參數(shù)資料
型號: LMX2353TMX/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: PLL合成/DDS/VCOs
英文描述: PHASE LOCKED LOOP, 2500 MHz, PDSO16
封裝: LEAD FREE, PLASTIC, TSSOP-16
文件頁數(shù): 9/16頁
文件大?。?/td> 209K
代理商: LMX2353TMX/NOPB
Connection Diagrams
Pin Description
Pin No.
Pin
Name
I/O
Description
CSP
TSSOP
16
1
V
P
Power supply for charge pump. Must be
≥ V
CC.
12
CP
O
Charge pump output. Connected to a loop filter for driving the control input of an
external VCO.
2
3
GND
Ground for PLL digital circuitry.
34
f
IN
I
RF prescaler input. Small signal input from the VCO.
45
f
INB
I
RF prescaler complimentary input. A bypass capacitor should be placed as close
as possible to this pin and be connected directly to the ground plane.
5
6
GND
Ground for PLL analog circuitry.
6
7
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.
78
F
oLD
O
Multiplexed output of N or R divider and lock detect. CMOS output.
8
9
CE
I
PLL Enable. Powers down N and R counters, prescalers, and TRI-STATE charge
pump output when LOW. Bringing CE high powers up PLL depending on the state
of CTL_WORD.
9
10
CLK
I
High impedance CMOS Clock input. Data for the various counters is clocked into
the 24-bit shift register on the rising edge.
10
11
DATA
I
Binary serial data input. Data entered MSB first. The last two bits are the control
bits. High impedance CMOS input.
11
12
LE
I
Load enable high impedance CMOS input. Data stored in the shift registers is
loaded into one of the 4 internal latches when LE goes HIGH.
12
13
GND
Ground.
13
14
V
CC
PLL power supply voltage 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.
14
15
OUT1
Programmable CMOS output. Level of the output is controlled by F2[18] bit.
15
16
OUT0
Programmable CMOS output. Level of the output is controlled by F2[17] bit.
DS101124-2
TOP VIEW
Order Number LMX2353TM or
LMX2353TMX
See NS Package Number MTC16
DS101124-3
TOP VIEW
Order Number LMX2353SLBX
See NS Package Number SLB16A
www.national.com
2
相關(guān)PDF資料
PDF描述
LMX2354SLBX/NOPB PLL FREQUENCY SYNTHESIZER, 2500 MHz, QCC24
LMX2354TM/NOPB PLL FREQUENCY SYNTHESIZER, 2500 MHz, PDSO24
LMX2354SLDX PLL FREQUENCY SYNTHESIZER, 2500 MHz, CQCC24
LMX2355SLBX PLL FREQUENCY SYNTHESIZER, 2500 MHz, QCC24
LMX2370SLDX PLL FREQUENCY SYNTHESIZER, 2500 MHz, QCC24
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參數(shù)描述
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