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LMX2377U

Features: Ultra Low Current ConsumptionUpgrade and Compatible to the LMX2370 2.7V to 5.5V Operation 1.8V to 5.0V MICROWIRE Logic Interface Selectable Synchronous or Asynchronous PowerdownMode:ICC-PWDN = 1 µA typical Selectable Dual Modulus Prescaler:Main: 16/17 or 32/33Aux: 8/9 or 16/17 Sel...

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SeekIC No. : 004397371 Detail

LMX2377U: Features: Ultra Low Current ConsumptionUpgrade and Compatible to the LMX2370 2.7V to 5.5V Operation 1.8V to 5.0V MICROWIRE Logic Interface Selectable Synchronous or Asynchronous PowerdownMode:ICC-P...

LMX2377U Data Sheet

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Part Number:
LMX2377U
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

Ultra Low Current Consumption
Upgrade and Compatible to the LMX2370
2.7V to 5.5V Operation
1.8V to 5.0V MICROWIRE Logic Interface
Selectable Synchronous or Asynchronous PowerdownMode:ICC-PWDN = 1 µA typical
Selectable Dual Modulus Prescaler:Main: 16/17 or 32/33Aux: 8/9 or 16/17
Selectable Charge Pump TRI-STATE® Mode
Programmable Charge Pump Current LevelsMain and Aux: 0.95 or 3.8 mA
Selectable Fastlock™ Mode for the Main Synthesizer
Open Drain Analog Lock Detect Output
Available in 20-Pin TSSOP, 24-Pin CSP, and 20-PinUTCSP


Application

Mobile Handsets(GSM, GPRS, W-CDMA, CDMA, PCS, AMPS, PDC,DCS)
Cordless Handsets(DECT, DCT)
Wireless Data
Cable TV Tuners


Pinout

Connection Diagram


Specifications

Power Supply Voltage
VCC to GND                                                  −0.3V to +6.5V
VP Main to GND                                            −0.3V to +6.5V
VP Aux to GND                                             −0.3V to +6.5V
Voltage on any pin to GND (VI)VI
must be < +6.5V                                   −0.3V to VCC+0.3V
Storage Temperature Range (TS)             −65˚C to +150˚C
Lead Temperature (solder 4 s) (TL)                         +260˚C
TSSOP JA Thermal Impedance                          114.5˚C/W
CSPJA  Thermal Impedance                                 112˚C/W


Description

The LMX2377U device is a high performance frequencysynthesizer with integrated dual modulus prescalers. TheLMX2377U device is designed for use as a local oscillator forthe first and second RF of a dual conversion radio trans-ceiver.

A 16/17 or a 32/33 prescale ratio can be selected for theMain synthesizer. An 8/9 or a 16/17 prescale ratio can beselected for the Aux synthesizer. Using a proprietary digitalphase lock technique, the LMX2377U device generates verystable, low noise control signals for UHF and VHF voltagecontrolled oscillators. Both the Main and Aux synthesizersinclude a two-level programmable charge pump. The Mainsynthesizer has dedicated Fastlock circuitry.

Serial data is transferred to the devices via a three-wireinterface (Data, LE, Clock). The low voltage logic interfaceallows connection to 1.8V devices. Supply voltages from2.7V to 5.5V are supported. The LMX2377U features ultralow current consumption, typically 3.5 mA at 3.0V.

The LMX2377U devices are available in 20-Pin TSSOP,24-Pin CSP, and 20-Pin UTCSP surface mount plastic pack-ages.




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