DC1233A-A

DC1233A-A is a demo board for the LT5579 1.5GHz to 3.8GHz high linearity upconverting mixer. The LT5579 is a high performance upconverting mixer IC optimized for output frequencies in the 1.5GHz to 3.8GHz range. It features single-ended LO input and RF output ports to simplify board layout and to reduce system cost. The LT5579 offers a superior alternative to passive mixers. Unlike passive mixers which have conversion loss and require high LO drive levels, the LT5579 delivers conversion gain at significantly lower LO input levels and is less sensitive to LO power level variations. Only -1dBm of LO power is needed, and the balanced design results in low LO signal leakage to the RF output. The lower LO drive level requirements, combined with the excellent LO leakage performance, translate into lower LO signal contamination of the output signal.

• Suitable for WiMAX applications
• 456MHz IF input, low-side LO input, 3.6GHz RF output
• 3.3V supply voltage, 226mA supply current
• 1.1GHz to 4GHz LO input frequency range
• LO input power range from -5 to +2dBm
• Output noise floor of -155.5dBm/Hz (POUT = -5dBm)
• Single sideband noise figure of 12dB
• Conversion gain of -0.5dB
• 330 to 505MHz IF input frequency range (12dB return loss, LO applied)
• Operating temperature range from -40°C to 85°C

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