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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 50?load. The
crystal-based architecture of the MAX1479 eliminates
many of the common problems of SAW-based transmit-
ters by providing greater modulation depth, faster fre-
quency settling, higher tolerance of the transmit
frequency, and reduced temperature dependence.
These improvements enable better overall receiver per-
formance 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癈 to +125癈.
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
o ETSI-Compliant EN300 220
o +2.1V to +3.6V Single-Supply Operation
o Supports ASK, OOK, and FSK Modulations
o Adjustable FSK Shift
o +10dBm Output Power into 50?SPAN class="pst MAX1479ATE-T_2171866_2"> Load
o Low Supply Current (6.7mA in ASK Mode, 
and 10.5mA in FSK Mode)
o Uses Small Low-Cost Crystal
o Small 16-Pin TQFN Package
o Fast-On Oscillator200?/SPAN>s Startup Time
o Programmable Clock Output
300MHz to 450MHz Low-Power,
Crystal-Based +10dBm ASK/FSK Transmitter
________________________________________________________________ Maxim Integrated Products   1
16   15   14   13
9
10
11
12
CLK0
CLK1
DEV0
DEV1
TOP VIEW
4
3
2
1
ENABLE
EP*
DIN
MODE
V
DD
5    6    7    8
MAX1479
TQFN
(3mm x 3mm)
*CONNECT EP TO GND.
Pin Configuration
Ordering Information
MAX1479
ENABLE
DIN
MODE
V
DD
CLK0
CLK1
DEV0
DEV1
CRYSTAL
DRIVER
4
3
2
1
5
6
7
8
9
10
11
12
13
14
15
16
CLOCK
DIVIDER
DIVIDE
BY 32
LOOP
FILTER
ASK
FSK
PA
ENVELOPE
SHAPING
DEVIATION
PD/CP
VCO
Functional Diagram
19-3353; Rev 1; 6/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxims website at www.maxim-ic.com.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
E
V
A
L
UA
T
IO
N
 
KI
T
A
V
A
IL
A
B
L
E
PART
TEMP RANGE
PIN-PACKAGE
MAX1479ATE+
-40癈 to +125癈    16 TQFN-EP*
Typical Application Circuit appears at end of data sheet.
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相关代理商/技术参数
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MAX1479EVKIT-433 功能描述:射频开发工具 MAX1479 Eval Kit RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
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MAX147ACAP+ 功能描述:模数转换器 - ADC 12-Bit 8Ch 133ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX147ACAP+T 功能描述:模数转换器 - ADC 12-Bit 8Ch 133ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX147ACAP-T 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
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