LT5528
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LT5528

1.5GHz to 2.4GHz High Linearity Direct Quadrature Modulator

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Part Details
Part Models 2
1ku List Price
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Features
  • 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
Additional Details
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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
Part Models 2
1ku List Price
price unavailable

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Jul 28, 2022

- 22_0058

Obsolescence of Generics LT5500/LT5511/LT5515/LT5518/LT5528/LT5558/LT5571/LTC5544

LT5528EUF#PBF

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Part Models

Product Lifecycle

PCN

Jul 28, 2022

- 22_0058

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Obsolescence of Generics LT5500/LT5511/LT5515/LT5518/LT5528/LT5558/LT5571/LTC5544

LT5528EUF#PBF

LAST TIME BUY

LT5528EUF#TRPBF

LAST TIME BUY

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Software & Part Ecosystem

Evaluation Kit

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