LTC5598IUF#PBF

LTC®5598 is a direct I/Q modulator designed for high performance wireless applications, including wireless infrastructure. It allows direct modulation of an RF signal using differential baseband I and Q signals. It supports point-to-point microwave link, GSM, EDGE, CDMA, 700MHz band LTE, CDMA2000, CATV applications and other systems. It may also be configured as an image reject up converting mixer, by applying 90° phase-shifted signals to the I and Q inputs. The I/Q baseband inputs consist of voltage-to-current converters that in turn drive double-balanced mixers. The outputs of these mixers are summed and applied to a buffer, which converts the differential mixer signals to a 50 ohm single-ended buffered RF output. Application includes point-to-point microwave link, military radio, base station transmitter GSM/EDGE/CDMA2K, 700MHz LTE base station transmitter, satellite communication, CATV/Cable broadband modulator, 13.56MHz/UHF RFID modulator.

• Integrated LO buffer and LO quadrature phase generator
• RF frequency range from 5 to 1600MHz (VCC=5V, EN=5V, TA=25°C)
• Typical conversion voltage gain is -2dB (fLO=140MHz, fRF=139.9MHz, VCC=5V, EN=5V, TA=25°C)
• Typical output 1dB compression is 8.5dBm (fLO=140MHz, fRF=139.9MHz)
• Typical RF output noise floor is -161.2dBm/Hz (no baseband AC input signal)
• Typical image rejection is -50.4dBc (fLO=140MHz, fRF=139.9MHz, TA=25°C)
• Typical LO feedthrough is –55dBm (EN=High, fLO=140MHz, fRF=139.9MHz)
• Differential LO input power range from –10 to 20dBm (VCC=5V, EN=5V, TA=25°C)
• Supply voltage range from 4.5 to 5.25V (VCC=5V, EN=5V, TA=25°C)
• 24-lead QFN package, operating temperature range from -40°C to 85°C

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