19-5029; Rev 3; 7/11
EVALUA
AVAILAB
TION KIT
LE
AISG Integrated Transceiver
General Description
The MAX9947 is an AISG-compliant, fully integrated
transceiver.
The MAX9947 receiver offers a typical dynamic range of
20dB and integrates a bandpass filter that operates in the
2.176MHz frequency with a narrow 200kHz bandwidth.
The MAX9947 transmitter integrates a bandpass filter
that is compliant with the AISG spectrum emission pro-
file. It can modulate OOK signals up to 115.2kbps. The
output power can be varied with external resistors from
+7dBm to +12dBm to compensate for loss in the external
circuitry and cabling.
The MAX9947 also features a direction output to facilitate
the RS-485 bus arbitration in tower-mounted equipment.
The MAX9947 is available in a small, 3mm x 3mm 16-pin
TQFN and is rated for operation in the -40°C to +85°C
temperature range.
Features
S Receiver Wide Input Dynamic Range
-15dBm to +5dBm in 50 I
S Variable Transmitter Output Level from +7dBm to
+12dBm
S AISG-Compliant Output Emission Profile
S AutoDirection Output
S No Need of Microcontrollers to Handle Bus
Arbitration in Tower-Mounted Equipment
S Supports All AISG Data Rates
9.6kbps
38.4kbps
115.2kbps
S Bandpass Filter Compliant with AISG Protocol
Centered Around 2.176MHz
S 3.0V to 5.5V Voltage Supply
S Independent Logic Supply
Base Stations
Applications
S Small, 3mm x 3mm 16-Pin TQFN Package
Ordering Information
Tower Equipment
PART
MAX9947ETE+
TEMP
RANGE
-40 N C to
+85 N C
PIN-PACKAGE
16 TQFN-EP*
TOP
MARK
AHF
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad. Connect EP to GND to enhance thermal
dissipation.
Functional Diagram
RES
BIAS
V L
V CC
XTAL1
XTAL2
TXIN
DIRMD1
DIRMD2
ANALOG
SWITCH
+7dBm TO +12dBm
1.5V
BANDPASS FILTER
TXOUT
SYNCOUT
DIR
DIRECTION
DETECTION
REF
MAX9947
RXOUT
STATE MACHINE
-15dBm
OOK
RXIN
GND
DEMODULATOR
BANDPASS FILTER
_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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相关代理商/技术参数
MAX9947ETE+T 功能描述:射频收发器 AISG Interface RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray
MAX9947EVKIT+ 功能描述:射频开发工具 MAX9947EVKIT+ 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
MAX9949DCCB 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX9949DCCB+ 制造商:Maxim Integrated Products 功能描述:DUAL PER PIN PARAMETRIC MEASUREMENT UNIT 64TQFP - Rail/Tube
MAX9949DCCB+D 功能描述:接口 - 专用 Dual Per-Pin PMU RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59
MAX9949DCCB+T 制造商:Maxim Integrated Products 功能描述:PARAMETRIC MEASUREMENT UNIT 64TQFP - Tape and Reel
MAX9949DCCB+TD 功能描述:接口 - 专用 Dual Per-Pin PMU RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59
MAX9949DCCB-D 功能描述:接口 - 专用 RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59