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| 型号： | MAX1473EUI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC RCV ASK 315MHZ/433MHZ 28TSSOP |
| 其它有关文件： | Automotive Product Guide |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 频率： | 300MHz ~ 450MHz |
| 灵敏度： | -114dBm |
| 数据传输率 - 最大： | 100 kbps |
| 调制或协议： | ASK |
| 应用： | RKE，遥测，安全技术 |
| 电流 - 接收： | 5.8mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 特点： | 配有 RSSI |
| 电源电压： | 3.3V，5V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 带卷 (TR) |
EVALUATION KIT AVAILABLE
AVAILAB
LE
MAX1473
315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
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
Features
o Optimized for 315MHz or 433MHz ISM Band
o Operates from Single 3.3V or 5.0V Supplies
o High Dynamic Range with On-Chip AGC
o Selectable Image-Rejection Center Frequency
o Selectable x64 or x32 f LO /f XTAL Ratio
o Low 5.2mA Operating Supply Current
o < 2.5 μ A Low-Current Power-Down Mode for
Efficient Power Cycling
o 250 μ s Startup Time
o Built-In 50dB RF Image Rejection
o Receive Sensitivity of -114dBm
Ordering Information
thin QFN packages. Both versions are specified for the
extended (-40°C to +85°C) temperature range.
PART
MAX1473EUI+
TEMP RANGE
-40 ° C to +85 ° C
PIN-PACKAGE
28 TSSOP
Applications
MAX1473ETJ+ -40 ° C to +85 ° C 32 Thin QFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
Automotive Remote Keyless Entry
Garage Door Openers
Remote Controls
Wireless Sensors
Security Systems
Home Automation
Local Telemetry
Systems
*EP = Exposed pad.
Functional Diagram and Typical Application Circuit appear
at end of data sheet.
Pin Configurations
Functional Diagrams
TOP VIEW
XTAL1 1
AVDD 2
+
28 XTAL2
27 PWRDN
LNAIN 3
26 PDOUT
+
LNASRC 4
25 DATAOUT
N.C.
1
24
DATAOUT
AGND 5
LNAOUT 6
AVDD 7
MAX1473
24 V DD5
23 DSP
22 DFFB
AGND
LNAOUT
AVDD
2
3
4
23
22
21
V DD5
DSP
N.C.
MIXIN1 8
MIXIN2 9
AGND 10
IRSEL 11
21 OPP
20 DSN
19 DFO
18 IFIN2
MIXIN1
MIXIN2
AGND
IRSEL
5
6
7
8
MAX1473
20
19
18
17
DFFB
OPP
DSN
DFO
MIXOUT 12
DGND 13
17 IFIN1
16 XTALSEL
Pin Configurations appear at end of data sheet.
DVDD 14 15 AGCDIS
TSSOP
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
THIN QFN
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim integrated .com.
19-2748; Rev 6; 1/12
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