參數(shù)資料
型號: U2730B-BFSG1
英文描述: L-Band Down-Converter for DAB Receivers
中文描述: L波段下為DAB接收器
文件頁數(shù): 9/12頁
文件大?。?/td> 271K
代理商: U2730B-BFSG1
U2730B-B
Preliminary Information
Rev. A1, 22-Jul-98
9 (12)
Application Circuit for External LO Signal
With an external LO signal it is possible to overdrive the VCO. In this case, the internal VCO acts as an LO buffer.
15003
TANK
REF
100p
470nH
50
ext. LO signal
(50
signal gen.)
P
LO
= –10dBm
1n
Figure 6. Application circuit for external LO signal
Phase-Noise Performance
Operating conditions
V
CC
= 8.5 V, T
amb
= 25
°
C, application circuit see figure 3, I
PD
= 200
μ
A, f
REF
= 17.92 MHz / –10 dBm
10.00 dB / DIV
CENTER 1261.568 MHz
RB 100 Hz VB 100 Hz
SPAN 50.00 kHz
< –75 dBc/Hz
Figure 7. Phase noise
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