參數(shù)資料
型號(hào)： LMX2532LQ0967
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： XO, clock
英文描述： PLLatinum Frequency Synthesizer System with Integrated VCOs
中文描述： PLL FREQUENCY SYNTHESIZER, 19.68 MHz, QCC28
封裝： 5 X 5 MM, 0.75 MM HEIGHT, LLP-28
文件頁(yè)數(shù)： 1/18頁(yè)
文件大小： 189K
代理商： LMX2532LQ0967
LMX2522/LMX2532
PLLatinum
Frequency Synthesizer System with
Integrated VCOs
General Description
LMX2522 and LMX2532 are highly integrated, high perfor-
mance, low power frequency synthesizer systems optimized
for Korean PCS (K-PCS) with GPS and Korean Cellular
(K-Cellular) with GPS, CDMA (1xRTT, IS-95) mobile hand-
sets. Using a proprietary digital phase locked loop tech-
nique, LMX2522 and LMX2532 generate very stable, low
noise local oscillator signals for up and down conversion in
wireless communications devices.
LMX2522 and LMX2532 include a RF voltage controlled
oscillator (VCO), a GPS VCO, a loop filter, and a fractional-N
RF PLL based on a delta sigma modulator. In concert these
blocks form a closed loop RF and GPS synthesizer system.
LMX2522 supports the Korean PCS band with GPS and
LMX2532 supports the Korean Cellular band with GPS.
LMX2522 and LMX2532 include an Integer-N IF PLL also.
For more flexible loop filter designs, the IF PLL includes a
4-level programmable charge pump. Together with an exter-
nal VCO and loop filter, LMX2522 and LMX2532 make a
complete closed loop IF synthesizer system.
Serial data is transferred to the device via a three-wire
MICROWIRE interface (DATA, LE, CLK).
Operating supply voltage ranges from 2.7 V to 3.3 V.
LMX2502 and LMX2512 feature low current consumption:
17 mA at 2.8 V.
LMX2522 and LMX2532 are available in a 28-pin leadless
leadframe package (LLP).
Features
n
Small Size
Small 5.0 mm x 5.0 mm x 0.75 mm 28-Pin LLP Package
n
RF/GPS Synthesizer System
Integrated RF VCO
Integrated GPS VCO
Integrated Loop Filter
Low Spurious, Low Phase Noise Fractional-N RF PLL
Based on 11-bit Delta Sigma Modulator
10 kHz Frequency Resolution
n
IF Synthesizer System
Integer-N IF PLL
Programmable Charge Pump Current Levels
Programmable Frequencies
n
Supports Various Reference Oscillator Frequencies
19.20/19.68 MHz
n
Fast Lock Time: 500 μs
n
Low Current Consumption
17 mA at 2.8 V
n
2.7 V to 3.3 V Operation
n
Digital Filtered Lock Detect Output
n
Hardware and Software Power Down Control
Applications
n
Korean PCS CDMA Systems with GPS
n
Korean Cellular CDMA Systems with GPS
Functional Block Diagram
20067201
PLLatinum is a trademark of National Semiconductor Corporation.
June 2003
L
2003 National Semiconductor Corporation
DS200672
www.national.com
相關(guān)PDF資料
PDF描述
LMX2532 PLLatinum Frequency Synthesizer System with Integrated VCOs
LMX2542LQ2121 PLLatinum Cellular and GPS Frequency Synthesizer System with Integrated VCO
LMX2542LQX2121 PLLatinum Cellular and GPS Frequency Synthesizer System with Integrated VCO
LMX2542 PLLatinum Cellular and GPS Frequency Synthesizer System with Integrated VCO
LMX2604 Triple-band VCO for GSM900/DCS1800/PCS1900
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LMX2532LQ0967/NOPB 功能描述:IC FREQ SYNTH DUAL W/VCO 28LLP RoHS:是 類別:RF/IF 和 RFID >> RF 其它 IC 和模塊 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:100 系列:*
LMX2532LQ1065 制造商:Rochester Electronics LLC 功能描述:PLL+VCO CDMA+GPS - Bulk 制造商:Texas Instruments 功能描述:IC PLL VCO SMD 2532 LLP-28
LMX2532LQ1065/NOPB 功能描述:IC FREQ SYNTH DUAL W/VCO 28LLP RoHS:是 類別:RF/IF 和 RFID >> RF 其它 IC 和模塊 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:100 系列:*
LMX2532LQX0967 功能描述:IC SYNTHESIZER PLL VCO GPS 28LLP RoHS:是 類別:RF/IF 和 RFID >> RF 其它 IC 和模塊 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:100 系列:*
LMX2532LQX1065 功能描述:IC SYNTHESIZER PLL VCO GPS 28LLP RoHS:是 類別:RF/IF 和 RFID >> RF 其它 IC 和模塊 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:100 系列:*
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