LMX2502

Features: Small Size5.0 mm X 5.0 mm X 0.75 mm 28-Pin LLP Package RF Synthesizer SystemIntegrated RF VCOIntegrated Loop FilterLow Spurious, Low Phase Noise Fractional-N RF PLLBased on 11-Bit Delta Sigma Modulator10 kHz Frequency ResolutionIF Synthesizer SystemInteger-N IF PLLProgrammable Charge Pu...

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SeekIC No. : 004397383 Detail

LMX2502: Features: Small Size5.0 mm X 5.0 mm X 0.75 mm 28-Pin LLP Package RF Synthesizer SystemIntegrated RF VCOIntegrated Loop FilterLow Spurious, Low Phase Noise Fractional-N RF PLLBased on 11-Bit Delta S...

floor Price/Ceiling Price

Part Number:
LMX2502
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/3/28

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Product Details

Description



Features:

Small Size5.0 mm X 5.0 mm X 0.75 mm 28-Pin LLP Package
RF Synthesizer SystemIntegrated RF VCOIntegrated Loop FilterLow Spurious, Low Phase Noise Fractional-N RF PLLBased on 11-Bit Delta Sigma Modulator10 kHz Frequency Resolution
IF Synthesizer SystemInteger-N IF PLLProgrammable Charge Pump Current LevelsProgrammable Frequency
Supports Various Reference Frequencies19.20/19.68 MHz
Fast Lock Time: 500 µs
Low Current Consumption17 mA at 2.8 V
2.7 V to 3.3 V Operation
Digital Filtered Lock Detect Output
Hardware and Software Power Down Control






Application

Korean PCS CDMA Systems
Korean Cellular CDMA Systems





Pinout

  Connection Diagram




Specifications

VCO Freq Range 1619-1650 MHz
PLL Type PLL + VCO
Wireless Standard PCS
LVCMOS Outputs 1
Integrated Loop Filter Yes
RF PLL Sigma-Delta
IF PLL Integer
Phase Noise -138 dBc/Hz
Frequency Offset at 1.25MHz
Supply Current 17 mA
Supply Min 2.7 Volt
Supply Max 3.3 Volt
Temperature Min -30 deg C
Temperature Max 85 deg C
View Using Catalog


Parameter

Symbol

Ratings

Units

Supply Voltage

VCC,VDD

-0.3 to 3.6

V

Voltage on any pin
to GND

VI

-0.3toVCC+0.3

V

-0.3toVDD+0.3

V

Storage Temperature
Range

TSTG

-65 to 150






Description

LMX2502 and LMX2512 are highly integrated, high performance, low power frequency synthesizer systems optimized for Korean PCS and Korean Cellular CDMA (1xRTT, IS-95) mobile handsets. Using a proprietary digital phase locked loop technique, LMX2502 and LMX2512 generate very stable, low noise local oscillator signals for up and down conversion in wireless communications devices.

LMX2502 and LMX2512 include a voltage controlled oscillator (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 synthesizer system. LMX2502 supports the Korean PCS band and LMX2512 supports the Korean Cellular band.

LMX2502 and LMX2512 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 external VCO and loop filter, LMX2502 and LMX2512 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.

LMX2502 and LMX2512 are available in a 28-pin leadless leadframe package (LLP).

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LMX2502LQ1635 RFCMOS 0 2055 0 0 370000 10 104988510
LMX2502LQX1635 RFCMOS 0 2055 0 0 370000 10 104988510

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Design Tools


Title Size in Kbytes Date
LMX2502 Evaluation Board Instructions 575 Kbytes 28-Jul-2003 View Online Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.






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