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參數(shù)資料
| 型號： | MAX2363W |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Evaluation Kits |
| 中文描述： | 評估板 |
| 文件頁數(shù)： | 7/13頁 |
| 文件大小： | 919K |
| 代理商： | MAX2363W |
E
MAX2361/MAX2363W Evaluation Kits
_______________________________________________________________________________________
7
Upper Half-Band PCS CDMA Mode
Perform the following steps to evaluate the MAX2361 in
the PCS CDMA mode:
1) Remove shunt JU2 and place shunt in JU3. This
removes V
CC
for the cellular VCO and applies V
CC
to the PCS VCO.
2) With the MAX236X control screen active, set the
registers according to Table 1.
3) Click on the Send Data buttons for each of the con-
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.
4) Apply a 2.4V to VGC via JU4.
5) Connect the RFH0 port to the spectrum analyzer.
Configure the spectrum analyzer to measure ACPR
for reverse-channel CDMA. Set the center frequen-
cy to 1880.01MHz with a +10dBm reference level.
6) The output power should be about +9dBm after
accounting for cable and connector loss. The ACPR
at ±1.25MHz offset should be -54dBc.
Wide-Band CDMA Mode
Perform the following steps to evaluate the MAX2363 in
the wideband CDMA mode:
1) Remove shunt JU2 and place shunt in JU3. This
removes V
CC
for the cellular VCO and applies V
CC
to the WCDMA VCO.
2) Connect a TCXO at 15.36MHz to REF port.
3) Set the modulation of the baseboard signal genera-
tor to 3GPP WCDMA reverse link.
4) With the MAX236X control screen active, set the
registers according to Table 1.
5) Click on the Send Data buttons for each of the con-
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.
6) Apply a 2.4V to VGC via JU4.
7) Connect the RFH0 port to the spectrum analyzer.
Configure the spectrum analyzer to measure ACPR
for reverse-channel WCDMA. Set the center fre-
quency to 1950MHz with a +10dBm reference level.
8) The output power should be about +9dBm after
accounting for cable and connector loss. The ACPR
at ±5MHz offset should be -44dBc.
Adjustments and Control
VGA Adjust
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.
Interface Control
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.
Detailed Description
The following section covers the EV kits
’
circuit blocks
in detail (refer to the MAX2361/MAX2363/MAX2365
data sheet for additional information).
I/Q Inputs
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 50
source that delivers 1Vp-p into 50
. For other
I/Q levels, replace R9 and R18 with appropriate resistor
values according to Table 2.
Programming Interface
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.
CELLULAR
CDMA
UPPER-HALF
BAND
PCS CDMA
58321
656
6519
492
992F
C03F
2C38
100
WCDMA
RFM (dec)
RFR (dec)
IFM (dec)
IFR (dec)
OPCTRL (hex)
CONFIG (hex)
I
CC
CTRL (hex)
TEST (hex)
38214
656
6519
492
090F
C03F
0C38
100
29125
192
4750
96
9F0F
D03F
2C38
100
Table 1. Register Settings
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