LTC5562 Wideband Low Power Active Mixer

By Analog Devices Inc 54

LTC5562 Wideband Low Power Active Mixer

Linear Technology/Analog Devices’ LTC5562 is a low power mixer optimized for applications requiring wide input bandwidth, low distortion, and low LO leakage. This mixer can be used for either upconverting or downconverting applications and provides a nominal conversion gain of 1 dB. The differential input is optimized for use with a 1:1 transmission-line balun, the input is 50_ broadband matched from 30 MHz to 7 GHz. The LO can be differential or single-ended and requires only -1 dBm of LO power to achieve excellent distortion and noise performance. The impedance match at the LO input is maintained during shutdown. The LTC5562 offers low LO leakage, greatly reducing the need for output filtering to meet LO suppression requirements. This mixer uses a 3.3 V supply for low power consumption and the enable control allows the part to be shut down for further power savings. The total mixer current is adjustable by simply adding a resistor in series with the LGND pin for applications requiring even lower power. The device comes in a small QFN package and has an operational temperature range of -40°C to +105°C. The LTC5562 is ideal for low power battery and handheld applications for test instruments, radios, and wireless applications.

Typical Applications

Features
  • Wideband frequency range to 7 GHz
  • Voltage supply: 2.7 V to 3.6 V
  • Current supply: 40 mA supply
  • Supply current adjustable down to 15 mA
  • Upconversion or downconversion
  • OIP3: +20 dBm at 3.6 GHz out
  • Conversion gain: +1 dB
  • Low LO drive: -4 dBm to +2 dBm
  • Temperature operating range: -40°C to +105°C
  • Package/case: 10-QNN
Applications
  • Portable test instruments
  • Battery powered
  • Handheld
  • Portable radios
  • Wireless infrastructure
  • Fixed wireless access equipment
  • VHF and UHF mixer
  • Wireless repeaters

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