2
dc2322afa
DEMO MANUAL DC2322A
1. Connect all test equipment as shown in Figure 1.
2. Set the power supply output voltage to 5V, and set the
current limit to 150mA.
3. Connect the ground and V
CC
turrets to the power sup-
ply. BE SURE TO CONNECT THE V
CC
TURRET BEFORE
THE EN TURRET TO ENSURE THAT THE PART DOES
NOT GET DAMAGED. ALSO, REMOVE POWER FROM
EN TURRET BEFORE REMOVING POWER FROM THE
V
CC
TURRET.
4. Connect the EN turret to the power supply.
Quick stArt proceDure
notes on test eQuipMent AnD setup
n
High performance signal generators with low harmonic
outputs should be used for 2-tone measurements. Oth
-
erwise, low-pass filters at the signal generator outputs
should be used to suppress harmonics.
n
High quality combiners should be used to present a
broadband 50Ω termination on all ports as well as provide
good port-to-port isolation. Adding attenuator pads further
improves source isolation and helps prevent the signal
generators from producing intermodulation products.
n
Spectrum analyzers can produce significant internal
distortion products if they are overdriven. Generally,
spectrum analyzers are designed to operate at their
best with about –30dBm to –40dBm at their input. The
spectrum analyzer’s input attenuation setting should be
used to avoid saturating the instrument.
n
Set the spectrum analyzer’s input attenuation depending
on the spectrum analyzer used.
n
Before performing measurements on the DUT, the
system performance should be evaluated to ensure that
a clean input signal is obtained and that the spectrum
analyzer’s internal distortion is minimized.
5. Set the LO signal generator to provide a 4900MHz CW
signal at about 0dBm to the demo board’s LO port.
6. Set the RF signal generators
to provide one 899MHz CW
signal and one 901MHz CW signal. The signals should be
applied to the 2-way combiner. The output of the combiner
should be applied to the demoboard’s IN port. The two
tones should be set to –10dBm each at the mixer’s IN port.
7. Set the spectrum analyzer’s center frequency to 5.8GHz.
8. Perform various measurements (Conversion Gain,
OIP3, LO leakage, etc.)
pArts list
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
1 2 C1, C2 CAP., 1000pF, C0G, 50V, 5%, 0402 MURATA, GRM1555C1H102JA01
2 0 C3 DNI, 0402
3 1 C4 CAP., 100pF, C0G, 50V, 5%, 0402 MURATA, GRM1555C1H101JA01
4 1 C5 CAP., 0.3pF, C0G, 50V, ±0.05pF, 0402 AVX, 04021J0R3ZBS
5 1 C6 CAP., 0.2pF, C0G, 50V, ±0.05pF, 0402 AVX, 04021J0R2ZBS
6 1 C7 CAP., 0.01μF, X7R, 50V, 10%, 0402 MURATA, GRM155R71H103KA88
7 1 C8 CAP., 1μF, X7R,10V,10%, 0603 MURATA, GRM188R71A105KA61
8 4 E1-E4 TEST POINT, TURRET, .064 MTG. HOLE MILL-MAX,2308-2-00-80-00-00-07-0
9 3 J1-J3 CON., SMA, 50Ω, EDGE-LANCH E.F. JOHNSON, 142-0701-851
10 2 L1, L2 RES., 0Ω, 0402 VISHAY, CRCW04020000Z0ED
11 1 R1 RES., 2.61k, 1/16W, 1%, 0402 VISHAY, CRCW04022K61FKED
12 1 T1 TRANS., 50Ω, 4.5MHz – 3000MHz, TC1-1-13M+ MINI CIRCUITS, TC1-1-13M+
13 1 U1 IC., HIGH DYNAMIC RANGE ACTIVE MIXER LINEAR TECH., LTC5576IUF
