U4285BM-MFS
U4285BM-MFS Datasheet
The U4285BM is an integrated circuit in BICMOS technology for frequency synthesizers. It performs all the functions of a PLL radio tuning system and is controlled by a 2-wire bus. The device is designed for all frequency synthesizer applications in radio receivers, as well as for RDS Radio Data System applications.
| Part | Datasheet |
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U4285BM-MFS |
U4285BM-MFS (pdf) |
| Related Parts | Information |
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U4285BM-MFSG3 |
U4285BM-MFSG3 |
| PDF Datasheet Preview |
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| • Reference Oscillator up to 15 MHz • Two Programmable 16-bit Dividers Adjustable from 2 to 65535 • Fine Tuning Steps AM 1 kHz FM 2 kHz • Four Programmable Switching Outputs Open Drain up to 15 V • Integrated Loop-push-pull Stage for AM/FM • High Signal/Noise Ratio AM/FM PLL with 4 Switches The U4285BM is an integrated circuit in BICMOS technology for frequency synthesizers. It performs all the functions of a PLL radio tuning system and is controlled by a 2-wire bus. The device is designed for all frequency synthesizer applications in radio receivers, as well as for RDS Radio Data System applications. U4285BM Figure Block Diagram OSCIN 18 OSCOUT 19 SCL 2 SDA 3 AS 4 Oscillator Bus interface FMOSC 9 AMOSC 11 AM/FM switch 10 GND2 R-divider SWO1 SWO2 SWO3 SWO4 Switching outputs Phase detector Current sources N-divider 1 VDD 20 GND1 14 PDAM 15 PDAMO 16 VA 17 PDFMO 13 PDFM Pin Configuration Figure Pinning SSO20 VDD 1 SCL 2 20 GND1 19 OSCOUT SDA 3 18 OSCIN SWO1 5 16 VA U4285BM SWO2 6 15 PDAMO SWO3 7 14 PDAM SWO4 8 Ordering Information Extended Type Number U4285BM-MFS U4285BM-MFSG3 Package SSO20 plastic SSO20 plastic Remarks Taping according to IEC-286-3 Package Information Package SSO20 Dimensions in mm technical drawings according to DIN specifications 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 Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. Atmel Corporation All rights reserved. and combinations thereof are the registered trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be the trademarks of others. Printed on recycled paper. |
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