參數(shù)資料
型號(hào)： TDA5212
廠商： INFINEON TECHNOLOGIES AG
英文描述： ASK/FSK 915MHz Single Conversion Receiver
中文描述： 詢價(jià)/ FSK信號(hào)915MHz單一轉(zhuǎn)換接收器
文件頁(yè)數(shù)： 20/51頁(yè)
文件大小： 1222K
代理商： TDA5212
Functional Description
3 - 12
TDA 5212
preliminary
Wireless Components
Specification, May 2003
The DC gain is 1 in order not to saturate the subsequent Data Filter wih the DC
offset produced by the demodulator in case of large frequency offsets of the IF
signal. The resulting frequency characteristic and details on the principle of
operation of the switch are described in Section 4.6. The demodulator circuit is
switched off in case of reception of ASK signals.
3.4.7
Data Filter
The data filter comprises an OP-Amp with a bandwidth of 100kHz used as a
voltage follower and two 100k
on-chip resistors. Along with two external
capacitors a 2nd order Sallen-Key low pass filter is formed. The selection of the
capacitor values is described in Section 4.2.
3.4.8
Data Slicer
The data slicer is a fast comparator with a bandwidth of 100 kHz. This allows
for a maximum receive data rate of approximately 120kBaud. The maximum
achievable data rate also depends on the IF Filter bandwidth and the local oscil-
lator tolerance values. Both inputs are accessible. The output delivers a digital
data signal (CMOS-like levels) for the detector. The self-adjusting threshold on
pin 20 its generated by RC-term or peak detector depending on the baseband
coding scheme. The data slicer threshold generation alternatives are described
in more detail in Section 4.5.
3.4.9
Peak Detector
The peak detector generates a DC voltage which is proportional to the peak
value of the receive data signal. An external RC network is necessary. The input
is connected to the output of the RSSI-output of the Limiter, the output is con-
nected to the
PDO
pin (Pin 26 ). This output can be used as an indicator for the
received signal strength to use in wake-up circuits and as a reference for the
data slicer in ASK mode. The output current is typically 850μA, the leakage cur-
rent is typically 700nA. Note that the RSSI level is also output in case of FSK
mode.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA5212_06 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ASK/FSK 915MHz Single Conversion Receiver
TDA5212T 制造商:Infineon Technologies AG 功能描述:915MHZ ASK/FSK SUPHET RCVR TSS
TDA5212XUMA1 制造商:Infineon Technologies AG 功能描述:RF Receiver ASK/FSK 5V T/R 制造商:Infineon Technologies AG 功能描述:RF Receiver ASK/FSK 5V 28-Pin TSSOP T/R 制造商:Infineon Technologies AG 功能描述:CONTROL - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC FSK/ASK RECEIVER P-TSSOP-28
TDA5220 功能描述:射頻接收器 ASK/FSK SINGLE CONVERSION RECEIVER RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel
TDA5220T 制造商:Infineon Technologies AG 功能描述:RKE RX RECIEVER, TSSOP-28, 3K
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