MAX4027ESD [MAXIM]

225MHz, Triple, 2-Channel Video Multiplexer-Amplifier; 225MHz ,四人间, 2路视频多路复用器 - 放大器
MAX4027ESD
型号: MAX4027ESD
厂家: MAXIM INTEGRATED PRODUCTS    MAXIM INTEGRATED PRODUCTS
描述:

225MHz, Triple, 2-Channel Video Multiplexer-Amplifier
225MHz ,四人间, 2路视频多路复用器 - 放大器

复用器 开关 复用器或开关 信号电路 放大器 光电二极管
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19-2987; Rev 0; 9/03  
225MHz, Triple, 2-Channel Video  
Multiplexer-Amplifier  
General Description  
Features  
The MAX4027 is a triple, wideband, 2-channel, nonin-  
verting gain-of-two video amplifier with input multiplex-  
ing, capable of driving up to two back-terminated video  
loads. The MAX4027 features current-mode feedback  
amplifiers configured for a gain of two (+6dB) with a  
-3dB large-signal bandwidth of 200MHz. The device  
has low (0.012%/0.014°) differential gain and phase  
errors, and operates from ±±5 supplies.  
Excellent Video Specifications:  
75MHz Small-Signal 0.1dB Gain Flatness  
62MHz Large-Signal 0.1dB Gain Flatness  
0.012%/0.014° Differential Gain/Phase Error  
VGA to UXGA Resolution  
High Speed:  
200MHz 2V  
-3dB Bandwidth  
P-P  
The MAX4027 is ideal for use in broadcast and graph-  
ics video systems because of the low 2pF input capaci-  
tance, channel-to-channel switching time of only 1±ns,  
and wide 62MHz, large-signal 0.1dB bandwidth. High-  
impedance output disabling allows the MAX4027 to be  
incorporated into large switching arrays with minimal  
interaction with the source. Specified over the -40°C to  
+8±°C extended temperature range, the MAX4027 is  
available in 14-pin SO and TSSOP packages.  
1100V/µs Slew Rate  
15ns Settling Time to 0.1%  
Internal Gain of 2V/V Compensates for Output  
Back Termination  
Fast Switching:  
15ns Channel-Switching Time  
260mV  
Switching Transient  
P-P  
Drives Two Back-Terminated Video Loads  
High-Impedance Output Disable  
Applications  
5ideo Source Selection (Multiplexing)  
Picture in Picture (PIP) Insertion  
Crosspoint Expansion  
Ordering Information  
Coaxial Cable Drivers  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
14 SO  
Supports 5GA to UXGA (1600 x 1200) Resolution  
Enterprise Class (Blade) Servers  
Keyboard-5ideo-Mouse (K5M)  
MAX4027ESD  
MAX4027EUD  
14 TSSOP  
Typical Operating Circuit  
Pin Configuration  
TOP VIEW  
MAX4027  
OUT1  
R
G
B
VIDEO  
SOURCE  
1
x 2  
R
IN1A  
1
2
3
4
5
6
7
14 A/B  
IN1A  
IN2A  
IN3A  
IN2A  
IN3A  
GND  
IN1B  
IN2B  
IN3B  
13 OUT1  
12  
V
CC  
TRIPLE  
2:1  
MUX  
OUT2  
OUT3  
x 2  
x 2  
G
B
IN1B  
IN2B  
IN3B  
11 OUT2  
MAX4027  
10  
9
V
EE  
R
G
B
VIDEO  
SOURCE  
2
OUT3  
EN  
8
SO/TSSOP  
A/B  
EN  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
225MHz, Triple, 2-Channel Video  
Multiplexer-Amplifier  
ABSOLUTE MAXIMUM RATINGS  
Positive Supply Voltage (V  
to GND) ..................................+6V  
Continuous Power Dissipation (T = +70°C)  
CC  
A
Negative Supply Voltage (V to GND)..................................-6V  
14-Pin TSSOP (derate 9.1mW/°C above +70°C) .........727mW  
14-Pin SO (derate 8.3mW/°C above +70°C)................667mW  
Operating Temperature Range ...........................-40°C to +85°C  
Storage Temperature Range.............................-65°C to +150°C  
Junction Temperature .....................................................+150°C  
Lead Temperature (soldering, 10s) .................................+300°C  
EE  
Amplifier Input Voltage (IN_ _).........(V - 0.3V) to (V  
Digital Input Voltage (EN, A/B)...................-0.3V to (V  
+ 0.3V)  
+ 0.3V)  
EE  
CC  
CC  
Output Short Circuit to GND (Note 1).........................Continuous  
Output Short Circuit to V or V ...........................................5s  
CC  
EE  
Note 1: Continuous power-dissipation rating must also be observed.  
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional  
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to  
absolute maximum rating conditions for extended periods may affect device reliability.  
DC ELECTRICAL CHARACTERISTICS  
(V  
= 5V, V = -5V, V  
= 0V, R = 150 to GND, T = -40°C to +85°C. Typical values are at T = +25°C.) (Note 2)  
CC  
EE  
IN_ _  
L
A
A
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
+4.5  
-4.5  
TYP  
+5.0  
-5.0  
31  
MAX  
+5.5  
-5.5  
39  
UNITS  
V
CC  
Operating Supply Voltage Range  
Positive Supply Current  
Inferred from the PSRR test  
V
V
EE  
EN = GND  
I
mA  
CC  
EN = 5V  
17  
24  
EN = GND  
28  
36  
Negative Supply Current  
Input Voltage Range  
Input Offset Voltage  
I
mA  
V
EE  
EN = 5V  
15  
21  
V
Inferred from voltage gain  
1.25  
1.9  
1.75  
1
IN_ _  
T
T
= +25°C  
6
11  
A
A
V
mV  
OS  
= -40°C to +85°C  
Input Offset-Voltage Matching  
Voltage Gain  
V
Channel to channel  
2.5V  
1
12  
mV  
V/V  
OS  
A
V
=
OUT_  
2.0  
2.1  
V
Input Offset-Voltage Temperature  
Coefficient  
TCV  
1
2
µV/°C  
OS  
T
T
= +25°C  
10  
18  
A
A
Input Bias Current  
Input Resistance  
I
µA  
B
= -40°C to +85°C  
Channel on  
Channel off  
100  
1
400  
20  
k
V
= -1.25V to  
IN_ _  
R
IN  
+1.25V  
M
m
k
DC Output Resistance  
R
10  
OUT  
Disabled Output Resistance  
DC Power-Supply Rejection Ratio  
Output Voltage Swing  
R
EN = 5V, V  
= -2.5V to +2.5V (Note 3)  
OUT_  
1.6  
86  
OUT(d)  
PSRR  
V
= +4.5V to +5.5V, V = -4.5V to -5.5V  
60  
dB  
V
CC  
EE  
V
2.5  
3.5  
143  
OUT_  
Output Short-Circuit Current  
I
mA  
SC  
LOGIC CHARACTERISTICS (EN, A/B)  
Logic-Low Threshold  
V
0.8  
V
V
IL  
IH  
IL  
Logic-High Threshold  
V
2.0  
Logic-Low Input Current  
Logic-High Input Current  
I
V
V
= 0V  
-4  
-20  
µA  
µA  
IL  
I
= +5.5V, V = +5.5V  
CC  
350  
600  
IH  
IH  
2
_______________________________________________________________________________________  
225MHz, Triple, 2-Channel Video  
Multiplexer-Amplifier  
AC ELECTRICAL CHARACTERISTICS  
(V  
= 5V, V = -5V, V  
= 0V, R = 75 to GND, R = 150 to GND, T = +25°C, unless otherwise noted.)  
CC  
EE  
IN_ _  
IN  
L
A
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
AMPLIFIER CHARACTERISTICS  
Small-Signal -3dB Bandwidth  
BW  
V
V
V
V
= 20mV  
= 20mV  
225  
75  
MHz  
MHz  
MHz  
MHz  
SS  
IN_ _  
IN_ _  
IN_ _  
IN_ _  
P-P  
Small-Signal Bandwidth for  
0.1dB Gain Flatness  
BW  
LS(0.1)  
P-P  
Large-Signal -3dB Bandwidth  
BW  
= 1V  
= 1V  
200  
62  
LS  
LS(0.1)  
SR  
P-P  
P-P  
Large-Signal Bandwidth for  
0.1dB Gain Flatness  
BW  
Slew Rate  
V
V
= 1V  
= 1V  
1100  
15  
V/µs  
ns  
IN_ _  
IN_ _  
P-P  
P-P  
Settling Time to 0.1%  
Differential Gain Error  
Differential Phase Error  
Delay Between Channels  
Channel-to-Channel Crosstalk  
A/B Crosstalk  
t
S
DG  
DP  
5-step modulated staircase (Note 4)  
5-step modulated staircase (Note 4)  
0.012  
0.014  
0.1  
-61  
-80  
1
%
degrees  
ns  
t
V
V
V
= 1V , t = 100ps  
P-P R  
D
IN_ _  
IN_ _  
IN_ _  
X
=
=
1V , f = 10MHz  
dB  
TALK  
P-P  
1V , f = 10MHz  
P-P  
dB  
Output Impedance  
Z
f = 10MHz  
OUT  
Total Harmonic Distortion  
Off-Isolation  
THD  
V
V
= 2V , f = 10MHz  
64  
dBc  
dB  
OUT_  
OUT_  
P-P  
A
= 2V , f = 10MHz, R = 75  
-83  
3
ISO  
P-P  
S
Output Capacitance  
Input Capacitance  
C
Channel on or off  
Channel on or off  
f = 100kHz  
pF  
OUT  
C
2
pF  
IN  
Input-Voltage Noise Density  
Input-Current Noise Density  
SWITCHING CHARACTERISTICS  
Channel-Switching Time  
Enable Delay Time  
e
6.5  
6.5  
nV/ Hz  
pA/ Hz  
n
i
n
f = 100kHz  
t
(Notes 5, 6)  
(Notes 5, 7)  
(Notes 5, 7)  
(Note 8)  
15  
20  
ns  
ns  
ns  
SW  
PDE  
PDD  
t
Disable Delay Time  
t
25  
Switching Transient  
V
260  
mV  
P-P  
TRAN  
Note 2: Limits are 100% production tested at T = +25°C. Limits over the operating temperature range are guaranteed by design.  
A
Note 3: Disabled output resistance includes the internal feedback network.  
Note 4: Input test signal is NTSC composite with 5-step staircase, of 40 IRE per step, modulated with 3.58MHz color subcarrier.  
Note 5: See the Timing Diagram (Figure 2).  
Note 6: Channel-switching time specified for switching between input channels; does not include signal rise/fall times for switching  
between channels with different input voltages.  
Note 7: Output enable/disable delay times do not include amplifier output slewing times.  
Note 8: Switching transient measured while switching between two grounded channels.  
_______________________________________________________________________________________  
3
225MHz, Triple, 2-Channel Video  
Multiplexer-Amplifier  
Typical Operating Characteristics  
(V  
= +5V, V = -5V, R = 150 to GND, T = +25°C, unless otherwise noted.)  
EE L A  
CC  
SMALL-SIGNAL GAIN FLATNESS  
vs. FREQUENCY  
SMALL-SIGNAL FREQUENCY RESPONSE  
LARGE-SIGNAL FREQUENCY RESPONSE  
3
2
1
0
0.3  
0.2  
3
2
V
A
= 20mV  
P-P  
V
A
= 20mV  
P-P  
IN_ _  
A = +2V/V  
V
IN_ _  
= +2V/V  
= +2V/V  
V
V
0.1  
1
V
= 2V  
P-P  
OUT_  
0
0
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-0.1  
-0.2  
-0.3  
-0.4  
-0.5  
-0.6  
-0.7  
-1  
-2  
-3  
-4  
-5  
-6  
-7  
V
OUT_  
= 4V  
P-P  
1M  
10M  
100M  
1G  
1M  
10M  
100M  
1G  
1M  
10M  
100M  
1G  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
LARGE-SIGNAL GAIN FLATNESS  
vs. FREQUENCY  
CHANNEL-TO-CHANNEL GAIN MATCHING  
vs. FREQUENCY  
DIFFERENTIAL GAIN AND PHASE  
0.020  
0.010  
0
0.5  
0.4  
0.3  
0.2  
V
= 2V  
P-P  
A
= +2V/V  
OUT_  
V
0.3  
0.1  
-0.010  
-0.020  
V
= 2V  
P-P  
OUT_  
0.2  
0
0.1  
-0.1  
-0.2  
-0.3  
-0.4  
-0.5  
-0.6  
-0.7  
1st  
2nd  
3rd  
4th  
5th  
6th  
0
-0.1  
-0.2  
-0.3  
-0.4  
-0.5  
0.020  
0.010  
0
V
= 4V  
P-P  
OUT_  
-0.010  
-0.020  
1st  
2nd  
3rd  
4th  
5th  
6th  
1M  
10M  
100M  
1M  
10M  
100M  
1G  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
POWER-SUPPLY REJECTION RATIO  
vs. FREQUENCY  
CHANNEL-TO-CHANNEL CROSSTALK  
vs. FREQUENCY  
OFF-ISOLATION vs. FREQUENCY  
-20  
-25  
-30  
-35  
-40  
-45  
-50  
-55  
-60  
-65  
0
-20  
0
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
-40  
-60  
PSRR-  
-80  
-100  
-120  
PSRR+  
100k  
1M  
10M  
100M  
1M  
10M  
100M  
1G  
100k  
1M  
10M  
100M  
1G  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
4
_______________________________________________________________________________________  
225MHz, Triple, 2-Channel Video  
Multiplexer-Amplifier  
Typical Operating Characteristics (continued)  
(V  
= +5V, V = -5V, R = 150 to GND, T = +25°C, unless otherwise noted.)  
EE L A  
CC  
TOTAL HARMONIC DISTORTION  
vs. FREQUENCY  
A/B CROSSTALK vs. FREQUENCY  
OUTPUT IMPEDANCE vs. FREQUENCY  
0
-20  
-40  
-60  
-80  
100  
10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
-90  
V
= 2V  
P-P  
OUT_  
1
0.1  
0.01  
-100  
-120  
100k  
1M  
10M  
100M  
1G  
100k  
1M  
10M  
100M  
1G  
1M  
10M  
FREQUENCY (Hz)  
100M  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
LARGE-SIGNAL PULSE RESPONSE  
(C = 20pF)  
LARGE-SIGNAL PULSE RESPONSE  
SMALL-SIGNAL PULSE RESPONSE  
LOAD  
MAX4027 toc13  
MAX4027 toc14  
MAX4027 toc15  
V
V
IN_ _  
500mV/div  
IN_ _  
50mV/div  
V
IN_ _  
500mV/div  
0V  
0V  
0V  
0V  
0V  
0V  
V
V
OUT_  
1V/div  
OUT_  
100mV/div  
V
OUT_  
1V/div  
10ns/div  
10ns/div  
10ns/div  
SMALL-SIGNAL PULSE RESPONSE  
ENABLE RESPONSE TIME  
A/B SWITCHING TRANSIENT  
MAX4027 toc18  
(C  
= 20pF)  
LOAD  
MAX4027 toc17  
MAX4027 toc16  
EN  
2.5V/div  
A/B  
2.5V/div  
V
IN_ _  
50mV/div  
0V  
0V  
0V  
0V  
0V  
0V  
V
V
V
OUT_  
1V/div  
OUT_  
100mV/div  
OUT_  
100mV/div  
20ns/div  
20ns/div  
10ns/div  
_______________________________________________________________________________________  
5
225MHz, Triple, 2-Channel Video  
Multiplexer-Amplifier  
Typical Operating Characteristics (continued)  
(V  
= +5V, V = -5V, R = 150 to GND, T = +25°C, unless otherwise noted.)  
EE L A  
CC  
INPUT BIAS CURRENT  
vs. TEMPERATURE  
POSITIVE OUTPUT SWING  
vs. TEMPERATURE  
SUPPLY CURRENT vs. TEMPERATURE  
35  
5.0  
4.5  
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0
5.0  
4.5  
4.0  
3.5  
3.0  
2.5  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
-50  
-25  
0
25  
50  
75  
100  
-50  
-25  
0
25  
50  
75  
100  
-50  
-25  
0
25  
50  
75  
100  
TEMPERATURE ( C)  
TEMPERATURE ( C)  
TEMPERATURE ( C)  
NEGATIVE OUTPUT SWING  
vs. TEMPERATURE  
INPUT OFFSET VOLTAGE  
vs. TEMPERATURE  
-2.5  
-3.0  
-3.5  
-4.0  
-4.5  
-5.0  
4
3
2
R
= 50  
LOAD  
1
R
= 150  
LOAD  
0
-1  
-2  
-3  
-4  
NO LOAD  
-50  
-25  
0
25  
50  
75  
100  
-50  
-25  
0
25  
50  
75  
100  
TEMPERATURE ( C)  
TEMPERATURE ( C)  
OUTPUT SHORT-CIRCUIT CURRENT  
vs. TEMPERATURE  
SMALL-SIGNAL BANDWIDTH  
vs. FREQUENCY  
160  
155  
150  
145  
140  
135  
130  
125  
3
2
V
A
= 20mV  
P-P  
IN_ _  
= +2V/V  
SOURCING AND SINKING  
15pF  
10pF  
V
1
0
-1  
-2  
-3  
-4  
-5  
-6  
-7  
0pF  
5pF  
-50  
-25  
0
25  
50  
75  
100  
1M  
10M  
100M  
1G  
TEMPERATURE ( C)  
FREQUENCY (Hz)  
6
_______________________________________________________________________________________  
225MHz, Triple, 2-Channel Video  
Multiplexer-Amplifier  
Pin Description  
PIN  
1
NAME  
IN1A  
IN2A  
IN3A  
GND  
IN1B  
IN2B  
IN3B  
FUNCTION  
Amplifier 1 Channel A Input  
2
Amplifier 2 Channel A Input  
3
Amplifier 3 Channel A Input  
4
Power Supply, Analog and Digital Ground. Connect GND to ground plane for best RF performance.  
5
Amplifier 1 Channel B Input  
Amplifier 2 Channel B Input  
Amplifier 3 Channel B Input  
6
7
Output Enable Logic Input. Drive EN low or leave open for normal operation. Pull EN high to disconnect  
amplifier output (output is high impedance when disabled). EN is internally pulled to GND through a 17k  
resistor.  
8
EN  
9
OUT3  
Amplifier Output 3  
10  
11  
12  
13  
V
Negative Power-Supply Voltage. Bypass V to GND with a 0.1µF capacitor.  
EE  
EE  
OUT2  
Amplifier Output 2  
V
Positive Power-Supply Voltage. Bypass V  
Amplifier Output 1  
to GND with a 0.1µF capacitor.  
CC  
CC  
OUT1  
Channel-Select Input. Drive A/B low or leave open to select channel A for all amplifiers. Pull A/B high to select  
channel B for all amplifiers. A/B is internally pulled to GND through a 17k resistor.  
14  
A/B  
Detailed Description  
Truth Tables  
Table 1. Input Control Logic  
The MAX4027 combines three 2:1 multiplexers with  
+2V/V (+6dB) closed-loop gain (A ) amplifiers. This  
VCL  
low-power, high-speed device operates from 5V sup-  
plies, while driving up to two back-terminated video  
loads with very low distortion. Differential gain and  
phase errors are 0.012%/0.014° for the MAX4027.  
A/B  
0
AMPLIFIER INPUT  
FUNCTION  
IN_A  
IN_B  
Channel A Selected  
Channel B Selected  
1
The input multiplexers feature fast 15ns channel-  
switching times and small switching transients. The  
multiplexers also feature high input resistance and con-  
stant input capacitance, so overall input impedance  
can be set by external input-terminating resistors.  
Table 2. Output Control Logic  
EN  
AMPLIFIER OUTPUT  
FUNCTION  
0
On  
Outputs Enabled  
Outputs High  
Impedance  
Drive EN high to place the amplifier outputs in a high-  
impedance state, and minimize the supply current. This  
function allows use of multiple mux/amps in parallel to  
form large switching arrays.  
1
Off  
Applications Information  
The MAX4027 features an A/B input, which selects  
either channel A or B. Drive A/B low to select channel A  
or drive A/B high to select channel B. Channel A is  
automatically selected if A/B is left unconnected.  
Disable Mode  
Drive EN high to place the MAX4027 in disable mode.  
Placing the device in disable mode reduces the quies-  
cent current to 17mA (V ) and 15mA (V ) and places  
CC  
EE  
the amplifier outputs into a high-impedance state, typi-  
_______________________________________________________________________________________  
7
225MHz, Triple, 2-Channel Video  
Multiplexer-Amplifier  
cally 1.6k . Parallel multiple devices to construct larger  
switch matrices by connecting the outputs of several  
devices together and disabling all but one of the paral-  
leled amplifiersoutputs. Two internal 800 thin-film  
resistors set the MAX4027 to a fixed gain of +2.  
Consider the impedance of the internal feedback resis-  
tors when operating multiple MAX4027s in large multi-  
plexer applications.  
Layout and Power-Supply Bypassing  
The MAX4027 has an extremely high bandwidth and  
requires careful board layout. For best performance, use  
constant-impedance microstrip or stripline techniques.  
To realize the full AC performance of these high-speed  
amplifiers, pay careful attention to power-supply  
bypassing and board layout. The PC board should have  
at least two layers: a signal and power layer on one  
side, and a large, low-impedance ground plane on the  
other side. The ground plane should be as free of voids  
as possible. With multilayer boards, locate the ground  
plane on an internal layer that incorporates no signal or  
power traces.  
Drive EN low for normal operation. EN has internal pull-  
down circuitry. The MAX4027 is enabled when EN is  
unconnected.  
Video Line Driver  
The MAX4027 is well suited to drive short coaxial trans-  
mission lines when the cable is terminated at both ends  
(Figure 1) where the fixed gain of +2 compensates for the  
loss in the back termination. Cable frequency response  
may cause variations in the flatness of the signal.  
Observe the following guidelines when designing the  
board regardless of whether or not a constant-imped-  
ance board is used.  
1) Do not use wire-wrap boards or breadboards.  
2) Do not use IC sockets; they increase parasitic  
capacitance and inductance.  
Input Voltage Range  
The guaranteed input voltage range is 1.25V.  
Exceeding this value can cause unpredictable results,  
including output clipping, excessive input current, and  
switching delays.  
3) Keep lines as short and as straight as possible. Do  
not make 90° turns; round all corners.  
4) Observe high-frequency bypassing techniques to  
maintain the amplifiers accuracy and stability.  
Multiplexer  
The input multiplexer (mux) is controlled by a 3.3V  
TTL/CMOS-compatible control input (see the Truth  
Tables). Input capacitance is a constant, low 2pF and  
input resistance is 17k to GND for all input channels,  
regardless of whether or not the channel is selected. All  
logic levels (EN and A/B) default low if left unconnected.  
5) Use surface-mount components. They generally  
have shorter bodies and lower parasitic reactance,  
yielding better high-frequency performance than  
through-hole components.  
The bypass capacitors should include a 0.1µF ceramic  
surface-mount capacitor between each supply pin and  
the ground plane, located as close to the package as  
A/B  
EN  
75 CABLE  
R
75  
T
IN_A  
OUT_  
R
T
75 CABLE  
75  
R
T
75  
75 CABLE  
IN_B  
R
T
75  
MAX4027  
Figure 1. Video Line Driver  
_______________________________________________________________________________________  
8
225MHz, Triple, 2-Channel Video  
Multiplexer-Amplifier  
possible. Optionally, place a 10µF tantalum capacitor  
Functional Diagram  
at the power-supply pinspoints of entry to the PC  
board to ensure the integrity of incoming supplies. The  
power-supply trace should lead directly from the tanta-  
V
A/B  
CC  
lum capacitor to the V  
and V pins.  
EE  
CC  
EN  
Use surface-mount resistors for input termination and  
output back termination. Place the termination resistors  
as close to the IC as possible.  
IN1A  
IN1B  
MUX1  
OUT1  
TO A/B  
MUX2  
TO EN  
IN2A  
IN2B  
OUT2  
A/B  
TO A/B  
MUX3  
t
t
SW  
SW  
CHANNEL A  
CHANNEL B  
CHANNEL A  
OUT  
TO EN  
IN3A  
IN3B  
OUT3  
EN  
t
t
PDE  
PDD  
MAX4027  
HIGH IMPEDANCE  
GND  
OUT  
V
EE  
Figure 2. Switching Timing Diagram  
Chip Information  
TRANSISTOR COUNT: 870  
PROCESS: Bipolar  
_______________________________________________________________________________________  
9
225MHz, Triple, 2-Channel Video  
Multiplexer-Amplifier  
Package Information  
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information  
go to www.maxim-ic.com/packages.)  
INCHES  
MILLIMETERS  
DIM  
A
MIN  
MAX  
0.069  
0.010  
0.019  
0.010  
MIN  
1.35  
0.10  
0.35  
0.19  
MAX  
1.75  
0.25  
0.49  
0.25  
0.053  
0.004  
0.014  
0.007  
N
A1  
B
C
e
0.050 BSC  
1.27 BSC  
E
0.150  
0.228  
0.016  
0.157  
0.244  
0.050  
3.80  
5.80  
0.40  
4.00  
6.20  
1.27  
E
H
H
L
VARIATIONS:  
INCHES  
1
MILLIMETERS  
DIM  
D
MIN  
MAX  
0.197  
0.344  
0.394  
MIN  
4.80  
8.55  
9.80  
MAX  
5.00  
N
8
MS012  
AA  
TOP VIEW  
0.189  
0.337  
0.386  
D
8.75 14  
10.00 16  
AB  
D
AC  
D
C
A
B
0 -8  
e
A1  
L
FRONT VIEW  
SIDE VIEW  
PROPRIETARY INFORMATION  
TITLE:  
PACKAGE OUTLINE, .150" SOIC  
APPROVAL  
DOCUMENT CONTROL NO.  
REV.  
1
21-0041  
B
1
10 ______________________________________________________________________________________  
225MHz, Triple, 2-Channel Video  
Multiplexer-Amplifier  
Package Information (continued)  
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information  
go to www.maxim-ic.com/packages.)  
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are  
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.  
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11  
© 2003 Maxim Integrated Products  
Printed USA  
is a registered trademark of Maxim Integrated Products.  

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