U3741BM-P2FL

U3741BM-P2FL Datasheet

U3741BM

Part	Datasheet
U3741BM-P2FL	U3741BM-P2FL (pdf)

Related Parts	Information
U3741BM-P3FLG3	U3741BM-P3FLG3
U3741BM-P3FL	U3741BM-P3FL
U3741BM-P2FLG3	U3741BM-P2FLG3

PDF Datasheet Preview
• Minimal External Circuitry Requirements, No RF Components on the PC Board Except Matching to the Receiver Antenna • High Sensitivity, Especially at Low Data Rates • Sensitivity Reduction Possible Even While Receiving • Fully Integrated VCO • Low Power Consumption Due to Configurable Self Polling with a Programmable Time Frame Check • Supply Voltage V to V • Operating Temperature Range -40°C to 105°C • Single-ended RF Input for Easy Adaptation to λ/4 Antenna or Printed Antenna on PCB • Low-cost Solution Due to High Integration Level • ESD Protection According to MIL-STD 883 4KV HBM Except Pin POUT 2KV HBM • High Image Frequency Suppression due to 1 MHz IF in Conjunction with a SAW Front-end Filter Up to 40 dB is Thereby Achievable with Newer SAWs. • Programmable Output Port for Sensitivity Selection or for Controlling External Periphery • Communication to the Microcontroller Possible via a Single, Bi-directional Data Line • Power Management Polling is also Possible by Means of a Separate Pin via the Microcontroller • 2 Different IF Bandwidth Versions are Available 300 kHz and 600 kHz UHF ASK Receiver IC U3741BM The U3741BM is a multi-chip PLL receiver device supplied in an SO20 package. It has been specially developed for the demands of RF low-cost data transmission systems with low data rates from 1 kBaud to 10 kBaud 1 kBaud to kBaud for FSK in Manchester or Bi-phase code. The receiver is well suited to operate with Atmel's PLL RF transmitter U2741B. Its main applications are in the areas of telemetering, security technology and keyless-entry systems. It can be used in the frequency receiving range of f0 = 300 MHz to 450 MHz for ASK or FSK data transmission. All the statements made below refer to 433.92-MHz and 315-MHz applications. System Block Diagram 1 Li cell Keys Encoder ATARx9x UHF ASK/FSK Remote control transmitter UHF ASK/FSK Remote control receiver U2741B XTO PLL VCO U3741BM Demod Control Antenna Power amp. Block Diagram FSK/ASK CDEM AVCC SENS AGND DGND MIXVCC LNAGND FSK/ASKDemodulator and data filter DEMOD_OUT RSSI Limiter out VS DATA IF Amp Sensitivity reduction 4th Order Polling circuit and control logic ENABLE TEST POUT MODE DVCC LPF 3 MHz Standby logic LFGND IF Amp Ordering Information Extended Type Number U3741BM-P2FL U3741BM-P2FLG3 U3741BM-P3FL U3741BM-P3FLG3 Package Information Package SO20 Dimensions in mm Package SO20 Remarks 2 IF bandwidth of 300 kHz, tube 2 IF bandwidth of 300 kHz, taped and reeled 3 IF bandwidth of 600 kHz, tube 3 IF bandwidth of 600 kHz, taped and reeled technical drawings according to DIN specifications 30 U3741BM U3741BM Put datasheet in a new template. Heading rows at Table “Absolute Maximum Ratings” added. Table “Ordering Information” on page 30 changed. Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel 41 26-426-5555 Fax 41 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel 852 2721-9778 Fax 852 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel 81 3-3523-3551 Fax 81 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel 33 2-40-18-18-18 Fax 33 2-40-18-19-60 ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France Tel 33 4-42-53-60-00 Fax 33 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel 1 719 576-3300 Fax 1 719 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland Tel 44 1355-803-000 Fax 44 1355-242-743 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel 49 71-31-67-0 Fax 49 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel 1 719 576-3300 Fax 1 719 540-1759 Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France Tel 33 4-76-58-30-00 Fax 33 4-76-58-34-80 Literature Requests Disclaimer The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. Atmel Corporation All rights reserved. logo and combinations thereof are registered trademarks, and Everywhere You AreSM are the trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Printed on recycled paper.

PDF Datasheet Preview

• Minimal External Circuitry Requirements, No RF Components on the PC Board Except Matching to the Receiver Antenna
• High Sensitivity, Especially at Low Data Rates
• Sensitivity Reduction Possible Even While Receiving
• Fully Integrated VCO
• Low Power Consumption Due to Configurable Self Polling with a Programmable Time

Frame Check
• Supply Voltage V to V
• Operating Temperature Range -40°C to 105°C
• Single-ended RF Input for Easy Adaptation to λ/4 Antenna or Printed Antenna on PCB
• Low-cost Solution Due to High Integration Level
• ESD Protection According to MIL-STD 883 4KV HBM Except Pin POUT 2KV HBM
• High Image Frequency Suppression due to 1 MHz IF in Conjunction with a SAW

Front-end Filter Up to 40 dB is Thereby Achievable with Newer SAWs.
• Programmable Output Port for Sensitivity Selection or for Controlling External Periphery
• Communication to the Microcontroller Possible via a Single, Bi-directional Data Line
• Power Management Polling is also Possible by Means of a Separate Pin via the

Microcontroller
• 2 Different IF Bandwidth Versions are Available 300 kHz and 600 kHz

UHF ASK Receiver IC

U3741BM

The U3741BM is a multi-chip PLL receiver device supplied in an SO20 package. It has been specially developed for the demands of RF low-cost data transmission systems with low data rates from 1 kBaud to 10 kBaud 1 kBaud to kBaud for FSK in Manchester or Bi-phase code. The receiver is well suited to operate with Atmel's PLL RF transmitter U2741B. Its main applications are in the areas of telemetering, security technology and keyless-entry systems. It can be used in the frequency receiving range of f0 = 300 MHz to 450 MHz for ASK or FSK data transmission. All the statements made below refer to 433.92-MHz and 315-MHz applications.

System Block Diagram
1 Li cell

Keys

Encoder ATARx9x

UHF ASK/FSK Remote control transmitter

UHF ASK/FSK Remote control receiver

U2741B XTO

PLL VCO

U3741BM Demod

Control

Antenna

Power amp.

Block Diagram

FSK/ASK CDEM AVCC SENS

AGND DGND

MIXVCC LNAGND

FSK/ASKDemodulator and data filter

DEMOD_OUT

RSSI

Limiter out

VS DATA

IF Amp

Sensitivity reduction
4th Order

Polling circuit and
control logic

ENABLE TEST POUT MODE DVCC

LPF 3 MHz

Standby logic

LFGND

IF Amp
Ordering Information

Extended Type Number U3741BM-P2FL U3741BM-P2FLG3 U3741BM-P3FL U3741BM-P3FLG3

Package Information

Package SO20

Dimensions in mm

Package SO20

Remarks 2 IF bandwidth of 300 kHz, tube 2 IF bandwidth of 300 kHz, taped and reeled 3 IF bandwidth of 600 kHz, tube 3 IF bandwidth of 600 kHz, taped and reeled
technical drawings according to DIN specifications
30 U3741BM

U3741BM
Put datasheet in a new template. Heading rows at Table “Absolute Maximum Ratings” added. Table “Ordering Information” on page 30 changed.

Atmel Corporation
2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 487-2600

Regional Headquarters

Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel 41 26-426-5555 Fax 41 26-426-5500

Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel 852 2721-9778 Fax 852 2722-1369

Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel 81 3-3523-3551 Fax 81 3-3523-7581

Atmel Operations

Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314

Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314

La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel 33 2-40-18-18-18 Fax 33 2-40-18-19-60

ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France Tel 33 4-42-53-60-00 Fax 33 4-42-53-60-01
1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel 1 719 576-3300 Fax 1 719 540-1759

Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland Tel 44 1355-803-000 Fax 44 1355-242-743

RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel 49 71-31-67-0 Fax 49 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel 1 719 576-3300 Fax 1 719 540-1759

Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom

Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France Tel 33 4-76-58-30-00 Fax 33 4-76-58-34-80

Literature Requests

Disclaimer The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.

Atmel Corporation All rights reserved. logo and combinations thereof are registered trademarks, and Everywhere You AreSM are the trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others.

Printed on recycled paper.

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 U3741BM-P2FL Datasheet file may be downloaded here without warranties.

Datasheet ID: U3741BM-P2FL 519486