LT5572

PRODUCTION

1.5GHz to 2.5GHz High Linearity Direct Quadrature Modulator

Data Sheet Product Selection Table

Part Models: 2
1ku List Price: Starting From $6.22

Viewing:

Overview

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/Hz
P_OUT = 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

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 conﬁgured 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.

Applications

Infrastructure Tx for DCS, PCS and UMTS Bands
Image Reject Up-Converters for DCS, PCS and UMTS Bands
Low Noise Variable Phase Shifter for 1.5GHz to 2.5GHz Local Oscillator Signals

Part Models: 2
1ku List Price: Starting From $6.22

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT5572EUF#PBF	16-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT5572EUF#TRPBF	16-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

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

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

Parts	Product Life Cycle	Description
LTC5588-1	PRODUCTION	200MHz to 6000MHz Quadrature Modulator with Ultrahigh OIP3

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