19-1351; Rev 0; 3/98
MAX4201 Evaluation Kit
________________General Description
The MAX4201 evaluation kit (EV kit) simplifies evalua-
tion of the MAX4201 ultra-high-speed, low-power, low-
noise, open-loop buffer. The EV kit circuit demonstrates
the MAX4201 in the noninverting unity-gain configura-
tion. RF-style connectors (SMA) and 50Ω terminating
resistors are included for test equipment compatibility.
This EV kit can also be used to evaluate the MAX4200
and MAX4202 (contact Maxim for free samples). Note
that the MAX4201 has an internal 50Ω output termina-
tion resistor, and the MAX4202 has an internal 75Ω out-
put termination resistor, while the MAX4200 has no
internal output termination resistor (refer to the
MAX4200–MAX4205 data sheet for more information).
____________________________Features
o
780MHz -3dB Bandwidth
o
280MHz 0.1dB Gain Flatness
o
2.1nV/
√
Hz
Voltage Noise Density
o
0.8pA/
√
Hz
Current Noise Density
o
4200V/µs Slew Rate
o
Excellent Capacitive-Load-Driving Capability
o
Fully Assembled and Tested Surface-Mount
Board
Evaluates: MAX4200/MAX4201/MAX4202
Component List
DESIGNATION QTY
C1, C3
C2, C4
IN, OUT
R1
R2
U1
None
None
2
2
2
1
1
1
1
1
DESCRIPTION
10µF, 10V, 20% tantalum capacitors
AVX TAJB106M010 or
Sprague 293D106X0010B
0.1µF, 10% ceramic capacitors
SMA connectors
49.9Ω, 1% resistor
0Ω resistor
MAX4201ESA
MAX4201 PC board
MAX4200–MAX4205 data sheet
_______________Ordering Information
PART
MAX4201EVKIT
TEMP. RANGE
-40°C to +85°C
IC PACKAGE
8 SO
_________________________Quick Start
The MAX4201 EV kit is fully assembled and tested.
Follow these steps to verify board operation.
Do not
turn on the power supply until all connections are
completed.
1) The circuit requires supply voltages of ±4.0V to
±5.5V. For evaluation purposes, connect a +5V
supply to the pad labeled VCC and a -5V supply to
the pad labeled VEE. Connect the power-supply
grounds to the pad marked GND.
2) Connect the output marked OUT to an oscilloscope
through a terminated 50Ω cable.
3) Turn on the power supply. Apply a signal of ±3.3V
maximum to the SMA connector marked IN+.
4) Verify the output signal on the oscilloscope. (Note:
When using a 50Ω terminated oscilloscope input,
the output amplitude observed on the oscilloscope
will be half that on the input. This is due to the volt-
age divider formed by the internal 50Ω back-termi-
nating resistor and the oscilloscope input termina-
tion impedance.)
__________________Component Suppliers
SUPPLIER
AVX
SPRAGUE
PHONE
(803) 946-0690
(603) 224-1961
FAX
(803) 626-3123
(603) 224-1430
Note:
Please indicate that you are using the MAX4201 when
contacting these component suppliers.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
MAX4201 Evaluation Kit
Evaluates: MAX4200/MAX4201/MAX4202
_______________Detailed Description
Layout Considerations
The MAX4201 EV kit layout has been optimized for
high-speed signals and low distortion with careful atten-
tion given to grounding, power-supply bypassing, and
signal-path layout. The small, surface-mount, ceramic
bypass capacitors (C2, C4) have been placed as close
to the MAX4201 supply pins as possible. A continuous
ground plane has been maintained under the IC to
reduce inductance to the signal return path.
When using the MAX4200, replace R2 with an appropri-
ate terminating resistor.
1
N.C.
N.C.
8
U1
2
N.C.
V
CC
7
C2
0.1µF
C1
10µF
10V
VCC
MAX4201
IN
R1
49.9Ω
3
IN
R
T
50Ω
OUT
6
R2
0Ω
OUT
VEE
4
C3
10µF
10V
C4
0.1µF
V
EE
N.C.
5
GND
Figure 1. MAX4201 EV Kit Schematic
2
_______________________________________________________________________________________
PCB设计
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