收藏本站
MAX1473
315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
Peak Detector
The peak detector output (PDOUT), in conjunction with
an external RC filter, creates a DC output voltage equal
to the peak value of the data signal. The resistor pro-
vides a path for the capacitor to discharge, allowing the
peak detector to dynamically follow peak changes of
the data filter output voltage. For faster receiver startup,
the circuit shown in Figure 4 can be used.
Layout Considerations
MAX1473
DATA
SLICER
A properly designed PCB is an essential part of any
RF/microwave circuit. On high-frequency inputs and
25
DATAOUT
20
DSN
23
DSP
19
DFO
26
PDOUT
outputs, use controlled-impedance lines and keep
them as short as possible to minimize losses and radia-
tion. At high frequencies, trace lengths that are on the
order of λ /10 or longer act as antennas.
Keeping the traces short also reduces parasitic induc-
tance. Generally, 1in of a PCB trace adds about 20nH
of parasitic inductance. The parasitic inductance can
have a dramatic effect on the effective inductance of a
passive component. For example, a 0.5in trace con-
necting a 100nH inductor adds an extra 10nH of induc-
tance or 10%.
To reduce the parasitic inductance, use wider traces
and a solid ground or power plane below the signal
traces. Also, use low-inductance connections to ground
on all GND pins, and place decoupling capacitors
close to all power-supply pins.
12
25k ?
47nF
Figure 4. Using PDOUT for Faster Startup
Control Interface Considerations
When operating the MAX1473 with a +4.5V to +5.5V
supply voltage, the PWRDN and AGCDIS pins may be
driven by a microcontroller with either 3V or 5V inter-
face logic levels. When operating the MAX1473 with a
+3.0V to +3.6V supply, the microcontroller must pro-
duce logic levels which conform to the V IH and V IL
specifications in the DC Electrical Characteristics Table
for the MAX1473.
Maxim Integrated
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
MAX1479EVKIT-315 EVAL KIT FOR MAX1479 315MHZ
MAX19700EVKIT EVAL KIT FOR MAX19700
MAX19985AETX+T IC MIXER DOWNCONV 36-TQFN-EP
MAX19993ETX+ IC MIXER DOWNCONV 36TQFN
MAX19994AEVKIT# KIT EVAL FOR MAX19994A MIXER
MAX19995ETX+T IC DOWNCONVERTER 2CH 36TQFN
MAX19995EVKIT# EVALUATION KIT FOR MAX19995
MAX19996AEVKIT# EVALUATION KIT FOR MAX19996A
相关代理商/技术参数
MAX1474AXT 制造商:Maxim Integrated Products 功能描述:MINIATURE ELECTRONICALLY TRIMMABLE CAPACITOR - Rail/Tube
MAX1474AXT+ 制造商:Maxim Integrated Products 功能描述:MINIATURE ELECTRONICALLY TRIMMABLE CAP 6PIN SC-70 - Rail/Tube
MAX1474AXT+T 功能描述:整流器/与可变电容器 Mini Electronically Trimmable Cap RoHS:否 制造商:Xicon 电容范围:2.8 pF to 12.5 pF 容差: 电压额定值:200 V 工作温度范围:- 35 C to + 85 C 端接类型:SMD/SMT 产品:Trimmer Capacitors - Ceramic Dielectric
MAX1474AXT-T 制造商:Maxim Integrated Products 功能描述:MINIATURE ELECTRONICALLY TRIMMABLE CAPACITOR - Tape and Reel
MAX1474CXT 制造商:Maxim Integrated Products 功能描述:MINIATURE ELECTRONICALLY TRIMMABLE CAPACITOR - Rail/Tube
MAX14752 制造商:Maxim Integrated Products 功能描述:8-CHANNEL/DUAL 4-CHANNEL 72V ANALOG MUX - Rail/Tube
MAX14752EUE+ 功能描述:多路器开关 IC 8:1 72V Analog Mux RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16
MAX14752EUE+T 功能描述:多路器开关 IC 8:1 72V Analog Mux RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16