DC2078A Analog Devices

DEMO MANUAL DC2078A LTC6430-20 50MHz TO 1000MHz 75 INPUT/OUTPUT CATV AMPLIFIER DESCRIPTION Demonstration circuit 2078A is a 75 input and 75 output amplifier for the CATV applications with 75 input and push-pull CATV amplifier featuring the LTC 6430-20. The output impedance. LTC6430-20 has a power gain of 20.8dB and is part of the Design files for this circuit board are available at LTC6430-YY amplifier series. DEMO MANUAL DC2078A PERFORMANCE SUMMARY T = 25C, V = 5V A CC Table 1. Typical Demo Board Performance Summary SYMBOL PARAMETER CONDITIONS VALUE/UNIT Power Supply V Operating Supply Range All V Pins Plus OUT 4.75V to 5.25V CC CC I Current Consumption Total Current 170mA CC OUTPUT THIRD- OUTPUT THIRD- SECOND THIRD OUTPUT 1DB ORDER INTERCEPT ORDER INTER- HARMONIC HARMONIC COMPRESSION NOISE 1 1 2 2 3 FREQUENCY POWER GAIN POINT MODULATION DISTORTION DISTORTION POINT FIGURE (MHz) S21 OIP3 OIM3 HD2 HD3 P1DB NF 50 19.1 46.5 -91.0 -86.4 -87.6 22.3 3.5 100 19.1 46.7 -91.4 -86.6 -82.7 22.6 3.5 200 19.1 45.6 -89.3 -82.2 -79.0 22.8 3.5 240 19.1 44.5 -86.9 -80.8 -78.2 22.9 3.4 300 19.1 43.7 -85.4 -73.4 -72.9 23.4 3.4 400 19.3 44.1 -86.2 -66.6 -73.2 24.0 3.4 500 19.4 46.8 -91.6 -62.6 24.2 3.5 600 19.2 47.0 - 92.0 24.3 3.8 700 18.8 46.3 -90.6 23.7 4.3 800 18.5 43.7 -85.4 22.8 4.7 900 18.4 41.9 -81.9 22.5 5.0 1000 18.5 41.5 -81.0 22.7 5.0 Units dB dBm dBc dBc dBc dBm dB Notes: All figures are referenced to J1 (Input Port) and J4 (Output Port). 1. Two-tone test conditions: Output power level = +1dBm/tone, tone spacing = 1MHz. 2. Single-tone test conditions: Output power level = +6dBm. 3. Small-signal noise figure. dc2078af 2