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LMX2522 Datasheet(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LMX2522
Description  PLLatinum Frequency Synthesizer System with Integrated VCOs
PDF  18 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LMX2522 Datasheet(HTML) 2 Page - National Semiconductor (TI)

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Connection Diagram
28-Pin LLP (LQ) Package
20067202
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 printed circuit board.
3
NC
—
Do not connect to any node on 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 VCOs
9
NC
—
Do not connect to any node on printed circuit board.
10
NC
—
Do not connect to any node on printed circuit board.
11
NC
—
Do not connect to any node on printed circuit board.
12
NC
—
Do not connect to any node on printed circuit board.
13
V
DD
—
Supply voltage for VCOs
14
V
DD
—
Supply voltage for VCOs 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 printed circuit board.
www.national.com
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