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MAX4135 Datasheet(PDF) 2 Page - Maxim Integrated Products

Part No. MAX4135
Description  RF-style connectors (SMA) and 75Ω terminating resistors are included for video test to order free samples
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX4135 Datasheet(HTML) 2 Page - Maxim Integrated Products

   
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MAX4136, MAX4137,
MAX4138 Configuration
The MAX4135 EV kit can easily be configured to evalu-
ate the MAX4136, MAX4137, or MAX4138. The primary
differences between the four parts are the number of
output channels (four or six), and either fixed (2V/V) or
adjustable gain (
≥2V/V). Refer to Table 1 and to the
MAX4135/MAX4136 and MAX4137/MAX4138 data
sheets for further information.
Evaluating the MAX4136
To evaluate the MAX4136, simply order a free sample
(MAX4136EWG), replace the MAX4135 with the
MAX4136 on the PC board, and select and install the
gain-setting resistors for the desired gain.
Evaluating the MAX4137
To evaluate the MAX4137, order a free sample
(MAX4137EWG) and replace the MAX4135 with the
MAX4137 on the PC board. Keep the 0
Ω resistor in RG
and leave RF open. Note that the four output channels
correspond to those labeled OUT2–OUT5, and are
selected via SEL2–SEL5 on SW1 (see Table 2).
Evaluating the MAX4138
To evaluate the MAX4138, simply order a free sample
(MAX4138EWG), replace the MAX4135 with the
MAX4138 on the PC board, and select and install the
gain-setting resistors for the desired gain. Note that the
four output channels correspond to those labeled
OUT2–OUT5, and are selected via SEL2–SEL5 on SW1
(see Table 2).
Layout Considerations
The MAX4135 EV kit layout has been optimized for
high-speed signals and low distortion, with careful
attention given to grounding, power-supply bypassing,
and signal-path layout. The small, surface-mount,
ceramic bypass capacitors (C2, C4, C5, and C6) have
been placed as close to the four MAX4135 supply pins
as possible. The ground plane has been removed
around and under the MAX4135 to reduce stray capac-
itance. The removal of ground plane around the input
SMA connector reduces distortion.
MAX4135 Evaluation Kit
2
_______________________________________________________________________________________
Table 1. Gain Configuration
Table 2. Output Channel Selection
6
6
No. OF
OUTPUTS
User
selected
Open
RF
MAX4136
MAX4135
PART
≥ 2
Fixed at 2
GAIN
V/V
User
selected
0
RG
≥ 2
Fixed at 2
User
selected
0
4
4
User
selected
Open
MAX4138
MAX4137
S
SE
EL
L1
1
No. OF
OUTPUTS
PART
S
SE
EL
L2
2
SW1 SWITCH SETTINGS
S
SE
EL
L4
4
S
SE
EL
L3
3
S
SE
EL
L6
6
S
SE
EL
L5
5
OUT2
OUT1
OUT4
OUT3
OUT6
6
OUT5
MAX4135
OUT2
OUT1
OUT4
OUT3
OUT6
6
OUT5
OUT1
OUT3
OUT2
4
OUT4
MAX4137
MAX4136
OUT1
OUT3
OUT2
4
OUT4
MAX4138


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