MAX2361 MAXIM [Maxim Integrated Products], MAX2361 Datasheet - Page 7

• Manufacturer Part Number: MAX2361
• Description: Evaluation Kits
• Manufacturer: MAXIM [Maxim Integrated Products]

Perform the following steps to evaluate the MAX2361 in
the PCS CDMA mode:
1) Remove shunt JU2 and place shunt in JU3. This
2) With the MAX236X control screen active, set the
3) Click on the Send Data buttons for each of the con-
4) Apply a 2.4V to VGC via JU4.
5) Connect the RFH0 port to the spectrum analyzer.
6) The output power should be about +9dBm after
Perform the following steps to evaluate the MAX2363 in
the wideband CDMA mode:
1) Remove shunt JU2 and place shunt in JU3. This
2) Connect a TCXO at 15.36MHz to REF port.
3) Set the modulation of the baseboard signal genera-
4) With the MAX236X control screen active, set the
5) Click on the Send Data buttons for each of the con-
6) Apply a 2.4V to VGC via JU4.
7) Connect the RFH0 port to the spectrum analyzer.
8) The output power should be about +9dBm after
removes V
to the PCS VCO.
registers according to Table 1.
trol registers located at the right of the screen.
There are eight registers that need to be down-
loaded to the IC. The lock indicator on the screen
should be red, indicating lock.
Configure the spectrum analyzer to measure ACPR
for reverse-channel CDMA. Set the center frequen-
cy to 1880.01MHz with a +10dBm reference level.
accounting for cable and connector loss. The ACPR
at ±1.25MHz offset should be -54dBc.
removes V
to the WCDMA VCO.
tor to 3GPP WCDMA reverse link.
registers according to Table 1.
trol registers located at the right of the screen.
There are eight registers that need to be down-
loaded to the IC. The Lock indicator on the screen
should be red, indicating lock.
Configure the spectrum analyzer to measure ACPR
for reverse-channel WCDMA. Set the center fre-
quency to 1950MHz with a +10dBm reference level.
accounting for cable and connector loss. The ACPR
at ±5MHz offset should be -44dBc.
CC
CC
for the cellular VCO and applies V
for the cellular VCO and applies V
_______________________________________________________________________________________
Upper Half-Band PCS CDMA Mode
MAX2361/MAX2363W Evaluation Kits
Wide-Band CDMA Mode
CC
CC
Apply a voltage from 0.6V to 2.4V to header “VGC” to
adjust the IF and RF VGA of the MAX2361/MAX2363/
MAX2365. The VGC voltage is filtered on the EV kit to
minimize undesired amplitude modulation.
The interface port is designed to use a 20-pin ribbon
cable (Figure 1); 10 pins are signal lines, and the other
10 pins are digital grounds. Pin 1 of the interface cable
is red. Pin 1 is also designated in silk screen on each of
the PC boards.
The following section covers the EV kits’ circuit blocks
in detail (refer to the MAX2361/MAX2363/MAX2365
data sheet for additional information).
The single-ended I/Q signals are converted to differen-
tial by operational amplifiers on the EV kit. The op amps
also provide DC bias to the I/Q input pins of the
MAX2361/MAX2363/MAX2365. The EV kits are set up to
provide 415mVp-p differential to the IC when used with
a 50Ω source that delivers 1Vp-p into 50Ω. For other
I/Q levels, replace R9 and R18 with appropriate resistor
values according to Table 2.
The programming interface is provided by the
INTF2300 interface board. The interface board buffers
and level shifts logic levels from the PC to the
MAX2361/MAX2363W EV kits (refer to the INTF2300
documentation). These logic signals control the logic
pins as well as the serial interface.
Table 1. Register Settings
RFM (dec)
RFR (dec)
IFM (dec)
IFR (dec)
OPCTRL (hex)
CONFIG (hex)
I
TEST (hex)
CC
CTRL (hex)
Adjustments and Control
CELLULAR
CDMA
38214
C03F
0C38
6519
090F
656
492
100
Detailed Description
Programming Interface
UPPER-HALF
PCS CDMA
Interface Control
BAND
58321
C03F
2C38
6519
992F
656
492
100
VGA Adjust
I/Q Inputs
WCDMA
29125
D03F
2C38
4750
9F0F
192
100
96
7