Logarithmic Intercept -74.7
Output Variation vs Temperature Normalized to Output at 25°C, P
IN
= -46 to +2dBm ±1 dB
Deviation from CW Response 12dB Peak to Average Ratio(WiMAX OFDM) 0.2dB
QUICK START PROCEDURE
Demonstration circuit
1528
A is easy to set up to evalu-
ate the performance of the LTC5582.
Care should be
taken during
V
CC
power up, to ensure the supply voltage
transient does not exceed the absolute maximum.
Refer to
Figure 2
for measurement equipment setup
and follow the procedure below:
1. Connect voltmeter’s negative (-) lead to demo
board GND test point (TP2).
2. Connect voltmeter’s positive (+) lead to the
demo board VOUT test point (TP6).
3. Connect DC power supply’s negative (-) output
to demo board GND test point (TP2).
4. Connect DC power supply’s positive (+) output
(3.15V to 3.5V) to demo board V
CC
test point
(TP1).
5. Connect signal generator’s output to demo
board RFIN port (SMA connector J1) via coaxial
cable. An optional 3dB attenuator may be in-
serted to improve input match, the power range
will be shifted higher by 3dB.
6. Using a jumper cable, connect demo board V
CC
test point (TP1) to EN1 test point (TP3). Now
the detector is enabled (on) and is ready for
measurement.
7.
Apply RF input signal at RFIN and measure the
output DC voltage.
APPLICATION NOTES:
Absolute maximum ratings
Supply voltage…………………………….…3.8V
Enable voltage……………..…-0.3V to
V
CC
+0.3V
Input signal Power(Single-ended, 50
Ω
)…..18dBm
Input signal Power(Differential, 50
Ω
)……..24dBm
Operating Temperature Range….…-40°C to 85°C
NOTE.
For digitally modulated signals, an oscilloscope can be
used to observe the AC components of the output.
Figure 1. Standard demo board RF input return loss
