MAX1479ATE+ Fast Delivery |IC PHOENIX CO.,LIMITED

MAX1479ATE+ ,300MHz to 450MHz Low-Power, Crystal-Based +10dBm ASK/FSK TransmitterApplicationsMAX1479ATE+ -40°C to +125°C 16 TQFN-EP*● Remote Keyless Entry+Denotes a lead(Pb)-free/R ..
MAX147BCAP ,+2.7Low-Power, 8-Channel, Serial 12-Bit ADCsApplications+3VPortable Data Logging Data AcquisitionVCH0 V DDDD 0.1μFMedical Instruments Battery- ..
MAX147BCAP+ ,+2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCsELECTRICAL CHARACTERISTICS(V = +2.7V to +3.6V (MAX146); V = +2.7V to +5.25V (MAX147); COM = 0; f = ..
MAX147BCAP+ ,+2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCsMAX146/MAX14719-0465; Rev 2; 10/01+2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX147BCPP ,+2.7Low-Power, 8-Channel, Serial 12-Bit ADCsMAX146/MAX14719-0465; Rev 1; 6/97+2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs_______________
MAX147BCPP+ ,+2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCsMAX146/MAX14719-0465; Rev 2; 10/01+2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX4053CSE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesFeaturesThe MAX4051/MAX4052/MAX4053 and MAX4051A/' Pin Compatible with Industry-Standard MAX4052A/M ..
MAX4053CSE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesGeneral Description ________
MAX4053CSE+ ,Low-Voltage, CMOS Analog Multiplexers/SwitchesMAX4051/A, MAX4052/A, MAX4053/A19-0463; Rev 2; 10/05Low-Voltage, CMOS AnalogMultiplexers/Switches
MAX4053CSE+T ,Low-Voltage, CMOS Analog Multiplexers/SwitchesMAX4051/A, MAX4052/A, MAX4053/A19-0463; Rev 2; 10/05Low-Voltage, CMOS AnalogMultiplexers/Switches
MAX4053EEE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesApplications' Low Distortion: < 0.04% (600Ω)Battery-Operated Equipment' Low Crosstalk: < -90dB (50Ω ..
MAX4053EEE+ ,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 ..

MAX1479ATE+
300MHz to 450MHz Low-Power, Crystal-Based +10dBm ASK/FSK Transmitter
General Description
The MAX1479 crystal-referenced phase-locked-loop
(PLL) VHF/UHF transmitter is designed to transmit ASK,
OOK, and FSK data in the 300MHz to 450MHz frequency
range. The MAX1479 supports data rates up to 100kbps
in ASK mode and 20kbps in FSK mode (both Manchester
coded). The device provides an adjustable output power of more than +10dBm into a 50Ω load. The crystal-based
architecture of the MAX1479 eliminates many of the com-
mon problems of SAW-based transmitters by providing
greater modulation depth, faster frequency settling, higher
tolerance of the transmit frequency, and reduced tem-
perature dependence. These improvements enable better
overall receiver performance when using the MAX1479
together with a superheterodyne receiver such as the
MAX1470, MAX1471, MAX1473, or MAX7033.
The MAX1479 is available in a 16-pin TQFN package
(3mm x 3mm) and is specified for the automotive tem-
perature range from -40°C to +125°C.
Applications●Remote Keyless Entry●Tire Pressure Monitoring●Security Systems●Radio-Controlled Toys●Wireless Game Consoles●Wireless Computer Peripherals●Wireless Sensors●RF Remote Controls●Garage Door Openers
Features●ETSI-Compliant EN300 220●+2.1V to +3.6V Single-Supply Operation●Supports ASK, OOK, and FSK Modulations●Adjustable FSK Shift●+10dBm Output Power into 50Ω Load●Low Supply Current (6.7mA in ASK Mode,
and 10.5mA in FSK Mode)●Uses Small Low-Cost Crystal●Small 16-Pin TQFN Package●Fast-On Oscillator—200μs Startup Time●Programmable Clock Output
Typical Application Circuit appears at end of data sheet.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
PARTTEMP RANGEPIN-PACKAGE
MAX1479ATE+-40°C to +125°C16 TQFN-EP*
MAX1479
ENABLE
DIN
MODE
VDD
CLKOUT
DD_
ROUT
PAOUT
CLK0
CLK1
DEV0
DEV1
DEV2XT
AL1
AL2
GND
CRYSTAL
DRIVER678141516
CLOCK
DIVIDER
DIVIDE
BY 32
LOOP
FILTER
ASK
FSK
ENVELOPE
SHAPING
DEVIATION
PD/CP
VCO151413
CLK0
CLK1
DEV0
DEV1
TOP VIEW
ENABLE
EP*DIN
MODE
VDD678
DD_
CLKOUT
PAOUT
ROUT
MAX1479
GNDXTAL2
XTAL1
DEV2
TQFN
(3mm x 3mm)
*CONNECT EP TO GND.
MAX1479300MHz to 450MHz Low-Power,
Crystal-Based +10dBm ASK/FSK Transmitter
Functional DiagramPin Coniguration
Ordering Information
EVALUATION KIT AVAILABLE
VDD to GND ............................................................-0.3V to +4V
All Other Pins to GND ..............................-0.3V to (VDD + 0.3V)
Continuous Power Dissipation (TA = +70°C)16-Pin TQFN (derate 14.7mW/°C above +70°C) ...1176.5mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(Typical Application Circuit, all RF inputs and outputs are referenced to 50Ω, VDD = 2.1V to 3.6V, VENABLE = VDD. TA = -40°C to
+125°C, unless otherwise noted. Min and Max values are 100% tested at TA = +125°C and are guaranteed by design and character-
ization over temperature, unless otherwise noted. Typical values are at VDD = +2.7V, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Supply VoltageVDD2.13.6V
Supply CurrentIDD
PA off, VDIN at
0% duty cycle
(ASK or FSK)
fRF = 315MHz2.94.3
fRF = 433MHz3.34.8
VDIN at 50%
duty cycle (ASK)
(Notes 2, 3)
fRF = 315MHz6.710.7
fRF = 433MHz7.311.4
VDIN at 100%
duty cycle (FSK)
fRF = 315MHz 10.517.1
fRF = 433MHz (Note 3)11.418.1
Standby CurrentISTDBYVENABLE < VIL
TA = +25°C0.2TA < +85°C (Note 3)120300
TA < +125°C 7001600
DIGITAL INPUTS AND OUTPUTS
Data Input HighVIHVDD -
0.25V
Data Input LowVIL0.25V
Maximum Input CurrentIIN20µA
Output Voltage HighVOHCLKOUT, load = 10kΩ || 10pF (Note 3)VDD -
0.25V
Output Voltage LowVOLCLKOUT, load = 10kΩ || 10pF (Note 3)0.25V
MAX1479300MHz to 450MHz Low-Power,
Crystal-Based +10dBm ASK/FSK Transmitter
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.
DC Electrical Characteristics
(Typical Application Circuit, all RF inputs and outputs are referenced to 50Ω, VDD = 2.1V to 3.6V, VENABLE = VDD. TA = -40°C to
+125°C, unless otherwise noted. Min and Max values are 100% tested at TA = +125°C and are guaranteed by design and character-
ization over temperature, unless otherwise noted. Typical values are at VDD = +2.7V, TA = +25°C, unless otherwise noted.) (Note 1)
Note 1: Supply current, output power, and efficiency are greatly dependent on board layout and PAOUT match.
Note 2: 50% duty cycle at 10kHz ASK data (Manchester coded).
Note 3: Guaranteed by design and characterization, not production tested.
Note 4: VENABLE = VIL to VENABLE = VIH. fOFFSET is defined as the frequency deviation from the desired carrier frequency.
Note 5: Dependent on crystal and PCB trace capacitance.
Note 6: VENABLE > VIH, VDATA > VIH, Efficiency = POUT/(VDD x IDD).
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
SYSTEM PERFORMANCE
Frequency Range fRF300450MHz
Turn-On Time (Note 4)tONSettle to within 50kHz200µsSettle to within 5kHz350
Maximum Data Rate (Note 3)ASK mode (Manchester coded)100kbpsFSK mode (Manchester coded)20
Maximum FSK Frequency
Deviation
DEV[2:0] = 111
(Note 5)
fRF = 315MHz55kHz
fRF = 433MHz80
Output PowerPOUT
TA = +25°C, VDD = +2.7V6.81012.0
dBmTA = +125°C, VDD = +2.1V2.75.3
TA = -40°C, VDD = +3.6V12.216.1
Transmit Eficiency with CW Tone
(Note 6)
fRF = 315MHz35fRF = 433MHz34
Transmit Eficiency at 50% Duty
Cycle
fRF = 315MHz27
fRF = 433MHz25
PHASE-LOCKED-LOOP PERFORMANCE
VCO GainKVCO280MHz/V
Phase Noise
fRF = 315MHz
fOFFSET = 100kHz-75
dBc/Hz
fOFFSET = 1MHz-98
fRF = 433MHz
fOFFSET = 100kHz-74
fOFFSET = 1MHz-98
Maximum Carrier HarmonicsfRF = 315MHz-50dBc
fRF = 433MHz-45
Reference Spur-40dBc
Loop BandwidthBW300kHz
Crystal Frequency RangefXTALFRF/32MHz
Crystal Tolerance50ppm
Crystal Load Capacitance CLOAD(Note 7)4.5pF
Clock Output FrequencyDetermined by CLK0 and CLK1;
see Table 1FXTAL/NMHz
MAX1479300MHz to 450MHz Low-Power,
Crystal-Based +10dBm ASK/FSK Transmitter
AC Electrical Characteristics
(Typical Application Circuit, VDD = +2.7V, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX1479 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
fRF = 315MHz
PA ON
TA = -40°C
TA = +25°C
TA = +125°C
TA = +85°C
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX1479 toc04
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
fRF = 433MHz
PA 50% DUTY CYCLE AT 10kHz
TA = -40°C
TA = +25°C
TA = +125°C
TA = +85°C
SUPPLY CURRENT AND OUTPUT POWER
vs. EXTERNAL RESISTOR
MAX1479 toc07
SUPPLY CURRENT (mA)
OUTPUT POWER (dBm)100110
0.110k
fRF = 315MHz
PA ON
POWER
CURRENT
SUPPLY CURRENT AND OUTPUT POWER
vs. EXTERNAL RESISTOR
MAX1479 toc08
SUPPLY CURRENT (mA)
OUTPUT POWER (dBm)100110
0.110k
fRF = 433MHz
PA ON
POWER
CURRENT
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX1479 toc02
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
fRF = 315MHz
PA 50% DUTY CYCLE AT 10kHz
TA = -40°C
TA = +25°C
TA = +125°C
TA = +85°C
SUPPLY CURRENT vs. OUTPUT POWER
MAX1479 toc05
AVERAGE OUTPUT POWER (dBm)
SUPPLY CURRENT (mA)2-2-6-10
fRF = 315MHz
PA ON
50% DUTY CYCLE
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX1479 toc03
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
fRF = 433MHz
PA ON
TA = -40°C
TA = +25°C
TA = +125°C
TA = +85°C
SUPPLY CURRENT vs. OUTPUT POWER
MAX1479 toc06
AVERAGE OUTPUT POWER (dBm)
SUPPLY CURRENT (mA)2-2-6-10
fRF = 433MHz
PA ON
50% DUTY CYCLE
MAX1479300MHz to 450MHz Low-Power,
Crystal-Based +10dBm ASK/FSK Transmitter
Typical Operating Characteristics
(Typical Application Circuit, VDD = +2.7V, TA = +25°C, unless otherwise noted.)
OUTPUT POWER vs. SUPPLY VOLTAGE
MAX1479 toc09
SUPPLY VOLTAGE (V)
OUTPUT POWER (dBm)
fRF = 315MHz
PA ON
TA = +25°C
TA = +125°C
TA = +85°C
TA = -40°C
CLOCK SPUR MAGNITUDE
vs. SUPPLY VOLTAGE
MAX1479 toc14
CLKOUT SPUR MAGNITUDE (dBc)
fRF = 315MHz
CLKOUT SPUR = fRF ±fCLKOUT
10pF LOAD CAPACITANCE
fCLKOUT = fXTAL/16
fCLKOUT = fXTAL/4
fCLKOUT = fXTAL/8
OUTPUT POWER vs. SUPPLY VOLTAGE
MAX1479 toc12
SUPPLY VOLTAGE (V)
OUTPUT POWER (dBm)
fRF = 433MHz
PA ON
ENVELOPE SHAPING
DISABLED
TA = +25C
TA = +125°C
TA = +85°C
TA = -40°C
FREQUENCY STABILITY
vs. SUPPLY VOLTAGE
MAX1479 toc15
FREQUENCY STABILITY (ppm)
fRF = 315MHz
fRF = 433MHz
PHASE NOISE vs. OFFSET FREQUENCY
MAX1479 toc13
OFFSET FREQUENCY (Hz)
PHASE NOISE (dBc/Hz)100k10k1k
10010M
fRF = 315MHz
fRF = 433MHz
OUTPUT POWER vs. SUPPLY VOLTAGE
MAX1479 toc10
SUPPLY VOLTAGE (V)
OUTPUT POWER (dBm)
fRF = 433MHz
PA ON
TA = +25°C
TA = +125°C
TA = +85°C
TA = -40°C
OUTPUT POWER vs. SUPPLY VOLTAGE
MAX1479 toc11
SUPPLY VOLTAGE (V)
OUTPUT POWER (dBm)
fRF = 315MHz
PA ON
ENVELOPE SHAPING
DISABLED
TA = +25°C
TA = +125°C
TA = +85°C
TA = -40°C
MAX1479300MHz to 450MHz Low-Power,
Crystal-Based +10dBm ASK/FSK Transmitter
Typical Operating Characteristics (continued)
Detailed Description
The MAX1479 is a highly integrated ASK/FSK transmitter
operating over the 300MHz to 450MHz frequency band.
The device requires only a few external components to
complete a transmitter solution. The MAX1479 includes a
complete PLL and a highly efficient power amplifier. The
device can be set into a 0.2nA low-power shutdown mode.
Shutdown Mode
ENABLE (pin 4) is internally pulled down with a 20μA
current source. If it is left unconnected or pulled low, the
MAX1479 goes into a low-power shutdown mode. In this
mode, the supply current drops to 0.2nA. When ENABLE
is high, the device is enabled and is ready for transmis-sion after 200μs (frequency settles to within 50kHz).
The 200μs turn-on time of the MAX1479 is mostly
dominated by the crystal oscillator startup time. Once the
oscillator is running, the 300kHz PLL bandwidth allows
fast frequency recovery during power-amplifier toggling.
Mode Selection
MODE (pin 2) sets the MAX1479 in either ASK or FSK
mode. When MODE is set low, the device operates as
an ASK transmitter. If MODE is set high, the device oper-
ates as an FSK transmitter. In the ASK mode, the DIN pin
controls the output of the power amplifier. A logic low on
DIN turns off the PA, and a logic high turns on the PA. In
the FSK mode, a logic low on the DIN pin is represented
by the low FSK frequency, and a logic-high input is rep-
resented by the high FSK frequency. (The ASK carrier
frequency and the lower FSK frequency are the same.)
The deviation is proportional to the crystal load imped-
ance and pulling capacitance. The maximum frequency
deviation is 55kHz for fRF = 315MHz and 80kHz for
fRF = 433MHz.
PINNAMEDESCRIPTIONVDDSupply Voltage. Bypass to GND with a 10nF and 220pF capacitor as close to the pin as possible.MODEMode Select. A logic low on MODE enables the device in ASK mode. A logic high on MODE enables the
device in FSK mode.DINData Input. Power ampliier is on when DIN is high in ASK mode. Frequency is high when DIN is high in
FSK mode.ENABLEStandby/Power-Up Input. A logic low on ENABLE sets the device in standby mode.CLKOUTBuffered Clock Output. Programmable through CLK0 and CLK1. See Table 1.VDD_PAPower-Ampliier Supply Voltage. Bypass to GND with a 10nF and 220pF capacitor as close to the pin as
possible.ROUTEnvelope-Shaping Output. ROUT controls the power-ampliier envelope rise and fall. Bypass to GND with
a 680pF and 220pF capacitor as close to the pin as possible.PAOUTPower-Ampliier Output. Requires a pullup inductor to the supply voltage, which can be part of the output-
matching network to an antenna.CLK01st Clock Divider Setting. See Table 1.CLK12nd Clock Divider Setting. See Table 1.DEV01st FSK Frequency-Deviation Setting. See Table 2.DEV12nd FSK Frequency-Deviation Setting. See Table 2.DEV23rd FSK Frequency-Deviation Setting. See Table 2.XTAL11st Crystal Input. fRF = 32 x fXTAL.XTAL22nd Crystal Input. fRF = 32 x fXTAL.GNDGround. Connect to system ground.EPExposed Ground Pad. EP is the power ampliier’s ground. It must be connected to PCB through a low-
inductance path.
MAX1479300MHz to 450MHz Low-Power,
Crystal-Based +10dBm ASK/FSK Transmitter
Pin Description

Partno	Mfg	Dc	Qty	Available	Descript
MAX1479ATE+ \|MAX1479ATE	MAXIM	N/a	200	avai	300MHz to 450MHz Low-Power, Crystal-Based +10dBm ASK/FSK Transmitter