MAX2671EVKIT Maxim Integrated Products, MAX2671EVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX2671EVKIT
• Description: RF Modules & Development Tools MAX2671 EVAL KIT MAX2671 EVAL KIT
• Manufacturer: Maxim Integrated Products

Specifications of MAX2671EVKIT

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1) Verify the DC power supply is set to less than +5.5V
2) Verify the SHDN jumper is in the “V
3) Connect a signal generator to the IFIN connector
4) Connect a second signal generator to the LO input
5) Connect the RF output of the EV kit to the spectrum
6) To assist in troubleshooting, verify the correct volt-
1) Set the spectrum analyzer’s center frequency to
2) Set the marker position to the peak level.
3) Read the output power of the center frequency. This
MAX2660/MAX2661/MAX2663/MAX2671
Evaluation Kits
Table 1. Nominal DC Voltages
2
PIN NUMBER
before attaching the supply to the EV kit. A good
starting voltage is +3.0V.
using an SMA cable. As with any precision RF con-
nector, be careful while threading the connector. For
optimal performance, consult the connector manu-
facturer’s specifications for torque recommendation.
Set the generator’s output to 70MHz at -30dBm
power level.
connector using an SMA cable. Set the generator’s
output to 970MHz at -5dBm power level (use
-10dBm for the MAX2671 EV Kit).
analyzer using an SMA cable. Take care to use qual-
ity connector adapters for the spectrum analyzer’s
input. Avoid using BNC-type connectors due to their
high VSWR while operating in the gigahertz range.
ages on the PC board with a multimeter. Use Table 1
to verify correct node voltage during proper opera-
tion.
900MHz, with a span of 30MHz.
should be -28dBm to -21dBm, depending on which
device is used. The output frequency is equal to the
algebraic difference of the LO and IF frequencies.
The power is equal to the IFIN input power plus the
conversion gain of the upconverter mixer. See Table
2 for the typical conversion gain of each device.
_______________________________________________________________________________________
1
2
3
4
5
6
PIN NAME
RF OUT
SHDN
GND
IFIN
V
LO
CC
Connections and Setup
NOMINAL DC VOLTAGE (V)
(V
0
+1.37
V
+2.7 to +5.5
V
CC
CC
CC
for normal operation
- 0.4) to (V
CC
” position.
CC
Analysis
- 1.0)
Table 2. Typical Conversion Gain
Figure 1 is the schematic for the EV kit as shipped. The
output matching components, L1, L2, C5, and C6, are
optimized for an output frequency of 900MHz.
Capacitors C1 and C2 are DC blocking capacitors for
the IFIN and LO input ports. To reduce the possibility of
noise pickup, resistor R1 and capacitor C8 form a low-
pass filter at the SHDN pin.
Capacitors C3, C4, C7, C9, and C10 form the V
decoupling network. Note the location of each compo-
nent. Capacitor C10, a 10µF tantalum type, is located
near the V
node for distribution of V
and the output pull-up inductor L2. Both of these sup-
ply points need separate bypass capacitors as well as
separate traces on the PC board. This is prudent prac-
tice to curtail crosstalk in high-frequency systems.
The EV kit is easily configured for use with any of the
MAX2660/MAX2661/MAX2663/MAX2671 devices. Each
of these devices offers different performance levels for
system optimization.
To configure the EV kit for a different device, use
appropriate surface-mount rework equipment to
remove the existing IC from the PCB. Take care to
ensure that the package temperature does not exceed
the limits listed in the Absolute Maximum Ratings sec-
tion of the MAX2660/MAX2661/MAX2663/MAX2671/
MAX2673 data sheet. Install the new device using
appropriate surface-mount equipment and techniques.
See Table 3 for the correct component values for the
desired operating frequency and device type.
Changing the EV kit to operate at frequencies other
than listed in Table 3 involves matching each device’s
output impedance to 50Ω at the frequency of interest.
MAX2660
MAX2661
MAX2663
MAX2671
PART
CC
input test point. This serves as the central
Operation at Other Frequencies
Changing to Different Devices
CONVERSION GAIN (dB) AT 900MHz
Detailed Description
Modifying the EV Kit
CC
to the mixer’s supply pin
+10.7
+11.2
+7.0
+3.4
CC