參數(shù)資料
型號(hào)： TDA5201
廠商： INFINEON TECHNOLOGIES AG
英文描述： ASK Single Conversion Receiver
中文描述： 調(diào)幅單一轉(zhuǎn)換接收器
文件頁(yè)數(shù)： 23/43頁(yè)
文件大小： 689K
代理商： TDA5201
Applications
4 - 3
TDA 5201
Wireless Components
Specification, July 2004
RSSI-AGC.wmf
Figure 4-2
RSSI Level and Permissive AGC Threshold Levels
The switching point should be chosen according to the intended operating sce-
nario. The determination of the optimum point is described in the accompanying
Application Note, a threshold voltage level of 1.8V is apparently a viable choice.
It should be noted that the output of the 3VOUT pin is capable of driving up to
50μA, but that the THRES pin input current is only in the region of 40nA. As the
current drawn out of the 3VOUT pin is directly related to the receiver power con-
sumption, the power divider resistors should have high impedance values. R4
can be chosen as 120k
, R5 as 180k
to yield an overall 3VOUT output current
of 10μA.
Note:
If the LNA gain shall be kept in either high or low gain mode this has to
be accomplished by tying the
THRES
pin to a fixed voltage. In order to achieve
high gain mode operation, a voltage higher than 2.8V shall be applied to the
THRES
pin, such as a short to the
3VOLT
pin. In order to achieve low gain
mode operation a voltage lower than 0.7V shall be applied to the
THRES
, such
as a short to ground.
As stated above the capacitor connected to the
TAGC
pin is generating the gain
control voltage of the LNA due to the charging and discharging currents of the
OTA and thus is also responsible for the AGC time constant. As the charging
and discharging currents are not equal two different time constants will result.
The time constant corresponding to the charging process of the capacitor shall
be chosen according to the data rate. According to measurements performed
at Infineon the capacitor value should be greater than 47nF.
L
i
0
0.5
1
1.5
2
2.5
3
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
Input Level at LNA Input [dBm]
U
T
R
L
i
RSSI Level
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA5201_10 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ASK Single Conversion Receiver
TDA5201GEG 制造商:Rochester Electronics LLC 功能描述:- Bulk
TDA5201NT 制造商:Infineon Technologies AG 功能描述:RF Receiver ASK 5V 28-Pin TSSOP
TDA5201T 功能描述:RCVR SGL CONV 310-350MHZ 28TSSOP RoHS:否 類別:RF/IF 和 RFID >> RF 接收器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 09/Jan/2012 標(biāo)準(zhǔn)包裝:50 系列:* 頻率:850MHz ~ 2.175GHz 靈敏度:- 數(shù)據(jù)傳輸率 - 最大:- 調(diào)制或協(xié)議:- 應(yīng)用:* 電流 - 接收:* 數(shù)據(jù)接口:PCB，表面貼裝 存儲(chǔ)容量:- 天線連接器:PCB，表面貼裝 特點(diǎn):- 電源電壓:4.75 V ~ 5.25 V 工作溫度:0°C ~ 85°C 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤
TDA5201XUMA1 制造商:Infineon Technologies AG 功能描述:RF Receiver ASK 5V T/R 制造商:Infineon Technologies AG 功能描述:RF Receiver ASK 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 LP SGL CONV ASK P-TSSOP-28
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