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MAX3558 Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX3558 Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 8 page Quad-Output LNA with AGC for Cable TV Applications _______________________________________________________________________________________ 3 AC ELECTRICAL CHARACTERISTICS (VCC = 4.75V to 5.25V, fRFIN = 50MHz to 878MHz, 75 Ω system impedance, VAGC_ = 3V, VSHDN_ = VCC, RBIAS = 1.1kΩ, RPDREF = 10kΩ, LLB = 82nH, TA = 0°C to +70°C, unless otherwise noted. Typical values are at VCC = 5V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER CONDITIONS MIN TYP MAX UNITS Frequency Range Gain specification is met across the frequency band 50 878 MHz Differential output load, maximum gain (Note 2) 4.0 6.8 9.3 Voltage Gain Differential output load, VAGC_ = 0.5V, minimum gain -27.6 -15.7 dB Gain Flatness 50MHz to 878MHz ±0.4 dB Noise Figure Worst case across band, 75 Ω source, at maximum gain 8.4 9.9 dB Maximum gain -1.1 Input P1dB Compression Point 10dB gain reduction +1.3 dBm Maximum gain, PIN = -9dBm 14.4 Input 3rd-Order Intercept Point (IIP3) (Note 3) 10dB gain reduction, PIN = -9dBm (Note 2) 15.6 dBm Maximum gain, PIN = -9dBm +45.9 Input 2nd-Order Intercept Point (IIP2) (Note 3) 10dB gain reduction, PIN = -9dBm (Note 2) +29.5 dBm Input Return Loss Any gain setting 9 dB Output Return Loss 75 Ω differential output load 8 dB OUT_ to RFIN Isolation 65 dB RFIN to OUT_ Shutdown Isolation VGA in shutdown, fRFIN = 54MHz to 72MHz 40 dB Output-to-Output Isolation Between any two outputs 45 dB Power-Detector Operating Range (per Channel) fRFIN = 50MHz to 878MHz (Note 4) -3 +17 dBmV AGC Attack Range (per Channel) RPDREF = 800 Ω to 12kΩ, flat input of 130 channel loading (Notes 4, 5) -3 +6 dBmV AGC Attack Accuracy (per Channel) 130 channel loading (Notes 2, 4) -2.2 +2.2 dBmV Attack Point Variation Any one output in shutdown mode (Note 4) -0.5 +0.5 dBm AGC Attack Slope Change of POUT_ over 12dB change in PRFIN after reaching AGC attack point (Notes 2, 4) -2 +2 dB Note 1: Guaranteed by design and characterization. Note 2: Guaranteed by production test. Note 3: Measured with two input tones (f1 = 800MHz, f2 = 845MHz). Note 4: PDOUT connected to PDAGC and AGC_. Note 5: PIN is single-tone equivalent to 130 channel loading. |
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