AD9125-M5372-EBZ Analog Devices Inc, AD9125-M5372-EBZ Datasheet

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AD9125-M5372-EBZ

Manufacturer Part Number
AD9125-M5372-EBZ
Description
16-BIT DAC Evaluation Board
Manufacturer
Analog Devices Inc
Datasheets

Specifications of AD9125-M5372-EBZ

Silicon Manufacturer
Analog Devices
Application Sub Type
DAC
Kit Application Type
Data Converter
Silicon Core Number
AD9125
Features
Come With Clocking And Analog Quadrature Modulator Circuits
Kit Contents
Quick Start Guide, Board, Software Updates
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
Output frequency range: 1500 MHz to 2500 MHz
Modulation bandwidth: >500 MHz (3 dB)
1 dB output compression: 14 dBm @ 1900 MHz
Noise floor: −158 dBm/Hz
Sideband suppression: −45 dBc @ 1900 MHz
Carrier feedthrough: −45 dBm @ 1900 MHz
Single supply: 4.75 V to 5.25 V
24-lead LFCSP_VQ
APPLICATIONS
Cellular communication systems
WiMAX/broadband wireless access systems
Satellite modems
GENERAL DESCRIPTION
The ADL5372 is a member of the fixed-gain quadrature modulator
(F-MOD) family designed for use from 1500 MHz to 2500 MHz.
Its excellent phase accuracy and amplitude balance enable high
performance intermediate frequency or direct radio frequency
modulation for communication systems.
The ADL5372 provides a >500 MHz, 3 dB baseband bandwidth,
making it ideally suited for use in broadband zero IF or low
IF-to-RF applications and in broadband digital predistortion
transmitters.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
CDMA2000/GSM/WCDMA
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The ADL5372 accepts two differential baseband inputs and a
single-ended, local oscillator (LO) and generates a single-
ended output.
The ADL5372 is fabricated using the Analog Devices, Inc.
advanced silicon-germanium bipolar process. It is available in
a 24-lead, exposed-paddle, Pb-free, LFCSP. Performance is
specified over a −40°C to +85°C temperature range. A Pb-free
evaluation board is available.
QBBN
QBBP
IBBP
IBBN
LOIN
LOIP
FUNCTIONAL BLOCK DIAGRAM
1500 MHz to 2500 MHz
Quadrature Modulator
QUADRATURE
©2006 Analog Devices, Inc. All rights reserved.
SPLITTER
PHASE
Figure 1.
ADL5372
VOUT
www.analog.com

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AD9125-M5372-EBZ Summary of contents

Page 1

FEATURES Output frequency range: 1500 MHz to 2500 MHz Modulation bandwidth: >500 MHz (3 dB output compression: 14 dBm @ 1900 MHz Noise floor: −158 dBm/Hz Sideband suppression: −45 dBc @ 1900 MHz Carrier feedthrough: −45 dBm @ ...

Page 2

ADL5372 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Typical Performance Characteristics ...

Page 3

SPECIFICATIONS 25° dBm single-ended; baseband I/Q amplitude = 1.4 V p-p differential sine waves in quadrature with a 500 bias; baseband I/Q frequency ( ...

Page 4

ADL5372 Parameter Conditions LO INPUTS 1 LO Drive Level Characterization performed at typical level Input Return Loss See Figure 9 for a plot of return loss vs. frequency BASEBAND INPUTS Pin IBBP, Pin IBBN, Pin QBBP, Pin QBBN I and ...

Page 5

ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage VPOS IBBP, IBBN, QBBP, QBBN LOIP and LOIN Internal Power Dissipation θ (Exposed Paddle Soldered Down) JA Maximum Junction Temperature Operating Temperature Range Storage Temperature Range Stresses above those listed under Absolute ...

Page 6

ADL5372 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic 12, COM1 to COM4 21 VPS1 to VPS5 8, 9 LOIP, LOIN 13 VOUT ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS 25° dBm single-ended; baseband I/Q amplitude = 1.4 V p-p differential sine waves in quadrature with a 500 bias; baseband I/Q frequency (f ) ...

Page 8

ADL5372 0 –5 –10 –15 –20 –25 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 LO FREQUENCY (MHz) Figure 9. Return Loss (S11) of LOIP 0 –10 – –40° +85°C A –30 ...

Page 9

SSB OUTPUT POWER (dBm) –30 CARRIER FEEDTHROUGH (dBm) –40 –50 SIDEBAND SUPPRESSION (dBc) THIRD ORDER (dBc) –60 –70 SECOND ORDER (dBc) –80 0.2 0.6 1.0 1.4 1.8 2.2 BASEBAND INPUT VOLTAGE (V p-p) Figure 15. Second- and Third-Order Distortion, ...

Page 10

ADL5372 –20 SSB OUTPUT POWER (dBm) –30 FEEDTHROUGH (dBm) –40 –50 SIDEBAND SUPPRESSION (dBc) –60 SECOND ORDER (dBc) –70 –6 –4 – AMPLITUDE (dBm) Figure 21. Second- and Third-Order Distortion, Carrier Feedthrough, Sideband Suppression, and SSB P vs. ...

Page 11

THEORY OF OPERATION CIRCUIT DESCRIPTION Overview The ADL5372 can be divided into five circuit blocks: the LO interface, the baseband voltage-to-current (V-to-I) converter, the mixers, the differential-to-single-ended (D-to-S) stage, and the bias circuit. A detailed block diagram of the device ...

Page 12

ADL5372 BASIC CONNECTIONS Figure 25 shows the basic connections for the ADL5372. QBBP QBBN IBBN IBBP COM1 1 18 COM1 F-MOD VPS1 3 16 VPS1 4 15 VPS1 5 14 VPS1 EXPOSED PADDLE 6 13 C12 0.1µF ...

Page 13

OPTIMIZATION The carrier feedthrough and sideband suppression performance of the ADL5372 can be improved by using optimization techniques. Carrier Feedthrough Nulling Carrier feedthrough results from minute dc offsets that occur between each of the differential baseband inputs ideal ...

Page 14

ADL5372 APPLICATIONS INFORMATION DAC MODULATOR INTERFACING The ADL5372 is designed to interface with minimal components to members of the Analog Devices family of DACs. These DACs feature an output current swing from mA, and the interface described ...

Page 15

An example is shown in Figure 32 with a third-order, elliptical, low-pass filter with frequency of 3 MHz. Matching input and output impedances makes the filter design easier, so the shunt resistor chosen is 100 Ω, producing ...

Page 16

ADL5372 WCDMA OPERATION The ADL5372 is suitable for operation in a WCDMA environment, providing better than 72 adjacent channel power ratio (ACPR output power of −10 dBm, with a 20 MHz noise floor of −157 dBm/Hz. ...

Page 17

TRANSMIT DAC OPTIONS The AD9779 recommended in the previous sections of this data sheet means the only DAC that can be used to drive the ADL5372. There are other appropriate DACs, depending on the level of performance ...

Page 18

ADL5372 EVALUATION BOARD Populated RoHS-compliant evaluation boards are available for evaluation of the ADL5372. The ADL5372 package has an exposed paddle on the underside. This exposed paddle must be soldered to the board (see the Power Supply and Grounding section). ...

Page 19

CHARACTERIZATION SETUP AEROFLEX 250kHz TO 6GHz SIGNAL GENERATOR FREQ 4MHz BIAS 0.5V BIAS 0.5V AGILENT 34401A MULTIMETER 0.175 ADC VPOS +5V AGILENT E3631A POWER SUPPLY 5.000 0.175A 6V – + The primary setup used to characterize the ADL5372 is shown ...

Page 20

ADL5372 TEKTRONIX AFG3252 DUAL FUNCTION ARBITRARY FUNCTION GENERATOR CH1 1MHz AMPL 700mV p-p PHASE 0° CH2 1MHz AMPL 700mV p-p PHASE 90° 0° AGILENT E3631A POWER SUPPLY 5.000 0.350A 6V VPOS +5V – +5V VPOS +5V AGILENT E3631A ...

Page 21

OUTLINE DIMENSIONS PIN 1 INDICATOR 1.00 0.85 0.80 SEATING PLANE ORDERING GUIDE Model Temperature Range 1 ADL5372ACPZ-R2 –40°C to +85°C 1 ADL5372ACPZ-R7 –40°C to +85°C 1 ADL5372ACPZ-WP –40°C to +85°C 1 ADL5372-EVALZ Pb-free part. 4.00 BSC SQ ...

Page 22

ADL5372 NOTES Rev Page ...

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NOTES Rev Page ADL5372 ...

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ADL5372 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06511-0-12/06(0) T Rev Page ...

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