MAX2203 Maxim, MAX2203 Datasheet - Page 5

• Manufacturer Part Number: MAX2203
• Description: The MAX2203 RMS power detector is designed to operate from 800MHz to 2
• Manufacturer: Maxim

The MAX2203 RMS power detector is designed to
operate from 800MHz to 2.0GHz. The device is ideal for
WCDMA, cdma2000, and high-speed downlink/uplink
packet access. The MAX2203 accepts an RF signal at
the input and outputs the same voltage regardless of
Table 1. Peak-to-Average Ratio (PAR*) of Test Signals
* PAR of CW is 3dB.
DPCCH + 1DPDCH
DPCCH + 5DPDCH
IS95 Reverse
IS95 Forward Pilot
9-Channel Forward
cdma2000 Pilot + DCCH
BUMP
A2, B1
A1
B2
C1
C2
MODULATION
RFIN/ENA
NAME
GND
OUT
FILT
V
CC
_______________________________________________________________________________________
Detailed Description
RF Input and Enable Logic Input. See the Typical Operating Circuit. Drive ENA high to turn on the
device. Drive ENA low to place it in shutdown mode.
Ground. Connect to PCB ground plane.
Intermediate Filtering Node. Bypass FILT with a capacitor as close as possible to the device.
Power Supply. Connect to either a regulated supply or battery. Bypass V
as possible to the device.
Detector Output. Connect an external lowpass RC filter for filtering.
PAR AT DIFFERENT PROBABILITY OF COMPLEMENTARY CUMULATIVE
10%
4.8
6.5
5.5
5.6
6.8
7
the peak-average of the input signal. The output volt-
age and input power is linear in dB. The device has a
-24dBm to +3dBm detection range, and every dB
change in input power gives 35mV (typ) change in out-
put voltage. Table 1 shows the peak to average of the
signals used to test the MAX2203.
10.3
1%
5.8
8.4
6.9
7.6
8.3
FUNCTION
RMS Power Detector
DISTRIBUTION (dB)
0.1%
6.2
9.2
7.6
8.8
9.2
12
CC
with a capacitor as close
Pin Description
0.01%
12.7
6.5
9.8
8.1
9.5
9.7
5