IRL1404Z

      The IRL1404Z is a fully integrated VCO (Voltage-Controlled Oscillator) IC designed for IRL1404Z/IRL1404Z/IRL1404Z triple-band application. The IC is ideal for use in the trans- mitter modulation loop by providing extremely small form factor and low phase noise. The IC has two VCOs, one for GSM and a second for DCS/PCS. The IC has two separate buffer amplifiers to drive an external high power amplifier, one for IRL1404Z band and the other one for IRL1404Z/ IRL1404Z bands. The IC also has a differential buffer ampli- fier to drive a mixer for the offset PLL. The resonant circuits of the VCOs are fully integrated in the chip to ease the application of the IC. The high quality factor of the embedded tank circuit achieves very low phase noise characteristics at the VCO output. The only required external components are a couple of supply bypass capacitors and matching components. A control pin for controlling the oscillation frequency is shared by the two VCOs. The IRL1404Z IC is provided in a 20-pin 4x4 LLP (Leadless Leadframe package).
      Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. The LH1500 is robust, ideal for telecom and ground fault applications. It is a SPST normally open switch (1 Form A) that replaces electromechanical relays in many applications. It is constructed using a GaAIAs LED for actuation control and an integrated monolithic die for the switch output. The die, fabricated in a high-voltage dielectrically isolated technology, is comprised of a photodiode array, switch control circuitry and MOSFET switches. In addition, it employs current-limiting cir- cuitry which meets FCC 68.302 and other regulatory voltage surge requirements when overvoltage protec- tion is provided.
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