MAX1473ETJ+-MAX1473ETJ+T-MAX1473EUI+-MAX1473EUI+T-MAX1473EUI-T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX1473ETJ+T ,315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic RangeEVALUATION KIT AVAILABLEMAX1473315MHz/433MHz ASK SuperheterodyneReceiver with Extended Dynamic Range
MAX1473EUI ,315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic RangeApplicationsMAX1473ETJ -40°C to +85°C 32 Thin QFNAutomotive Remote Keyless Entry Security SystemsGa ..
MAX1473EUI+ ,315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic RangeELECTRICAL CHARACTERISTICS (3.3V OPERATION)(Typical Application Circuit, V = 3.0V to 3.6V, no RF si ..
MAX1473EUI+T ,315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic RangeApplications+Denotes a lead(Pb)-free/RoHS-compliant package.Automotive Remote Keyless Entry Securit ..
MAX1473EUI+T ,315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic RangeELECTRICAL CHARACTERISTICS (5.0V OPERATION)(Typical Application Circuit, V = 4.5V to 5.5V, no RF si ..
MAX1473EUI-T ,315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic RangeApplications+Denotes a lead(Pb)-free/RoHS-compliant package.Automotive Remote Keyless Entry Securit ..
MAX4053ACSE+ ,Low-Voltage, CMOS Analog Multiplexers/SwitchesELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, T = T to T , unl ..
MAX4053AEEE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesFeaturesThe MAX4051/MAX4052/MAX4053 and MAX4051A/' Pin Compatible with Industry-Standard MAX4052A/M ..
MAX4053AEEE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesFeaturesThe MAX4051/MAX4052/MAX4053 and MAX4051A/' Pin Compatible with Industry-Standard MAX4052A/M ..
MAX4053AEEE+ ,Low-Voltage, CMOS Analog Multiplexers/SwitchesMAX4051/A, MAX4052/A, MAX4053/A19-0463; Rev 2; 10/05Low-Voltage, CMOS AnalogMultiplexers/Switches
MAX4053AEPE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesApplications' Low Distortion: < 0.04% (600Ω)Battery-Operated Equipment' Low Crosstalk: < -90dB (50Ω ..
MAX4053AESE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesFeaturesThe MAX4051/MAX4052/MAX4053 and MAX4051A/' Pin Compatible with Industry-Standard MAX4052A/M ..

MAX1473ETJ+-MAX1473ETJ+T-MAX1473EUI+-MAX1473EUI+T-MAX1473EUI-T
315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range
AVAILABLE
EVALUATION KIT AVAILABLE
General Description
The MAX1473 fully integrated low-power CMOS super-
heterodyne receiver is ideal for receiving amplitude-
shift-keyed (ASK) data in the 300MHz to 450MHz
frequency range. Its signal range is from -114dBm to
0dBm. With few external components and a low-current
power-down mode, it is ideal for cost- and power-sensi-
tive applications typical in the automotive and consumer
markets. The chip consists of a low-noise amplifier
(LNA), a fully differential image-rejection mixer, an on-
chip phase-locked-loop (PLL) with integrated voltage-
controlled oscillator (VCO), a 10.7MHz IF limiting
amplifier stage with received-signal-strength indicator
(RSSI), and analog baseband data-recovery circuitry.
The MAX1473 also has a discrete one-step automatic
gain control (AGC) that drops the LNA gain by 35dB
when the RF input signal is greater than -57dBm.
The MAX1473 is available in 28-pin TSSOP and 32-pin
thin QFN packages. Both versions are specified for the
extended (-40°C to +85°C) temperature range.
Applications
Automotive Remote Keyless Entry Security Systems
Garage Door OpenersHome Automation
Remote ControlsLocal Telemetry
Wireless SensorsSystems
FeaturesOptimized for 315MHz or 433MHz ISM BandOperates from Single 3.3V or 5.0V SuppliesHigh Dynamic Range with On-Chip AGCSelectable Image-Rejection Center FrequencySelectable x64 or x32 fLO/fXTALRatioLow 5.2mA Operating Supply Current< 2.5µA Low-Current Power-Down Mode for
Efficient Power Cycling250µs Startup TimeBuilt-In 50dB RF Image RejectionReceive Sensitivity of -114dBm
315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
XTAL2
PWRDN
PDOUT
DATAOUT
VDD5
DSP
AGCDIS
DFFB
OPP
DSN
DFO
IFIN2
IFIN1
XTALSEL
DVDD
DGND
MIXOUT
IRSEL
AGND
MIXIN2
MIXIN1
AVDD
LNAOUT
AGND
LNASRC
LNAIN
AVDD
XTAL1
TSSOP
TOP VIEW
MAX1473313029282726
LNASRCLNAINAVDDXTAL1XTAL2PWRDNPDOUT
N.C.1112131415
MIXOUT
DGND
DVDD
AGCDIS
N.C.
XTALSEL
IFIN1
IFIN2
DFO
DSN
OPP
DFFB
N.C.
DSP
VDD5
IRSEL
AGND
MIXIN2
MIXIN1
AVDD
LNAOUT
AGND
MAX1473N.C.24DATAOUT
PARTTEMP RANGEPIN-PACKAGE
MAX1473EUI+-40°C to +85°C28 TSSOP
MAX1473ETJ+-40°C to +85°C32 Thin QFN-EP*
Pin Configurations
Ordering Information
Functional Diagram and Typical Application Circuit appear
at end of data sheet.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
MAX1473
315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS (3.3V OPERATION)
(Typical Application Circuit, VDD= 3.0V to 3.6V, no RF signal applied, TA= -40°C to +85°C, unless otherwise noted. Typical values
are at VDD= 3.3V and TA= +25°C.) (Note 1)
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.
VDD5to AGND.......................................................-0.3V to +6.0V
AVDD to AGND.....................................................-0.3V to +4.0V
DVDD to DGND.....................................................-0.3V to +4.0V
AGND to DGND.....................................................-0.1V to +0.1V
IRSEL, DATAOUT, XTALSEL, AGCDIS,
PWRDNto AGND.....................................-0.3V to (VDD5+ 0.3V)
All Other Pins to AGND..............................-0.3V to (VDD+ 0.3V)
Continuous Power Dissipation (TA= +70°C)
28-Pin TSSOP (derate 12.8mW/°C above +70°C).1025.6mW
32-Pin Thin QFN (derate 21.3mW/°C
above +70°C).........................................................1702.1mW
Operating Temperature Ranges
MAX1473E__..................................................-40°C to +85°C
Storage Temperature Range.............................-60°C to +150°C
Lead Temperature (soldering 10s)..................................+300°C
Soldering Temperature (reflow).......................................+260°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Supply VoltageVDD3.3V nominal supply3.03.33.6V
fRF = 315MHz5.26.23Supply CurrentIDDV P WRDN = VDDfRF = 433MHz5.86.88mA
fRF = 315MHz1.6Shutdown Supply CurrentIPWRDNV P WRDN = 0V,
VXTALSEL = 0VfRF = 433MHz2.55.3µA
Input Voltage LowVIL0.4V
Input Voltage HighVIHVDD - 0.4V
Input Logic Current HighIIH10µA
fRF = 433MHz, VIRSEL = VDDVDD - 0.4
fRF = 375MHz, VIRSEL = VDD/21.1VDD - 1.5Image Reject Select (Note 2)
fRF = 315MHz, VIRSEL = 0V0.4
DATAOUT Voltage Output LowVOL0.4V
DATAOUT Voltage Output HighVOHRL = 5kΩVDD - 0.4V
MAX1473
315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
DC ELECTRICAL CHARACTERISTICS (5.0V OPERATION)
(Typical Application Circuit, VDD= 4.5V to 5.5V, no RF signal applied, TA= -40°C to +85°C, unless otherwise noted. Typical values
are at VDD= 5.0V and TA= +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Supply VoltageVDD5.0V nominal supply4.55.05.5V
fRF = 315MHz5.26.04Supply CurrentIDDV P WRDN = VDDfRF = 433MHz5.76.76mA
fRF = 315MHz2.3Shutdown Supply CurrentIPWRDNV P WRDN = 0V,
VXTALSEL = 0VfRF = 433MHz2.86.2µA
Input Voltage LowVIL0.4V
Input Voltage HighVIHVDD - 0.4V
Input Logic Current HighIIH10µA
fRF = 433MHz, VIRSEL = VDDVDD - 0.4
fRF = 375MHz, VIRSEL = VDD/21.1VDD - 1.5Image Reject Select (Note 2)
fRF = 315MHz, VIRSEL = 0V0.4
DATAOUT Voltage Output LowVOL0.4V
DATAOUT Voltage Output HighVOHRL = 5kΩVDD - 0.4V
AC ELECTRICAL CHARACTERISTICS
(Typical Application Circuit, VDD= 3.0V to 3.6V, all RF inputs are referenced to 50Ω, fRF= 315MHz, TA= -40°C to +85°C, unless
otherwise noted. Typical values are at VDD= 3.3V and TA= +25°C.) (Note 1).
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
GENERAL CHARACTERISTICS
Startup TimetONTime for valid signal detection afterP WRDN = VOH250µs
Receiver Input FrequencyfRF300450MHz
Maximum Receiver Input LevelPRFIN_MAXModulation depth > 18dB0dBm
Sensitivity (Note 3)PRFIN_MINPeak power level-114dBm
8dBAGC HysteresisLNA gain from low to high150ms
LNA IN HIGH-GAIN MODE
Power Gain16dB
fRF = 433MHz1 - j3.4
fRF = 375MHz1 - j3.9Input Impedance (Note 4)ZIN_LNANormalized to
50Ω
fRF = 315MHz1 - j4.7
1dB Compression PointP1dBLNA-22dBm
Input-Referred 3rd-Order
InterceptIIP3LNA-12dBm
MAX1473
315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit, VDD= 3.0V to 3.6V, all RF inputs are referenced to 50Ω, fRF= 315MHz, TA= -40°C to +85°C, unless
otherwise noted. Typical values are at VDD= 3.3V and TA= +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
LO Signal Feedthrough to
Antenna-80dBm
Noise FigureNFLNA2dB
LNA IN LOW-GAIN MODE
fRF = 433MHz1 - j3.4
fRF = 375MHz1 - j3.9Input Impedance (Note 4)ZIN_LNANormalized to
50Ω
fRF = 315MHz1 - j4.7
1dB Compression PointP1dBLNA-10dBm
Input-Referred 3rd-Order
InterceptIIP3LNA-7dBm
LO Signal Feedthrough to
Antenna-80dBm
Noise FigureNFLNA2dB
Power Gain0dB
Voltage Gain ReductionAGC enabled (depends on tank Q)35dB
MIXER
Input-Referred 3rd-Order
InterceptIIP3MIX-18dBm
Output ImpedanceZOUT_MIX330Ω
Noise FigureNFMIX16dB
fRF = 433MHz, VIRSEL = VDD42
fRF = 375MHz, VIRSEL = VDD/244Image Rejection
(not Including LNA Tank)
fRF = 315MHz, VIRSEL = 0V44
Conversion Gain330Ω IF filter load13dB
INTERMEDIATE FREQUENCY (IF)
Input ImpedanceZIN_IF330Ω
Operating FrequencyfIFBandpass response10.7MHz
3dB Bandwidth20MHz
RSSI Linearity±0.5dB
RSSI Dynamic Range80dB
PRFIN < -120dBm1.15RSSI LevelPRFIN > 0dBm, AGC enabled2.35V
RSSI Gain14.2mV/dB
LNA gain from low to high1.45AGC ThresholdLNA gain from high to low2.05V
MAX1473
315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
Note 1:100% tested at TA= +25°C. Guaranteed by design and characterization over temperature.
Note 2:IRSEL is internally set to 375MHz IR mode. It can be left open when the 375MHz image rejection setting is desired. A 1nF
capacitor is recommended in noisy environments.
Note 3:BER = 2 x 10-3, Manchester encoded, data rate = 4kbps, IF bandwidth = 280kHz.
Note 4:Input impedance is measured at the LNAIN pin. Note that the impedance includes the 15nH inductive degeneration con-
nected from the LNA source to ground. The equivalent input circuit is 50Ωin series with 2.2pF.
Note 5:Crystal oscillator frequency for other RF carrier frequency within the 300MHz to 450MHz range is (fRF- 10.7MHz)/64 for
XTALSEL = 0V, and (fRF- 10.7MHz)/32 for XTALSEL = VDD.
AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit, VDD= 3.0V to 3.6V, all RF inputs are referenced to 50Ω, fRF= 315MHz, TA= -40°C to +85°C, unless
otherwise noted. Typical values are at VDD= 3.3V and TA= +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
DATA FILTER
Maximum BandwidthBWDF100kHz
DATA SLICER
Comparator BandwidthBWCMP100kHz
Output High VoltageVDD5V
Output Low Voltage0V
CRYSTAL OSCILLATOR
VXTALSEL = 0V6.6128fRF = 433MHzVXTALSEL = VDD13.2256MHz
VXTALSEL = 0V4.7547Crystal Frequency (Note 5)fXTAL
fRF = 315MHzVXTALSEL = VDD9.5094MHz
Crystal Tolerance50ppm
Input CapacitanceFrom each pin to ground6.2pF
Recommended Crystal Load
CapacitanceCLOAD3pF
Maximum Crystal Load
CapacitanceCLOAD10pF
MAX1473
315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
Typical Operating Characteristics
(Typical Application Circuit, VDD= 3.3V, fRF= 315MHz, TA= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1473 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
+105°C
+85°C
+25°C
-40°C
SUPPLY CURRENT
vs. RF FREQUENCY
MAX1473 toc02
RF FREQUENCY (MHz)
SUPPLY CURRENT (mA)
+105°C
+25°C
+85°C
-40°C
BIT-ERROR RATE
vs. AVERAGE RF INPUT POWER
AVERAGE INPUT POWER (dBm)
BIT-ERROR RATE (%)
fRF = 433MHz
fRF = 315MHz
SENSITIVITY vs. TEMPERATURE
MAX1473 toc04
TEMPERATURE (°C)
SENSITIVITY (dBm)
PEAK RF INPUT POWER
0.2% BER
IF BANDWIDTH = 280kHz
fRF = 433MHz
fRF = 315MHz
RSSI vs. RF INPUT POWER
MAX1473 toc05
RF INPUT POWER (dBm)
RSSI (V)
IF BANDWIDTH = 280kHz
VAGCDIS = 0V
VAGCDIS = VDD
RSSI AND DELTA
vs. IF INPUT POWER
MAX1473 toc06
IF INPUT POWER (dBm)
RSSI (V)
DELTA (dB)
DELTA
RSSI
SYSTEM GAIN vs. FREQUENCY
MAX1473 toc07
SYSTEM GAIN (dB)2015105
UPPER
SIDEBAND
LOWER
SIDEBAND
FROM RFIN TO
MIXOUT
fRF = 315MHz
50dB IMAGE
REJECTION
IMAGE REJECTION
vs. RF FREQUENCY
MAX1473 toc08
IMAGE REJECTION (dB)
fRF = 433MHz
fRF = 375MHz
fRF = 315MHz
IMAGE REJECTION
vs. TEMPERATURE
MAX1473 toc09
IMAGE REJECTION (dB)3510-15
fRF = 315MHz
fRF = 375MHz
fRF = 433MHz
MAX1473
315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
NORMALIZED IF GAIN
vs. IF FREQUENCY
MAX1473 toc10
IF FREQUENCY (MHz)
NORMALIZED IF GAIN (dB)
S11 MAGNITUDE-LOG PLOT OF RFIN
MAX1473 toc11
RF FREQUENCY (MHz)
MAGNITUDE (dB)
315MHz
-34dB
S11 SMITH PLOT OF RFIN
MAX1473 toc12
600MHz
100MHz
REGULATOR VOLTAGE
vs. REGULATOR CURRENT
MAX1473 toc13
REGULATOR CURRENT (mA)
REGULATOR VOLTAGE (V)2515
+105°C+85°C
-40°C+25°C
VDD = 5.0V
PHASE NOISE
vs. OFFSET FREQUENCY
OFFSET FREQUENCY (MHz)
1.E-051.E-041.E-031.E-021.E-011.E+001.E+01
PHASE NOISE (dBc/Hz)
MAX1473 toc14
fRF = 315MHz
PHASE NOISE
vs. OFFSET FREQUENCY
OFFSET FREQUENCY (MHz)
1.E-051.E-041.E-031.E-021.E-011.E+001.E+01
PHASE NOISE (dBc/Hz)
MAX1473 toc15
fRF = 433MHzypical Operating Characteristics (continued)
(Typical Application Circuit, VDD= 3.3V, fRF= 315MHz, TA= +25°C, unless otherwise noted.)
MAX1473
315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
Pin Description
PIN
TSSOPTQFNNAMEFUNCTION29XTAL11st Crystal Input. (See the Phase-Locked Loop section.)
2, 74, 30AVDD
Positive Analog Supply Voltage. For +5V operation, pin 2 is the output of an on-chip +3.2V
low-dropout regulator and should be bypassed to AGND with a 0.1µF capacitor as close as
possible to the pin. Pin 7 must be externally connected to the supply from pin 2 and bypassed to
AGND with a 0.01µF capacitor as close as possible to the pin (see the Voltage Regulator section
and the Typical Application Circuit).31LNAINLow-Noise Amplifier Input. (See the Low-Noise Amplifier section.)32LNASRCLow-Noise Amplifier Source for External Inductive Degeneration. Connect inductor to ground to set
LNA input impedance. (See the Low-Noise Amplifier section.)2AGNDAnalog Ground3LNAOUTLow-Noise Amplifier Output. Connect to mixer through an LC tank filter. (See the Low-Noise
Amplifier section.)5MIXIN11st Differential Mixer Input. Connect through a 100pF capacitor to VDD3 side of the LC tank.6MIXIN22nd Differential Mixer Input. Connect through a 100pF capacitor to LC tank filter from LNAOUT.7AGNDAnalog Ground8IRSELIm ag e Rej ecti on S el ect P i n. S et V I RS E L = 0V to center i m ag e r ej ecti on at 315M H z. Leave IRS E L
unconnected to center i m ag e r ej ecti on at 375M H z. S et V IRS E L = V D D to center i m ag e r ej ecti on at 433M H z.9MIXOUT330Ω Mixer Output. Connect to the input of the 10.7MHz bandpass filter.10DGNDDigital Ground11DVDDPositive Digital Supply Voltage. Connect to both of the AVDD pins. Bypass to DGND with a 0.01µF
capacitor as close as possible to the pin (see the Typical Application Circuit).12AGCDISAGC Control Pin. Pull high to disable AGC.14XTALSELCrystal Divider Ratio Select Pin. Drive XTALSEL low to select divider ratio of 64, or drive XTALSEL
high to select divider ratio of 32.15IFIN11st Differential Intermediate Frequency Limiter Amplifier Input. Decouple to AGND with a 1500pF
capacitor.16IFIN22nd Differential Intermediate Frequency Limiter Amplifier Input. Connect to the output of a 10.7MHz
bandpass filter.17DFOData Filter Output18DSNNegative Data Slicer Input19OPPNoninverting Op-Amp Input for the Sallen-Key Data Filter20DFFBData Filter Feedback Node. Input for the feedback of the Sallen-Key data filter.22DSPPositive Data Slicer Input23VDD5
+5V Supply Voltage. Bypass to AGND with a 0.01µF capacitor as close as possible to the pin. For
+5V operation, VDD5 is the input to an on-chip voltage regulator whose +3.2V output appears at the
pin 2 AVDD pin. (See the Voltage Regulator section and the Typical Application Circuit.)24DATAOUTDigital Baseband Data Output26PDOUTPeak Detector Output27PWRDNPower-Down Select Input. Drive this pin with a logic high to power on the IC.28XTAL22nd Crystal Input1, 13,
21, 25N.C.No Connection
MAX1473

Partno	Mfg	Dc	Qty	Available	Descript
MAX1473ETJ+ \|MAX1473ETJ	MAXIN	N/a	61	avai	315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range
MAX1473ETJ+T	MAX	N/a	10000	avai	315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range
MAX1473EUI+ \|MAX1473EUI	MAXIM	N/a	1100	avai	315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range
MAX1473EUI+T \|MAX1473EUIT	MAX	N/a	700	avai	315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range
MAX1473EUI+T \|MAX1473EUIT	MAXIM	N/a	2500	avai	315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range
MAX1473EUI-T \|MAX1473EUIT	MAX	N/a	50	avai	315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range