Low-Voltage High-Performance Mixer FM IF System with High-Speed RSSI

Product Details

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Features

  • Wideband data output (600 kHz minimum)
  • Fast RSSI rise and fall times
  • Low power consumption: 6.5 mA typical at 3 V
  • Mixer input to >500 MHz
  • Mixer conversion power gain of 11 dB at 240 MHz
  • Mixer noise figure of 12 dB at 240 MHz
  • XTAL oscillator effective to 150 MHz (LC oscillator to 1 GHz local oscillator can be injected)
  • 92 dB of IF amp/limiter gain
  • 25 MHz limiter small signal bandwidth
  • Temperature compensated logarithmic Received Signal Strength Indicator (RSSI) with a dynamic range in excess of 90 dB
  • RSSI output internal op amp
  • Internal op amps with rail-to-rail outputs
  • Low external component count; suitable for crystal/ceramic/LC filters
  • Excellent sensitivity: 0.54 μV into 50 Ω matching network for 12 dB SINAD (Signal-to-Noise And Distortion ratio) for 1 kHz tone with RF at 240 MHz and IF at 10.7 MHz
  • 10.7 MHz filter matching (330 Ω)
  • Power-down mode (ICC = 200 μA)
  • ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
  • Latch-up testing is done to JEDEC Standard JESD78 Class II, Level B

Target Applications

  • DECT (Digital European Cordless Telephone)
  • Digital cordless telephones
  • Digital cellular telephones
  • Portable high performance communications receivers
  • Single conversion VHF/UHF receivers
  • FSK and ASK data receivers
  • Wireless LANs

Design Resources

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