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LMX2434 - 产品图解:
LMX2434-用于射频个人通信的 5.0 GHz/2.5 GHz PLLatinum 低功耗双路频率合成器
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TI产品 - LMX2434介绍
LMX2434 - 用于射频个人通信的 5.0 GHz/2.5 GHz PLLatinum 低功耗双路频率合成器

LMX2434是TI公司的一款无产品,LMX2434是用于射频个人通信的 5.0 GHz/2.5 GHz PLLatinum 低功耗双路频率合成器,本页介绍了LMX2434的产品说明、应用、特性等,并给出了与LMX2434相关的TI元器件型号供参考。

LMX2434 - 用于射频个人通信的 5.0 GHz/2.5 GHz PLLatinum 低功耗双路频率合成器 - 无 - RFPPL与合成器 - TI公司(Texas Instruments,德州仪器)

产品描述

The LMX243x devices are high performance frequency synthesizers with integrated dual modulus prescalers. The LMX243x devices are designed for use as RF and IF local oscillators for dual conversion radio transceivers.

A 32/33 or a 16/17 prescale ratio can be selected for the 5.0 GHz LMX2434 RF synthesizer. An 8/9 or a 16/17 prescale ratio can be selected for both the LMX2430 and LMX2433 RF synthesizers. The IF circuitry contains an 8/9 or a 16/17 prescaler. Using a proprietary digital phase locked loop technique, the LMX243x devices generate very stable, low noise control signals for RF and IF voltage controlled oscillators. Both the RF and IF synthesizers include a two-level programmable charge pump. Both the RF and IF synthesizers have dedicated Fastlock circuitry with integrated timeout counters. Furthermore, only a single word write is required to power up and tune the synthesizers to a new frequency.

Serial data is transferred to the devices via a three-wire interface (DATA, LE, CLK). A low voltage logic interface allows direct connection to 1.8V devices. Supply voltages from 2.25V to 2.75V are supported . The LMX243x family features low current consumption:

LMX2430 (3.0 GHz/ 0.8 GHz)—2.8 mA/ 1.4 mA, LMX2433 (3.6 GHz/ 1.7 GHz) —3.2 mA/ 2.0 mA, LMX2434 (5.0 GHz/ 2.5 GHz)—4.6 mA/ 2.4 mA at 2.50V.

The LMX243x devices are available in 20-Pin TSSOP and 20-Pin ULGA surface mount plastic packages.

产品特性

  • Low Current Consumption
  • 2.25V to 2.75V Operation
  • Selectable Synchronous or Asynchronous Powerdown Mode
  • Selectable Dual Modulus Prescaler:
    •  LMX2430 RF: 8/9 or 16/17
    •  LMX2433 RF: 8/9 or 16/17
    • LMX2434 RF: 16/17 or 32/33
    • LMX243x IF: 8/9 or 16/17
  • Programmable Charge Pump Current Levels
    • RF and IF: 1 or 4 mA
  • Fastlock Technology with Integrated Timeout Counters
  • Digital Filtered Lock Detect Output
  • Analog Lock Detect Output (supports both Push-Pull and Open Drain configurations)
  • 1.8V MICROWIRE Logic Interface
  • Available in 20-Pin TSSOP and 20-Pin ULGA

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