參數(shù)資料
型號: PMB2349
廠商: INFINEON TECHNOLOGIES AG
元件分類: PLL合成/DDS/VCOs
英文描述: PLL FREQUENCY SYNTHESIZER, 2800 MHz, PQCC24
封裝: PLASTIC, VQFN-24
文件頁數(shù): 26/35頁
文件大?。?/td> 670K
代理商: PMB2349
Reference
5 - 12
PMB 2349
preliminary
Wireless Components
Confidential
Specification, May 2000
5.4 Input Sensitivity
The following sections show the typical performance at +25°C.
5.4.1
Typical RF Sensitivity
The PLL setup is: Psc:32/33. N:3, A:1, IF-PLL is in standby mode. VCC is 2.7 V.
Chip Mode is set to ’TEST MODE FVN’. This causes the N/A divider output to be fed to
the SINK part of the chargepump (source is switched off all time.) Therefore a resistor
which provides a current path from pin CPx to VCP (CP supply) is needed.
5.4.2
Typical IF Sensitivity:
The PLL setup is: Psc:16/17. N:3, A:1, RF-PLL is in standby mode. VCC is 2.7 V..
SENSITIVITY - 32/33 N:3 A:1 - 2V7 - Rext - RF POW ER [dBm ] vs RF FREQUENCY [MHz] vs IBip[%]
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
5
0
500
1000
1500
2000
2500
3000
100% + Rext - N ominal Mode
-40% + Rext - Powersave II
-20% + Rext - Powersave I
SENSITIVITY - 16/17 N:3 A:1 - 2V5 - Rext - IF POW ER [dBm ] vs IF FREQ UENCY [M Hz] vs IBip[% ]
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
5
0
100
200
300
400
500
600
700
800
Ibip: 100% - Rext - Nominal
Ibip: -40% - Rext - P owersave II
Ibip: -20% - Rext - P owersave I
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