LT5557EUF#PBF

LT®5557 active mixer is optimized for high linearity, wide dynamic range downconverter applications. The IC includes a high speed differential LO buffer amplifier driving a double-balanced mixer. Broadband, integrated transformers on the RF and LO inputs provide single-ended 50 ohm interfaces. The differential IF output allows convenient interfacing to differential IF filters and amplifiers, or is easily matched to drive a single-ended 50 ohm load, with or without an external transformer. The frequency range of both ports is easily extended with simple external matching. Application includes cellular, CDMA, WCDMA, TD-SCDMA and UMTS infrastructure, wiMAX, wireless infrastructure receiver, wireless infrastructure PA linearization, 900MHz/2.4GHz/3.5GHz WLAN.

• Low LO leakage, very few external components
• Supply voltage range from 2.9 to 3.9V (VCC=3.3V, EN=High, TA=25°C)
• Typical supply current is 25.1mA (VCC1 (Pin 7), VCC=3.3V, EN=High, TA=25°C)
• Maximum shutdown current is 100µA (VCC=3.3V, EN=High, TA=25°C)
• Minimum input high voltage (On) is 2.7V (VCC=3.3V, EN=High, TA=25°C)
• Typical EN pin input current is 53µA (EN=3.3V DC, VCC=3.3V, EN=High, TA=25°C)
• Input frequency range from 1600 to 2300MHz (no external matching (midband))
• Output frequency range from 0.1 to 600MHz (requires appropriate IF matching)
• Typical input return loss is <gt/>10dB (ZO=50 ohm, 1000MHz to 5000MHz)
• 16-lead plastic QFN, operating temperature range from -40°C to 85°C

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