AS3900-BQFP

AS3900-BQFP Datasheet

AS3900

Part	Datasheet
AS3900-BQFP	AS3900-BQFP (pdf)

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Data Sheet AS3900 27MHz Low Power Star Network Transceiver 1 General Description The AS3900 is a low power FSK transceiver ideal for batteryoperated short range devices SRD applications in which a limited amount of data rate up to 210 kbit/s need to be transferred. The device can be configured as transceiver, transmitter only or receiver only system and operates in one channel in the worldwide ISM band at 27 MHz. The frequency of the external oscillator determines the operating frequency. Use of 27 MHz is in particular advantageous for communication in close proximity of the human body due to the low absorption of the signal by tissue because of the low specific absorption rate at 27 MHz. The device incorporates a serial digital interface SDI , which enables bidirectional communication with external system components. The integrated real-time-clock, sophisticated wake-up functionality, and link manager enable current efficient control of all communication events and eliminate the need for an expensive microcontroller. The AS3900 supports data transfer in burst mode bidirectional, controlled by link manager , semi-continuous bidirectional, controlled by microcontroller and continuous mode unidirectional, controlled by microcontroller and requires only a small number of external components. 2 Key Features FSK transceiver Operating frequency MHz ISM - band Integrated real-time-clock RTC based on 32.768kHz XTAL FM deviation selectable ±106 kHz, ±53 kHz Data transfer in burst mode and semi- continuous mode Data rate adjustable to 53, 106, 212 kbit/s Low average current consumption in Tx and Rx mode Output power adjustable to 0, +5, +10 dBm Integrated OOK based wake-up system Link manager for control of star network with up to 8 clients Bidirectional serial digital interface SDI Main Characteristics Operating temperature range -40ºC to +85ºC Operating supply voltage 2.2V to 3.6V Functional down to 2.0V Rx current consumption mA typ. Tx current consumption mA Maximum output power 10 dBm delivered to matching network and antenna Receiver sensitivity dBm 106 kbit/s Polling mode average current consumption typ. 2.5µA Power down current consumption max. 700nA Typ. communication range using small antenna QFN 28 pin 5x5 package Additional Features Reliable pairing and synchronization of master and clients Automatic 16 bit CRC computation in burst mode Auto-acknowledgement and re-transmit Programmable timers to assign variable communication cycle times Reliable system start due to internal POR Programmable microcontroller clock frequency Separate interrupt request line Battery level detector Digital RSSI value accessible in register User programmable Identification with OTP memory 24 bits 3 Applications The AS3900 is ideal for reliable low-power short-range data exchange, data transfer among devices in close proximity of human body Area Networks , simple control networks home, industry , and interactive remote controls. A typical application can be designed in combination with a microcontroller, an antenna and a few additional passive components. 1 - 59 Microcontroller AS3900 Data Sheet - Applications Figure Typical Application Diagram of Low Power Star Network Transceiver AS3900 C1 C2 Y1 32.768kHz C3 C4 Y2 27.12MHz 28 VDDRF 27 X32_IN 26 X32_OUT 25 GND 24 VDD 23 X27_IN 22 X27_OUT Antenna Procedure 26 Master Initializes Pairing wakeup Procedure 27 Transmission 30 Packet mode Bidirectional Timer 31 Scan Procedure 34 Data 36 Frame Structure for Timer Controlled Packet Mode 36 Frame Structure for ACKNOWLEDGE ACK 36 Frame structure for ACKNOWLEDGE with appended data 37 Frame Structure for NOT-ACKNOWLEDGE 37 Frame Structure for NOT-ACKNOWLEDGE and Data Retransmit NAR 37 Configuration Registers 37 Main Register Bank ADDRESS 0x00 37 Shadow Register Bank ADDRESS 0x00 39 Detailed 39 Feature Description 51 One Time Programmable Memory 51 Communication Error Counter cesmax 52 Cycle Time and Random 52 Battery Level Indicator 53 Output Power Selection 53 RSSI 54 9 Application 55 Microcontroller 55 Crystal 56 Power Supply 56 Antenna 56 Tuning 56 10 Package Drawings and 58 11 Ordering Information 59 4 - 59 AS3900 Data Sheet - Pin Assignment 4 Pin Assignment Figure AS3900 Pin Assignment Top View VDDRF X32_IN X32_OUT GND VDD X27_IN X27_OUT 28 27 26 25 24 23 22 GND 1 21 NC RF1OUT 2 20 IRQ RF2OUT 3 GND 4 AS3900 19 MCU_CLK 18 SDATAO RF1IN 5 17 SEN RF2IN 6 Exp. Pad 16 SCLK GND 7 15 SDATAI 8 9 10 11 12 13 14 NC POR NC VDD_OTP VSS_OTP NC Pin Description Table QFN 28 pin Package Pin Name GND RF1OUT RF2OUT GND RF1IN RF2IN GND NC POR NC VDD_OTP Pin Number 1 2 4 5 6 7 8 9 10 11 12 Pin Type S AO AO S AI S Negative RF Supply Voltage. Ground reference point for VDDRF. Transmitter Positive Output. Analog Push/Pull Output of Power Amplifier for positive amplitude. Output Impedance can be programmed to or Transmitter can be programmed to single ended or true-differential analog outputs. Transmitter Negative Output. Analog Push/Pull Output of Power Amplifier for negative amplitude. Output Impedance can be programmed to or Transmitter can be programmed to single ended or differential analog outputs. In single ended mode RF2OUT is connected to GND. Negative RF Supply Voltage. Ground reference point for RF outputs and inputs. Receiver Positive Input. Positive analog input of differential Low Noise Amplifier. Receiver Negative Input. Negative analog input of differential Low Noise Amplifier. Negative RF Supply Voltage. Ground reference point for RF outputs and inputs. Data Sheet - Ordering Information 11 Ordering Information Table Ordering Information Ordering Code Type AS3900-BQFT QFN 5x5 28LD Marking AS3900 Delivery Form1 7 inches Tape&Reel Dry Pack Sensitivity Level =3 according to IPC/JEDEC J-STD-033A for full reels. Note All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at Delivery Quantity 1000 pcs Copyrights Copyright 1997-2010, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Headquarters austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: 59 - 59

PDF Datasheet Preview

Data Sheet

AS3900
27MHz Low Power Star Network Transceiver
1 General Description

The AS3900 is a low power FSK transceiver ideal for batteryoperated short range devices SRD applications in which a limited amount of data rate up to 210 kbit/s need to be transferred. The device can be configured as transceiver, transmitter only or receiver only system and operates in one channel in the worldwide ISM band at 27 MHz.

The frequency of the external oscillator determines the operating frequency. Use of 27 MHz is in particular advantageous for communication in close proximity of the human body due to the low absorption of the signal by tissue because of the low specific absorption rate at 27 MHz. The device incorporates a serial digital interface SDI , which enables bidirectional communication with external system components.

The integrated real-time-clock, sophisticated wake-up functionality, and link manager enable current efficient control of all communication events and eliminate the need for an expensive microcontroller.

The AS3900 supports data transfer in burst mode bidirectional, controlled by link manager , semi-continuous bidirectional, controlled by microcontroller and continuous mode unidirectional, controlled by microcontroller and requires only a small number of external components.
2 Key Features

FSK transceiver

Operating frequency MHz ISM - band

Integrated real-time-clock RTC based on 32.768kHz XTAL

FM deviation selectable ±106 kHz, ±53 kHz

Data transfer in burst mode and semi- continuous mode

Data rate adjustable to 53, 106, 212 kbit/s

Low average current consumption in Tx and Rx mode

Output power adjustable to 0, +5, +10 dBm

Integrated OOK based wake-up system

Link manager for control of star network with up to 8 clients

Bidirectional serial digital interface SDI

Main Characteristics Operating temperature range -40ºC to +85ºC Operating supply voltage 2.2V to 3.6V Functional down to 2.0V Rx current consumption mA typ. Tx current consumption mA Maximum output power 10 dBm delivered to matching network and antenna Receiver sensitivity dBm 106 kbit/s Polling mode average current consumption typ. 2.5µA Power down current consumption max. 700nA Typ. communication range using small antenna QFN 28 pin 5x5 package

Additional Features Reliable pairing and synchronization of master and clients Automatic 16 bit CRC computation in burst mode Auto-acknowledgement and re-transmit Programmable timers to assign variable communication cycle times Reliable system start due to internal POR Programmable microcontroller clock frequency Separate interrupt request line Battery level detector Digital RSSI value accessible in register User programmable Identification with OTP memory 24 bits
3 Applications

The AS3900 is ideal for reliable low-power short-range data exchange, data transfer among devices in close proximity of human body Area Networks , simple control networks home, industry , and interactive remote controls. A typical application can be designed in combination with a microcontroller, an antenna and a few additional passive components.
1 - 59

Microcontroller

AS3900

Data Sheet - Applications

Figure Typical Application Diagram of Low Power Star Network Transceiver AS3900

C1 C2 Y1
32.768kHz

C3 C4 Y2
27.12MHz
28 VDDRF
27 X32_IN
26 X32_OUT
25 GND
24 VDD
23 X27_IN
22 X27_OUT

Antenna
Procedure 26 Master Initializes Pairing wakeup Procedure 27 Transmission 30 Packet mode Bidirectional Timer 31 Scan Procedure 34 Data 36 Frame Structure for Timer Controlled Packet Mode 36 Frame Structure for ACKNOWLEDGE ACK 36 Frame structure for ACKNOWLEDGE with appended data 37 Frame Structure for NOT-ACKNOWLEDGE 37 Frame Structure for NOT-ACKNOWLEDGE and Data Retransmit NAR 37 Configuration Registers 37 Main Register Bank ADDRESS 0x00 37 Shadow Register Bank ADDRESS 0x00 39 Detailed 39 Feature Description 51 One Time Programmable Memory 51 Communication Error Counter cesmax 52 Cycle Time and Random 52 Battery Level Indicator 53 Output Power Selection 53 RSSI 54 9 Application 55 Microcontroller 55 Crystal 56 Power Supply 56 Antenna 56 Tuning 56 10 Package Drawings and 58 11 Ordering Information 59
4 - 59

AS3900

Data Sheet - Pin Assignment
4 Pin Assignment

Figure AS3900 Pin Assignment Top View

VDDRF X32_IN X32_OUT GND VDD X27_IN X27_OUT
28 27 26 25 24 23 22

GND 1
21 NC

RF1OUT 2
20 IRQ

RF2OUT 3 GND 4

AS3900
19 MCU_CLK 18 SDATAO

RF1IN 5
17 SEN

RF2IN 6

Exp. Pad 16 SCLK

GND 7
15 SDATAI
8 9 10 11 12 13 14

NC POR

NC VDD_OTP VSS_OTP NC

Pin Description

Table QFN 28 pin Package Pin Name GND

RF1OUT

RF2OUT

GND RF1IN RF2IN GND

NC POR NC VDD_OTP

Pin Number 1 2
4 5 6 7 8 9 10 11 12

Pin Type S AO

AO S AI S

Negative RF Supply Voltage. Ground reference point for VDDRF.

Transmitter Positive Output. Analog Push/Pull Output of Power Amplifier for positive amplitude. Output Impedance can be programmed to or Transmitter can be programmed to single ended or true-differential analog outputs.

Transmitter Negative Output. Analog Push/Pull Output of Power Amplifier for negative amplitude. Output Impedance can be programmed to or Transmitter can be programmed to single ended or differential analog outputs. In single ended mode RF2OUT is connected to GND.

Negative RF Supply Voltage. Ground reference point for RF outputs and inputs.

Receiver Positive Input. Positive analog input of differential Low Noise Amplifier.

Receiver Negative Input. Negative analog input of differential Low Noise Amplifier.

Negative RF Supply Voltage. Ground reference point for RF outputs and inputs.
Data Sheet - Ordering Information
11 Ordering Information
Table Ordering Information
Ordering Code

Type

AS3900-BQFT

QFN 5x5 28LD

Marking AS3900

Delivery Form1 7 inches Tape&Reel

Dry Pack Sensitivity Level =3 according to IPC/JEDEC J-STD-033A for full reels.

Note All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect:

For further information and requests, please contact us or find your local distributor at

Delivery Quantity 1000 pcs

Copyrights

Copyright 1997-2010, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.

All products and companies mentioned are trademarks or registered trademarks of their respective companies.

Disclaimer

Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location.

The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services.

Contact Information

Headquarters austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01 For Sales Offices, Distributors and Representatives, please visit:
59 - 59

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AS3900-BQFP Datasheet file may be downloaded here without warranties.

Datasheet ID: AS3900-BQFP 519723