LT5568-2 是GSM/EDGE Optimized, High Linearity Direct Quadrature Modulator

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LT5568-2 - LT5568-2 是GSM/EDGE Optimized, High Linearity Direct Quadrature Modulator

LT5568-2是Linear公司的一款I/Q 调制器产品，LT5568-2 是GSM/EDGE Optimized, High Linearity Direct Quadrature Modulator，本站介绍了LT5568-2的封装应用图解、特点和优点、功能等，并给出了与LT5568-2相关的凌力尔特元器件型号供参考。

LT5568-2 - GSM/EDGE Optimized, High Linearity Direct Quadrature Modulator

LT5568-2 - GSM/EDGE Optimized, High Linearity Direct Quadrature Modulator - Linear Technology（凌力尔特）

功能描述

The LT5568-2 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.

特点

Optimized Image Rejection for 850MHz to 965MHz

High 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 Phase

Generator

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

50Ω DC Interface to Baseband Inputs

Low Carrier Leakage: –43dBm at 900MHz

High Image Rejection: –52dBc at 900MHz

16-Lead 4mm × 4mm QFN Package

应用