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参数资料
| 型号： | MAX7034AUI/V+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/14页 |
| 文件大小： | 0K |
| 描述： | IC RCVR 315/433MHZ ASK 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： | 50 |
| 频率： | 300MHz ~ 450MHz |
| 灵敏度： | -114dBm |
| 数据传输率 - 最大： | 66 kbps |
| 调制或协议： | ASK |
| 应用： | RKE，遥测，安全技术 |
| 电流 - 接收： | 7.2mA |
| 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： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 管件 |
315MHz/434MHz ASK Superheterodyne
Receiver
Functional Diagram
LNASRC
4
EN_REG LNAOUT
15 6
MIXIN1 MIXIN2
8 9
IRSEL
11
MIXOUT
12
IFIN1
17
IFIN2
18
LNAIN
AVDD
V DD5
3
2
24
LNA
3.4V REG
Q
I
0?
IMAGE
REJECTION
90?
∑
MAX7034
RSSI
IF LIMITING
AMPS
AVDD
DVDD
DGND
7
14
13
DIVIDE
BY 64
PHASE
DETECTOR
VCO
LOOP
FILTER
R DF2
100k Ω
DATA
FILTER
R DF1
100k Ω
DATA
AGND
5, 10
÷ 1
÷ 2
CRYSTAL
DRIVER
POWER-
DOWN
SLICER
16
1
28
27
25
20
23
19
26
21
22
XTALSEL
XTAL1 XTAL2
SHDN
DATAOUT
DSN DSP DFO
PDOUT
OPP
DFFB
Detailed Description
The MAX7034 CMOS superheterodyne receiver and a
few external components provide the complete receive
chain from the antenna to the digital output data.
Depending on signal power and component selection,
data rates can be as high as 33kbps Manchester
(66kbps NRZ).
The MAX7034 is designed to receive binary ASK data
modulated in the 300MHz to 450MHz frequency range.
ASK modulation uses a difference in amplitude of the
carrier to represent logic 0 and logic 1 data.
Voltage Regulator
For operation with a single +4.5V to +5.5V supply voltage,
connect V DD5 and the EN_REG pin to the supply voltage.
An on-chip voltage regulator drives one of the AVDD pins
(pin 2) to approximately +3.4V. For proper operation,
DVDD and both AVDD pins must be connected together.
Low-Noise Amplifier
The LNA is an nMOS cascode amplifier with off-chip
inductive degeneration. The gain and noise figures are
dependent on both the antenna matching network at
the LNA input and the LC tank network between the
LNA output and the mixer inputs.
The off-chip inductive degeneration is achieved by
connecting an inductor from LNASRC to AGND. This
inductor sets the real part of the input impedance at
LNAIN, allowing for a more flexible input impedance
match, such as a typical printed-circuit board (PCB)
trace antenna. A nominal value for this inductor with a
50 Ω input impedance is 15nH, but is affected by the
PCB trace.
The LC tank filter connected to LNAOUT comprises L1
and C9 (see the Typical Application Circuit). Select L1
and C9 to resonate at the desired RF input frequency.
The resonant frequency is given by:
For operation with a single +3.0V to +3.6V supply voltage,
connect both the AVDD pins, DVDD, and V DD5 to the
supply voltage and connect the EN_REG pin to ground
(which disables the internal voltage regulator). If the
f RF =
1
2 π L TOTAL × C TOTAL
MAX7034 is powered from +3.0V to +3.6V, the perfor-
mance is limited to the -40°C to +105°C range.
In either supply voltage mode, bypass V DD5 , DVDD, and
the pin 7 AVDD pin to AGND with 0.01μF capacitors, and
the pin 2 AVDD to AGND with a 0.1μF capacitor, all
placed as close as possible to the pins.
8
where:
L TOTAL = L1 + L PARASITICS .
C TOTAL = C9 + C PARASITICS .
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| MAX7034AUI/V+T | IC RCVR 315/433MHZ ASK 28TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7034AUIVT | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:315MHz/434MHz ASK Superheterodyne Receiver 250μs Startup Time |
| MAX7034EVKIT-315+ | 功能描述:射频开发工具 MAX7034 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 |
| MAX7034EVKIT-433+ | 功能描述:射频开发工具 MAX7034 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 |
| MAX7036 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:300MHz to 450MHz ASK Receiver with Internal IF Filter |
| MAX7036_10 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:300MHz to 450MHz ASK Receiver with Internal IF Filter |
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