THIS ISSUE High Linearity Mixer Products High Speed Sampling LVDS

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THIS ISSUE High Linearity Mixer Products High Speed Sampling LVDS

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High Linearity Mixer Products High Speed Sampling LVDS DACs Wideband Applications
Logarithmic Detector Covers
accurately regulate transmit power wireless networks, measurement circuitry accuracy temperature drift critical factors. power measurement across broad temperature range that alleviates need extensive calibration attainable with ADI's latest logarithmic detector, AD8318.
World-Class Transmit Meets High Bandwidth Needs Vector Modulators
Base Station Solution Reference Design GPRS Phones Power Module with Integrated Power Control Previously Released Ready Design-In Single Chip
AD8318 been designed cover broad input frequency range from GHz. This enables wireless access equipment suppliers standardize AD8318 across multiple frequency/radio platforms. AD8318 been specified within cellular infrastructure, broadband fixed access, wireless local loop equipment. Maintaining drift accuracy across broad input frequency range made possible internal compensation circuitry along with single external resistor, which optimizes temperature drift frequency band interest.
AD8318 fabricated advanced SiGe bipolar process packaged space-saving, sq.16-lead LFCSP package.
VOUT
VOUT -0.5 -1.5 -2.5 (dBm)
100MHZ 900MHz 1.9GHz 2.2GHz 4GHz 5.3GHz 5.8GHz
VOUT +25°C VOUT -40°C VOUT +85°C Error +25°C Error -40°C Error +85°C
(dBm)
prices this bulletin quantities greater than 1,000 (unless otherwise noted), recommended lowest grade resale, U.S.A.
This figure shows transfer function AD8318 from GHz. device provides true linear-in-dB output response across input range. Variations across frequency band minimized.
This figure shows temperature drift accuracy GHz. error plots plotted with respect ideal straight line response. AD8318 delivers dynamic range with less than ±0.5 error from -40°C +85°C. This level temperature stability repeatable constant devices allowing simple one-point calibration test.
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ERROR (dB)
Receiver Path Mixer Products
traditional superheterodyne receiver applications, high linearity mixer products reduce complexity cost this traditional architecture. AD8344 downconverter covers frequencies ranging from GHz, AD8348 demodulator covers frequencies from GHz. Both devices have been designed support performance dynamic range required within wireless infrastructure equipment. broadband nature both devices eases radio filter placement, while providing path reduce size integration traditional superheterodyne receiver over more complex radio architectures.
AD8344 FILTER FILTER
ADF4xx AD8348 CDMA TETRA AD9216/AD9218 (10-BIT) AD9238 (12-BIT) AD9248 (14-BIT)
AD8344 bandwidth 1,200 port >400
AD8344
ENBL VPDC
BIAS
IIP3: Conversion gain typ: drive: ports: Enables power-down Single supply Package: 16-lead
LOIN VPLO VPMX RFIN
FOIN
AD8348 input 1,000 Demodulation bandwidth:
AD8348
VREF
IMXO
IOFS
IAIN
IOPP IOPN
Linear-in-dB with gain control range IIP3: (min gain), (max gain) (max gain)
ENBL
BIAS CELL
VREF
LOIP LOIN
IFIP IFIN
DIVIDE PHASE SPLITTER
VCMO
Phase/amplitude balance 0.5° phase/0.25 Integrated offset nulling
VGIN
GAIN CONTROL VCMO
MXIP MXIN ENVG
QXMO
QOFS
QAIN
QOPP QOPN
Single supply Package: 28-lead TSSOP
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Digitally Controlled
move digital sampling receiver technology been increasingly utilized communications infrastructure equipment multicarrier applications. This shift become economically possible advent ADI's high speed sampling analog-to-digital converters. order maximize dynamic range sampling receiver, often employed.
AD8370 fully differential, digitally controlled VGA. differential signal path provides many performance advantages, including lower second order distortion, higher output swing across noise floor, enables design take advantage inherent differential signal paths filters inputs. AD8370 bandwidth been fully specified number common MHz, MHz, MHz, MHz, MHz). device offers gain control ranges: gain mode high gain mode.
VCCI
VCCO
VCCO
PWUP ICOM INHI
BIAS CELL
VOCM OCOM OPHI
PREAMP INLO ICOM
TRANSCONDUCTANCE
OUTPUT
OPLO
OCOM
SHIFT REGISTER LATCHES
AD8370
DATA CLCK
LTCH
CODE LAST BITS GAIN CODE MSB) HIGH GAIN MODE VOLTAGE GAIN (V/V) GAIN MODE
VOLTAGE GAIN (dB)
0.409
HIGH GAIN MODE
GAIN MODE GAIN CODE
0.059
This figure shows gain control transfer characteristic AD8370. gain control implemented through 3-bit wide serial interface. higher gain codes, user achieve better than resolution.
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Wideband Transmit Applications Enabled LVDS Family
ncreasing demand high bandwidth data services, such mobile Internet access, video demand, broadband connectivity continues drive required network capacity. Shannon's dictates ways meet this challenge transmit channel: increased signal-to-noise ratio wider bandwidth.
AD9725/AD9726 LVDS family satisfies both requirements providing high sample rate (600 MSPS) exceptional dynamic range. World-class intermodulation distortion (IMD) noise performance maintained high output frequencies, allowing more flexible frequency plan simpler system design. Video Demand Deploying video demand distribution services entails upconversion wide bandwidth quadrature amplitude modulation (QAM) signals band, ranging from MHz. frequency translation process traditionally been accomplished using relatively costly upconverters that consume printed circuit board area excessive power. performance levels achieved AD972x family allow direct synthesis signals these frequencies, while meeting adjacent channel interference in-band carrier-to-noise ratio requirements. Power Amplifier Linearization latest wireless communication standards being deployed require synthesis much higher bandwidth signals than those previous standards. efficiency linearity power amplifier (PA) latest systems decrease signal bandwidths increase. result, linearization techniques must implemented improve efficiency. technique employed wideband systems digital predistortion, which transmitted signal intentionally altered compensate nonlinear response critical aspect this technique observation high order harmonics transmit signal. This turn requires that bandwidth seven times signal bandwidth synthesized measured output. AD972x family ideally suited this application since provides high sample rate needed synthesize bandwidth required predistortion, while achieving excellent ACLR performance high output frequencies.
AD6633 DIGITAL PREDISTORTION
AD9726
AD83xx
ADF4106 AD6636 AD9430 AD83xx ADF4106
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Transmit Sets World-Class Benchmarks Speed, Power, Performance
demand high bandwidth services continues increase, system designers faced with challenge: transmit more data fixed bandwidth increase data transmission rate given carrier-to-noise ratio.
AD9736 from Analog Devices meets both these challenges. world-class sample rate GSPS (gigasamples second) industry-leading noise intermodulation distortion (IMD) performance. This 14-bit allows designers utilize specialized digital signal processing (with ASICs FPGAs) providing access high speed core parallel voltage differential signaling (LVDS) bus. configured through standard serial peripheral interface (SPI®) that compatible with most microcontrollers DSPs three-wire four-wire arrangement. AD9736 achieves world-class noise performance much higher sample rate than competitive solutions, while dissipating significantly lower power. Intermodulation distortion performance maintained better than dBc, noise better than -155 dBm/Hz over output bandwidth from MHz, allowing very wide bandwidth signals synthesized higher intermediate frequencies (IFs) than previously realized. result simplified frequency planning lower component count, which ultimately reduces cost overall system. Digital timing challenges addressed providing optimal sampling incoming LVDS data stream utilizing patent-pending synchronization technique ensure that latched data presented core optimal fashion. AD9736 only choice systems requiring high bandwidth high signal synthesis reasonable power dissipation levels. facilitate system upgrade performance selection capability, this device joined pin-compatible 12-bit (AD9735) 10-bit (AD9734) versions, which together, form newest members industry leading TxDAC+® family.
complete information Analog Devices' extensive portfolio standalone integrated data converter solutions communications applications, visit www.analog.com/converters.
AD9736 BLOCK DIAGRAM
RESET CLK- CLK+
CONTROLLER
SCLK
DATACLK_OUT+ DATACLK_OUT-
LVDS DRIVER
CLOCK DISTRIBUTION
TWO-TONE SPECTRAL PERFORMANCE
DATACLK_IN+ DATACLK_IN- DB[13:0]+ DB[13:0]-
SYNCHRONIZATION
LVDS RECEIVER
14-BIT
IOUTA
IOUTB
FDAC 1.2GSPS FOUT1 251MHz FOUT2 252MHz
BANDGAP
REFERENCE CURRENT
Part Number AD9736 AD9735
Resolution (Bits)
Price ($U.S.) 34.95 19.95 14.95
-100 CENTER 251.5MHz 600kHz 5PAN 6MHz
AD9734
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RSET
VREF
Vector Modulators
odern cellular communications networks constantly looking increase capacity both voice data services. Many CDMA deployments satisfying these demands with larger multicarrier cell sites. Multicarrier power amplifiers (MCPA) rapidly being deployed help reduce cost operating expenses. Compared single carrier power amplifiers, MCPA requires extensive linearization remove intermodulation distortion generated.
MCPA circuits linearization often require precise accurate means measure control gain phase carriers. AD8340 AD8341 vector modulators enable precise amplitude phase adjustment. AD8340 operates over band from GHz, AD8341 operates from GHz. Both devices enable full 360° phase control attenuation.
Gain control range: continuous Phase control range: continuous 360° Control cartesian inputs bandwidth Output power disable function Single supply: Package: LFCSP
VPRF
QBBP
QBBM
VPS2
RFIP RFIM RFOP RFOM
CMOP
IBBP
IBBM
DSOP
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MSPS Digital Upconverter (DUC) with VersaCREST Crest Reduction Engine
markets continue emerge, base station manufacturers looking meet demanding performance requirements third generation (3G) standards, such CDMA2000, UMTS, TD-SCDMA. Traditionally, base station manufacturers have relied expensive, highly linear power amplifiers avoid output signal distortion caused large peaking signals. Analog Devices' solution reduces peakto-average power example from amplifier amplifier. This means manufacturers either reduce their power amplifier expense (while achieving dramatic power savings 75%), support four times coverage area (using existing PA).
plot multicarrier WCDMA signal with (blue) without (red) VersaCREST crest reduction engine. constant radius blue circle shows amplitude limited programmable threshold.
AD6633 Analog Devices' first digital upconverter with crest factor reduction technology CDMA2000, WCDMA, TD-SCDMA wireless transmitter applications. Operating MSPS processing four channels, AD6633 capable trading crest factor reduction against signal distortion. signal distortions allocated dynamically individual channel, allowing operators configure performance preferences high quality data lower quality voice communications. This converter also features programmable wideband channel filters that implemented CDMA2000, WCDMA, TD-SCDMA standards, enabling manufacturers single device across multiple platforms. features 20-bit input port (shared among processing channels), 18-bit parallel output ports. Filters include all-pass phase equalizer filters CDMA2000; programmable coefficient filters with resampling; interpolating filters (two channel); complex filters with frequency equalization fifthorder interpolating filters (one channel). offers full complex 32-bit fine tuning resolution, worst spur better than -105 dBc, output automatic gain control. AD6633 requires input/output core supplies. addition wireless infrastructure applications, AD6633 also suitable general-purpose communications applications where power crests system costs present design challenges.
more information request data sheet AD6633 wideband with VersaCREST, visit www.analog.com/AD6633.
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Nova Wireless Engine GSM/GPRS Feature Phone Reference Design
nalog Devices' Nova Wireless Engine reference design that allows cell phone manufacturers quickly develop family GPRS feature phones using SoftFone® Othello® product families. Nova Wireless Engine supports wide range hardware software capabilities, from high resolution cameras high quality stereo audio streaming video; connectivity including USB, IrDA,® Bluetooth®; removable media such secure digital memory cards. course, this engine first foremost high performance GSM/GPRS cell phone. configured combination frequency bands-850 MHz, MHz, 1,800 MHz, 1,900 MHz, including full quadband operation-and easily passes test parameters. Standby time order hours hours with standard size Li-Ion battery, precision power control transmitter section provides extended talk time. GPRS supported Class with four transmit four receive slots (five active slots total).
Software Nova Wireless Engine provided TTPCom Cambridge, England, with provision easy integration feature software customized user interface features. Analog Devices' VisualFone development system recommended software development. Recommended production testing solutions also available from third parties request.
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Based Analog Devices' SoftFone Platform Hermes family digital baseband processors Typhoon family analog baseband/power management Othello GPRS transceiver X-PA power amplifier with integrated power control
Advanced Video/Display Capabilities High resolution CMOS camera interface Color main subdisplays MPEG4 decode/playback Streaming video support External Connectivity/Storage SD/MMC Bluetooth IrDA Expandable Supports 4-band operation Easy interface coprocessors
Flexible Design Serve Multiple Products Basic camera phones Camcorder phones Multimedia phones Video phones Advanced Audio Features Stereo playback Software polyphonic ringtones Game tones Audio enhancement
X-PA
OTHELLO RADIO
TYPHOON FAMILY ANALOG BASEBAND BASEBAND A/D,
HERMES FAMILY DIGITAL BASEBAND
POWER AMPLIFIER RADIO TRANSCEIVER
CONTROL A/D, POWER MANAGEMENT
LOGIC SRAM
SPKR
VOICEBAND CODEC STEREO AUDIO
PERIPHERALS
IrDA CAMERA
FLASH, SRAM SOFTWARE
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Quad-Band GSM/GPRS Power Amplifier Module with Integrated Power Control
ADL5552 integrates ADI's industry-leading logarithmic detection technology into power amplifier module, while decreasing size previous generation power amplifier modules more than 50%. This patented technology provides accurate linear-in-dB output power control versus ramp-DAC output voltage shown figure below. linear-in-dB response curve responsible major advantages ADL5552, lower manufacturing costs. allows minimal calibration manufacturing, down single point band, while still featuring exceptional accuracy over wide dynamic temperature range. integrated control loop saves designers valuable time that once spent designing, synthesizing, laying control loop, exercise that took weeks often several spins optimize performance. ADL5552 decreases overall size control loop footprint decreases design time (TTM). ADL5552's control loop uses direct power detection, incorporating coupling coefficient directional coupler that measures actual power being transmitted. This method superior other indirect methods, such voltage control current sensing, because measures actual load power instead supply voltage current. Power control most accurate method poor VSWR situations, leading better ratings fewer dropped calls. ADL5552 boasts state-ofthe-art power added efficiency (PAE) maximum power, also superior performance lower power levels.
Features Integrated measurement control power Linear-in-dB power control Stable overtemperature, frequency, supply voltage Quad-band (E-GSM-850, DCS, PCS) High output power: 35/33/32 (GSM/DCS/PCS) Efficiency: Integrated input output matching circuitry GPRS compliant Class power supply range Benefits X-PA minimizes manufacturing costs
RFIN RFIN
VCC_GSM
RFOUT
BIAS GENERATION DETECTOR CONTROLLER
BIAS CONTROL
VENBL VSET RFOUT
BIAS GENERATION
(850/900)
VCC_DCS
package
point calibration
X-PA minimizes T
Integrated control loop Ease design: single ramp profiles possible
X-PA offers improved control fewer dropped calls power control approach X-PA saves battery power through high accuracy power control
ADL5552-GSM900 BAND
45dB DYNAMIC RANGE
0.25 0.75 1.25 1.75
POUT (dB)
RAMP-DAC OUTPUT
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Previously Released Ready Design-In
Part Number
AD9858
Price
$49.50
Description
AD9858 direct digital synthesizer (DDS) featuring 10-bit operating GSPS. AD9858 uses advanced technology, coupled with internal high speed, high performance converter form digitally programmable, complete high frequency synthesizer capable generating frequency-agile analog output sine wave MHz. AD8347 single chip, broadband quadrature demodulator. part integrates linear-in-dB AGC, divided between input baseband outputs following mixers. in-phase quadrature signals brought off-chip filtering prior final output amplifier stage, final output amplifiers allow user adjust common-mode level provide direct interface into dual-channel ADC. AD9218 dual, 10-bit monolithic sampling analog-to-digital converter with on-chip track-and-hold circuits optimized cost, power, small size, ease use. product operates MSPS conversion rate with outstanding dynamic performance over full operating range. Each channel operated independently. AD8348 single chip, broadband quadrature demodulator. part integrates linear-in-dB variable gain amplifier on-chip. baseband in-phase quadrature signals brought off-chip filtering prior final output amplifier stage. final output amplifiers provide single-ended differential conversion, enable user adjust common-mode level simplify interface with commonly used dual-channel converters. AD9777 16-bit member compatible family high speed dual interpolating TxDAC+® converters with maximum input data rate MSPS interpolation) maximum update rate MSPS interpolation). These converters feature selectable interpolation rate complex modulator that Fs/2, Fs/4, Fs/8. AD8351 fully differential amplifier designed drive high resolution (10/14 bits)/high speed ADCs (240 MSPS) frequencies within communications receivers. AD8351 simplifies driving, allowing user adjust gain through external resistor. also incorporates output common-mode adjustment circuit ease drive levels into ADC. AD8351 very distortion gain stage, along with noise wide gain bandwidth, making part ideally suited used digital receivers. AD8362 next-generation TruPwrdetector designed provide wide dynamic range signal power measurement (>60 dB). product provides accurately scaled linear-in-dB output response which equivalent root-mean-square (rms) input waveform. AD8362 ideally suited measurement complex modulated waveforms with large crest factors. AD8362 effectively waveform modulation independent, enabling user acquire precise level complex modulated (QAM/QPSK/ OFDM) waveforms found high capacity wireless wire line communications networks.
AD8347
$5.90
AD9218
$9.00
AD8348
$4.50
AD9777
$34.00
AD8351
$3.69
AD8362
$6.25
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Fast-Hopping with Integrated
synthesizers offer excellent frequency agility, tuning resolution, sweeping capabilities, their Nyquist output frequencies many applications. PLLs offer cleanup frequency gain, their acquisition time tends relatively long, they lack precise tuning resolution.
Worldwide Headquarters Technology P.O. 9106 Norwood, 02062-9106 U.S.A. Tel: 781.329.4700 (1.800.262.5643, U.S.A. only) Fax: 781.326.8703 Analog Devices, Inc. Europe Analog Devices 17-19, Georges Besse Parc Haute Technologie d'Antony F-92182 Antony Cedex, France Tel: 33.1.46.74.45.00 Fax: 33.1.46.74.45.01 Analog Devices, Inc. Japan Headquarters Pier Takeshiba South Tower Building 1-16-1 Kaigan, Minato-ku, Tokyo 105-6891, Japan Tel: 813.5402.8210 Fax: 813.5402.1063 Analog Devices, Inc. Southeast Asia Headquarters Tower, 4501-3 Times Square Matheson Street Causeway Hong Kong, Tel: 852.2.506.9336 Fax: 852.2.506.4755
AD9956 delivers best both synthesizer worlds: frequency gain PLL, agility DDS-all compact chip. AD9956 incorporates Analog Device's patented AgileRF technology deliver fast-hopping solution that generates output frequencies previously unattainable integrated chips. AD9956 contains MSPS with 48-bit tuning word 14-bit DAC, along with prescalar, phase detector, charge pump configuring PLL. clocking applications, capable PECL driver also on-chip. AD9956 includes this functionality single chip with total power consumption less than Applications include agile frequency synthesis, radar chirp source, automotive radar, test instrumentation, acoustic-optic device drivers.
MSPS, CMOS with 14-bit 48-bit tuning word Integrated circuitry Phase noise dBc/Hz offset (DAC output) AOUT SFDR (±100 offset) Tiny 48-lead package
Purchase licensed components Analog Devices sublicensed Associated Companies conveys license purchaser under Philips Patent Rights these components system, provided that system conforms Standard Specification defined Philips. 2004 Analog Devices, Inc. rights reserved. Trademarks registered trademarks property their respective owners. Inventory Code: COMM-JUNE-2004A Printed U.S.A. SB04473-95-6/04(0)
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THIS ISSUE High Linearity Mixer Products High Speed Sampling LVDS

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