MAXIM MAX4136

19-2001; Rev 0; 6/96
KIT
ATION
EVALU
BLE
A
IL
A
V
A
1-Input/4-Output
Video Distribution Amplifiers
_____________________Selector Guide
PART
No. OF
OUTPUTS
GAIN
(V/V)
-3dB
BANDWIDTH
(MHz)
MAX4135
6
Fixed 2
185
MAX4136
6
≥2
140
MAX4137
4
Fixed 2
185
MAX4138
4
≥2
140
________________________Applications
Video Switching and Distribution
High-Resolution RGB CRT Monitors
High-Speed Analog Bus Drivers
RF Signal Processing
Composite Video Preamplifiers
____________________________Features
♦ Fixed Gain of 2V/V (MAX4137)
External Gain Set (MAX4138)
♦ High Speed:
185MHz -3dB Bandwidth (MAX4137)
140MHz -3dB Bandwidth (MAX4138)
1000V/µs Slew Rate
♦ High Full-Power Bandwidths (VOUT = 2Vp-p):
185MHz (MAX4137)
140MHz (MAX4138)
♦ 0.1dB Gain Flatness to 40MHz
♦ Low Differential Gain/Phase Error: 0.10%/0.02°
♦ High-Impedance Output Disable
______________Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
MAX4137EWG
-40°C to +85°C
24 Wide SO
MAX4138EWG
-40°C to +85°C
24 Wide SO
_________________Pin Configurations
TOP VIEW
N.C. 1
24 N.C.
VCCO 2
23 SEL1
OUT1 3
22 SEL2
AGND 4
21 AGND
OUT2 5
MAX4137
MAX4138
20 IN+
VEEO 6
19 VEEI
VEEO 7
18 AGND (RG)
OUT3 8
17 N.C. (RF)
AGND 9
16 VCCI
OUT4 10
15 SEL3
VCCO 11
14 SEL4
N.C. 12
13 N.C.
SO
( ) ARE FOR MAX4138.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
MAX4137/MAX4138
_______________General Description
The MAX4137/MAX4138 are 1-input/4-output voltagefeedback amplifiers that combine high speed with fast
switching for video distribution applications. The
MAX4137 is internally set for a closed-loop gain of
2V/V, while the MAX4138 can be externally set for gains
of 2V/V or greater.
The MAX4137 achieves a -3dB bandwidth of 185MHz,
with 0.1dB gain flatness to 40MHz. The MAX4138’s
-3dB bandwidth is 140MHz, with 0.1dB gain flatness to
40MHz. Both devices deliver a 1000V/µs slew rate, as
well as exceptional full-power bandwidths of 185MHz
and 140MHz, respectively.
A 25ns channel switching time enables rapid multiplexing for picture-in-picture applications, yet maintains a
high off-isolation of 75dB and all-hostile crosstalk of
-50dB (f = 30MHz). The MAX4137/MAX4138’s on-board
logic selects any combination of the four signal outputs.
Each output is capable of swinging ±2V and delivering
up to 65mA of current.
For applications that require a 1-input/6-output distribution amplifier, see the MAX4135/MAX4136 data sheet.
MAX4137/MAX4138
1-Input/4-Output
Video Distribution Amplifiers
ABSOLUTE MAXIMUM RATINGS
Power-Supply Voltage (VCC to VEE).......................................12V
Voltage on Any Input Pin to GND .......(VCC + 0.3V) to (VEE - 0.3V)
Short-Circuit Duration to GND....................................Continuous
Continuous Power Dissipation (TA = +70°C)
Wide SO (derate 19.3mW/°C above +70°C)..................1.54W
Operating Temperature Range
MAX4137EWG/MAX4138EWG ........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
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
(VCC = +5V, VEE = -5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Input Offset Voltage
SYMBOL
VOS
Input Offset Voltage Match
Between Channels
Input Offset Voltage Drift
Input Bias Current
TCVOS
IB
TYP
MAX
UNITS
VOUT = 0V, RL = 150Ω
CONDITIONS
MIN
1
8.0
mV
VOUT = 0V, RL = 150Ω
1
6
mV
VOUT = 0V, RL = ∞
30
VOUT = 0V, RL = ∞, VIN = -VOS
4.5
µV/°C
10
µA
Common-Mode Input
Resistance
RIN(CM)
MAX4138, either input
5
MΩ
Common-Mode Input
Capacitance
CIN(CM)
MAX4138, either input
2
pF
f = 1MHz
7
nV/√Hz
f = 1MHz to 100MHz
88
µVRMS
f = 1MHz
2.4
pA/√Hz
f = 1MHz to 100MHz
Input Voltage Noise
en
Input Current Noise
in
30
nARMS
Input Capacitance
CIN
2
pF
Common-Mode Input Voltage
Range
VCM
±2.5
V
60
dB
Common-Mode Rejection Ratio
CMRR
VCM = ±2.5V
Power-Supply Rejection Ratio
PSRR
VS = ±4.75V to ±5.25V
Quiescent Supply Current
ISY
VIN = 0V
Output Voltage Swing
VOUT
RL = 150Ω
Output Current Drive
IOUT
RL = 30Ω
SEL High Threshold
VIH
SEL Low Threshold
VIL
SEL Input Current
ISEL
2
55
65
dB
All channels off
30
40
All channels on
47
60
Positive
2.2
2.6
Negative
-2.0
-2.5
45
65
mA
V
mA
2.0
V
5
µA
0.8
V
1
_______________________________________________________________________________________
1-Input/4-Output
Video Distribution Amplifiers
(VCC = +5V, VEE = -5V, AVCL = 2V/V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = 25°C.)
PARAMETER
-3dB Bandwidth
SYMBOL
BW-3dB
Full-Power Bandwidth
FPBW
0.1dB Bandwidth
CONDITIONS
Settling Time
TYP
MAX4137
185
MAX4138
140
VOUT = 2Vp-p,
AVCL = 2V/V
MAX4137
185
MAX4138
140
AVCL = 2V/V
Slew Rate
MIN
VOUT ≤ 0.1VRMS,
AVCL = 2V/V
MAX
UNITS
MHz
MHz
40
MHz
1000
V/µs
SR
-2V ≤ VOUT ≤ +2V
ts
-1V ≤ VOUT ≤ +1V,
RL =150Ω, AVCL =2V/V
to 0.1%
17
to 0.01%
40
Differential Gain
DG
f = 3.58MHz,
AVCL = 2V/V
MAX4137
0.10
MAX4138
0.10
Differential Phase
DP
f = 3.58MHz,
AVCL = 2V/V
MAX4137
0.02
MAX4138
0.02
ns
%
degrees
All-Hostile Crosstalk
VIN = 1Vp-p, f = 30MHz
-50
dB
Off Isolation
VIN = 1Vp-p, f = 30MHz
75
dB
ns
Channel Switching Off Time
tOFF
25
Channel Switching On Time
tON
25
ns
VIN = 0VDC
±1
mV
-72
dBc
Digital Switching Feedthrough
Spurious-Free Dynamic Range
SFDR
fC = 5MHz, AVCL = 2V/V, VOUT = 2Vp-p,
RL = 100Ω
Output On-Resistance
ROUT
f = DC, AVCL = 2V/V
1
Ω
Output Off-Resistance
ROUT
f = DC, AVCL = 2V/V
200
kΩ
Output On-Capacitance
COUT(ON)
2
pF
Output Off-Capacitance
COUT(OFF)
3.5
pF
_______________________________________________________________________________________
3
MAX4137/MAX4138
AC ELECTRICAL CHARACTERISTICS
__________________________________________Typical Operating Characteristics
(VCC = +5V, VEE = -5V, RL = 150Ω, TA = +25°C, unless otherwise noted.)
8
10
9
9
8
5
4
GAIN (dB)
GAIN (dB)
6
7
6
5
7
6
5
3
4
4
2
3
3
1
2
2
0
1
1
100M
1G
100k
1M
10M
100M
MAX4138
LARGE-SIGNAL GAIN
vs. FREQUENCY (AVCL = +2)
11
9
10
VOUT = 2Vp-p
9
8
GAIN (dB)
6
5
-35
-45
7
6
5
-55
-65
-75
3
3
-95
2
2
-105
-85
1
1M
10M
100M
1G
-115
100k
FREQUENCY (Hz)
1M
10M
100M
1G
100k
1M
FREQUENCY (Hz)
ALL-HOSTILE CROSSTALK
vs. FREQUENCY
-30
100M
1G
INPUT VOLTAGE NOISE vs. FREQUENCY
100
MAX4137-08
800
MAX4137/8 TOC-7
-20
10M
FREQUENCY (Hz)
CLOSED-LOOP OUTPUT IMPEDANCE
vs. FREQUENCY
-10
1G
-25
4
100k
100M
OFF-ISOLATION vs. FREQUENCY
4
1
10M
-15
8
7
1M
FREQUENCY (Hz)
MAX4137
LARGE-SIGNAL GAIN
vs. FREQUENCY (AVCL = +2)
VOUT = 2Vp-p
100k
1G
FREQUENCY (Hz)
250
MAX4137-8
10
10M
FREQUENCY (Hz)
GAIN (dB)
11
1M
MAX4137/8 TOC-05
100k
GAIN (dB)
10
8
MAX4137/8 TOC-04
GAIN (dB)
7
11
MAX4137/8 TOC-06
9
MAX4137/8 TOC-02
11
MAX4137/8 TOC-01
10
IMPEDANCE (Ω)
-50
-60
-70
-80
NOISE (nV/√Hz)
80
-40
25
8.0
2.5
10
0.8
-90
0.25
-100
0.08
-110
100k
1M
10M
FREQUENCY (Hz)
4
MAX4138
SMALL-SIGNAL GAIN
vs. FREQUENCY (AVCL = +10)
MAX4138
SMALL-SIGNAL GAIN
vs. FREQUENCY (AVCL = +2)
MAX4137/8 TOC-03
MAX4137
SMALL-SIGNAL GAIN
vs. FREQUENCY (AVCL = +2)
ALL-HOSTILE CROSSTALK (dB)
MAX4137/MAX4138
1-Input/4-Output
Video Distribution Amplifiers
100M
1
100k
1M
10M
FREQUENCY (Hz)
100M
1
10
100
1k
10k 100k 1M
FREQUENCY (Hz)
_______________________________________________________________________________________
10M
1-Input/4-Output
Video Distribution Amplifiers
MAX4138
LARGE-SIGNAL PULSE RESPONSE
(AVCL = +2)
IN
GND
OUT
GND
VOLTAGE (500mV/div)
VOLTAGE (500mV/div)
MAX4137-10
MAX4137-11
MAX4137
LARGE-SIGNAL PULSE RESPONSE
(AVCL = +2)
IN
GND
OUT
GND
TIME (10ns/div)
TIME (10ns/div)
MAX4138
SMALL-SIGNAL PULSE RESPONSE
(AVCL = +2)
IN
GND
OUT
GND
VOLTAGE (50mV/div)
IN
GND
OUT
GND
TIME (10ns/div)
TIME (10ns/div)
DIGITAL FEEDTHROUGH
MAX4137-14
VOLTAGE (50mV/div)
MAX4137-12
MAX4137-13
MAX4137
SMALL-SIGNAL PULSE RESPONSE
(AVCL = +2)
SEL
(1V/div)
OUT
(45mV/div)
TIME (20ns/div)
_______________________________________________________________________________________
5
MAX4137/MAX4138
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, RL = 150Ω, TA = +25°C, unless otherwise noted.)
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, RL = 150Ω, TA = +25°C, unless otherwise noted.)
-40
-50
-60
2ND HARMONIC
-70
-80
3RD HARMONIC
-90
GAIN (%)
MAX4137/8 TOC-16
-40
-50
1M
-0.05
-0.10 AVCL = 2V/V
RL = 150Ω
-0.15
0
100
0.01
-60
2ND HARMONIC
-70
-80
100M
10M
-0.00
IRE
3RD HARMONIC
-100
100k
100K
1M
10M
100M
0.00
-0.01
-0.02 AVCL = 2V/V
R = 150Ω
-0.03 L
0
100
FREQUENCY (Hz)
FREQUENCY (Hz)
IRE
MAX4137
OUTPUT SWING vs. LOAD RESISTANCE
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
POWER SUPPLY CURRENT
vs. TEMPERATURE
VOLTAGE (mV)
4.5
4.0
3.5
0
-1
-2
3.0
-3
2.5
-4
2.0
-5
54
MAX4137/8 TOC-21
1
53
52
CURRENT (mA)
5.0
MAX4137/8 TOC-20
2
MAX4137/8 TOC-19
5.5
51
50
49
48
47
46
50
75
100
125
150
44
-75 -50 -25
0
25
50
-75 -50 -25
75 100 125 150
0
25
50
75 100 125 150
LOAD RESISTANCE (Ω)
TEMPERATURE (°C)
TEMPERATURE (°C)
INPUT BIAS CURRENT
vs. TEMPERATURE
POSITIVE OUTPUT VOLTAGE
SWING vs. TEMPERATURE
NEGATIVE OUTPUT VOLTAGE
SWING vs. TEMPERATURE
3.0
MAX4137/8-TOC-22
8
7
2.9
6
-2.3
-2.4
VOLTAGE (V)
2.8
5
4
-2.5
2.7
2.6
-2.6
-2.7
3
2.5
-2.8
2
2.4
-2.9
1
2.3
-75 -50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
MAX4137/8 TOC-24
25
45
VOLTAGE (V)
OUTPUT SWING (Vp-p)
-30
-90
-100
6
-20
0.05
PHASE (deg)
-30
DIFFERENTIAL GAIN
AND PHASE
MAX4137/8 TOC-23
HARMONIC DISTORTION (dBc)
-20
0
-10
HARMONIC DISTORTION (dBc)
MAX4137/8 TOC-15
0
-10
MAX4138
HARMONIC DISTORTION vs. FREQUENCY
(G = +2, VO = 2Vp-p, RL = 100Ω)
MAX4137/8 TOC-17
MAX4137
HARMONIC DISTORTION vs. FREQUENCY
(VO = 2Vp-p, RL = 100Ω)
CURRENT (µA)
MAX4137/MAX4138
1-Input/4-Output
Video Distribution Amplifiers
-3.0
-75 -50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
-75 -50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
_______________________________________________________________________________________
1-Input/4-Output
Video Distribution Amplifiers
PIN
NAME
FUNCTION
MAX4137
MAX4138
1, 12, 13,
17, 24
1, 12, 13,
24
N.C.
2, 11
2, 11
VCCO
Positive Supply for Output Amplifiers. Connect to +5V.
3
3
OUT1
Output 1
4, 9, 18, 21
4, 9, 21
AGND
Analog Ground
5
5
OUT2
Output 2
6, 7
6, 7
VEEO
Negative Supply for Output Amplifiers. Connect to -5V.
8
8
OUT3
Output 3
10
10
OUT4
Output 4
14
14
SEL4
When low, enables output channel OUT4. When high, disables output channel OUT4.
15
15
SEL3
When low, enables output channel OUT3. When high, disables output channel OUT3.
16
16
VCCI
Positive Supply for Input Amplifier. Connect to +5V.
—
17
RF
Output of Input Amplifier
—
18
RG
Inverting Input
19
19
VEEI
Negative Supply for Input Amplifier. Connect to -5V.
20
20
IN+
Noninverting Input
22
22
SEL2
When low, enables output channel OUT2. When high, disables output channel OUT2.
23
23
SEL1
When low, enables output channel OUT1. When high, disables output channel OUT1.
No Connect. Not internally connected.
_______________Detailed Description
The MAX4137/MAX4138 are 1-input/4-output video distribution amplifiers. The MAX4137 is configured for a
fixed gain of +2, while the MAX4138 features external
gain control (feedback) for closed-loop gains of 2V/V or
greater.
Each output provides sufficient current to drive five
150Ω loads. However, distortion will increase when driving
multiple loads. The TTL/CMOS-compatible digital control
(SEL_ ) enables or disables each output amplifier. When
the SEL_ control input is low, the amplifier is enabled;
when it is high, the amplifier is disabled and presents a
high-impedance output. The enable/disable or
disable/enable time is under 25ns, which is useful
in multiplexing, pixel switching, or picture-in-picture
applications.
Each device has an input amplifier, which buffers the
input from any switching glitches that may be taking
place at the output stage, and provides a highimpedance, low-capacitance input. The separate input
buffer allows a true high output impedance when an
amplifier is disabled.
The outputs are protected against short circuits to
ground. However, power-dissipation limits preclude
shorting all output channels to ground. See the PowerDissipation Considerations section for details.
_______________________________________________________________________________________
7
MAX4137/MAX4138
______________________________________________________________Pin Description
MAX4137/MAX4138
1-Input/4-Output
Video Distribution Amplifiers
N.C.
1
+5VDC
0.1µF
75Ω*
MAX4137
VCCO
2
OUT1
3
OUT1
N.C.
24
SW1
SEL1
23
SW2
SEL2
22
GND
4
75Ω*
-5VDC
0.1µF
75Ω*
75Ω*
+5VDC
0.1µF
75Ω*
OUT2
5
AGND
21
IN
VEEO
6
VEEO
7
OUT3
8
GND
9
OUT4
10
VCCO
11
IN+
20
OUT2
RF
OUT4
N.C.
12
75Ω∗
RG
VEEI
19
AGND
18
N.C.
17
VCCI
16
OUT3
VIDEO
IN
SW3
SEL3
15
SW4
SEL4
14
-5VDC
0.1µF
+5VDC
0.1µF
N.C.
13
* TO TERMINATE TRANSMISSION LINE
Figure 1. MAX4137 Typical Operating Circuit
__________Applications Information
Grounding, Bypassing,
and PC Board Layout
To obtain the MAX4137/MAX4138’s full 185MHz bandwidth, Microstrip and Stripline techniques are recommended in most cases. To ensure the PC board does
not degrade the amplifier’s performance, design the
board for a frequency greater than 1GHz. Even with
very short traces, use these techniques at critical
points, such as inputs and outputs. Whether you use a
constant-impedance board or not, observe the following guidelines when designing the board:
8
• Do not use wire-wrap boards. They are too inductive.
• Do not use IC sockets. They increase parasitic
capacitance and inductance.
• In general, surface-mount components have shorter
leads and lower parasitic reactance, giving better
high-frequency performance than through-hole components.
• The PC board should have at least two layers, with
one side a signal layer and the other a ground plane.
• Keep signal lines as short and straight as possible.
Do not make 90° turns; round all corners.
• The ground plane should be as free from voids as
possible.
_______________________________________________________________________________________
1-Input/4-Output
Video Distribution Amplifiers
MAX4137/MAX4138
N.C.
1
+5VDC
0.1µF
75Ω*
VCCO
2
OUT1
3
N.C.
24
MAX4138
OUT1
SW1
SEL1
23
SW2
SEL2
22
AGND
4
75Ω*
-5VDC
0.1µF
75Ω*
75Ω*
+5VDC
0.1µF
OUT2
5
AGND
21
OUT2
IN
75Ω*
VEEO
6
VEEO
7
OUT3
8
AGND
9
OUT4
10
VCCO
11
VIDEO
IN
IN+
20
VEEI
19
RG
18
OUT3
RF
17
VCCI
16
OUT4
N.C.
12
SW3
SEL3
15
SW4
SEL4
14
0.1µF
RF
-5VDC
RG
0.1µF
+5VDC
N.C.
13
* TO TERMINATE TRANSMISSION LINE
Figure 2. MAX4138 Typical Operating Circuit
Driving Capacitive Loads
The MAX4137/MAX4138 provide maximum AC performance with no output load capacitance. This is the
case when they are driving a correctly terminated transmission line (i.e., a back-terminated 75Ω cable).
However, the MAX4137/MAX4138 are capable of
driving capacitive loads up to 10pF without oscillations,
but with reduced AC performance.
Driving large capacitive loads increases the chance of
oscillations in most amplifier circuits. This is especially
true for circuits with high loop gain, such as voltage followers. The amplifier’s output resistance and the load
capacitor combine to add a pole and excess phase to
the loop response. If the frequency of this pole is low
enough and phase margin is degraded sufficiently,
oscillations may occur.
A second problem when driving capacitive loads
results from the amplifier’s output impedance, which
looks inductive at high frequencies. This inductance
forms an L-C resonant circuit with the capacitive load,
which causes peaking in the frequency response and
degrades the amplifier’s gain margin.
The MAX4137/MAX4138 drive capacitive loads up to
10pF without oscillation. However, some peaking (in the
frequency domain) or ringing (in the time domain) may
occur (Figure 3).
_______________________________________________________________________________________
9
14
12
CLOSED-LOOP GAIN (dB)
RISO
10
VOUT
CL = 15pF
CL = 10pF
CL = 5pF
8
VIN
RL
CL
6
4
2
MAX4137
MAX4138
0
0.1M
1M
10M
100M
1G
FREQUENCY (Hz)
Figure 3. Effect of CLOAD on Frequency Response (without
RISO)
To drive larger-capacitance loads or to reduce ringing,
add an isolation resistor between the amplifier’s output
and the load, as shown in Figure 4.
The value of RISO depends on the circuit’s gain and the
capacitive load. Figure 5 shows the optional isolation
resistor (RISO) vs. capacitive load (CL). At the higher
capacitor values, the bandwidth is dominated by the
RC network, formed by RISO and CL.
Power-Dissipation Considerations
The MAX4137/MAX4138 can drive up to four outputs
simultaneously. Quiescent power dissipation is typically
520mW and 650mW maximum, respectively, with all
channels enabled. The maximum package power dissipation is rated at 1540mW.
In a typical application, four outputs drive a standard
video signal into a 150Ω load. The amount of power
added to the quiescent dissipation is minimal and no
special precautions are necessary.
However, each output driving the maximum 65mA into
30Ω will cause a power-dissipation increase of approximately 200mW. Therefore, you should not allow more
than three outputs to deliver that load simultaneously.
Similarly, one output shorted to ground will cause a
power-dissipation increase of 650mW. Only one output
can be shorted to ground without violating the package
power rating.
10
Figure 4. Capacitive-Load Driving Circuit
16
15
RISOLATION (Ω)
MAX4137/MAX4138
1-Input/4-Output
Video Distribution Amplifiers
14
13
12
11
10
10
40
70
100
130
160
190
220
CLOAD (pF)
Figure 5. Optimal Isolation Resistor (RISO) vs. CLOAD
In conclusion, during normal operation in a matchedload environment, the total power dissipation is well
within the package’s dissipation rating. The maximum
power dissipation is violated only if multiple channels
are driving the maximum current into minimum loads at
the same time.
______________________________________________________________________________________
1-Input/4-Output
Video Distribution Amplifiers
MAX4137/MAX4138
SC1M2
SC1M1
CAMERA 1
SUBCARRIER
(SC1)
75Ω
OUT1
SEL1
SEL2
OUT2
SEL3
OUT3
VIDEO
IN
SYNC
75Ω
75Ω
MONITOR1
OUT4
75Ω
SEL4
75Ω
MAX4137
MAX4138
SC1M4
SC1M3
SC2M2
SC2M1
VIDEO
75Ω
SYNC
75Ω
MONITOR2
OUT1
SEL1
SEL2
CAMERA 2
SUBCARRIER
(SC2)
75Ω
OUT2
IN
SEL3
MONITOR
INPUTS
75Ω
OUT3
OUT4
75Ω
SEL4
VIDEO
MAX4137
MAX4138
SC2M4
SC2M3
SYNC
75Ω
75Ω
MONITOR3
M2
M1
OUT1
75Ω
SEL2
OUT2
75Ω
SEL3
OUT3
75Ω
OUT4
75Ω
SEL1
COMPOSITE
SYNC
(FROM
GENLOCK)
IN
75Ω
VIDEO
SYNC
SEL4
75Ω
M4
M3
75Ω
MONITOR4
MAX4137
MAX4138
Figure 6. Two Cameras to Four Monitors Distribution Amplifier
______________________________________________________________________________________
11
MAX4137/MAX4138
1-Input/4-Output
Video Distribution Amplifiers
___________________Chip Information
TRANSISTOR COUNT: 625
SUBSTRATE CONNECTED TO VEE
________________________________________________________Package Information
DIM
D
0°- 8°
A
e
B
0.101mm
0.004in.
A1
C
L
A
A1
B
C
E
e
H
L
INCHES
MAX
MIN
0.104
0.093
0.012
0.004
0.019
0.014
0.013
0.009
0.299
0.291
0.050
0.419
0.394
0.050
0.016
DIM PINS
E
H
Wide SO
SMALL-OUTLINE
PACKAGE
(0.300 in.)
D
D
D
D
D
16
18
20
24
28
INCHES
MIN MAX
0.398 0.413
0.447 0.463
0.496 0.512
0.598 0.614
0.697 0.713
MILLIMETERS
MIN
MAX
2.35
2.65
0.10
0.30
0.35
0.49
0.23
0.32
7.40
7.60
1.27
10.00
10.65
0.40
1.27
MILLIMETERS
MIN
MAX
10.10 10.50
11.35 11.75
12.60 13.00
15.20 15.60
17.70 18.10
21-0042A
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.
12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600
© 1996 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.