參數(shù)資料
型號: PMB2347
廠商: INFINEON TECHNOLOGIES AG
英文描述: RF/IF Double PLL Frequency Synthesizer
中文描述: 射頻/中頻雙鎖相環(huán)頻率合成器
文件頁數(shù): 34/35頁
文件大?。?/td> 578K
代理商: PMB2347
Maximum Sink Current @ V
PD
-
V
SRC
Maximum Source Current @ GND+
V
SNK
Typical Sink Current @ V
PD
/2
Typical Source Current @ V
PD
/2
Minimum Sink Current @ GND+
V
SNK
Minimum Source Current @ V
PD
-
V
SRC
Reference
5 - 15
PMB 2347
preliminary
Wireless Components
Specification, August 1999
5.5
Charge Pump Currents
Figure 5-1
Definition of Charge Pump Currents
Terms and Abbreviations:
V
PD
V
src/snk
Isnk
max
Isrc
max
Isnk
typ
Isrc
typ
Isnk
min
Isrc
min
Supply Voltage of Charge Pump
Offset Voltage from GND or V
PD
Specification of Charge Pump Characteristics:
Charge Pump Output Magnitude Variation CPMV:
Charge Pump Current Mismatch CPCM:
Spurious Suppression:
Presuming a standard GSM-application - RF: 900MHz, PD frequency: 200kHz,
Vcc: 2.7V, T
A
.: -40...+85’C -
for spurious suppression better than 70dB, it is
recommendet that
V
PD
should be within
V
SNK
and V
cc
V
SNK
V
snk
V
CP
V
PD
/2
Isnk
max
Isnk
typ
Isnk
min
Isrc
min
Isrc
typ
Isrc
max
V
src
Isnkmax
Isnkmax
Isnkmin
+
-----------------------2
Isrcmax
Isrcmax
Isrcmin
+
-----------------------2
Isnktyp
Isrctyp
+
--------------------2
Isrctyp
2
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