Austriamicrosystems公司的 AS3930是單路低功耗ASK接收器,能產生LF載波頻率在110-150kHz間的叫醒信號.集成的相關器能用來檢測可編程的16位叫醒圖,叫醒支持1秒到2小時, 叫醒靈敏度100μVRMS,工作電壓2.4-3.6V,主要用在RF標簽,實時定位系統,工作人員識別,接入控制和無線傳感器.本文介紹AS3930主要特性, 方框圖,有晶振,無晶振和外接時鐘源的AS3930應用電路.
Active RFID tags, real-time location systems, operator identification, access control, and wireless sensors
AS3930 Single Channel Low Frequency Wakeup Receiver
The AS3930 is a single-channel low power ASK receiver that is able to generate a wakeup upon detection of a data signal which uses a LF carrier frequency between 110 - 150 kHz. The integrated correlator can be used for detection of a programmable 16-bit wakeup pattern.
The AS3930 provides a digital RSSI value, it supports a programmable data rate and Manchester decoding with clock recovery. The AS3930 offers a real-time clock (RTC), which is either derived from a crystal oscillator or the internal RC oscillator.
The programmable features of AS3930 enable to optimize its settings for achieving a longer distance while retaining a reliable wakeup generation. The sensitivity level of AS3930 can be adjusted in presence of a strong field or in noisy environments.
The device is available in 16 pin TSSOP and QFN 4x4 16 LD packages.
AS3930主要特性:
Single channel ASK wakeup receiver
Carrier frequency range 110-150 kHz
Programmable wakeup pattern (16bits)
Doubling of wakeup pattern supported
Wakeup without pattern detection supported
Wakeup sensitivity 100μVRMS (typ.)
Adjustable sensitivity level
Highly resistant to false wakeups
False wakeup counter
Periodical forced
wakeup supported (1s–2h)
Low power listening modes
Current consumption in listening mode 1.37 μA (typ.)
Data rate adjustable from 0.5 - 4 kbps (Manchester)
Manchester decoding with clock recovery
Digital RSSI
Dynamic range 64dB 5 bit
RSSI step (2dB per step)
RTC based on 32kHz XTAL, RC-OSC, or external clock
Operating temperature range -40 to +85℃
Operating supply voltage 2.4 - 3.6V (TA = 25℃)
Bidirectional serial digital interface (SDI)
Package option 16 pin TSSOP, QFN 4x4 16 LD
AS3930應用:
The AS3930 is ideal for Active RFID tags, real-time location systems, operator identification, access control, and wireless sensors.
圖1.AS3930方框圖
圖2.有晶振的AS3930應用電路
圖3.無晶振的AS3930應用電路
圖4.外接時鐘源的AS3930應用電路
詳情請見:
http://www.austriamicrosystems.com/eng/Products/RF-Products-RFID/Low-Frequency/AS3930
Active RFID tags, real-time location systems, operator identification, access control, and wireless sensors
AS3930 Single Channel Low Frequency Wakeup Receiver
The AS3930 is a single-channel low power ASK receiver that is able to generate a wakeup upon detection of a data signal which uses a LF carrier frequency between 110 - 150 kHz. The integrated correlator can be used for detection of a programmable 16-bit wakeup pattern.
The AS3930 provides a digital RSSI value, it supports a programmable data rate and Manchester decoding with clock recovery. The AS3930 offers a real-time clock (RTC), which is either derived from a crystal oscillator or the internal RC oscillator.
The programmable features of AS3930 enable to optimize its settings for achieving a longer distance while retaining a reliable wakeup generation. The sensitivity level of AS3930 can be adjusted in presence of a strong field or in noisy environments.
The device is available in 16 pin TSSOP and QFN 4x4 16 LD packages.
AS3930主要特性:
Single channel ASK wakeup receiver
Carrier frequency range 110-150 kHz
Programmable wakeup pattern (16bits)
Doubling of wakeup pattern supported
Wakeup without pattern detection supported
Wakeup sensitivity 100μVRMS (typ.)
Adjustable sensitivity level
Highly resistant to false wakeups
False wakeup counter
Periodical forced
wakeup supported (1s–2h)
Low power listening modes
Current consumption in listening mode 1.37 μA (typ.)
Data rate adjustable from 0.5 - 4 kbps (Manchester)
Manchester decoding with clock recovery
Digital RSSI
Dynamic range 64dB 5 bit
RSSI step (2dB per step)
RTC based on 32kHz XTAL, RC-OSC, or external clock
Operating temperature range -40 to +85℃
Operating supply voltage 2.4 - 3.6V (TA = 25℃)
Bidirectional serial digital interface (SDI)
Package option 16 pin TSSOP, QFN 4x4 16 LD
AS3930應用:
The AS3930 is ideal for Active RFID tags, real-time location systems, operator identification, access control, and wireless sensors.
圖1.AS3930方框圖
圖2.有晶振的AS3930應用電路
圖3.無晶振的AS3930應用電路
圖4.外接時鐘源的AS3930應用電路
詳情請見:
http://www.austriamicrosystems.com/eng/Products/RF-Products-RFID/Low-Frequency/AS3930
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