參數(shù)資料
型號: LMX2352SLBX
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: PLL合成/DDS/VCOs
英文描述: PLL FREQUENCY SYNTHESIZER, 1200 MHz, PQCC24
封裝: LAMINATE, CSP-24
文件頁數(shù): 20/26頁
文件大?。?/td> 465K
代理商: LMX2352SLBX
Connection Diagram (Continued)
Pin
No.
Pin
Name
I/O
Description
17
GND
-
Ground for IF analog circuitry.
18
fin IF
I
IF prescaler complimentary input. A bypass capacitor should be placed as close as possible
to this pin and be connected directly to the ground plane.
19
fin IF
I
IF prescaler input. Small signal input from the VCO.
20
GND
-
Ground for IF digital circuitry.
21
CPo
IF
O
IF charge pump output. For connection to a loop filter for driving the input of an external VCO.
22
Vp
IF
-
Power supply for IF charge pump. Must be
≥ V
ccRF and VccIF.
23
Vcc
IF
-
IF power supply voltage input. Must be equal to Vcc
RF . Input may range from 2.7 V to 5.5 V.
Bypass capacitors should be placed as close as possible to this pin and be connected directly
to the ground plane.
24
OUT1
O
Programmable CMOS output. Level of the output is controlled by IF_N [18] bit.
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