ADL5385ACPZ-R7 Analog Devices Inc, ADL5385ACPZ-R7 Datasheet

IC, QUAD MODULATOR 50MHZ-2.2GHZ LFCSP-24

ADL5385ACPZ-R7

Manufacturer Part Number
ADL5385ACPZ-R7
Description
IC, QUAD MODULATOR 50MHZ-2.2GHZ LFCSP-24
Manufacturer
Analog Devices Inc
Datasheet

Specifications of ADL5385ACPZ-R7

Frequency Range
50MHz To 2.2GHz
Rf Type
Quadrature
Supply Voltage Range
4.75V To 5.5V
Rf Ic Case Style
LFCSP
No. Of Pins
24
Operating Temperature Range
-40°C To +85°C
Design Resources
Broadband Low EVM Direct Conversion Transmitter Using LO Divide-by-2 Modulator (CN0144)
Function
Modulator
Lo Frequency
50MHz ~ 2.2GHz
Rf Frequency
50MHz ~ 2.2GHz
P1db
8dBm
Noise Floor
-160dBm/Hz
Output Power
2.6dBm
Current - Supply
240mA
Voltage - Supply
4.75 V ~ 5.25 V
Test Frequency
2.15GHz
Package / Case
24-VFQFN, 24-CSP Exposed Pad
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ADL5385ACPZ-R7TR
FEATURES
Output frequency range: 50 MHz to 2200 MHz
1 dB output compression: 11 dBm @ 350 MHz
Noise floor: –159 dBm/Hz @ 350 MHz
Sideband suppression: −50 dBc @ 350 MHz
Carrier feedthrough: −46 dBm @ 350 MHz
Single supply: 4.75 V to 5.5 V
24-lead, Pb-free LFCSP_VQ with exposed paddle
APPLICATIONS
Radio-link infrastructure
Cable modem termination systems
Wireless infrastructure systems
Wireless local loop
WiMAX/broadband wireless access systems
PRODUCT DESCRIPTION
The ADL5385 is a silicon, monolithic, quadrature modulator
designed for use from 50 MHz to 2200 MHz. Its excellent phase
accuracy and amplitude balance enable both high performance
intermediate frequency (IF) and direct radio frequency (RF)
modulation for communication systems.
The AD5385 takes the signals from two differential baseband
inputs and modulates them onto two carriers in quadrature
with each other. The two internal carriers are derived from
a single-ended, external local oscillator input signal at twice the
frequency as the desired carrier output. The two modulated
signals are summed together in a differential-to-single-ended
amplifier designed to drive 50 Ω loads.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The ADL5385 can be used as either an IF or a direct-to-RF
modulator in digital communication systems. The wide
baseband input bandwidth allows for either baseband drive or
drive from a complex IF. Typical applications are in radio-link
transmitters, cable modem termination systems, and broadband
wireless access systems.
The ADL5385 is fabricated using the Analog Devices, Inc.,
advanced silicon germanium bipolar process and is packaged in
a 24-lead, Pb-free LFCSP_VQ with exposed paddle.
Performance is specified over –40°C to +85°C. A Pb-free
evaluation board is also available.
QBBN
QBBP
IBBN
IBBP
LOIP
LOIN
FUNCTIONAL BLOCK DIAGRAM
ENBL
BIAS
Quadrature Modulator
50 MHz to 2200 MHz
©2006 Analog Devices, Inc. All rights reserved.
QUADRATURE
DIVIDE-BY-2
SPLITTER
PHASE
Figure 1.
TEMPERATURE
SENSOR
ADL5385
www.analog.com
TEMP
VOUT

Related parts for ADL5385ACPZ-R7

ADL5385ACPZ-R7 Summary of contents

Page 1

FEATURES Output frequency range: 50 MHz to 2200 MHz 1 dB output compression: 11 dBm @ 350 MHz Noise floor: –159 dBm/Hz @ 350 MHz Sideband suppression: −50 dBc @ 350 MHz Carrier feedthrough: −46 dBm @ 350 MHz Single ...

Page 2

ADL5385 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 Product Description......................................................................... 1 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and Functional Descriptions.......................... 7 Typical Performance Characteristics ............................................. 8 Circuit Description......................................................................... 12 ...

Page 3

SPECIFICATIONS Unless otherwise noted 25° −7 dBm; I/Q inputs = 1.4 V p-p differential sine waves in quadrature on a 500 bias; baseband frequency = 1 MHz; LO ...

Page 4

ADL5385 Parameter Conditions Second Baseband Harmonic (F − (2 × Third Baseband Harmonic ( × Output IP2 F1 = 3.5 MHz 4.5 MHz, P Output IP3 F1 = 3.5 MHz ...

Page 5

Parameter Conditions @ +85°C after optimization at +25°C @ −40°C after optimization at +25°C Second Baseband Harmonic (F − (2 × Third Baseband Harmonic ( × Output IP2 F1 = +3.5 MHz ...

Page 6

ADL5385 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage VPOS IBBP, IBBN, QBBP, QBBN Range LOIP and LOIN Internal Power Dissipation θ (Exposed Paddle Soldered Down) JA Maximum Junction Temperature Operating Temperature Range Storage Temperature Range ESD CAUTION Stresses above ...

Page 7

PIN CONFIGURATION AND FUNCTIONAL DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Description Connection. These pins can be left open or tied to ground 15, COM1, COM2, Power Supply Common Pins. ...

Page 8

ADL5385 TYPICAL PERFORMANCE CHARACTERISTICS Unless otherwise noted 25° −7 dBm; I/Q inputs = 1.4 V p-p differential sine waves in quadrature on a 500 mV dc bias baseband frequency = ...

Page 9

SSB OUTPUT POWER (dBm) CARRIER FEEDTHROUGH (dBm) SIDEBAND SUPPRESSION (dBc) SECOND-ORDER DISTORTION (dBc) –30 THIRD-ORDER DISTORTION (dBc) –40 –50 –60 –70 –80 0.2 0.6 1.0 1.4 1.8 2.2 BASEBAND AMPLITUDE (V p-p) Figure 9. SSB Output Power, Second- and ...

Page 10

ADL5385 –20 –30 –40 –50 –60 –70 –80 –90 –10 –8 –6 –4 – AMPLITUDE (dBm) Figure 15. Distribution of Sideband Suppression vs. LO Input Power at 50 MHz and 350 MHz –20 –30 –40 –50 –60 –70 ...

Page 11

AT 20MHz OFFSET FROM LO FREQUENCY Figure 21. 20 MHz Offset Noise Floor Distribution, Output Frequency = 350 MHz, ...

Page 12

ADL5385 CIRCUIT DESCRIPTION OVERVIEW The ADL5385 can be divided into five sections: the local oscillator (LO) interface, the baseband voltage-to-current (V-to-I) converter, the mixers, the differential-to-single-ended (D-to-S) amplifier, and the bias circuit. A detailed block diagram of the device is ...

Page 13

BASIC CONNECTIONS Figure 27 shows the basic connections for the ADL5385. QBBP QBBN IBBN RFPQ RFNQ RFNI CFPQ CFNQ CFNI 0Ω 0Ω 0Ω OPEN OPEN OPEN RTQ RTI OPEN OPEN 19 COM3 ENBL 12 VPS2 11 20 COM3 CLOP LO ...

Page 14

ADL5385 When an offset applied to the I-channel inputs, IOS V = 500 /2, while IOPP IOS V = 500 mV − V /2, such that IOPN IOS V − IOPP ...

Page 15

APPLICATIONS DAC MODULATOR INTERFACING The ADL5385 is designed to interface with minimal components to members of the Analog Devices family of digital-to-analog converters (DAC). These DACs feature an output current swing from mA, and the interface described ...

Page 16

ADL5385 Using AD9777 Auxiliary DAC for Carrier Feedthrough Nulling The AD9777 features an auxiliary DAC that can be used to inject small currents into the differential outputs for each channel. The auxiliary DAC can produce the small offset currents necessary ...

Page 17

ACPR2 (5.25MHz) –65 ACPR3 (6.00MHz) –70 ACPR1 (750kHz) –75 –80 MER –85 –90 –24 –22 –20 –18 –16 CARRIER POWER (dBm) Figure 38. ACP1, ACP2, ACP3, and Modulation Error Ratio (MER) vs. Output Power for 256 QAM ...

Page 18

ADL5385 LO GENERATION USING PLLs Analog Devices has a line of PLLs that can be used for generating the LO signal. Table 4 lists the PLLs together with their maximum frequency and phase noise performance. Table 4. PLL Selection Table ...

Page 19

EVALUATION BOARD A populated, RoHS-compliant ADL5385 evaluation board is available. The ADL5385 has an exposed paddle underneath the package, which is soldered to the board. The evaluation board is designed without any components on the underside so that heat can ...

Page 20

ADL5385 Yuping Toh Figure 42. Layout of Evaluation Board Rev Page ...

Page 21

CHARACTERIZATION SETUP SSB SETUP Figure diagram of the characterization test stand setup for the ADL5385, which is intended to test the product as a single-sideband modulator. The Aeroflex IFR3416 signal generator provides the I and Q inputs ...

Page 22

... INDICATOR 1.00 0.85 0.80 SEATING PLANE ORDERING GUIDE Model Temperature Range 1 ADL5385ACPZ-WP –40°C to +85°C ADL5385ACPZ-R2 1 –40°C to +85°C 1 ADL5385ACPZ-R7 –40°C to +85°C 1 ADL5385-EVALZ Pb-free part. 4.00 BSC SQ 0.60 MAX 0.50 BSC TOP 3.75 VIEW BSC SQ 0.50 0.40 ...

Page 23

NOTES Rev Page ADL5385 ...

Page 24

ADL5385 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06118-0-10/06(0) Rev Page ...

Related keywords