LMX2324 National Semiconductor Corporation, LMX2324 Datasheet - Page 2

• Manufacturer Part Number: LMX2324
• Description: Pllatinum? 2.0 Ghz Frequency Synthesizer For Rf Personal Communications
• Manufacturer: National Semiconductor Corporation

www.national.com
TSSOP16
Connection Diagrams
Pin Descriptions
10
12
13
14
15
11
16
2
3
4
5
6
7
8
9
1
Pin No.
Order Number LMX2324TM, LM2324TMX
See NS Package Number MTC16
CSP16
TSSOP 16-Pin Package
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
OSC
Name
Clock
GND
Data
CP
V
Pin
f
NC
NC
NC
NC
NC
CE
LE
V
INB
f
IN
CC
P
o
in
10103002
I/O
—
—
O
I
I
I
I
I
I
I
I
Power supply for charge pump. Must be ≥ V
Internal charge pump output. For connection to a loop filter for driving the
voltage control input of an external oscillator.
Ground.
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.
RF prescaler input. Small signal input from the voltage controlled oscillator.
No Connect
No Connect
Oscillator input. A CMOS inverting gate input. The input has a V
threshold and can be driven from an external CMOS or TTL logic gate.
No Connect
High impedance CMOS Clock input. Data is clocked in on the rising edge,
for the various counters and registers.
Binary serial data input. Data entered MSB first. LSB is control bit. High
impedance CMOS input.
Load Enable input. When Load Enable transitions HIGH, data is loaded into
either the N or R register (control bit dependent). See timing diagram.
No Connect
No Connect
CHIP Enable. A LOW on CE powers down the device asynchronously and
will TRI-STATE
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.
2
®
the charge pump output.
See NS Package Number SLB16A
Order Number LMX2324SLBX
Description
CSP 16-Pin Package
Top View
CC
10103003
CC
/2 input