LTC5589

Modulator by Analog Devices (38 more products)

Note : Your request will be directed to Analog Devices.

The LTC5589 from Linear Technology is a low power direct quadrature modulator designed for low power wireless applications from 700 MHz to 6 GHz that enables direct modulation of differential baseband I and Q signals on an RF carrier. Single side-band modulation or side-band suppressed upconversion can be achieved by applying 90° phase-shifted signals to the I and Q inputs. The I/Q baseband input ports can be either AC or DC coupled to a source with a common mode voltage level of about 1.4V. The SPI interface controls the supply current, modulator gain, and allows adjustments of I and Q gain and phase imbalance to optimize the LO carrier feedthrough and side-band suppression. The LO port can be driven with sine wave or square wave LO drive.

An on-chip thermometer can be activated to compensate for gain-temperature variations. More accurate temperature measurements can be made using an on-chip diode. In addition, a continuous analog gain control (VCTRL) pin can be used for fast power control. It requires a single 2.7 V to 3.6 V supply and draws only 29.5 mA current. It has -50 dBc sideband suppression and -43 dBm carrier leakage without calibration. With on-chip calibration resources, performance can be further improved to –60dBc (Sideband Suppression) and –65dBm (Carrier Leakage). Moreover the device has an excellent noise floor of –157 dBm/Hz at 30 MHz with an OIP3 of 19 dBm. It is available in a 24-Lead 4 × 4 mm Plastic QFN Package and is ideal for military radios, software defined radios and wireless microphones.

Product Specifications

    Product Details

    • Part Number :
      LTC5589
    • Manufacturer :
      Analog Devices
    • Description :
      700MHz to 6GHz Low Power Direct Quadrature Modulator

    General Parameters

    • Modulation Type :
      I/Q Vector
    • RF Frequency :
      700 MHz to 6 GHz
    • RF Frequency :
      700 MHz to 6 GHz
    • LO Frequency :
      700 MHz to 6 GHz
    • Integration :
      Power Amplifier, VCO
    • P1dB :
      -7.1 to 4.6 dBm(Output)
    • IP3 :
      19 dBm
    • IP2 :
      28.3 to 70.6 dBm
    • Voltage :
      2.7 to 3.6 V
    • Noise Floor :
      -159.6 dBm/Hz
    • Sideband Suppression :
      41.5 dBc
    • Return Loss :
      14.8 to 25 dB (O/P)
    • Current :
      29.5 mA
    • Dimension :
      4mm × 4mm
    • Package Type :
      Surface Mount
    • Impedance :
      50 Ohms
    • Operating_Temperature :
      -40 to 105 Degree C
    • Storage_Temperature :
      -65 to 150 Degree C
    • Application Industry :
      Cellular, Military, Broadcast
    • Application Standards :
      Radio
    • Modulation/IF Power :
      20 dBm
    • RF Output Power :
      -17 to -5.7 dBm

    Technical Documents

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