- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373529 > T5744 (Atmel Corp.) UHF ASK Receiver PDF資料下載
參數(shù)資料
| 型號(hào)： | T5744 |
| 廠商： | Atmel Corp. |
| 英文描述： | UHF ASK Receiver |
| 中文描述： | 超高頻ASK接收機(jī) |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 277K |
| 代理商： | T5744 |
8
T5744
4521B–RKE–01/03
Receiving
Characteristics
The RF receiver T5744 can be operated with and without a SAW front-end filter. In a
typical automotive application, a SAW filter is used to achieve better selectivity. The
selectivity with and without a SAW front-end filter is illustrated in Figure 7. Note that the
mirror frequency is reduced by 40 dB. The plots are printed relatively to the maximum
sensitivity. If a SAW filter is used, an insertion loss of about 4 dB must be considered.
When designing the system in terms of receiving bandwidth, the LO deviation must be
considered as it also determines the IF center frequency. The total LO deviation is cal-
culated to be the sum of the deviation of the crystal and the XTO deviation of the T5744.
Low-cost crystals are specified to be within ±100 ppm. The XTO deviation of the T5744
is an additional deviation due to the XTO circuit. This deviation is specified to be
±30 ppm. If a crystal of ±100 ppm is used, the total deviation is ±130 ppm in that case.
Note that the receiving bandwidth and the IF-filter bandwidth are equivalent.
Figure 8.
Receiving Frequency Response
Basic Clock Cycle of the
Digital Circuitry
The complete timing of the digital circuitry and the analog filtering is derived from one
clock. According to Figure 9, this clock cycle TClk is derived from the crystal oscillator
(XTO) in combination with a divider. The division factor is controlled by the logical state
at Pin MODE. According to chapter 'RF Front End', the frequency of the crystal oscillator
(f
XTO
) is defined by the RF input signal (f
RFin
) which also defines the operating frequency
of the local oscillator (f
LO
).
Figure 9.
Generation of the Basic Clock Cycle
-100.0
-80.0
-60.0
-40.0
-20.0
0.0
-6.0
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
df (MHz)
d
without SAW
with SAW
DVCC
XTO
MODE
T
f
16
15
14
Clk
XTO
XTO
Divider
:14/:10
L : USA(:10)
H: Europe(:14)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T5744-TGQ | UHF ASK Receiver |
| T5744-TGS | UHF ASK Receiver |
| T5744-TKQ | UHF ASK Receiver |
| T5744-TKS | UHF ASK Receiver |
| T5750 | UHF ASK/FSK TRANSMITTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T5744N-TGQ | 功能描述:IC RCVR PLL ASK 450MHZ 20-SOIC 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 |
| T5744N-TGS | 功能描述:IC RCVR PLL ASK 450MHZ 20-SOIC 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 |
| T5744N-TGSY | 制造商:Atmel Corporation 功能描述: |
| T5744N-TK | 功能描述:IC RCVR300-450MHZ UHF ASK 20SSOP 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 |
| T5744N-TKQ | 功能描述:IC RCVR PLL ASK 450MHZ 20-SSOP 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。