LT5517 - 40MHz to 900MHz Quadrature Demodulator

The LT®5517 is a 40MHz to 900MHz 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 up to 130MHz. The LT5517 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 LT5517 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. The LT5517 also provides excellent 50 Ohm impedance matching at the 2XLO port across its entire frequency range.

  • RF Input Frequency Range: 40MHz to 900MHz
  • High IIP3: 21dBm at 800MHz
  • High IIP2: 58dBm at 800MHz
  • I/Q Gain Mismatch: 0.3dB Max
  • I/Q Phase Mismatch: 0.7°
  • Noise Figure: 12.4dB at 800MHz
  • Conversion Gain: 3.3dB at 800MHz
  • Baseband Bandwidth: 130MHz
  • Single Ended, 50 Ohm Matched 2XLO Input
  • Shutdown Mode
  • 16-Lead QFN (4mm x 4mm) Package with Exposed Pad
LT5517 Typical Application
LT5517 Typical Application
  • Wireless Infrastructure
  • High Linearity Direct Conversion I/Q Receiver
  • High Linearity I/Q Demodulator
LT5517 Package Drawing
Order Information 订购型号
器件型号封装温度价格 (以 1 ~ 99 片为批量)价格 (以 1000 片为批量) *
LT5517EUF#PBF4x4 QFN-16E$10.54$7.40
LT5517EUF#TRPBF4x4 QFN-16E$7.50
DC678ALT5517EUF | 40MHz to 900MHz Direct Conversion Quadrature Demodulator$150.00
CAD 符号
LT5517 - 40MHz to 900MHz Quadrature Demodulator
R409 - Reliability Data
New 40MHz - 900MHz Quadrature Demodulator Offers High Spurious-Free Dynamic Range
LT5517 Footprints and Symbols