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參數(shù)資料
| 型號： | T5750 |
| 廠商： | Atmel Corp. |
| 英文描述： | UHF ASK/FSK TRANSMITTER |
| 中文描述： | 超高頻ASK / FSK發(fā)射器 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 212K |
| 代理商： | T5750 |
3
T5750 [Preliminary]
4546B–RKE–07/04
Figure 3.
Block Diagram
General Description
This fully integrated PLL transmitter allows particularly simple, low-cost RF miniature
transmitters to be assembled. The VCO is locked to 64
×
f
XTAL
hence a 13.5672 MHz
crystal is needed for a 868.3 MHz transmitter and a 14.2969 MHz crystal for a 915 MHz
transmitter. All other PLL and VCO peripheral elements are integrated.
The XTO is a series resonance oscillator so that only one capacitor together with a
crystal connected in series to GND are needed as external elements.
The crystal oscillator together with the PLL needs typically <1 ms until the PLL is locked
and the CLK output is stable. There is a wait time of
≥
4 ms must be used until the CLK
is used for the microcontroller and the PA is switched on.
The power amplifier is an open-collector output delivering a current pulse which is nearly
independent from the load impedance. The delivered output power is hence controllable
via the connected load impedance.
This output configuration enables a simple matching to any kind of antenna or to 50
. A
high power efficiency of
η
= P
out
/(I
S,PA
×
V
S
) of 24% for the power amplifier at 868.3 MHz
results when an optimized load impedance of Z
Load
= (166 + j226)
is used at 3 V sup-
ply voltage.
CLK
PA_ENABLE
ANT2
ANT1
ENABLE
8
GND
7
VS
6
XTAL
5
1
2
3
4
VCO
LF
CP
64
XTO
PLL
PA
f
4
Power up / down
T5750
PFD
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T5750_07 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:UHF ASK/FSK Transmitter |
| T5750-6AP | 功能描述:IC TX 868-928MHZ ASK/FSK 8-TSSOP RoHS:否 類別:RF/IF 和 RFID >> RF 發(fā)射器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- 頻率:310MHz ~ 440MHz 應(yīng)用:- 調(diào)制或協(xié)議:UHF，ASK 數(shù)據(jù)傳輸率 - 最大:20 kBaud 功率 - 輸出:1dBm ~ 5dBm 電流 - 傳輸:10mA 數(shù)據(jù)接口:PCB，表面貼裝 天線連接器:PCB，表面貼裝 存儲容量:- 特點(diǎn):- 電源電壓:2.2 V ~ 4 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-LSSOP（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| T5750-6AQ | 功能描述:IC TX 868-928MHZ ASK/FSK 8TSSOP RoHS:否 類別:RF/IF 和 RFID >> RF 發(fā)射器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- 頻率:310MHz ~ 440MHz 應(yīng)用:- 調(diào)制或協(xié)議:UHF，ASK 數(shù)據(jù)傳輸率 - 最大:20 kBaud 功率 - 輸出:1dBm ~ 5dBm 電流 - 傳輸:10mA 數(shù)據(jù)接口:PCB，表面貼裝 天線連接器:PCB，表面貼裝 存儲容量:- 特點(diǎn):- 電源電壓:2.2 V ~ 4 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-LSSOP（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| T5750-6AQJ | 功能描述:射頻發(fā)射器 ASK/FSK Transmitter 868 - 928 MHz RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel |
| T5750-6AQJ 71 | 制造商:Atmel Corporation 功能描述:UHF ASK/FSK TRANSMITTER |
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