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LMX2502 bảng dữ liệu(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LMX2502
Giải thích chi tiết về linh kiện  PLLatinum??Frequency Synthesizer System with Integrated VCO
PDF  18 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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LMX2502 bảng dữ liệu(HTML) 2 Page - National Semiconductor (TI)

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Connection Diagram
28-Pin LLP (LQ) Package
20068002
NOTE: Analog ground connected through exposed die attached pad.
Pin Descriptions
Pin Number
Name
I/O
Description
1
CPout
O
IF PLL charge pump output
2
NC
–
Do not connect to any node on the printed circuit board.
3
NC
–
Do not connect to any node on the printed circuit board.
4V
DD
–
Supply voltage for IF analog circuitry
5
LE
I
MICROWIRE Latch Enable
6
CLK
I
MICROWIRE Clock
7
DATA
I
MICROWIRE Data
8V
DD
–
Supply voltage for VCO
9
NC
–
Do not connect to any node on the printed circuit board.
10
NC
–
Do not connect to any node on the printed circuit board.
11
NC
–
Do not connect to any node on the printed circuit board.
12
NC
–
Do not connect to any node on the printed circuit board.
13
V
DD
–
Supply voltage for VCO
14
V
DD
–
Supply voltage for VCO output buffer
15
RFout
O
Buffered VCO output
16
V
CC
–
Supply voltage for RF prescaler
17
V
CC
–
Supply voltage for charge pump
18
V
CC
–
Supply voltage for RF digital circuitry
19
LD
O
Lock Detect
20
CE
I
Chip Enable control pin
21
GND
–
Ground for digital circuitry
22
OSCin
I
Reference frequency input
23
V
CC
–
Supply voltage for reference input buffer
24
GND
–
Ground for digital circuitry
25
V
CC
–
Supply voltage for IF digital circuitry
26
Fin
I
IF buffer/prescaler input
27
V
CC
–
Supply voltage for IF buffer/prescaler
28
NC
–
Do not connect to any node on the printed circuit board.
www.national.com
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