參數(shù)資料
型號(hào)： LMX2525LQ1321/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： PLL合成/DDS/VCOs
英文描述： PLL FREQUENCY SYNTHESIZER, 26 MHz, QCC24
封裝： 5 X 4 MM, 0.75 MM HEIGHT, LLP-24
文件頁(yè)數(shù)： 10/17頁(yè)
文件大小： 237K
代理商： LMX2525LQ1321/NOPB
Connection Diagram
24-Pin 5x4 LLP (LQ) Package
20068902
Note: Analog ground connected through exposed die attached pad.
Pin Descriptions
Pin Number
Name
I/O
Description
1
L1
—
RF2 VCO tank pin. An external inductor is required between pins
L1 and L2 to set the resonant frequency of RF2 VCO (PDC800).
2
L2
—
RF2 VCO tank pin. An external inductor is required between pins
L1 and L2 to set the resonant frequency of RF2 VCO (PDC800).
3
NC
—
Do not connect to any node on the printed circuit board.
4
NC
—
Do not connect to any node on the printed circuit board.
5V
DD
—
Supply voltage for RF analog circuitry
6
RF1out
O
RF output of RF1 VCO for PDC1500
7V
DD
—
Supply voltage for RF analog circuitry
8
RF2out
O
RF output of RF2 VCO for PDC800
9V
DD
—
Supply voltage for analog circuitry
10
V
CC
—
Supply voltage for digital circuitry
11
GND
—
Ground for digital circuitry
12
V
CC
—
Supply voltage for digital circuitry
13
LE
I
MICROWIRE Latch Enable
14
DATA
I
MICROWIRE Data
15
CLK
I
MICROWIRE Clock
16
CE
I
Chip enable control pin
17
BS
I
Band select control pin
18
LD
O
Lock detect pin
19
V
CC
—
Supply voltage for digital circuitry
20
OSCin
I
Reference frequency input
21
GND
—
Ground for digital circuitry
22
V
DD
—
Supply voltage for analog circuitry
23
GND
—
Ground for analog circuitry
24
V
DD
—
Supply voltage for RF analog circuitry
LMX2525
www.national.com
2
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