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MAX2684EUE Datasheet(PDF) 11 Page - Maxim Integrated Products |
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MAX2684EUE Datasheet(HTML) 11 Page - Maxim Integrated Products |
11 / 18 page 3.5GHz Downconverter Mixers with Selectable LO Doubler ______________________________________________________________________________________ 11 Pin Description IF PORT S11 vs. RBIAS 1.2k Ω, 2k Ω, 820kΩ MAX2684 NAME FUNCTION 1 VCC Supply Voltage Input. Bypass with a 100pF capacitor as close to the pin as possible. 2, 3, 5, 9, 10, 12, 13, 15, EP GND Ground. Connect to ground plane with a low-inductance connection. Solder exposed paddle evenly to the board ground plane. PIN 4 RFIN RF Input Port to Mixer. Requires a matching network and a DC-blocking capacitor that may be part of this network. 6 ENX2 LO Frequency-Doubler Enable Input. Drive low to enable the LO doubler and run external LO at half frequency. Drive high to disable the LO doubler and run external LO at full frequency. 16 BIAS Bias-Setting Resistor Connection. A resistor, RBIAS, placed from BIAS to GND sets the linearity and supply current of the mixer. 11, 14 IFOUT-, IFOUT+ Differential, Open-Collector IF Output Ports of Mixer. Requires a matching network and pull-up inductors to VCC that can be part of this network. 8 LOX1 Full-Frequency Local-Oscillator Input to Downconverter Mixer. Requires a DC-blocking capacitor. Leave unconnected if this pin is not used. 7 LOX2 Half-Frequency Local-Oscillator Input to LO Frequency Doubler, LO Filter, and Downconverter Mixer. Requires a DC-blocking capacitor. Leave unconnected if this pin is not used. RFIN S11 vs. RBIAS 2k Ω, 1.2k Ω, 820kΩ Typical Operating Characteristics (continued) (MAX2683/MAX2684 EV kit, VCC = +5V, RBIAS = 1.2k Ω, ENX2 = GND, fRF = 3.6GHz, PRF = -20dBm, fLOX2 = 1650MHz for MAX2683 or fLOX2 = 1350MHz for MAX2684, PLO = -5dBm, all input/output ports terminated in 50 Ω, IFOUT+ and IFOUT- matched to single-ended 50 Ω load, TA = +25°C, unless otherwise noted.) |
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