6
dc1984af
DEMO MANUAL DC1984A
Figure 6. Proper Equipment Setup for Noise Figure Measurement
5V DC
POWER
SUPPLY
+
–
SIGNAL
GENERATOR
NOISE
SOURCE
BPF
3dB
BPF
3dB
BPF
6dB
NOISE
FIGURE
METER
measurement equipment anD setup
quick start proceDure
Demonstration circuit 1984A is easy to set up to evaluate
the performance of the LTC5510. Refer to Figure 4, Figure
5 and Figure 6 for proper equipment connections.
NOTE. Care should be taken to never exceed absolute
maximum input ratings. Make all connections with RF
and DC power off.
Return Loss Measurements
1. Configure the Network Analyzer for return loss mea-
surement, set appropriate frequency range, and set the
test signal to 0dBm.
2. Calibrate the Network Analyzer.
3. Connect all test equipment as shown in Figure 4 with
the DC power supply turned off.
4. Increase the DC power supply voltage to 5V, and verify
that the total current consumption is close to the figure
listed in the Performance Summary. The supply voltage
should be confirmed at the demo board V
CC
and GND
terminals to account for test lead ohmic losses.
5. Terminate unused demo board ports in 50Ω. Measure
return losses of the IN, LO and OUT ports.