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MAX1471 PDF даташит

Спецификация MAX1471 изготовлена ​​​​«Maxim Integrated Products» и имеет функцию, называемую «3V/5V ASK/FSK Superheterodyne Receiver».

Детали детали

Номер произв MAX1471
Описание 3V/5V ASK/FSK Superheterodyne Receiver
Производители Maxim Integrated Products
логотип Maxim Integrated Products логотип 

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MAX1471 Даташит, Описание, Даташиты
www.DataSheet4U.com
19-3272; Rev 1; 3/05
315MHz/434MHz Low-Power, 3V/5V
ASK/FSK Superheterodyne Receiver
General Description
The MAX1471 low-power, CMOS, superheterodyne, RF
dual-channel receiver is designed to receive both ampli-
tude-shift-keyed (ASK) and frequency-shift-keyed (FSK)
data without reconfiguring the device or introducing any
time delay normally associated with changing modula-
tion schemes. The MAX1471 requires few external com-
ponents to realize a complete wireless RF digital data
receiver for the 300MHz to 450MHz ISM bands.
The MAX1471 includes all the active components
required in a superheterodyne receiver including: a low-
noise amplifier (LNA), an image-reject (IR) mixer, a fully
integrated phase-locked loop (PLL), local oscillator
(LO), 10.7MHz IF limiting amplifier with received-signal-
strength indicator (RSSI), low-noise FM demodulator,
and a 3V voltage regulator. Differential peak-detecting
data demodulators are included for both the FSK and
ASK analog baseband data recovery. The MAX1471
includes a discontinuous receive (DRX) mode for low-
power operation, which is configured through a serial
interface bus.
The MAX1471 is available in a 32-pin thin QFN package
and is specified over the automotive -40°C to +125°C
temperature range.
Applications
Automotive Remote Keyless Entry (RKE)
Tire Pressure Monitoring Systems
Garage Door Openers
Wireless Sensors
Wireless Keys
Security Systems
Medical Systems
Home Automation
Local Telemetry Systems
Features
ASK and FSK Demodulated Data on Separate
Outputs
Specified over Automotive -40°C to +125°C
Temperature Range
Low Operating Supply Voltage Down to 2.4V
On-Chip 3V Regulator for 5V Operation
Low Operating Supply Current
7mA Continuous Receive Mode
1.1µA Deep-Sleep Mode
Discontinuous Receive (DRX) Low-Power
Management
Fast-On Startup Feature < 250µs
Integrated PLL, VCO, and Loop Filter
45dB Integrated Image Rejection
RF Input Sensitivity*
ASK: -114dBm
FSK: -108dBm
Selectable IF BW with External Filter
Programmable Through Serial User Interface
RSSI Output and High Dynamic Range with AGC
*0.2% BER, 4kbps, Manchester-encoded data, 280kHz IF BW
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX1471ATJ
-40°C to +125°C 32 Thin QFN-EP**
**EP = Exposed pad.
Pin Configuration
TOP VIEW
32 31 30 29 28 27 26 25
DSA- 1
DSA+ 2
OPA+ 3
DFA 4
XTAL2 5
XTAL1 6
AVDD 7
LNAIN 8
MAX1471
24 DVDD
23 DGND
22 DFF
21 OPF+
20 DSF+
19 DSF-
18 PDMAXF
17 PDMINF
9 10 11 12 13 14 15 16
THIN QFN
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.









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MAX1471 Даташит, Описание, Даташиты
www.DataSheet4U.com
315MHz/434MHz Low-Power, 3V/5V
ASK/FSK Superheterodyne Receiver
ABSOLUTE MAXIMUM RATINGS
High-Voltage Supply, HVIN to DGND .......................-0.3V, +6.0V
Low-Voltage Supply, AVDD and DVDD to AGND .....-0.3V, +4.0V
SCLK, DIO, CS, ADATA,
FDATA ....................................(DGND - 0.3V) to (HVIN + 0.3V)
All Other Pins.............................(AGND - 0.3V) to (AVDD + 0.3V)
Continuous Power Dissipation (TA = +70°C)
32-Pin Thin QFN (derate 21.3mW/°C above +70°C) ...1702mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C
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, AVDD = DVDD = HVIN = +2.4V to +3.6V, fRF = 300MHz to 450MHz, TA = -40°C to +125°C, unless otherwise
noted. Typical values are at AVDD = DVDD = HVIN = +3.0V, fRF = 434 MHz, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
GENERAL CHARACTERISTICS
CONDITIONS
MIN TYP MAX UNITS
Supply Voltage (5V)
HVIN
AVDD and DVDD unconnected from HVIN,
but connected together
4.5 5.0 5.5
V
Supply Voltage (3V)
VDD
HVIN, AVDD, and DVDD connected to power
supply
2.4
3.0
3.6
Operating
7.0 8.4
V
mA
TA < +85°C
Polling duty cycle: 10%
duty cycle
DRX mode OFF current
Deep-sleep current
Operating
705 855
5.0 14.2
1.1 7.1
8.5
µA
mA
Supply Current
IDD
TA < +105°C
(Note 2)
Polling duty cycle: 10%
duty cycle
DRX mode OFF current
Deep-sleep current
Operating
865
µA
15.5
13.4
8.6 mA
TA < +125°C
(Note 2)
Polling duty cycle: 10%
duty cycle
DRX mode OFF current
Deep-sleep current
900
µA
44.1
36.4
Startup Time
tON
DIGITAL OUTPUTS (DIO, ADATA, FDATA)
Time for final signal detection, does not
include baseband filter settling (Note 2)
200 250
µs
Output High Voltage
VOH
ISOURCE = 250µA (Note 2)
HVIN -
0.15
V
Output Low Voltage
DIGITAL INPUTS (CS, DIO, SCLK)
VOL
ISINK = 250µA (Note 2)
0.15 V
Input High Threshold
VIH
0.9 x
HVIN
V
Input Low Threshold
VIL
.
0.1 x
HVIN
V
2 _______________________________________________________________________________________









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MAX1471 Даташит, Описание, Даташиты
www.DataSheet4U.com
315MHz/434MHz Low-Power, 3V/5V
ASK/FSK Superheterodyne Receiver
DC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit, AVDD = DVDD = HVIN = +2.4V to +3.6V, fRF = 300MHz to 450MHz, TA = -40°C to +125°C, unless otherwise
noted. Typical values are at AVDD = DVDD = HVIN = +3.0V, fRF = 434 MHz, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input-High Leakage Current
Input-Low Leakage Current
Input Capacitance
IIH (Note 2)
IIL (Note 2)
CIN (Note 2)
-20 µA
20 µA
2.0 pF
VOLTAGE REGULATOR
Output Voltage
VREG HVIN = 5.0V, ILOAD = 7.0mA
3.0 V
AC ELECTRICAL CHARACTERISTICS
(Typical Application Circuit, AVDD = DVDD = HVIN = +2.4V to +3.6V, fRF = 300MHz to 450MHz, TA = -40°C to +125°C, unless otherwise
noted. Typical values are at AVDD = DVDD = HVIN = +3.0V, fRF = 434 MHz, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
GENERAL CHARACTERISTICS
CONDITIONS
MIN TYP MAX UNITS
Receiver Sensitivity
RFIN
0.2% BER, 4kbps
ASK
Manchester Code, 280kHz
IF BW, 50
FSK
-114
-108
dBm
Maximum Receiver Input Power
Level
Receiver Input Frequency Range
Receiver Image Rejection
LNA/MIXER (Note 4)
LNA Input Impedance
Voltage Conversion Gain (High-
Gain Mode)
RFMAX
fRF
IR
(Note 3)
Z11 Normalized to 50
0 dBm
300 450 MHz
45 dB
fRF = 315MHz
fRF = 434MHz
1 - j4.7
1 - j3.4
47.5
dB
Input-Referred 3rd-Order
Intercept Point (High-Gain Mode)
-38 dBm
Voltage Conversion Gain (Low-
Gain Mode)
12.2 dB
Input-Referred 3rd-Order
Intercept Point (Low-Gain Mode)
-5 dBm
LO Signal Feedthrough to
Antenna
Mixer Output Impedance
IF
Input Impedance
Operating Frequency
3dB Bandwidth
FM DEMODULATOR
Demodulator Gain
ZOUT
Z11
fIF
GFM
-90
330
330
10.7
10
2.2
dBm
MHz
MHz
mV/kHz
_______________________________________________________________________________________ 3










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