厂商：Freescale
类别：16位单片机
厂商：Littelfuse
类别：保险丝
厂商：
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Atmel
类别：ATmega系列单片机
类别：电压基准
类别：监控电路
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特点Optimized Image Rejection for 850MHz to 965MHzHigh OIP3: +22.9dBm at 900MHz Low Output Noise Floor at 5MHz Offset: ? No RF: –159.4dBm/Hz ? POUT = 4dBm: –153dBm/Hz Integrated LO Buffer and LO Quadrature PhaseGenerator50Ω AC-Coupled Single-Ended LO and RF Ports50Ω DC Interface to Baseband InputsLow Carrier Leakage: –43dBm at 900MHzHigh Image Rejection: –52dBc at 900MHz16-Lead 4mm × 4mm QFN Package典型应用典型应用描述描述 The LT?5568-2 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 GSM, EDGE, CDMA, CDMA2000 and other systems that operate in the 850MHz to 965MHz band. It may be configured as an image reject upconverting 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 an on-chip RF transformer, which converts the differential mixer signals to a 50Ω single-ended output. The four balanced I and Q baseband input ports are intended for DC coupling from a source with a common mode voltage level of about 0.5V. The LO path consists of an LO buffer with single-ended input, and precision quadrature generators that produce the LO drive for the mixers. The supply voltage range is 4.5V to 5.25V.