參數(shù)資料
型號(hào): LMX2502LQ1635
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: XO, clock
英文描述: PLLatinum⑩ Frequency Synthesizer System with Integrated VCO
中文描述: PLL FREQUENCY SYNTHESIZER, 19.68 MHz, QCC28
封裝: 5 X 5 MM, 0.75 MM HEIGHT, LLP-28
文件頁(yè)數(shù): 2/18頁(yè)
文件大小: 184K
代理商: LMX2502LQ1635
Connection Diagram
28-Pin LLP (LQ) Package
20068002
NOTE: Analog ground connected through exposed die attached pad.
Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Name
CPout
NC
NC
V
DD
LE
CLK
DATA
V
DD
NC
NC
NC
NC
V
DD
V
DD
RFout
V
CC
V
CC
V
CC
LD
CE
GND
OSCin
V
CC
GND
V
CC
Fin
V
CC
NC
I/O
O
I
I
I
O
O
I
I
I
Description
IF PLL charge pump output
Do not connect to any node on the printed circuit board.
Do not connect to any node on the printed circuit board.
Supply voltage for IF analog circuitry
MICROWIRE Latch Enable
MICROWIRE Clock
MICROWIRE Data
Supply voltage for VCO
Do not connect to any node on the printed circuit board.
Do not connect to any node on the printed circuit board.
Do not connect to any node on the printed circuit board.
Do not connect to any node on the printed circuit board.
Supply voltage for VCO
Supply voltage for VCO output buffer
Buffered VCO output
Supply voltage for RF prescaler
Supply voltage for charge pump
Supply voltage for RF digital circuitry
Lock Detect
Chip Enable control pin
Ground for digital circuitry
Reference frequency input
Supply voltage for reference input buffer
Ground for digital circuitry
Supply voltage for IF digital circuitry
IF buffer/prescaler input
Supply voltage for IF buffer/prescaler
Do not connect to any node on the printed circuit board.
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