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LMX2352TM/NOPB 1.2GHZ/550MHZ FRAC N DUAL, LMX2353, LMX2353TMD

LMX2352TM/NOPB 1.2GHZ/550MHZ FRAC N DUAL, LMX2353, LMX2353TMD Selling Leads, Datasheet

MFG:NSC  Package Cooled:06+  D/C:N/A

LMX2352TM/NOPB 1.2GHZ/550MHZ FRAC N DUAL, LMX2353, LMX2353TMD Picture

LMX2352TM/NOPB 1.2GHZ/550MHZ FRAC N DUAL, LMX2353, LMX2353TMD Datasheet download

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Part Number: LMX2352TM/NOPB 1.2GHZ/550MHZ FRAC N DUAL

 

MFG: NSC

Package Cooled: 06+

D/C: N/A

 

 

 
 
 
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About LMX1501

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Datasheet: LMX1501

File Size: 376652 KB

Manufacturer: NSC [National Semiconductor]

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LMX2353 Suppliers

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About LMX2353

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Datasheet: LMX2353

File Size: 215106 KB

Manufacturer: NSC [National Semiconductor]

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About LMX1501

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Datasheet: LMX1501

File Size: 376652 KB

Manufacturer: NSC [National Semiconductor]

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LMX2353 General Description

The LMX2353 is a monolithic integrated fractional N frequency synthesizer, designed to be used in a local oscillator subsystem for a radio transceiver. It is fabricated using National's 0.5µ ABiC V silicon BiCMOS process. The LMX2353 contains dual modulus prescalers along with modulo 15 or 16 fractional compensation circuitry in the N divider. A 16/17 or 32/33 prescale ratio can be selected for the LMX2353. Using a fractional N phase locked loop technique, the LMX2353 can generate very stable low noise control signals for UHF and VHF voltage controlled oscillators (VCO's).

The LMX2353 has a highly flexible 16 level programmable charge pump supplies output current magnitudes from 100 µA to 1.6 mA. Serial data is transferred into the LMX2353 via a three wire interface (Data, LE, Clock). Supply voltage can range from 2.7V to 5.5V. The LMX2353 features very low current consumption; typically 4.5 mA at 3.0V. The LMX2353 is available in a 16-pin TSSOP or a 16-pad CSP surface mount plastic package.

LMX2353 Maximum Ratings

Power Supply Voltage
VCC .......................................................−0.3V to 6.5V
Vp .........................................................−0.3V to 6.5V
Voltage on any pin with
GND = 0V (VI) .............................−0.3V to VCC +0.3V
Storage Temperature Range (TS) −65°C to +150°C
Lead Temperature (solder, 4 sec.) (TL) ........+260°C
ESD - Human Body Model (Note 2)...................... 2 kV

LMX2353 Features

2.7V 5.5V operation
Low Current Consumption ICC = 4.5 mA typ @ VCC = 3.0V
Programmable or Logical Power Down Mode ICC = 5 µA typ @ VCC = 3.0V
Modulo 15 or 16 fractional N divider Supports ratios of 1, 2, 3, 4, 5, 8, 15, or 16
Programmable charge pump current levels 100 µA to 1.6 mA in 100 µA steps
 Digital Filtered Lock Detect

LMX2353 Typical Application

Portable wireless communications (PCS/PCN, cordless)
Zero blind slot TDMA systems
Cellular and Cordless telephone systems
 Spread spectrum communication systems (CDMA)

LMX2353 Connection Diagram

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