MAX1479_1 Datasheet, PDF (2/6 Pages) Maxim Integrated Products – Evaluation Kit

MAX1479 Evaluation Kit
Component List (continued)
DESIGNATION QTY
DESCRIPTION
L2 (315MHz)
1
22nH ±5% inductor (0603)
Coilcraft 0603CS-22NXJB
L2 (433MHz)
1
18nH ±5% inductor (0603)
Coilcraft 0603CS-18NXJB
R1
1 ^{5kΩ potentiometer}
BC Components SM4W502
R2
0 ^{0Ω resistor (0603), any,}
not installed
R3
1 5.1Ω ±5% resistor (0603), any
R4
1 0Ω resistor (0603), any
Antenna
(315MHz)
315MHz 1/4-wave whip antenna,
0 not provided
Lynx ANT-315-CW-RH
Antenna
(433MHz)
433MHz 1/4-wave whip antenna,
1 not provided
Lynx ANT-433-CW-RH
ANTENNA_OUT 1 ^{RP-SMA connector}
Linx CONREVSMA001
BAT1
1 ^{Battery holder}
MPD BA2032
Battery
1 ^{Coin-cell battery}
Panasonic BR2032
Component Suppliers
SUPPLIER
PHONE
FAX
Coilcraft
800-322-2645
847-639-1469
Crystek
800-237-3061
941-561-1025
Hong Kong Crystal 852-2412-0121
852-2498-5908
Murata
800-831-9172
814-238-0490
Note: Indicate you are using the MAX1479 when contacting
these manufacturers.
Quick Start
The following procedure allows for proper device
evaluation.
Required Test Equipment
• Regulated power supply capable of providing +3.0V
• Spectrum analyzer such as the Agilent 8562E
• Optional ammeter for measuring supply current
• Power meter such as the Agilent EPM-441A
DESIGNATION QTY
DESCRIPTION
REF_IN
SMA connector top mount, not installed
1 Digi-Key J500-ND
Johnson 142-0701-201
RF_OUT
U1
VDD, VSS,
ENABLE,
DATA_IN,
CKOUT
SMA connector top mount
1 Digi-Key J500-ND
Johnson 142-0701-201
1 MAX1479ATE
Test points
5 _{Mouser 151-203 or equivalent}
Y1 (315MHz)
Crystal 9.84375MHz
1
Hong Kong Crystal
SSL9843750E03FAFZ800 or
Crystek 017000
Y1 (433MHz)
—
—
Crystal 13.56MHz
1
Hong Kong Crystal
SSM1356000E03FAFZ800 or
Crystek 017001
10
Shunt (JU1)
Digi-Key S9000-ND or equivalent
1 MAX1479 EV kit PC board
Connections and Setup
This section provides a step-by-step guide to operating
the EV kit and testing the device’s functionality. Do not
turn on the DC power until all connections are made:
1) Connect a DC supply set to +3.0V, through an
ammeter, to the VDD and VSS terminals on the EV
kit. Do not turn on the supply.
2) Connect the RF_OUT SMA connector to the spec-
trum analyzer. Set the analyzer to a center frequency
of 315MHz (or 433.92MHz) and a span of 1MHz.
3) Turn on the DC supply. The spectrum analyzer
should display a peak of about +10dBm at
315MHz (or 433.92MHz).
4) Disconnect the spectrum analyzer and connect
the power meter instead. Measure the output
power and also the current draw.
5) Calculate the efficiency. This is done using the
following equation:
Efficiency = 10ˆ^(POUT^{/10)/(V x I)}
For example, for a +10.8dBm output, and a
10.9mA (at 3.0V) current, the efficiency is 37%.
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