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參數(shù)資料
| 型號： | T5744-TGQ |
| 廠商： | ATMEL CORP |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | UHF ASK Receiver |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO20 |
| 封裝： | SO-20 |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 277K |
| 代理商： | T5744-TGQ |
9
T5744
4521B–RKE–01/03
Pin MODE can now be set in accordance with the desired clock cycle T
Clk
. T
Clk
controls
the following application-relevant parameters:
Timing of the analog and digital signal processing
IF filter center frequency (f
IF0
)
Most applications are dominated by two transmission frequencies: f
Send
= 315 MHz is
mainly used in USA, f
Send
= 433.92 MHz in Europe. In order to ease the usage of all T
Clk
-
dependent parameters, the electrical characteristics display three conditions for each
parameter.
Application USA
(f
XTO
= 4.90625 MHz, MODE = L, T
Clk
= 2.0383 μs)
Application Europe
(f
XTO
= 6.76438 MHz, MODE = H, T
Clk
= 2.0697 μs)
Other applications
(T
Clk
is dependent on f
XTO
and on the logical state of Pin MODE. The electrical
characteristic is given as a function of T
Clk
).
The clock cycle of some function blocks depends on the selected baud rate range
(BR_Range) which is defined by the Pins BR_0 and BR_1. This clock cycle T
XClk
is
defined by the following formulas for further reference:
BR_Range = BR_Range0:
T
XClk
= 8 T
Clk
T
XClk
= 4 T
Clk
T
XClk
= 2 T
Clk
T
XClk
= 1 T
Clk
BR_Range1:
BR_Range2:
BR_Range3:
Pin ENABLE
Via the Pin ENABLE the operating mode of the receiver can be selected (see Figure 10
and Figure 11).
If the Pin ENABLE is held to Low, the receiver remains in sleep mode. All circuits for sig-
nal processing are disabled and only the XTO is running in that case. The current
consumption is I
S
= I
Soff
in that case. During the sleep mode the receiver is not sensitive
to a transmitter signal.
To activate the receiver, the Pin ENABLE must be held to High. During the start-up
period, T
Startup
, all signal processing circuits are enabled and settled. The duration of the
start-up period depends on the selected baud-rate range (BR_Range).
After the start-up period, all circuits are in a stable condition and the receiver is in the
receiving mode.
In receiving mode, the internal data signal (Dem_out) is switched to Pin DATA. To avoid
incorrect timing at the begin of the data stream, the begin is synchronized to a falling
edge of the incoming data signal. The receiver stays in the receiving mode until it is
switched back to sleep mode via Pin ENABLE.
During start-up and receiving mode, the current consumption is I
S
= I
Son
.
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| T5744-TGS | 功能描述:射頻收發(fā)器 UHF ASK Receiver IC RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| T5744-TKQ | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:UHF ASK Receiver |
| T5744-TKS | 功能描述:射頻收發(fā)器 UHF ASK Receiver IC RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| T5746 | 功能描述:手工工具 SEPARATOR TOOL RoHS:否 制造商:Molex 產(chǎn)品:Extraction Tools 類型: 描述/功能:Extraction tool |
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