LTC6412 AC ELECTRICAL CHARACTERISTICSThe l denotes specifi cations that apply over the full operatingtemperature range, otherwise specifi cations are at TA = 25°C. Typical AC electrical performance measured in demo board DC1464A(Figure 3, Test Circuit A) unless otherwise noted. Default operating conditions are VCC = 3.3V, EN = 0.8V, SHDN = 2.2V, +VG tied to VREF(negative gain slope mode), and ZSOURCE = ZLOAD = 50Ω unless otherwise noted.SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS380MHz Signal GMAX Maximum Gain –VG = 0V, Test Circuit B 17 dB GMIN Minimum Gain –VG = 1.2V, Test Circuit B –14 dB GRANGE Gain Range GMAX-GMIN 31 dB IM3 Third-Order Intermodulation f1 = 379.5MHz, f2 = 380.5MHz, –72 dBc POUT = –6dBm/Tone, –VG = 0V to 1.0V OIP3 Output Third-Order Intercept f1 = 379.5MHz, f2 = 380.5MHz, 30 dBm POUT = –6dBm/Tone, –VG = 0V to 1.0V P1dBGMAX Output 1dB Compression Point at Max Gain –VG = 0V (Note 6) 11 dBm NFGMAX Noise Figure at Maximum Gain –VG = 0V (Note 5) 10.5 dB NFGMIN Noise Figure at Minimum Gain –VG = 1.2V (Note 5) 42 dB Note 1: Stresses beyond those listed under Absolute Maximum Ratings Note 5: en can be calculated from 50Ω NF with the formula: may cause permanent damage to the device. Exposure to any Absolute en = √{4kT(50)(10NF/10 – 1)} Maximum Rating condition for extended periods may affect device where reliability and lifetime. RF input power rating is guaranteed by design and e engineering characterization, but not production tested. The absolute n = Input referred voltage noise in V/√Hz maximum continuous RF input power shall not exceed +15dBm NF = 50Ω noise fi gure in dB Note 2: The LTC6412C/LTC6412I are guaranteed functional over the k = Boltzmann’s constant = 1.38 • 10–23J/°K operating temperature range of –40°C to 85°C. T = Absolute temperature in °K = °C + 273 Note 3: The LTC6412C is guaranteed to meet specifi ed performance from Note 6: P1dB compression of the output amplifi er cannot be achieved 0°C to 70°C. It is designed, characterized and expected to meet specifi ed in the minimum gain state while complying with the absolute maximum performance from –40°C and 85°C but is not tested or QA sampled rating for input RF power. at these temperatures. The LT6412I is guaranteed to meet specifi ed performance from –40°C to 85°C. Note 4: Power gain is defi ned at ZSOURCE = 50Ω and ZLOAD = 200Ω. Voltage gain for this test condition is 6dB higher than the stated power gain. 6412fa 7
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