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Digitally tuned Hopping filter

LBM017A~LBM1000A Digitally tuned Hopping filter
Frequency range: 1.5~1000MHz

Features

  • Tuning Control: 8 bit parallel(TTL Level compatible)
  • Wide dynamic: Input P-1=30dBm
  • 2 ploe 0.1dB Chebyshev Response
  • Tuned speed ≤10us(fc>30MHz)
  • Up to 250 steps (Fc<120MHz) in band
  • Typical 2~3 octave bnadwidth coverage within 30~700MHz
  • High bias boltage low bias current(100V/1.5mA)
  • Package: Pins or SMA connector
  • Small DIP package
  • Operating Temperature range: – 40℃~+85℃

Specification

  • %3dB Bandwidth 3 ~10%
  • Fractional BW ripple1) ≤1%
  • I.L at center frequency 2) 2~6dB
  • I.L variance3) ≤2dB
  • Shape Factor (BW30 /BW3) ≤7:1
  • Impedance 50Ω
  • VSWR 2.0:1max
  • Input P-1 +17dBm(TYP)
  • DC power 5V/90mA , Vbb: +30V/18mA

Note:

1) This is the difference of %3dB bandwidth within the frequency band, see page 66 for typical curves.
2) Insertion loss at center frequency is typicalone, the wider passband the lower IL. Following method is used to
calculate insertion loss: IL×BW3dB%=20~25, for example %BW is 5% then IL is 4~5dB.
3) See typical curves on page 66.

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