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參數(shù)資料
| 型號(hào)： | MAX2118EVKIT |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | MAX2116 Evaluation Kits |
| 中文描述： | MAX2116、MAX2118評(píng)估板 |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大?。?/td> | 402K |
| 代理商： | MAX2118EVKIT |
E
4) Put a delta marker on the desired tone and increase
the GC1 voltage.
5) The gain delta is greater than 60dB.
Digital Gain Control (GC2) Test:
1) Adjust the power supply connected to TP7 to 0.75V
(max RF gain).
2) Set the baseband gain control to 0 (max baseband
gain).
3) Set the RF signal generator
’
s frequency to 5MHz
higher than the desired LO frequency and its input
power to -65dBm. (The signal generator power
might need to be adjusted to produce a full-scale
baseband output level.)
4) Put a delta marker on the desired tone and increase
the baseband gain control to 31.
5) The gain delta is larger than 20dB.
Lowpass Filters Test:
1) Adjust the power supply connected to TP7 to 0.75V
and GC2 to decimal 0 (max baseband gain).
2) Set the RF generator to -65dBm and 10MHz higher
than the desired LO frequency.
3) Set the spectrum analyzer to measure from 0 to
50MHz and put a delta marker on the desired tone.
(Adjust GC1 level for a full-scale baseband output
level.)
4) While monitoring the 10MHz tone on the spectrum
analyzer, decrease FDAC.
5) Note the decrease in filter-noise-floor bandwidth.
When the computed 3dB BW equals 10MHz, the
desired tone is attenuated by more than 1dB.
Layout Issues
A good PC board is an essential part of an RF circuit
design. The EV kit PC board can serve as a guide for
laying out a board using the MAX2116/MAX2118. Keep
traces carrying RF signals as short as possible to mini-
mize radiation and insertion loss. Use impedance con-
trol on all RF signal traces. The VCC node on the PC
board should have decoupling capacitors to the clo-
sest ground. Refer to the
Layout
section of the
MAX2116/MAX2118 data sheet for more information.
MAX2116/MAX2118 Evaluation Kits
4
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