參數(shù)資料
型號: SA1630
廠商: NXP Semiconductors N.V.
英文描述: IF Quadrature Transceiver(IF正交收發(fā)器)
中文描述: 中頻正交收發(fā)器(中頻正交收發(fā)器)
文件頁數(shù): 6/36頁
文件大小: 477K
代理商: SA1630
Philips Semiconductors
Application note
AN2003
SA1630 IF transceiver demonstration board
1999 Jan 05
6
Rx path voltage gain measurement
Figure 3 shows the necessary connections needed to evaluate the
receive path. A signal generator is used to supply the 22 MHz,
–10 dBm CLK reference frequency. Check to make sure the lock
detection LED is glowing brightly. The RF input is set to 353 MHz,
which is 1 MHz offset from the LO frequency. Thus, generating a
1 MHz tone at the output. The input level required to obtain a 1V
p-p
signal at the output is used to calculate the Rx gain, as outlined
below in the Question and Answer section. The datasheet
specifications are met if a 1V
p-p
output is obtained with an input
power of approximately –77 dBm or less. The output should be
measured with high impedance probes attached at the test point
posts provided.
TECKTRONIX 754C
4-CHANNEL SCOPE
TP1 / TP2
KEITHLEY
DC CURRENT METER
KEITHLEY
DC VOLT METER
PLL JUMPER
POWER SUPPLY
+3V
32.3/41.5 mA DC
3.000000000 VDC
POWER
SWITCHES
1: ON
4: ON
2, 3, 5–10: OFF = 3V
353.0000 MHz
–77.00 dBm
SIGNAL GENERATOR
353 MHz @ –77 dBm
22.0000 MHz
–10.00 dBm
SIGNAL GENERATOR
22 MHz @ –10 dBm
SR01872
Figure 3. Set-up for Rx path voltage gain and symmetrical compression measurements
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