LMX2531LQ1570E Datasheet, PDF (1/41 Pages) Texas Instruments – LMX2531 High Performance Frequency Synthesizer System with Integrated VCO

LMX2531
www.ti.com
SNAS252R – OCTOBER 2005 – REVISED FEBRUARY 2013
LMX2531 High Performance Frequency Synthesizer System with Integrated VCO
Check for Samples: LMX2531
FEATURES
1
•2 Multiple Frequency Options Available
– See Selection Guide Table
– Frequencies from: 553 MHz - 3132 MHz
• PLL Features
– Fractional-N Delta Sigma Modulator Order
Programmable up to 4th Order
– FastLock/Cycle Slip Reduction with
Timeout Counter
– Partially Integrated, Adjustable Loop Filter
– Very Low Phase Noise and Spurs
• VCO Features
– Integrated Tank Inductor
– Low Phase Noise
• Other Features
– 2.8 V to 3.2 V Operation
– Low Power-Down Current
– 1.8 V MICROWIRE Support
– Package: 36 WQFN
TARGET APPLICATIONS
• 3G Cellular Base Stations (WCDMA, TD-
SCDMA,CDMA2000)
• 2G Cellular Base Stations (GSM/GPRS, EDGE,
CDMA1xRTT)
• Wireless LAN
• Broadband Wireless Access
• Satellite Communications
• Wireless Radio
• Automotive
• CATV Equipment
• Instrumentation and Test Equipment
• RFID Readers
• Data Converter Clocking
DESCRIPTION
The LMX2531 is a low power, high performance
frequency synthesizer system which includes a fully
integrated delta-sigma PLL and VCO with fully
integrated tank circuit. The third and fourth poles are
also integrated and also adjustable. Also included are
integrated ultra-low noise and high precision LDOs for
the PLL and VCO which give higher supply noise
immunity and also more consistent performance.
When combined with a high quality reference
oscillator, the LMX2531 generates very stable, low
noise local oscillator signals for up and down
conversion in wireless communication devices. The
LMX2531 is a monolithic integrated circuit, fabricated
in an advanced BiCMOS process. There are several
different versions of this product in order to
accommodate different frequency bands.
Device programming is facilitated using a three-wire
MICROWIRE Interface that can operate down to 1.8
volts.
Supply voltage range is 2.8 to 3.2 Volts. The
LMX2531 is available in a 36 pin 6x6x0.8 mm WQFN
Package.
Table 1. Selection Guide
Part
LMX2531LQ1146E
LMX2531LQ1226E
LMX2531LQ1312E
LMX2531LQ1415E
LMX2531LQ1500E
LMX2531LQ1515E
LMX2531LQ1570E
LMX2531LQ1650E
LMX2531LQ1700E
LMX2531LQ1742
LMX2531LQ1778E
LMX2531LQ1910E
LMX2531LQ2080E
LMX2531LQ2265E
LMX2531LQ2570E
LMX2531LQ2820E
LMX2531LQ3010E
Low Band
553 - 592 MHz
592 - 634 MHz
634 - 680 MHz
680 - 735 MHz
749.5 - 755 MHz
725 - 790 MHz
765 - 818 MHz
795 - 850 MHz
831 - 885 MHz
880 - 933 MHz
863 - 920 MHz
917 - 1014 MHz
952 - 1137 MHz
1089 - 1200 MHz
1168 - 1395 MHz
1355 - 1462 MHz
1455 - 1566 MHz
High Band
1106 - 1184 MHz
1184 - 1268 MHz
1268 - 1360 MHz
1360 - 1470 MHz
1499 - 1510 MHz
1450 - 1580 MHz
1530 - 1636 MHz
1590 - 1700 MHz
1662 - 1770 MHz
1760 - 1866 MHz
1726 - 1840 MHz
1834 - 2028 MHz
1904 - 2274 MHz
2178 - 2400 MHz
2336 - 2790 MHz
2710 - 2925 MHz
2910 - 3132 MHz
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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