DC1984A

Demonstration circuit 1984A showcases the LTC®5510. wideband high linearity active mixer for VHF/UHF up mixer applications, where a 70MHz input signal is upconverted to the 100MHz to 1GHz output range. Its input port is optimized for 30MHz to 2.6GHz, and its output port is optimized for 10MHz to 1.3GHz. The LO input can be either high side or low side. The LTC5510 is a high linearity active mixer optimized for applications requiring very wide input bandwidth, low distortion and low LO leakage. The IC includes a double-balanced active mixer with an input buffer and a high speed LO amplifier. The mixer can be used for both up- and down-conversion and requires only 0dBm of LO power to achieve excellent distortion and noise performance. The LTC5510 is optimized for 5V, but can also be used with a 3.3V supply with reduced performance. The shutdown function allows the part to be disabled for further power saving.

• Supply voltage range from 4.5 to 5.3V (5V supply, R1 = open (default configuration))
• Supply current of 98mA (5V supply, R1 = open (default configuration))
• Operating temperature range from -40°C to 105°C
• Turn-on time of 0.6µs (EN: low to high), turn-off time of 0.6µs (EN: high to low)
• Conversion gain of 1.1dB (fOUT = 456MHz), SSB noise figure of 11.3dB (fOUT = 456MHz)

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