LT5517EUF#PBF

LT5517 is a quadrature demodulator optimized for high linearity receiver applications where high dynamic range is important. It is suitable for communications receivers where an RF or IF signal is directly converted into I and Q baseband signals with a bandwidth upto 130MHz. It incorporates balanced I and Q mixers, LO buffer amplifiers and a precision, broadband quadrature generator derived from an on-chip divide-by-two circuit. The superior linearity and low noise performance of the device is achieved across its full frequency range. A well-balanced divide-by-two circuit generates precision quadrature LO carriers to drive the I mixer and the Q mixer. Consequently, the outputs of the I-channel and the Q-channel are well matched in amplitude, and their phases are 90° apart. It is used in application such as wireless Infrastructure, high linearity direct conversion I/Q receiver, high linearity I/Q demodulator etc.

• RF input frequency range is 40MHz to 900MHz
• Input 3rd order intercept is 21dBm typ at (2-tone, -10dBm/tone, ∆f = 200KHz)
• Input 2nd order intercept is 58dBm typ at (2-tone, -10dBm/tone, ∆f = 200KHz)
• I/Q gain mismatch is 0.3dB max at (TA = 25°C, VCC = 5V)
• I/Q phase mismatch is 0.7° typ at (TA = 25°C, VCC = 5V)
• Noise figure is 12.4dB typ at (TA = 25°C), supply current is 90mA typ at (TA = 25°C)
• Conversion gain is 3.3dB typ at (TA = 25°C, VCC = 5V), shutdown mode
• Baseband bandwidth is 130MHz typ at (TA = 25°C, VCC = 5V)
• Operating ambient temperature is -40°C to 85°C
• Package style is 16-lead plastic QFN

Notes

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