19-2001; Rev 1; 9/99
IT
TION K
VALUA
E
BLE
AVAILA
1-Input/4-Output
Video Distribution Amplifiers
General Description
The MAX4137/MAX4138 are 1-input/4-output voltage-
feedback 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 multiplex-
ing 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 distribu-
tion amplifier, see the MAX4135/MAX4136 data sheet.
o
Fixed Gain of 2V/V (MAX4137)
External Gain Set (MAX4138)
o
High Speed:
185MHz -3dB Bandwidth (MAX4137)
140MHz -3dB Bandwidth (MAX4138)
1000V/µs Slew Rate
o
High Full-Power Bandwidths (V
OUT
= 2Vp-p):
185MHz (MAX4137)
140MHz (MAX4138)
o
0.1dB Gain Flatness to 40MHz
o
Low Differential Gain/Phase Error: 0.10%/0.02°
o
High-Impedance Output Disable
Features
MAX4137/MAX4138
Ordering Information
PART
MAX4137EWG
MAX4138EWG
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
24 Wide SO
24 Wide SO
Selector Guide
PART
MAX4135
MAX4136
MAX4137
MAX4138
NO. OF
OUTPUTS
6
6
4
4
GAIN
(V/V)
Fixed 2
≥2
Fixed 2
≥2
-3dB
BANDWIDTH
(MHz)
185
140
185
140
Pin Configuration
TOP VIEW
N.C. 1
VCCO 2
24 N.C.
23 SEL1
22 SEL2
21 AGND
Applications
Video Switching and Distribution
High-Resolution RGB CRT Monitors
High-Speed Analog Bus Drivers
RF Signal Processing
Composite Video Preamplifiers
OUT1 3
AGND 4
OUT2 5
VEEO 6
VEEO 7
OUT3 8
AGND 9
OUT4 10
VCCO 11
N.C. 12
MAX4137
MAX4138
20 IN+
19 VEEI
18 AGND (RG)
17 N.C. (RF)
16 VCCI
15 SEL3
14 SEL4
13 N.C.
SO
( ) ARE FOR MAX4138.
________________________________________________________________
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.
1-Input/4-Output
Video Distribution Amplifiers
MAX4137/MAX4138
ABSOLUTE MAXIMUM RATINGS
Power-Supply Voltage (V
CC
to V
EE
).......................................12V
Voltage on Any Input Pin to GND .......(V
CC
+ 0.3V) to (V
EE
- 0.3V)
Short-Circuit Duration to GND....................................Continuous
Continuous Power Dissipation (T
A
= +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, 10s) .................................+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
(V
CC
= +5V, V
EE
= -5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Input Offset Voltage
Input Offset Voltage Match
Between Channels
Input Offset Voltage Drift
Input Bias Current
Common-Mode Input
Resistance
Common-Mode Input
Capacitance
Input Voltage Noise
Input Current Noise
Input Capacitance
Common-Mode Input Voltage
Range
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
Quiescent Supply Current
Output Voltage Swing
Output Current Drive
SEL
High Threshold
SEL
Low Threshold
SEL
Input Current
TCV
OS
I
B
R
IN(CM)
C
IN(CM)
e
n
i
n
C
IN
V
CM
CMRR
PSRR
I
SY
V
OUT
I
OUT
V
IH
V
IL
I
SEL
0.8
1
5
V
CM
= ±2.5V
V
S
= ±4.75V to ±5.25V
V
IN
= 0V
R
L
= 150Ω
R
L
= 30Ω
All channels off
All channels on
Positive
Negative
2.2
-2.0
45
55
SYMBOL
V
OS
CONDITIONS
V
OUT
= 0V, R
L
= 150Ω
V
OUT
= 0V, R
L
= 150Ω
V
OUT
= 0V, R
L
=
∞
V
OUT
= 0V, R
L
=
∞,
V
IN
= -V
OS
MAX4138, either input
MAX4138, either input
f = 1MHz
f = 1MHz to 100MHz
f = 1MHz
f = 1MHz to 100MHz
MIN
TYP
1
1
30
4.5
5
2
7
88
2.4
30
2
±2.5
60
65
30
47
2.6
-2.5
65
2.0
48
70
13
MAX
10
8
UNITS
mV
mV
µV/°C
µA
MΩ
pF
nV/√Hz
µV
RMS
pA/√Hz
nA
RMS
pF
V
dB
dB
mA
V
mA
V
V
µA
2
_______________________________________________________________________________________
1-Input/4-Output
Video Distribution Amplifiers
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= -5V, A
VCL
= 2V/V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= 25°C.)
PARAMETER
-3dB Bandwidth
Full-Power Bandwidth
0.1dB Bandwidth
Slew Rate
Settling Time
Differential Gain
Differential Phase
All-Hostile Crosstalk
Off Isolation
Channel Switching Off Time
Channel Switching On Time
Digital Switching Feedthrough
Spurious-Free Dynamic Range
Output On-Resistance
Output Off-Resistance
Output On-Capacitance
Output Off-Capacitance
SFDR
R
OUT
R
OUT
C
OUT(ON)
C
OUT(OFF)
t
OFF
t
ON
V
IN
= 0V
DC
f
C
= 5MHz, A
VCL
= 2V/V, V
OUT
= 2Vp-p,
R
L
= 100Ω
f = DC, A
VCL
= 2V/V
f = DC, A
VCL
= 2V/V
SR
t
s
DG
DP
SYMBOL
BW
-3dB
FPBW
CONDITIONS
V
OUT
≤
0.1V
RMS,
A
VCL
= 2V/V
V
OUT
= 2Vp-p
,
A
VCL
= 2V/V
A
VCL
= 2V/V
-2V
≤
V
OUT
≤
+2V
-1V
≤
V
OUT
≤
+1V,
R
L
=150Ω, A
VCL
=2V/V
f = 3.58MHz
,
A
VCL
= 2V/V
f = 3.58MHz
,
A
VCL
= 2V/V
V
IN
= 1Vp-p, f = 30MHz
V
IN
= 1Vp-p, f = 30MHz
to 0.1%
to 0.01%
MAX4137
MAX4138
MAX4137
MAX4138
MAX4137
MAX4138
MAX4137
MAX4138
MIN
TYP
185
140
185
140
40
1000
17
40
0.10
0.10
0.02
0.02
-50
75
25
25
±1
-72
1
200
2
3.5
MAX
UNITS
MHz
MHz
MHz
V/µs
ns
%
degrees
dB
dB
ns
ns
mV
dBc
Ω
kΩ
pF
pF
MAX4137/MAX4138
_______________________________________________________________________________________
3
1-Input/4-Output
Video Distribution Amplifiers
MAX4137/MAX4138
__________________________________________Typical Operating Characteristics
(V
CC
= +5V, V
EE
= -5V, R
L
= 150Ω, T
A
= +25°C, unless otherwise noted.)
MAX4137
SMALL-SIGNAL GAIN
vs. FREQUENCY (A
VCL
= +2)
MAX4137/8 TOC-01
MAX4138
SMALL-SIGNAL GAIN
vs. FREQUENCY (A
VCL
= +2)
MAX4137/8 TOC-02
MAX4138
SMALL-SIGNAL GAIN
vs. FREQUENCY (A
VCL
= +10)
10
9
8
GAIN (dB)
7
6
5
4
3
2
1
MAX4137/8 TOC-03
10
9
8
7
GAIN (dB)
6
5
4
3
2
1
0
100k
1M
10M
100M
11
10
9
8
GAIN (dB)
7
6
5
4
3
2
1
11
1G
100k
1M
10M
100M
1G
100k
1M
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
MAX4137
LARGE-SIGNAL GAIN
vs. FREQUENCY (A
VCL
= +2)
MAX4137/8 TOC-04
MAX4138
LARGE-SIGNAL GAIN
vs. FREQUENCY (A
VCL
= +2)
MAX4137/8 TOC-05
OFF-ISOLATION vs. FREQUENCY
-25
-35
-45
GAIN (dB)
-55
-65
-75
-85
-95
-105
-115
MAX4137/8 TOC-06
11
10
9
8
GAIN (dB)
7
6
5
4
3
2
1
V
OUT
= 2Vp-p
11
10
9
8
GAIN (dB)
7
6
5
4
3
2
1
V
OUT
= 2Vp-p
-15
100k
1M
10M
100M
1G
100k
1M
10M
100M
1G
100k
1M
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
ALL-HOSTILE CROSSTALK
vs. FREQUENCY
MAX4137/8 TOC-7
CLOSED-LOOP OUTPUT IMPEDANCE
vs. FREQUENCY
MAX4137-08
INPUT VOLTAGE NOISE vs. FREQUENCY
MAX4137-8
-10
-20
ALL-HOSTILE CROSSTALK (dB)
-30
-40
-50
-60
-70
-80
-90
-100
-110
100k
1M
10M
100M
FREQUENCY (Hz)
800
250
80
IMPEDANCE (Ω)
25
8.0
2.5
0.8
0.25
0.08
100k
1M
10M
100M
FREQUENCY (Hz)
100
NOISE (nV/
√Hz
)
10
1
1
10
100
1k
10k 100k 1M
10M
FREQUENCY (Hz)
4
_______________________________________________________________________________________
1-Input/4-Output
Video Distribution Amplifiers
____________________________Typical Operating Characteristics (continued)
(V
CC
= +5V, V
EE
= -5V, R
L
= 150Ω, T
A
= +25°C, unless otherwise noted.)
MAX4137/MAX4138
MAX4137
LARGE-SIGNAL PULSE RESPONSE
(A
VCL
= +2)
MAX4137-10
MAX4138
LARGE-SIGNAL PULSE RESPONSE
(A
VCL
= +2)
MAX4137-11
IN
VOLTAGE (500mV/div)
GND
VOLTAGE (500mV/div)
IN
GND
OUT
GND
OUT
GND
TIME (10ns/div)
TIME (10ns/div)
MAX4137
SMALL-SIGNAL PULSE RESPONSE
(A
VCL
= +2)
MAX4137-12
MAX4138
SMALL-SIGNAL PULSE RESPONSE
(A
VCL
= +2)
MAX4137-13
IN
VOLTAGE (50mV/div)
GND
VOLTAGE (50mV/div)
IN
GND
OUT
GND
OUT
GND
TIME (10ns/div)
TIME (10ns/div)
DIGITAL FEEDTHROUGH
MAX4137-14
SEL
(1V/div)
OUT
(45mV/div)
TIME (20ns/div)
_______________________________________________________________________________________
5
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