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參數(shù)資料
| 型號： | AS3902 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | ISM 433 MHz ASK Transmitter |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數(shù)： | 2/14頁 |
| 文件大?。?/td> | 348K |
| 代理商： | AS3902 |
ISM 433 MHz ASK Transmitter – Preliminary Data Sheet
AS3902
Rev. A7, December 2000
Page 2 of 14
Key Features
Supports the European 433 MHz ISM band.
No frequency pulling by (antenna) load variation due to PLL synthesizer.
Designed to be conform to EN 300 220-1 requirements.
ASK data rate range from 0 to 32 kbit/s.
Supports clock and reset signals for the external μC. Therefore no separate μC XTAL is
required.
Supports total shut down mode without any running XTAL oscillator.
Typically 2 external resistors and 3 capacitors required.
FSK operation by XTAL pulling possible.
315 MHz US ISM band application possible.
Wide supply range between 2.7 V to 5 V.
Low TX current, typical 8 mA @ transmitting a High (“H“), 1 mA @ transmitting a Low (“L“).
Wide operating temperature range from –40 °C to +85 °C.
Miniature surface mount 8 pin MSOP (preferred) or SOIC package.
General Description
The AS3902 is a single channel low power 433 MHz ASK transmitter. It uses a fully integrated
PLL stabilized RF-oscillator which avoids frequency pulling by approaching the antenna with
objects as it occurs at SAW resonator based transmitters. ASK modulation is performed by
switching the transmitter on and off by an applied data stream.
The AS3902 contains a bi-directional three line micro-controller (μC) interface to support the
μC with a clock and a reset signal and to operate the highly efficient power up/down manage-
ment (including clock-free total shut-down) of the AS3902 by the μC.
As external components the AS3902 need only a reference XTAL, three capacitors and up to
two resistors.
Applications
Short range radio data transmission.
Remote keyless entry systems.
Domestic and consumer remote control units.
Cordless alarm systems.
Remote metering.
Low power telemetry.
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| AS3909 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:13.56 MHz RFID Reader IC, ISO-14443 A/B |
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