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參數(shù)資料
| 型號： | PT4316-SL |
| 廠商： | Princeton Technology Corporation |
| 英文描述： | Low Power 315/433 MHz OOK/ASK Superheterodyne Receiver with SAW-based Oscillator |
| 中文描述： | 低功耗433分之315兆赫元件Ook / ASK超外差接收器與基于SAW振蕩器 |
| 文件頁數(shù)： | 11/27頁 |
| 文件大?。?/td> | 501K |
| 代理商： | PT4316-SL |
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Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PEAK DETECTOR
The peak detector generates a DC voltage which is proportional to the peak value of the received data
signal. An external R-C network is necessary. The peak detector input is connected to the RSSI output
of the limiter and the output is connected to pin 8 (DSP). This output can be used as an indicator for the
received signal strength for use in wake-up circuits and as a reference for the data slicer in ASK mode.
The time constant is calculated with the driving current of the data filter op-amp, 100
μ
A. Circuit for
using peak detector for faster start-up as the following figure.
PT4316 V1.6
- 11 -
August, 2007
Low Power 315/433 MHz OOK/ASK Superheterodyne
Receiver with SAW-based Oscillator
PT4316
Data Output
Data Slicer
R4
Data Filter
C12
12
11
R5
DATA SLICER
The data slicer consists chiefly of a fast comparator, which allows for a maximum receive data rate of
up to 50Kb/s. The maximum achievable data rate also depends upon the IF filter bandwidth. Both data
slicer inputs are accessible off-chip to allow for easy adjustment of the slicing threshold. The output
delivers a digital data signal (CMOS level) for subsequent circuits. The self-adjusting threshold on pin
12(DSN) is generated by an R-C network or peak detector depending upon the baseband coding
scheme.
The suggested data slicer configuration uses an internal 100K
resistor connected between DSN and
DSP with a capacitor from DSN to ground as shown in the following figure. The cut-off frequency of the
R-C integrator must be set lower than the lowest frequency appearing in the data signal to minimize
distortion in the output signal. Circuit for generating data slicer threshold as following figure.
Data Output
Data Slicer
Data Filter
C12
12
11
相關(guān)PDF資料 |
PDF描述 |
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| PT4316-X | Low Power 315/433 MHz OOK/ASK Superheterodyne Receiver with SAW-based Oscillator |
| PT4316-XL | Low Power 315/433 MHz OOK/ASK Superheterodyne Receiver with SAW-based Oscillator |
| PT4485 | 30V Single N-Channel HEXFET Power MOSFET in a TO-220AB package; A IRL3803 with Standard Packaging |
| PT4486 | 30V Single N-Channel HEXFET Power MOSFET in a TO-220AB package; Similar to the IRL3803 in lead free packaging |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PT4316-X | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Low Power 315/433 MHz OOK/ASK Superheterodyne Receiver with SAW-based Oscillator |
| PT4316-XL | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Low Power 315/433 MHz OOK/ASK Superheterodyne Receiver with SAW-based Oscillator |
| PT4317 | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:PT4317 Low Power 315/433MHz OOK/ASK Superheterodyne Receiver with SAW-Based Oscillator |
| PT431F | 制造商:Sharp Microelectronics Corporation 功能描述: |
| PT4-4 | 制造商:WM BERG 功能描述: |
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