LT5572是1.5GHz to 2.5GHz High Linearity Direct Quadrature Modulator

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LT5572 - LT5572是1.5GHz to 2.5GHz High Linearity Direct Quadrature Modulator

LT5572是Linear公司的一款I/Q 调制器产品，LT5572是1.5GHz to 2.5GHz High Linearity Direct Quadrature Modulator，本站介绍了LT5572的封装应用图解、特点和优点、功能等，并给出了与LT5572相关的凌力尔特元器件型号供参考。

LT5572 - 1.5GHz to 2.5GHz High Linearity Direct Quadrature Modulator

LT5572 - 1.5GHz to 2.5GHz High Linearity Direct Quadrature Modulator - Linear Technology（凌力尔特）

功能描述

The LT5572 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 PHS, GSM, EDGE, TD-SCDMA, CDMA, CDMA2000, W-CDMA and other systems. It may also be conﬁ gured as an image reject up-converting mixer by applying 90° phase-shifted signals to the I and Q inputs. The high impedance 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.

特点

Direct Conversion from Baseband to RF

High Output: –2.5dB Conversion Gain

High OIP3: +21.6dBm at 2GHz

Low Output Noise Floor at 20MHz Offset:No RF: –158.6dBm/HzPOUT = 4dBm: –152.5dBm/Hz

Low Carrier Leakage: –39.4dBm at 2GHz

High Image Rejection: –41.2dBc at 2GHz

4-Channel W-CDMA ACPR: –67.7dBc at 2.14GHz

Integrated LO Buffer and LO Quadrature Phase Generator

50Ω AC-Coupled Single-Ended LO and RF Ports

High Impedance DC Interface to Baseband Inputs with 0.5V Common Mode Voltage

16-Lead QFN 4mm × 4mm Package