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LMX2324 Datasheet(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LMX2324
Description  PLLatinum™ 2.0 GHz Frequency Synthesizer for RF Personal Communications
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LMX2324 Datasheet(HTML) 2 Page - National Semiconductor (TI)

 
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Connection Diagrams
Pin Descriptions
Pin No.
Pin
Name
I/O
Description
TSSOP16
CSP16
21
V
P
Power supply for charge pump. Must be
≥ V
CC
32
CP
o
O
Internal charge pump output. For connection to a loop filter for driving the
voltage control input of an external oscillator.
4
3
GND
Ground.
54
f
INB
I
RF prescaler complimentary input. In single-ended mode, a bypass
capacitor should be placed as close as possible to this pin and be
connected directly to the ground plane. The LMX2324 can be driven
differentially when the bypass capacitor is omitted.
65
f
IN
I
RF prescaler input. Small signal input from the voltage controlled oscillator.
7
6
NC
No Connect
8
7
NC
No Connect
9
8
OSC
in
I
Oscillator input. A CMOS inverting gate input. The input has a V
CC/2 input
threshold and can be driven from an external CMOS or TTL logic gate.
10
9
NC
No Connect
12
10
Clock
I
High impedance CMOS Clock input. Data is clocked in on the rising edge,
into the various counters and registers.
13
11
Data
I
Binary serial data input. Data entered MSB first. LSB is control bit. High
impedance CMOS input.
14
12
LE
I
Load Enable input. When Load Enable transitions HIGH, data is loaded
into either the N or R register (control bit dependent). See timing diagram.
15
13
NC
No Connect
11
14
NC
No Connect
16
15
CE
I
CHIP Enable. A LOW on CE powers down the device asynchronously and
will TRI-STATE® the charge pump output.
116
V
CC
I
Power supply voltage input. Input may range from 2.7V to 5.5V. Bypass
capacitors should be placed as close as possible to this pin and be
connected directly to the ground plane.
TSSOP 16-Pin Package
DS101030-2
Order Number LMX2324TM, LM2324TMX
See NS Package Number MTC16
CSP 16-Pin Package
DS101030-3
Top View
Order Number LMX2324SLBX
See NS Package Number SLB16A
www.national.com
2


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