LT5528

LAST TIME BUY

1.5GHz to 2.4GHz High Linearity Direct Quadrature Modulator

Viewing:

Overview

  • Direct Conversion to 1.5GHz to 2.4GHz
  • High OIP3: 21.8dBm at 2GHz
  • Low Output Noise Floor at 5MHz Offset:
    • No RF: –159.3dBm/Hz
    • POUT = 4dBm: –151.8dBm/Hz
  • 4-Ch W-CDMA ACPR: –66dBc at 2.14GHz
  • 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: –42dBm at 2GHz
  • High Image Rejection: 45dB at 2GHz
  • 16-Lead QFN 4mm × 4mm Package

The LT5528 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 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.

Applications

  • Infrastructure Tx for DCS, PCS and UMTS Bands
  • Image Reject Up-Converters for PCS and UMTS Bands
  • Low-Noise Variable Phase-Shifter for 1.5GHz to 2.4GHz Local Oscillator Signals

LT5528
1.5GHz to 2.4GHz High Linearity Direct Quadrature Modulator
1.5GHz to 2.4GHz Direct Conversion Transmitter Application  with LO Feed-Through and Image Calibration Loop W-CDMA ACPR, AltCPR and Noise vs RF Output  Power at 2140MHz for 1, 2 and 4 Channels Product Package 1
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet

This is the most up-to-date revision of the Data Sheet.

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts Product Life Cycle Description
Phase-Locked Loop (PLL) Synthesizers 1
LTC6948 LAST TIME BUY Ultralow Noise 0.37GHz to 6.39GHz Fractional-N Synthesizer with Integrated VCO
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Tools & Simulations

ADIsimRF

ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

Open Tool

Evaluation Kits

eval board
DC729A

LT5528EUF 2GHz I/Q Modulator W/Current BB Interface

Product Details

DC729A: Demo Board for the LT5528 1.5GHz to 2.4GHz High Linearity Direct Quadrature Modulator.


 


DC729A
LT5528EUF 2GHz I/Q Modulator W/Current BB Interface
DC729A - Schematic

Latest Discussions

Recently Viewed