_______________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.
________________________Applications
Video Switching and Distribution
High-Resolution RGB CRT Monitors
High-Speed Analog Bus Drivers
RF Signal Processing
Composite Video Preamplifiers
____________________________Features
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
MAX4137/MAX4138
1-Input/4-Output
Video Distribution Amplifiers
________________________________________________________________
Maxim Integrated Products
1
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
N.C.
SEL1
SEL2
AGND
AGND
OUT1
VCCO
N.C.
TOP VIEW
IN+
VEEI
AGND (RG)
N.C. (RF)
OUT3
VEEO
VEEO
OUT2
16
15
14
13
9
10
11
12
VCCI
SEL3
SEL4
N.C.
N.C.
VCCO
OUT4
AGND
SO
MAX4137
MAX4138
( ) ARE FOR MAX4138.
19-2001; Rev 0; 6/96
PART
MAX4137
EWG
MAX4138
EWG
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
24 Wide SO
24 Wide SO
EVALUATION KIT
AVAILABLE
______________Ordering Information
_________________Pin Configurations
_____________________Selector Guide
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
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
MAX4137/MAX4138
1-Input/4-Output
Video Distribution Amplifiers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.)
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.
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, 10sec) .............................+300°C
V
IL
R
L
= 30
V
OUT
= 0V, R
L
= 150
V
IN
= 0V
V
S
= ±4.75V to ±5.25V
V
CM
= ±2.5V
f = 1MHz
f = 1MHz to 100MHz
f = 1MHz
MAX4138, either input
V
OUT
= 0V, R
L
= 150
V
OUT
= 0V, R
L
=
V
OUT
= 0V, R
L
=
, V
IN
= -V
OS
MAX4138, either input
f = 1MHz to 100MHz
CONDITIONS
µA
1
5
I
SEL
SEL Input Current
V
0.8
SEL Low Threshold
V
2.0
V
IH
SEL High Threshold
mA
45
65
I
OUT
Output Current Drive
2.2
2.6
mA
47
60
I
SY
Quiescent Supply Current
30
40
dB
55
65
PSRR
Power-Supply Rejection Ratio
dB
60
CMRR
Common-Mode Rejection Ratio
V
±2.5
V
CM
Common-Mode Input Voltage
Range
pF
2
C
IN
Input Capacitance
nA
RMS
30
i
n
Input Current Noise
mV
1
8.0
V
OS
Input Offset Voltage
pA/
Hz
2.4
µV
RMS
88
e
n
Input Voltage Noise
nV/
Hz
7
pF
2
C
IN(CM)
Common-Mode Input
Capacitance
mV
1
6
Input Offset Voltage Match
Between Channels
µV/°C
30
TCV
OS
Input Offset Voltage Drift
µA
4.5
10
I
B
Input Bias Current
M
5
R
IN(CM)
Common-Mode Input
Resistance
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
R
L
= 150
V
-2.0
-2.5
V
OUT
Output Voltage Swing
Positive
Negative
All channels off
All channels on
MAX4137/MAX4138
1-Input/4-Output
Video Distribution Amplifiers
_______________________________________________________________________________________
3
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.)
V
OUT
0.1V
RMS,
A
VCL
= 2V/V
f = DC, A
VCL
= 2V/V
f = DC, A
VCL
= 2V/V
f
C
= 5MHz, A
VCL
= 2V/V, V
OUT
= 2Vp-p,
R
L
= 100
V
IN
= 1Vp-p, f = 30MHz
V
IN
= 1Vp-p, f = 30MHz
V
IN
= 0V
DC
-1V
V
OUT
+1V,
R
L
=150
, A
VCL
=2V/V
V
OUT
= 2Vp-p
,
A
VCL
= 2V/V
A
VCL
= 2V/V
-2V
V
OUT
+2V
CONDITIONS
pF
2
C
OUT(ON)
Output On-Capacitance
k
200
R
OUT
Output Off-Resistance
1
R
OUT
Output On-Resistance
dBc
-72
SFDR
Spurious-Free Dynamic Range
mV
±1
Digital Switching Feedthrough
ns
25
t
ON
Channel Switching On Time
ns
25
t
OFF
Channel Switching Off Time
MHz
140
BW
-3dB
-3dB Bandwidth
185
dB
75
Off Isolation
dB
-50
All-Hostile Crosstalk
ns
40
t
s
Settling Time
17
185
MHz
140
FPBW
Full-Power Bandwidth
MHz
40
0.1dB Bandwidth
V/µs
1000
SR
Slew Rate
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
MAX4137
MAX4138
MAX4137
MAX4138
to 0.1%
to 0.01%
MAX4137
f = 3.58MHz
,
A
VCL
= 2V/V
MAX4138
%
0.10
DG
Differential Gain
0.10
MAX4137
f = 3.58MHz
,
A
VCL
= 2V/V
MAX4138
degrees
0.02
DP
Differential Phase
0.02
pF
3.5
C
OUT(OFF)
Output Off-Capacitance
MAX4137/MAX4138
1-Input/4-Output
Video Distribution Amplifiers
4
_______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(V
CC
= +5V, V
EE
= -5V, R
L
= 150
, T
A
= +25°C, unless otherwise noted.)
10
0
100k
100M
1M
10M
1G
MAX4137
SMALL-SIGNAL GAIN
vs. FREQUENCY (A
VCL
= +2)
2
MAX4137/8 TOC-01
FREQUENCY (Hz)
GAIN (dB)
4
6
8
9
1
3
5
7
11
1
100k
100M
1M
10M
1G
MAX4138
SMALL-SIGNAL GAIN
vs. FREQUENCY (A
VCL
= +2)
3
MAX4137/8 TOC-02
FREQUENCY (Hz)
GAIN (dB) 5
7
9
10
2
4
6
8
11
1
100k
100M
1M
10M
1G
MAX4138
SMALL-SIGNAL GAIN
vs. FREQUENCY (A
VCL
= +10)
3
MAX4137/8 TOC-03
FREQUENCY (Hz)
GAIN (dB) 5
7
9
10
2
4
6
8
11
1
100k
100M
1M
10M
1G
MAX4137
LARGE-SIGNAL GAIN
vs. FREQUENCY (A
VCL
= +2)
3
MAX4137/8 TOC-04
FREQUENCY (Hz)
GAIN (dB)
5
7
9
10
2
4
6
8
V
OUT
= 2Vp-p
-110
-100
100k
100M
1M
10M
-80
MAX4137/8 TOC-7
FREQUENCY (Hz)
ALL-HOSTILE CROSSTALK (dB)
-60
-40
-90
-70
-50
-30
-20
-10
ALL-HOSTILE CROSSTALK
vs. FREQUENCY
11
1
100k
100M
1M
10M
1G
MAX4138
LARGE-SIGNAL GAIN
vs. FREQUENCY (A
VCL
= +2)
3
MAX4137/8 TOC-05
FREQUENCY (Hz)
GAIN (dB)
5
7
9
10
2
4
6
8
V
OUT
= 2Vp-p
-15
-115
100k
100M
1M
10M
1G
OFF-ISOLATION vs. FREQUENCY
-95
MAX4137/8 TOC-06
FREQUENCY (Hz)
GAIN (dB)
-75
-55
-35
-25
-105
-85
-65
-45
0.08
0.25
100k
100M
1M
10M
CLOSED-LOOP OUTPUT IMPEDANCE
vs. FREQUENCY
2.5
MAX4137-08
FREQUENCY (Hz)
IMPEDANCE (
)
25
250
0.8
8.0
80
800
1
10
100
1
1k
10
100
10k 100k
1M
10M
INPUT VOLTAGE NOISE vs. FREQUENCY
MAX4137-8
FREQUENCY (Hz)
NOISE (nV/
Hz
)
MAX4137/MAX4138
1-Input/4-Output
Video Distribution Amplifiers
_______________________________________________________________________________________
5
MAX4137
LARGE-SIGNAL PULSE RESPONSE
(A
VCL
= +2)
TIME (10ns/div)
VOLTAGE (500mV/div)
GND
GND
IN
OUT
MAX4137-10
MAX4138
SMALL-SIGNAL PULSE RESPONSE
(A
VCL
= +2)
TIME (10ns/div)
VOLTAGE (50mV/div)
GND
GND
MAX4137-13
IN
OUT
MAX4138
LARGE-SIGNAL PULSE RESPONSE
(A
VCL
= +2)
TIME (10ns/div)
VOLTAGE (500mV/div)
GND
GND
MAX4137-11
IN
OUT
MAX4137
SMALL-SIGNAL PULSE RESPONSE
(A
VCL
= +2)
TIME (10ns/div)
GND
GND
VOLTAGE (50mV/div)
MAX4137-12
IN
OUT
DIGITAL FEEDTHROUGH
TIME (20ns/div)
SEL
(1V/div)
OUT
(45mV/div)
MAX4137-14
____________________________Typical Operating Characteristics (continued)
(V
CC
= +5V, V
EE
= -5V, R
L
= 150
, T
A
= +25°C, unless otherwise noted.)
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