MAX2021ETX+-MAX2021ETX+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX2021ETX+T ,High-Dynamic-Range, Direct Up-/Downconversion 650MHz to 1200MHz Quadrature Mod/DemodApplications Information section for details.The junction temperature must not exceed +150°C.Note 2 ..
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MAX2022ETX+ ,High-Dynamic-Range, Direct Up/Downconversion 1500MHz to 3000MHz Quadrature Modulator/DemodulatorApplications● Single and Multicarrier WCDMA/UMTS and Ordering Information appears at end of data ..
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MAX2021ETX+-MAX2021ETX+T
High-Dynamic-Range, Direct Up-/Downconversion 650MHz to 1200MHz Quadrature Mod/Demod
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
EVALUATION KIT AVAILABLE
General Description
The MAX2021 low-noise, high-linearity, direct upcon-
version/downconversion quadrature modulator/demod-
ulator is designed for RFID handheld and portal
readers, as well as single and multicarrier 650MHz to
1200MHz GSM/EDGE, cdma2000®, WCDMA, and
iDEN®base-station applications. Direct conversion
architectures are advantageous since they significantly
reduce transmitter or receiver cost, part count, and
power consumption as compared to traditional IF-based
double conversion systems.
In addition to offering excellent linearity and noise perfor-
mance, the MAX2021 also yields a high level of compo-
nent integration. This device includes two matched
passive mixers for modulating or demodulating in-phase
and quadrature signals, two LO mixer amplifier drivers,
and an LO quadrature splitter. On-chip baluns are also
integrated to allow for single-ended RF and LO connec-
tions. As an added feature, the baseband inputs have
been matched to allow for direct interfacing to the trans-
mit DAC, thereby eliminating the need for costly I/Q
buffer amplifiers.
The MAX2021 operates from a single +5V supply. It is
available in a compact 36-pin TQFN package (6mm x
6mm) with an exposed pad. Electrical performance is
guaranteed over the extended -40°C to +85°C temper-
ature range.
Applications
RFID Handheld and Portal Readers
Single and Multicarrier WCDMA 850 Base Stations
Single and Multicarrier cdmaOne™ and cdma2000
Base Stations
GSM 850/GSM 900 EDGE Base Stations
Predistortion Transmitters and Receivers
WiMAX Transmitters and Receivers
Fixed Broadband Wireless Access
Military Systems
Microwave Links
Digital and Spread-Spectrum Communication Systems
Video-on-Demand (VOD) and DOCSIS Compliant
Edge QAM Modulation
Cable Modem Termination Systems (CMTS)
Features650MHz to 1200MHz RF Frequency RangeScalable Power: External Current-Setting
Resistors Provide Option for Operating Device in
Reduced-Power/Reduced-Performance Mode36-Pin, 6mm x 6mm TQFN Provides High Isolation
in a Small Package
Modulator Operation:Meets 4-Carrier WCDMA 65dBc ACLR+21dBm Typical OIP3+58dBm Typical OIP2+16.7dBm Typical OP1dB-32dBm Typical LO Leakage43.5dBc Typical Sideband Suppression-174dBm/Hz Output Noise DensityDC to 550MHz Baseband Input Allows a Direct
Launch DAC Interface, Eliminating the Need for
Costly I/Q Buffer AmplifiersDC-Coupled Input Allows Ability for Customer
Offset Voltage Control
Demodulator Operation:+35.2dBm Typical IIP3+76dBm Typical IIP2> 30dBm IP1dB9.2dB Typical Conversion Loss9.3dB Typical NF0.06dB Typical I/Q Gain Imbalance0.15°I/Q Typical Phase Imbalance
Ordering Information
PARTTEMP RANGEPIN-PACKAGE
MAX2021ETX+ -40°C to +85°C 36 TQFN-EP*
(6mm x 6mm)
MAX2021ETX+T -40°C to +85°C 36 TQFN-EP*
(6mm x 6mm)
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
T = Tape and reel.
cdma2000 is a registered certification mark and registered service mark of the Telecommunications Industry Association.
iDEN is a registered trademark of Motorola Trademark Holdings, LLC.
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCC_ to GND........................................................-0.3V to +5.5V
BBI+, BBI-, BBQ+, BBQ- to GND...............-3.5V to (VCC+ 0.3V)
LO, RF to GND Maximum Current......................................30mA
RF Input Power...............................................................+30dBm
Baseband Differential I/Q Input Power...........................+20dBm
LO Input Power...............................................................+10dBm
RBIASLO1 Maximum Current.............................................10mA
RBIASLO2 Maximum Current.............................................10mA
RBIASLO3 Maximum Current.............................................10mA
Continuous Power Dissipation (Note 1)...............................7.6W
Operating Case Temperature Range (Note 2)....-40°C to +85°C
Maximum Junction Temperature.....................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Soldering Temperature (reflow).......................................+260°C
DC ELECTRICAL CHARACTERISTICS
(MAX2021 Typical Application Circuit, VCC= 4.75V to 5.25V, GND = 0V, I/Q inputs terminated into 50Ωto GND, LO input terminated into
50Ω, RF output terminated into 50Ω, 0V common-mode input, R1 = 432Ω, R2 = 619Ω, R3 = 332Ω, TC= -40°C to +85°C, unless otherwise
noted. Typical values are at VCC= 5V, TC= +25°C, unless otherwise noted.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Supply VoltageVCC4.755.005.25V
Total Supply CurrentITOTALPins 3, 13, 15, 31, 33 all connected to VCC230271315mA
Total Power Dissipation13551654mW
RECOMMENDED AC OPERATING CONDITIONS
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNIT
RF Frequency (Note 5) fRF 650 1200 MHz
LO Frequency (Note 5) fLO 750 1200 MHz
IF Frequency (Note 5) fIF 550 MHz
LO Power Range PLO -6 +3 dBm
Note 1:Based on junction temperature TJ= TC+ (θJCx VCCx ICC). This formula can be used when the temperature of the
exposed pad is known while the device is soldered down to a PCB. See the Applications Informationsection for details.
The junction temperature must not exceed +150°C.
Note 2:TCis the temperature on the exposed pad of the package. TAis the ambient temperature of the device and PCB.
Note 3:Junction temperature TJ= TA+ (θJAx VCCx ICC). This formula can be used when the ambient temperature of the PCB is
known. The junction temperature must not exceed +150°C.
Note 4:Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
PACKAGE THERMAL CHARACTERISTICS
TQFN
Junction-to-Ambient
Thermal Resistance (θJA) (Notes 3, 4).......................+34°C/W
Junction-to-Case
Thermal Resistance (θJC) (Notes 1, 4)......................+8.5°C/W
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
AC ELECTRICAL CHARACTERISTICS (Modulator)
(MAX2021 Typical Application Circuit, VCC= 4.75V to 5.25V, GND = 0V, I/Q differential inputs driven from a 100ΩDC-coupled source,
0V common-mode input, PLO= 0dBm, 750MHz ≤fLO≤1200MHz, 50ΩLO and RF system impedance, R1 = 432Ω, R2 = 619Ω, R3 =
332Ω, TC= -40°C to +85°C. Typical values are at VCC= 5V, VBBI= 1.4VP-Pdifferential, VBBQ= 1.4VP-Pdifferential, fIQ= 1MHz, fLO=
900MHz, TC= +25°C, unless otherwise noted.) (Note 6)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
BASEBAND INPUT
Baseband Input Differential Impedance fIQ = 1MHz 53 Ā
BB Common-Mode Input Voltage
Range -3.5 0 +3.5 V
LO INPUT
LO Input Return Loss RF and IF terminated (Note 7) 12 dB
I/Q MIXER OUTPUTS
fLO = 900MHz 21.1 Output IP3 OIP3 fBB1 = 1.8MHz,
fBB2 = 1.9MHz fLO = 1000MHz 22.3 dBm
Output IP2 OIP2 fBB1 = 1.8MHz, fBB2 = 1.9MHz 57.9 dBm
Output P1dB fBB = 25MHz, PLO = 0dBm 16.7 dBm
Output Power POUT0.7 dBm
Output Power Variation Over
Temperature TC = -40°C to +85°C -0.016 dB/°C
Output-Power Flatness Sweep fBB, PRF flatness for fBB from 1MHz
to 50MHz 0.15 dB
ACLR (1st Adjacent Channel
5MHz Offset) Single-carrier WCDMA (Note 8) 65 dBc
LO Leakage No external calibration, with each
baseband input terminated in 50Ā -32 dBm
PLO = 0dBm 30 39.6 Sideband Suppression No external calibration,
fLO = 920MHz PLO = -3dBm 43.5 dBc
Output Noise Density Each baseband input terminated in 50Ā
(Note 9) -174 dBm/Hz
Output Noise Floor POUT = 0dBm, fLO = 900MHz (Note 10) -168 dBm/Hz
RF Return Loss (Note 7) 15 dB
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
RF INPUT
Conversion LossLCfBB = 25MHz (Note 11)9.2dB
Noise FigureNFfLO = 900MHz9.3dB
Noise Figure Under-BlockingNFBLOCKfBLOCKER = 900MHz, PRF = 11dBm,
fRF = fLO = 890MHz (Note 12)17.8dB
Input Third-Order InterceptIIP3fRF1 = 925MHz, fRF2 = 926MHz, fLO =
900MHz, PRF = PLO = 0dBm, fSPUR = 24MHz35.2dBm
Input Second-Order InterceptIIP2fRF1 = 925MHz, fRF2 = 926MHz, fLO =
900MHz, PRF = PLO = 0dBm, fSPUR = 51MHz76dBm
Input 1dB CompressionP1dBfIF = 50MHz, fLO = 900MHz, PLO = 0dBm30dBm
I/Q Gain MismatchfBB = 1MHz, fLO = 900MHz, PLO = 0dBm0.06dB
PLO = 0dBm1.1I/Q Phase MismatchfBB = 1MHz,
fLO = 900MHzPLO = -3dBm0.15Degrees
Minimum Demodulation 3dB
BandwidthLO = 1160MHz LO > RF> 550MHz
Minimum 1dB Gain FlatnessLO = 1160MHz LO > RF> 450MHz
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Conversion LossLc10.1dB
Noise FigureNFSSB10.4dB
Noise Figure Under BlockingNFBLOCKfBLOCKER = 700MHz, PBLOCKER = 11dBm,
fLO = 965MHz, fRF = 865MHz, (Note 12)19dB
fRF1 = 780MHz, fRF2 = 781MHz,
PRF1 = PRF2 = 0dBm, fIF1 = 185MHz,
fIF2 = 184MHz
Input Third-Order Intercept
PointIIP3
fRF1 = 780MHz, fRF2 = 735MHz,
PRF1 = PRF2 = 0dBm, fIF1 = 185MHz,
fIF2 = 230MHz
dBm
AC ELECTRICAL CHARACTERISTICS (Demodulator)
(MAX2021 Typical Application Circuitwhen operated as a demodulator, VCC= 4.75V to 5.25V, GND = 0V, I/Q outputs are recombined
using network shown in Figure 5. Losses of combining network not included in measurements. VDCfor BBI+. BBI-, BBQ+, BBQ- = 0V,
PRF= PLO= 0dBm, 750MHz ≤fLO≤1200MHz, 50ΩLO and RF system impedance, R1 = 432Ω, R2 = 619Ω, R3 = 332Ω, TC= -40°C to
+85°C. Typical values are at VCC= 5V, TC= +25°C, unless otherwise noted.) (Note 6)
AC ELECTRICAL CHARACTERISTICS (Demodulator LO = 965MHz)
(Typical Application Circuitwhen operated as a demodulator. I/Q outputs are recombined using network shown in Figure 5. Losses of
combining network not included in measurements. RF and LO ports are driven from 50Ωsources. Typical values are for TA= +25°C,
VCC= 5.0V, I/Q DC voltage return = 0V, PRF= 0dBm, PLO= 0dBm, fRF= 780MHz, fLO= 965MHz, fIF= 185MHz, unless otherwise noted.)
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
fRF1 = 780MHz, fRF2 = 781MHz,
PRF1 = PRF2 = 0dBm, fIF1 = 185MHz,
fIF2 = 184MHz, fIF1+ fIF2 term
Input Second-Order Intercept
PointIIP2
fRF1 = 780MHz, fRF2 = 735MHz,
PRF1 = PRF2 = 0dBm, fIF1 = 185MHz,
fIF2 = 230MHz, fIF1+ fIF2 term
dBm
2LO - 2RF, fRF = 872.5MHz, PRF = -10dBm84
3LO - 3RF, fRF = 903.333MHz, PRF = -10dBm99
3RF - 2LO, fRF = 705MHz, PRF = -10dBm105
4RF - 3LO, fRF = 770MHz, PRF = -10dBm114
Spurious Relative to a
Fundamental at 780MHz
5RF - 4LO, fRF = 809MHz, PRF = -10dBm115
dBc
Input Compression from LinearPRF = 0dBm to 21dBm0.17dB
I/Q Gain Mismatch0.05dB
I/Q Phase Mismatch0.4Degrees
1dB Conversion Loss FlatnessfLO = 965MHz, fLO > fRF400MHz
RF Return Loss17dB
LO Return Loss12dB
Note 5:Recommended functional range. Not production tested. Operation outside this range is possible, but with degraded
performance of some parameters.
Note 6:Guaranteed by design and characterization.
Note 7:Parameter also applies to demodulator topology.
Note 8:Single-carrier WCDMA with 10.5dB peak-to-average ratio at 0.1% complementary cumulative distribution function,
PRF=-10dBm (PRFis chosen to give -65dBc ACLR).
Note 9:No baseband drive input. Measured with the inputs terminated in 50Ω. At low output levels, the output noise is thermal.
Note 10:The output noise versus POUTcurve has the slope of LO noise (Ln dBc/Hz) due to reciprocal mixing.
Note 11:Conversion loss is measured from the single-ended RF input to single-ended combined baseband output.
Note 12:The LO noise (L = 10(Ln/10)), determined from the modulator measurements can be used to deduce the noise figure
under-blocking at operating temperature (Tp in Kelvin), FBLOCK= 1 + (Lcn - 1) Tp / To + LPBLOCK/ (1000kTo), where= 290K, PBLOCKin mW, k is Boltzmann’s constant = 1.381 x 10(-23) J/K, and Lcn = 10(Lc/10), Lc is the conversion loss.
Noise figure under-blocking in dB is NFBLOCK= 10 x log (FBLOCK). Refer to Application Note 3632: Wideband LO Noise in
Passive Transmit-Receive Mixer ICs.
AC ELECTRICAL CHARACTERISTICS (Demodulator LO = 965MHz) (continued)
(Typical Application Circuitwhen operated as a demodulator. I/Q outputs are recombined using network shown in Figure 5. Losses of
combining network not included in measurements. RF and LO ports are driven from 50Ωsources. Typical values are for TA= +25°C,
VCC= 5.0V, I/Q DC voltage return = 0V, PRF= 0dBm, PLO= 0dBm, fRF= 780MHz, fLO= 965MHz, fIF= 185MHz, unless otherwise noted.)
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
Typical Operating Characteristics
(MAX2021 Typical Application Circuit, VCC= 4.75V to 5.25V, GND = 0V, I/Q differential inputs driven from a 100ΩDC-coupled source,
0V common-mode input, PLO= 0dBm, 750MHz ≤fLO≤1200MHz, 50ΩLO and RF system impedance, R1 = 432Ω, R2 = 619Ω, R3 =
332Ω, TC= -40°C to +85°C. Typical values are at VCC= 5V, VBBI= 1.4VP-Pdifferential, VBBQ= 1.4VP-Pdifferential, fIQ= 1MHz,
fLO= 900MHz, TC= +25°C, unless otherwise noted.)
TOTAL SUPPLY CURRENT
vs. TEMPERATURE (TC)
MAX2021 toc01
TEMPERATURE (°C)
TOTAL SUPPLY CURRENT (mA)3510-15
VCC = 4.75V
VCC = 5.0V
VCC = 5.25V
ACLR vs. OUTPUT POWER PER CARRIER
MAX2021 toc02
OUTPUT POWER PER CARRIER (dBm)
ACLR (dB)
SINGLE-CARRIER WCDMA
ADJACENT CHANNEL
ALTERNATE CHANNEL
ACLR vs. OUTPUT POWER PER CARRIER
MAX2021 toc03
OUTPUT POWER PER CARRIER (dBm)
ACLR (dB)
ADJACENT CHANNEL
ALTERNATE CHANNEL
TWO-CARRIER WCDMA
ACLR vs. OUTPUT POWER PER CARRIER
MAX2021 toc04
OUTPUT POWER PER CARRIER (dBm)
ACLR (dB)
FOUR-CARRIER WCDMA
ADJACENT CHANNEL
ALTERNATE CHANNEL
SIDEBAND SUPPRESSION
vs. LO FREQUENCY
MAX2021 toc05
LO FREQUENCY (MHz)
SIDEBAND SUPPRESSION (dBc)
PLO = -3dBmPLO = -6dBm
PLO = 0dBm
PLO = +3dBm
SIDEBAND SUPPRESSION
vs. LO FREQUENCY
MAX2021 toc06
LO FREQUENCY (MHz)
SIDEBAND SUPPRESSION (dBc)
VCC = 4.75V, 5.0V, 5.25V
SIDEBAND SUPPRESSION
vs. LO FREQUENCY
MAX2021 toc07
SIDEBAND SUPPRESSION (dBc)
TC = +25°C
TC = +85°C
TC = -40°C
OUTPUT IP3 vs. LO FREQUENCY
MAX2021 toc08
OUTPUT IP3 (dBm)
TC = -40°C
TC = +85°C
TC = +25°C
PLO = 0dBm, VCC = 5.0V
OUTPUT IP3 vs. LO FREQUENCY
MAX2021 toc09
OUTPUT IP3 (dBm)
VCC = 5.25V
VCC = 5.0V
VCC = 4.75V
TC = +25°C
MODULATOR
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
OUTPUT IP3 vs. LO FREQUENCY
MAX2021 toc10
LO FREQUENCY (MHz)
OUTPUT IP3 (dBm)
PLO = +3dBm
PLO = -3dBm
PLO = -6dBm
PLO = 0dBm
TC = +25°C
OUTPUT IP3
vs. COMMON-MODE VOLTAGE
MAX2021 toc11
COMMON-MODE VOLTAGE (V)
OUTPUT IP3 (dBm)
fLO = 900MHz, PLO = 0dBm
OUTPUT IP3
vs. COMMON-MODE VOLTAGE
MAX2021 toc12
COMMON-MODE VOLTAGE (V)
OUTPUT IP3 (dBm)
fLO = 1000MHz
OUTPUT IP2 vs. LO FREQUENCY
MAX2021 toc13
LO FREQUENCY (MHz)
OUTPUT IP2 (dBm)
TC = +25°C
TC = -40°C
TC = +85°C
OUTPUT IP2 vs. LO FREQUENCY
MAX2021 toc14
LO FREQUENCY (MHz)
OUTPUT IP2 (dBm)
VCC = 5.0V
VCC = 5.25V
VCC = 4.75V
OUTPUT IP2 vs. LO FREQUENCY
MAX2021 toc15
LO FREQUENCY (MHz)
OUTPUT IP2 (dBm)
PLO = +3dBm
PLO = -6dBm
PLO = -3dBm
PLO = 0dBm
OUTPUT IP2
vs. COMMON-MODE VOLTAGE
MAX2021 toc16
OUTPUT IP2 (dBm)
fLO = 900MHz
OUTPUT IP2
vs. COMMON-MODE VOLTAGE
MAX2021 toc17
OUTPUT IP2 (dBm)
fLO = 1000MHz
MODULATOR OUTPUT POWER
vs. INPUT POWER
MAX2021 toc18
OUTPUT POWER (dBm)1625221328
INPUT SPLIT BETWEEN I AND Q,
fIF = 25MHz, fLO = 900MHz
VCC = 4.75V, 5.0V, 5.25V
Typical Operating Characteristics (continued)
(MAX2021 Typical Application Circuit, VCC= 4.75V to 5.25V, GND = 0V, I/Q differential inputs driven from a 100ΩDC-coupled source,
0V common-mode input, PLO= 0dBm, 750MHz ≤fLO≤1200MHz, 50ΩLO and RF system impedance, R1 = 432Ω, R2 = 619Ω, R3 =
332Ω, TC= -40°C to +85°C. Typical values are at VCC= 5V, VBBI= 1.4VP-Pdifferential, VBBQ= 1.4VP-Pdifferential, fIQ= 1MHz,
fLO= 900MHz, TC= +25°C, unless otherwise noted.)MODULATOR
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
MODULATOR OUTPUT POWER
vs. INPUT POWER
MAX2021 toc19
INPUT POWER (dBm)
OUTPUT POWER (dBm)1625221328
INPUT SPLIT BETWEEN I AND Q,
fIF = 25MHz, fLO = 900MHz
PLO = -6dBm, -3dBm, 0dBm, +3dBm
MODULATOR OUTPUT POWER
vs. LO FREQUENCY
MAX2021 toc20
LO FREQUENCY (MHz)
OUTPUT POWER (dBm)
TC = -40°C
TC = +85°CTC = +25°C
VBBI = VBBQ = 1.4VP-P
DIFFERENTIAL
LO LEAKAGE vs. LO FREQUENCY
MAX2021 toc21
LO FREQUENCY (MHz)
LO LEAKAGE (dBm)
PRF = -40dBm
PRF = -7dBm
PRF = -1dBm
LO LEAKAGE NULLED AT PRF = -1dBm
PRF = +5dBm
LO LEAKAGE vs. LO FREQUENCY
MAX2021 toc22
LO FREQUENCY (MHz)
LO LEAKAGE (dBm)
TC = -40°C
TC = +85°C
TC = +25°C
PRF = -1dBm, LO LEAKAGE NULLED AT TC = +25°C
LO LEAKAGE vs. LO FREQUENCY
MAX2021 toc23
LO FREQUENCY (MHz)
LO LEAKAGE (dBm)
PLO = -6dBm
PLO = +3dBm
PLO = -3dBm
PLO = 0dBm
PRF = -1dBm, LO LEAKAGE NULLED AT PLO = 0dBm
OUTPUT NOISE vs. OUTPUT POWER
MAX2021 toc24
OUTPUT POWER (dBm)
OUTPUT NOISE (dBm/Hz)50-5-10
TC = +25°C, fLO = 900MHz
PLO = -6dBm
PLO = -3dBm
PLO = 0dBm
PLO = +3dBm
OUTPUT NOISE vs. OUTPUT POWER
MAX2021 toc25
OUTPUT NOISE (dBm/Hz)
PLO = 0dBm, fLO = 900MHz
TC = +85°C
TC = -40°C
TC = +25°C
Typical Operating Characteristics (continued)
(MAX2021 Typical Application Circuit, VCC= 4.75V to 5.25V, GND = 0V, I/Q differential inputs driven from a 100ΩDC-coupled source,
0V common-mode input, PLO= 0dBm, 750MHz ≤fLO≤1200MHz, 50ΩLO and RF system impedance, R1 = 432Ω, R2 = 619Ω, R3 =
332Ω, TC= -40°C to +85°C. Typical values are at VCC= 5V, VBBI= 1.4VP-Pdifferential, VBBQ= 1.4VP-Pdifferential, fIQ= 1MHz,
fLO= 900MHz, TC= +25°C, unless otherwise noted.)MODULATOR
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
DEMODULATOR CONVERSION LOSS
vs. LO FREQUENCY
MAX2021 toc26
LO FREQUENCY (MHz)
DEMODULATOR CONVERSION LOSS (dB)
PLO = 0dBm, VCC = 5.0V
TC = +85°C
TC = +25°C
TC = -40°C
DEMODULATOR INPUT IP3
vs. LO FREQUENCY
MAX2021 toc27
LO FREQUENCY (MHz)
DEMODULATOR INPUT IP3 (dBm)
PLO = 0dBm, TC = +25°C
VCC = 4.75V
VCC = 5.25V
VCC = 5.0V
DEMODULATOR INPUT IP3
vs. LO FREQUENCY
MAX2021 toc28
LO FREQUENCY (MHz)
DEMODULATOR INPUT IP3 (dBm)
PLO = 0dBm, VCC = 5.0V
TC = +85°C
TC = +25°C
TC = -40°C
DEMODULATOR INPUT IP2
vs. LO FREQUENCY
MAX2021 toc29
LO FREQUENCY (MHz)
DEMODULATOR INPUT IP2 (dBm)
TC = -40°C
TC = +85°C
TC = +25°C
PLO = 0dBm, VCC = 5.0V
DEMODULATOR PHASE IMBALANCE
vs. LO FREQUENCY
MAX2021 toc30
DEMODULATOR PHASE IMBALANCE (deg)-8
LO FREQUENCY (MHz)
PLO = -3dBm
PLO = 0dBm
PLO = +3dBm
PLO = -6dBm
MAX2021 toc31
DEMODULATOR AMPLITUDE IMBALANCE
vs. LO FREQUENCY
DEMODULATOR AMPLITUDE IMBALANCE (dB)
LO FREQUENCY (MHz)
PLO = -6dBm, -3dBm, 0dBm, +3dBm
Typical Operating Characteristics
(MAX2021 Typical Application Circuit, VCC= 4.75V to 5.25V, GND = 0V, I/Q outputs are recombined using network shown in Figure 5.
Losses of combining network not included in measurements.PRF= 5dBm, PLO= 0dBm, 750MHz ≤fLO≤1200MHz, 50ΩLO and RF sys-
tem impedance, R1 = 432Ω, R2 = 619Ω, R3 = 332Ω, TC= -40°C to +85°C. Typical values are at VCC= 5V, fLO= 900MHz, TC= +25°C,
unless otherwise noted.)
LO PORT RETURN LOSS
vs. LO FREQUENCY
MAX2021 toc32
LO PORT RETURN LOSS (dB)
+10
+15
+20
+25
PLO = -6dBm, -3dBm
PLO = +3dBm
PLO = 0dBm
RF PORT RETURN LOSS
vs.LO FREQUENCY
MAX2021 toc33
RF PORT RETURN LOSS (dB)
+40
+35
+30
+25
+20
+15
+10
+45
PLO = -6dBm, -3dBm, 0dBm, +3dBm
IF FLATNESS
vs. BASEBAND FREQUENCY
MAX2021 toc34
IF OUTPUT POWER (dBm)601020304050
fLO = 1000MHz
fLO = 900MHz
PLO = 0dBm
DEMODULATOR (VARIABLE LO)
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
CONVERSION LOSS vs. RF FREQUENCY
MAX2021 toc35
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
fLO = 965MHz
I/Q GAIN MISMATCH vs. IF FREQUENCY
MAX2021 toc36
IF FREQUENCY (MHz)
GAIN MISMATCH (dB)
fLO = 965MHz
I/Q PHASE MISMATCH vs. IF FREQUENCY
MAX2021 toc37
IF FREQUENCY (MHz)
PHASE MISMATCH (DEG)
fLO = 965MHz
INPUT IP3 vs. RF FREQUENCY
MAX2021 toc38
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
PRF = 0dBm/TONE
fLO = 965MHz
1MHz TONE DELTA
45MHz TONE DELTA
INPUT IP2 vs. RF FREQUENCY
MAX2021 toc39
RF FREQUENCY (MHz)
INPUT IP2 (dBm)
1MHz TONE DELTA
45MHz TONE DELTA
PRF = 0dBm/TONE
fLO = 965MHz
Typical Operating Characteristics
(MAX2021 Typical Application Circuit, VCC= 5.0V, GND = 0V, I/Q outputs are recombined using network shown in Figure 5. Losses of
combining network not included in measurements.PRF= 0dBm, PLO= 0dBm, fLO= 965MHz, fIF= fLO- fRF, 50ΩLO and RF system
impedance, R1 = 432Ω, R2 = 619Ω, R3 = 332Ω, TA= +25°C, unless otherwise noted.)
DEMODULATOR (FIXED LO)

Partno	Mfg	Dc	Qty	Available	Descript
MAX2021ETX+ \|MAX2021ETX	MAXIM	N/a	94	avai	High-Dynamic-Range, Direct Up-/Downconversion 650MHz to 1200MHz Quadrature Mod/Demod
MAX2021ETX+T \|MAX2021ETXT	MAXIM	N/a	1513	avai	High-Dynamic-Range, Direct Up-/Downconversion 650MHz to 1200MHz Quadrature Mod/Demod