Both devices offer a high speed disable feature that can set the
output into a high impedance state. This allows the building of
larger input arrays while minimizing “OFF” channel output
loading. They operate on voltage supplies of
±
5 V and are offered
in a 24-lead TSSOP package.
V
O
= 1.4V STEP
1.4V R
L
= 150
1.2V
1.0V
0.8V
0.6V
0.4V
0.2V
0.0V
200mV
2ns
Figure 1. AD8185 Pulse Response; R
L
= 150
Ω
Rev. A
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Technical Support
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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 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 registered trademarks are the property of their respective owners.
AD8183/AD8185–SPECIFICATIONS
(T = 25 C, V =
A
S
5 V, R
L
= 1 k
Min
250/300
200/250
250/300
200/250
unless otherwise noted)
Typ
590/360
380/320
530/350
310/300
90/60
100/160
1000/1150
15
0.01
0.02
–84/–72
–54/–50
–56/–54
–10
28/15
0.20
5
10
1
15
6/10
0.25/0.85
25/40
25/40
10/15
Max
Unit
MHz
MHz
MHz
MHz
MHz
MHz
V/μs
ns
%
Degrees
dB
dB
dB
dB
nV/√Hz
%
mV
mV
mV
μV/°C
μA
MΩ
pF
pF
V
V
V
mA
Ω
MΩ
pF
±
5.5
66/72
56/68
25
3/7
25
30
5/10
V
dB
dB
mA
mA
mA
Parameter
DYNAMIC PERFORMANCE
–3 dB Bandwidth (Small Signal)
–3 dB Bandwidth (Small Signal)
–3 dB Bandwidth (Large Signal)
–3 dB Bandwidth (Large Si
0.1 dB Bandwidth
Slew Rate
Settling Time to 0.1%
NOISE/DISTORTION PERFORMANCE
Differential Gain
Differential Phase
All-Hostile Crosstalk, RTI
Channel-to-Channel Crosstalk, RTI
OFF Isolation
Voltage Noise, RTI
DC PERFORMANCE
Voltage Gain Error
Input Offset Voltage, RTI
Input Offset Voltage Matching, RTI
Input Offset Drift, RTI
Input Bias Current
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Voltage Range
OUTPUT CHARACTERISTICS
Output Voltage Swing
Short Circuit Current
Output Resistance
Output Capacitance
POWER SUPPLY
Operating Range
Power Supply Rejection Ratio
Power Supply Rejection Ratio
Quiescent Current
Condition
V
OUT
= 200 mV p-p
V
OUT
= 200 mV p-p, R
L
= 150
Ω
V
OUT
= 2 V p-p
V
OUT
= 2 V p-p, R
L
= 150
Ω
V
OUT
= 200 mV p-p
V
OUT
= 200 mV p-p, R
L
= 150
Ω
2 V Step
2 V Step, R
L
= 150
Ω
NTSC or PAL, 150
Ω
NTSC or PAL, 150
Ω
ƒ = 5 MHz, AD8185: R
L
= 150
Ω
ƒ = 50 MHz, AD8185: R
L
= 150
Ω
ƒ = 100 MHz, AD8185: R
L
= 150
Ω
ƒ = MHz, R
L
= 150
Ω
ƒ = 10 kHz to 30 MHz
No Load
T
MIN
to T
MAX
Channel-to-Channel
4/1
Channel Enabled
Channel Disabled
8/5
1
1.5
±
3.0/± 1.5
±
3.25
±
2.95
60
0.3
8/3
4/6.5
R
L
= 1 kΩ
R
L
= 150
Ω
Enabled
Disabled
Disabled
±
2.90
±
2.65
4/1
+PSRR +V
S
= +4.5 V to +5.5 V, –V
S
= –5 V
–PSRR –V
S
= –4.5 V to –5.5 V, +V
S
= +5 V
All Channels “ON”
All Channels “OFF”
T
MIN
to T
MAX
; All Channels “ON”
Channel-to-Channel
IN0 = +1 V, IN1 = –1 V
INPUT = 1 V
INPUT = 1 V
All Inputs Grounded
SEL
A/B
and
OE
Inputs
SEL
A/B
and
OE
Inputs
SEL
A/B
and
OE
= 4 V
SEL
A/B
and
OE
= 0.4 V
Operating (Still Air)
Operating (Still Air)
Operating
±
4.5
58/62
52/60
SWITCHING CHARACTERISTICS
Switch Time
50% Logic to 50% Output Settling
ENABLE
to Channel ON Time
50% Logic to 50% Output Settling
ENABLE
to Channel OFF Time
50% Logic to 50% Output Settling
Channel Switching Transient (Glitch)
DIGITAL INPUTS
Logic “1” Voltage
Logic “0” Voltage
Logic “1” Input Current
Logic “0” Input Current
OPERATING TEMPERATURE RANGE
Temperature Range
θ
JA
θ
JC
Specifications subject to change without notice.
15
20
45
50/70
2.0
0.8
10
0.5
–40
128
42
+85
ns
ns
ns
mV
V
V
nA
μA
°C
°C/W
°C/W
–2–
AD8183/AD8185
MAXIMUM POWER DISSIPATION – Watts
ABSOLUTE MAXIMUM RATINGS
1
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.0 V
DVCC to V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
0.2 V
Internal Power Dissipation
2, 3
AD8183/AD8185 24-Lead TSSOP (RU) . . . . . . . . . . . . . 1 W
Input Voltage
IN0A, IN0B, IN1A, IN1B, IN2A, IN2B . . . . . V
EE
≤
V
IN
≤
V
CC
SELECT
A/B, OE
. . . . . . . . . . . . . . . . . . DGND
≤
V
IN
≤
V
CC
Output Short Circuit Duration . . . . . . . . . . . . . . . . . . . Indefinite
3
Storage Temperature Range . . . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature Range (Soldering 10 sec) . . . . . . . . . . . 300°C
NOTES
1
Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2
Specification is for device in free air (T
A
= 25°C).
3
24-lead plastic TSSOP;
θ
JA
= 128°C/W. Maximum internal power dissipation (P
D
)
should be derated for ambient temperature (T
A
) such that P
D
< (150°C–T
A
)/θ
JA
.
2.0
T
J
= 150 C
1.5
1.0
0.5
0
–50 –40 –30 –20 –10 0 10 20 30 40 50 60 70
AMBIENT TEMPERATURE – C
80 90
Figure 2. Maximum Power Dissipation vs. Temperature
PIN CONFIGURATION
IN0A
1
DGND
2
IN1A
3
24
V
CC
23
OE
22
SEL
A/B
MAXIMUM POWER DISSIPATION
The maximum power that can be safely dissipated by the AD8183/
AD8185 is limited by the associated rise in junction temperature.
The maximum safe junction temperature for plastic encapsulated
devices is determined by the glass transition temperature of the
plastic, approximately 150°C. Temporarily exceeding this
limit may cause a shift in parametric performance due to a
change in the stresses exerted on the die by the package. Exceeding
a junction temperature of 175°C for an extended period can
result in device failure.
While the AD8183/AD8185 is internally short circuit protected,
this may not be sufficient to guarantee that the maximum junction
temperature (150°C) is not exceeded under all conditions. To
ensure proper operation, it is necessary to observe the maximum
power derating curves shown in Figure 2.
GND
4
IN2A
5
V
CC 6
AD8183/
AD8185
21
V
CC
20
OUT0
19
V
EE
TOP VIEW
(Not to Scale)
18
OUT1
V
EE 7
17
V
CC
16
OUT2
15
V
EE
14
DVCC
13
V
CC
IN2B
8
GND
9
IN1B
10
GND
11
IN0B
12
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD8183/AD8185 features proprietary ESD protection circuitry, permanent damage
may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
–3–
AD8183/AD8185
1
0
–1
–2
FLATNESS
GAIN – dB
–3
–4
–5
–6
–7
–8
–9
0.1
1
10
FREQUENCY – MHz
100
1k
V
O
AS SHOWN
R
L
= 150
200mV p-p
2V p-p
2V p-p
0.1
0
FLATNESS – dB
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
NORMALIZED GAIN – dB
GAIN
200mV p-p
1
GAIN
0
–1
2V p-p
–2
FLATNESS
–3
–4
–5
–6
–7
–8
–9
0.1
1
10
FREQUENCY – MHz
100
V
O
AS SHOWN
R
L
= 150
200mV p-p
2V p-p
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
1k
NORMALIZED FLATNESS – dB
NORMALIZED FLATNESS – dB
200mV p-p
Figure 3. AD8183 Frequency Response; R
L
= 150
Ω
Figure 6. AD8185 Frequency Response; R
L
= 150
Ω
1
0
–1
–2
FLATNESS
GAIN – dB
–3
–4
–5
–6
–7
–8
–9
0.1
1
10
FREQUENCY – MHz
100
V
O
AS SHOWN
R
L
= 1k
2V p-p
GAIN
2V p-p
200mV p-p
0.3
0.2
0.1
FLATNESS – dB
0
–0.1
–0.2
–0.3
200mV p-p
–0.4
–0.5
–0.6
1k
NORMALIZED GAIN – dB
2
1
GAIN
0
200mV p-p
0.3
0.2
2V p-p
0.1
0
200mV p-p
2V p-p
V
O
AS SHOWN
R
L
= 1k
–0.1
–0.2
–0.3
–0.4
–0.5
1
10
FREQUENCY – MHz
100
–0.6
1k
–1
FLATNESS
–2
–3
–4
–5
–6
–7
–8
0.1
Figure 4. AD8183 Frequency Response; R
L
= 1 k
Ω
Figure 7. AD8185 Frequency Response; R
L
= 1 k
Ω
5
4
3
2
GAIN – dB
1
0
–1
–2
–3
–4
–5
0.1
1
10
FREQUENCY – MHz
100
1k
–40 C
V
O
= 200mV p-p
R
L
= 1k
C
L
= 5pF
TEMPERATURE AS SHOWN
+25 C
+85 C
4
3
2
NORMALIZED GAIN – dB
1
0
–1
–2
–3
–4
–5
–6
0.1
1
10
FREQUENCY – MHz
100
1k
–40 C
V
O
= 200mV p-p
R
L
= 150
C
L
= 5pF
TEMPERATURE AS SHOWN
+25 C
+85 C
Figure 5. AD8183 Frequency Response vs. Temperature
Figure 8. AD8185 Frequency Response vs. Temperature
–4–
AD8183/AD8185
–10
–20
–30
CROSSTALK – dB
CROSSTALK – dB
–40
–50
ALL-HOSTILE
–60
ADJACENT
–70
–80
–90
–100
–110
1
10
100
FREQUENCY – MHz
1k
R
L
= 1k
R
T
= 37.5
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
1
10
100
FREQUENCY – MHz
1k
ADJACENT
ALL-HOSTILE
R
L
= 150
R
T
= 37.5
RTI MEASURED
Figure 9. AD8183 Crosstalk vs. Frequency
Figure 12. AD8185 Crosstalk vs. Frequency
–10
CHANNEL-TO-CHANNEL CROSSTALK – dB
CHANNEL-TO-CHANNELCROSSTALK – dB
–20
–30
–40
–50
–60
DRIVE B, LISTEN A
–70
–80
DRIVE A, LISTEN B
–90
–100
–110
1
10
100
FREQUENCY – MHz
1k
R
L
= 1k
R
T
= 37.5
–10
–20
–30
–40
–50
–60
–70
–80
DRIVE B, LISTEN A
–90
–100
–110
1
10
100
FREQUENCY – MHz
1k
DRIVE A, LISTEN B
R
L
= 150
R
T
= 37.5
RTI MEASURED
Figure 10. AD8183 Channel-to-Channel Crosstalk vs.
Frequency
Figure 13. AD8185 Channel-to-Channel Crosstalk vs.
Frequency
0
–10
–20
DISTORTION – dBc
DISTORTION – dBc
–30
–40
–50
SECOND HARMONIC
–60
–70
THIRD HARMONIC
–80
–90
–100
1
10
FUNDAMENTAL FREQUENCY – MHz
100
V
O
= 2V p-p
R
L
= 150
0
–10
–20
–30
–40
–50
SECOND HARMONIC
–60
–70
THIRD HARMONIC
–80
–90
–100
1
10
FUNDAMENTAL FREQUENCY – MHz
100
V
O
= 2V p-p
R
L
= 150
Figure 11. AD8183 Distortion vs. Frequency
Figure 14. AD8185 Distortion vs. Frequency
–5–
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