LTC5599

PRODUCTION

LTC5599

30MHz to 1300MHz Low Power Direct Quadrature Modulator

PRODUCTION

PRODUCTION

90MHz to 1300MHz Direct Conversion Transmitter Application slide

EVM and Noise Floor vs RF Output Power and Digital Gain Setting with 1Ms/s 16-QAM Signal slide

Product Package 1 slide

90MHz to 1300MHz Direct Conversion Transmitter Application

EVM and Noise Floor vs RF Output Power and Digital Gain Setting with 1Ms/s 16-QAM Signal

Product Package 1

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Features

Frequency Range: 30MHz to 1300MHz
Low Power: 2.7V to 3.6V Supply; 28mA
Low LO Carrier Leakage: –51.5dBm at 500MHz
Side-Band Suppression: –52.6dBc at 500MHz
Output IP3: 20.8dBm at 500MHz
Low RF Output Noise Floor: –156dBm/Hz at 6MHz Offset, P_RF = 3dBm
Sine Wave or Square Wave LO Drive
SPI Control:
- Adjustable Gain: –19dB to 0dB in 1dB Steps Effecting Supply Current from 8mA to 35mA
- I/Q Offset Adjust: –65dBm LO Carrier Leakage
- I/Q Gain/Phase Adjust: –60dBc Side-Band Suppressed
24-Lead QFN 4mm × 4mm Package

Additional Details

The LTC5599 is a direct conversion I/Q modulator designed for low power wireless applications that enable direct modulation of differential baseband I and Q signals on an RF carrier. Single side-band modulation or side-band suppressed upconversion can be achieved by applying 90° phase-shifted signals to the I and Q inputs. The I/Q baseband input ports can be either AC or DC coupled to a source with a common mode voltage level of about 1.4V. The SPI interface controls the supply current, modulator gain, and allows optimization of the LO carrier feedthrough and side-band suppression, with sine wave or square wave LO drive. A fixed LC network on the LO and RF ports covers a continuous 90MHz to 1300MHz operation. An on-chip thermometer can be activated to compensate for gain-temperature variations. More accurate temperature measurements can be made using an on-chip diode. In addition, a continuous analog gain control (V_CTRL) pin can be used for fast power control.

Applications

Wireless Microphones
Battery Powered Radios
Ad-Hoc Wireless Infrastructure Networks
“White-Space” Transmitters
Software Defined Radios (SDR)
Military Radios

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Part Models 2

1ku List Price Starting From $5.54

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Technical Documents 6

LTC5599: 30MHz to 1300MHz Low Power Direct Quadrature Modulator Data Sheet 08/04/2014

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R550 Reliability Data 03/23/2018

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DC2091A - Demo Manual 11/20/2015

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Low-Power IQ Modulators for Generating FM 01/26/2018

Low Power IQ Modulator for Digital Communications 11/01/2015

Baseband Design Example for LTC5589/LTC5599 Low-Power IQ Modulator 07/01/2016

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Reference Materials 2

90mW I/Q Modulator 02/10/2016

Video

1

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Video

2017-09-18

A Very Low Power, High Performance I/Q Modulator

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Design Resources 2

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
LTC5599IUF#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC5599IUF#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC5599IUF#PBF
Pin/Package Drawing
24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

external-link

HTML Reliablity Data

external-link

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC5599IUF#TRPBF
Pin/Package Drawing
24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

external-link

HTML Reliablity Data

external-link

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Companion Parts 3

Parts	Product Life Cycle	Description
Baseband Differential Low-Pass Filters1
LTC6601-2	LAST TIME BUY	Low Power, Low Distortion, 5MHz to 27MHz, Pin Conﬁgurable Filter/ADC Driver
Fractional-N PLL1
LTC6948	LAST TIME BUY	Ultralow Noise 0.37GHz to 6.39GHz Fractional-N Synthesizer with Integrated VCO
Gain Blocks1
LTC6431-20	RECOMMENDED FOR NEW DESIGNS	20dB Gain Block, 50Ω IF Amplifier

reference details image

DC2091A

LTC5599 | 30MHz to 1300MHz Low Power Direct I/Q Modulator - DC590B Serial Board Required

DC2091A Demo Board

DC2091A Demo Board

DC2091A Demo Board

DC2091A Demo Board

DC2091A - Schematic

DC2091A - Demo Board Image

LTC5599 | 30MHz to 1300MHz Low Power Direct I/Q Modulator - DC590B Serial Board Required

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DC2091A Demo Board

DC2091A Demo Board

DC2091A Demo Board

DC2091A Demo Board

DC2091A - Schematic

DC2091A - Demo Board Image

DC2091A Demo Board

DC2091A Demo Board

DC2091A Demo Board

DC2091A Demo Board

DC2091A - Schematic

DC2091A - Demo Board Image

DC2091A

LTC5599 | 30MHz to 1300MHz Low Power Direct I/Q Modulator - DC590B Serial Board Required

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Product Detail

Demonstration circuit 2091A is optimized for evaluation of the LTC5599 low power direct quadrature modulator. The balanced I and Q baseband input ports can be either AC- or DC-coupled to a source with a common mode voltage level of about 1.4V. Fixed LC networks on the LO and RF ports cover a continuous 90MHz to 1300MHz range. The SPI interface controls the supply current, modulator gain, and allows optimization of the LO carrier feedthrough and side-band suppression.

Resources

ZIP

DC2091A - Design Files

1.00M

PDF

DC2091A - Schematic

67.00K

PDF

DC2091A - Demo Manual

648.00K

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evaluation kit item images

DC2091A

LTC5599 | 30MHz to 1300MHz Low Power Direct I/Q Modulator - DC590B Serial Board Required

LTspice 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Lt Spice

LTC6362/LTC5599 Demo Circuit - Low-Power I/Q Modulator Driver (Baseband Design)

Linduino 3

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

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Linduino download and documentation

Code Files

Linduino

LTC5599 - Linduino Header File

LTC5599 - DC2091A.INO

LTC5599 - Linduino.CPP File

ADIsimRF

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.

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