LMX2324SLBX National Semiconductor, LMX2324SLBX Datasheet

IC FREQ SYNTH 2.0GHZ 16LAMINATE

LMX2324SLBX

Manufacturer Part Number
LMX2324SLBX
Description
IC FREQ SYNTH 2.0GHZ 16LAMINATE
Manufacturer
National Semiconductor
Series
PLLatinum™r
Type
PLL Frequency Synthesizerr
Datasheet

Specifications of LMX2324SLBX

Pll
Yes
Input
CMOS, TTL
Output
Clock
Number Of Circuits
1
Ratio - Input:output
1:1
Differential - Input:output
No/No
Frequency - Max
2GHz
Divider/multiplier
Yes/No
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-Laminate CSP
Frequency-max
2GHz
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
LMX2324SLBX
LMX2324SLBXTR

Available stocks

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Part Number
Manufacturer
Quantity
Price
Part Number:
LMX2324SLBX
Manufacturer:
TI
Quantity:
1 456
© 2010 National Semiconductor Corporation
PLLatinum ™ 2.0 GHz Frequency Synthesizer for RF
Personal Communications
General Description
The LMX2324 is a high performance frequency synthesizer
with integrated 32/33 dual modulus prescaler designed for RF
operation up to 2.0 GHz. Using a proprietary digital phase
locked loop technique, the LMX2324's linear phase detector
characteristics can generate very stable, low noise control
signals for UHF and VHF voltage controlled oscillators.
Serial data is transferred into the LMX2324 via a three-line
MICROWIRE ™ interface (Data, LE, Clock). Supply voltage
range is from 2.7V to 5.5V. The LMX2324 features very low
current consumption, typically 3.5 mA at 3V. The charge
pump provides 4 mA output current.
The LMX2324 is manufactured using National's ABiC V
BiCMOS process and is packaged in a 16-pin TSSOP and a
16-pin Chip Scale Package (CSP).
Functional Block Diagram
PLLatinum ™ is a trademark of National Semiconductor Corporation.
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
101030 Version 8 Revision 1
101030
LMX2324
Print Date/Time: 2010/03/17 20:00:58
Features
Applications
RF operation up to 2.0 GHz
2.7V to 5.5V operation
Low current consumption: I
Dual modulus prescaler: 32/33
Internal balanced, low leakage charge pump
Cellular telephone systems (GSM, NADC, CDMA, PDC)
Personal wireless communications (DCS-1800, DECT,
CT-1+)
Wireless local area networks (WLANs)
Other wireless communication systems
CC
= 3.5 mA (typ) at V
10103001
OBSOLETE
March 17, 2010
www.national.com
CC
= 3.0V

Related parts for LMX2324SLBX

LMX2324SLBX Summary of contents

Page 1

... The LMX2324 is manufactured using National's ABiC V BiCMOS process and is packaged in a 16-pin TSSOP and a 16-pin Chip Scale Package (CSP). Functional Block Diagram PLLatinum ™ trademark of National Semiconductor Corporation. TRI-STATE ® registered trademark of National Semiconductor Corporation. © 2010 National Semiconductor Corporation ...

Page 2

... 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 101030 Version 8 Revision 1 Print Date/Time: 2010/03/17 20:00:58 CSP 16-Pin Package 10103003 Top View Order Number LMX2324SLBX See NS Package Number SLB16A Description ≥ input threshold CC ...

Page 3

... Absolute Maximum Ratings 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage ( Power Supply for Charge Pump (V P Voltage on Any Pin with GND = Storage Temperature Range ( Lead Temperature (solder, 4 sec.) (T Electrical Characteristics All min/max specifications are guaranteed by design, or test, or statistical methods ...

Page 4

Note 3: Except f and OSC IN in Note 4: See related equations in charge pump current specification definitions Charge Pump Current Specification Definitions − Δ sink current at VCP = ...

Page 5

... Functional Description The basic phase-lock-loop (PLL) configuration consists of a high-stability crystal reference oscillator, a frequency synthe- sizer such as the National Semiconductor LMX2324, a volt- age controlled oscillator (VCO), and a passive loop filter. The frequency synthesizer includes a phase detector, current mode charge pump, as well as programmable reference [R] and feedback [N] frequency dividers ...

Page 6

Programming Description 2.1 MICROWIRE INTERFACE The LMX2324 register set can be accessed through the MICROWIRE interface. A 18-bit shift register is used as a temporary register to indirectly program the on-chip registers. The shift register consists of a 17-bit ...

Page 7

R REGISTER If the Address Bit (ADDR when LE is transitioned high data is transferred from the 18-bit shift register into the 14-bit R register. The R register contains a latch which sets the PLL 10-bit R ...

Page 8

N REGISTER If the address bit is LOW (ADDR=0) when LE is transitioned high, data is transferred from the 18-bit shift register into the 17-bit N register. The N register consists of the 5-bit swallow counter (A counter), the ...

Page 9

CTL_WORD MSB CNT_RST 101030 Version 8 Revision Print Date/Time: 2010/03/17 20:00:58 LSB N0 PWDN www.national.com ...

Page 10

Control Word Truth Table Notes: X denotes don't care. The Counter Reset enable bit when activated allows the reset of both N and R counters. Upon powering up the N counter resumes counting ...

Page 11

Phase Comparator and Internal Charge Pump Characteristics π Notes: Phase difference detection range: − The minimum width pump up and pump down current pulses occur at the Phase comparator input from the R Divider R ...

Page 12

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 16-Pin Thin Shrink Small Outline Package Order Number LMX2324TM, LMX2324TMX NS Package Number MTC16 12 101030 Version 8 Revision 1 Print Date/Time: 2010/03/17 20:00:58 ...

Page 13

... Chip Scale Package Order Number LMX2324SLBX NS Package Number SLB16A 13 101030 Version 8 Revision 1 Print Date/Time: 2010/03/17 20:00:58 www.national.com ...

Page 14

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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