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| Features * 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 * Loop-push-pull Stage for AM/FM * High Signal/Noise Ratio AM/FM PLL with 1 Switch Description The U4289BM 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. U4289BM Figure 1. Block Diagram 14 Oscillator OSCOUT SCL SDA AS 15 2 3 4 Phase detector I2C bus interface Current sources 9 10 N-divider 1 VDD 16 GND1 12 13 PDAMO VA R-divider Switching output OSCIN 5 11 SWO1 PDAM FMOSC 6 PDFMO AMOSC 8 AM/FM switch 7 GND2 PDFM Rev. 4757A-AUDR-10/03 Pin Configuration Figure 2. Pinning SO16 VDD SCL SDA AS SWO1 FMOSC GND 2 AMOSC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 GND1 OSCOUT OSCIN VA PDAMO PDAM PDFMO PDFM Pin Description Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol VDD SCL SDA AS SWO1 FMOSC GND2 AMOSC PDFM PDFMO PDAM PDAMO VA OSCIN OSCOUT GND1 Function Supply voltage Bus clock Bus data Address selection Switching output FM oscillator input Ground 2 (analog) AM oscillator input FM current output FM analog output AM current output AM analog output Analog supply voltage Oscillator input Oscillator output Ground 1 (digital) 2 U4289BM 4757A-AUDR-10/03 U4289BM Functional Description The U4289BM is controlled via the 2-wire bus. One module address byte, two subaddress bytes and five data bytes enable programming. The module address contains a programmable address bit A 1, which (along with address select input AS, pin 4), enables the operation of two U4289BM devices in one system. If bit A 1 is identical with the status of the address select input AS, the chip is selected. The subaddress determines which of the data bytes is transmitted first. If the subaddress of the R-divider is transmitted, the sequence of the next data bytes is DB 0 (Status), DB 1 and DB 2. If the subaddress of the N-divider is transmitted, the sequence of the next data bytes is DB 3 and DB 4. The bit organization of the module address, subaddress and 5 data bytes is shown in table "Bit Organization" on page 7. Each transmission on the bus begins with the "START" condition and has to be ended by the "STOP" condition (see table "Transmission Protocol" on page 7). The integrated circuit U4289BM has two separate inputs for the AM and FM oscillators. Pre-amplified AM and FM signals are fed to the 16-bit R-divider via the AM/FM switch. The AM/FM switch is software controlled. Tuning steps can be selected by the 16-bit R-divider. Furthermore, the device provides a digital memory phase detector and two separate current sources for AM and FM amplifier (charge pump) as given in the Table "Electrical Characteristics" on page 4. It allows independent gain adjustment, providing high current for high-speed tuning and low current for stable tuning. Absolute Maximum Ratings Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Supply voltage Input voltage Output current Output drain voltage Analog supply voltage with 220 serial resistance 2 minutes(1) Output current Ambient temperature range Storage temperature range Junction temperature Electrostatic handling (modified MIL STD 883 D method 3015.7: all supply pins connected together) Note: 1. Corresponding to the application circuit (Figure 8 on page 8) Pins 1 2, 3, 4, 6, 8, 14, 15 3, 5 5 13 9, 12 Symbol VDD VI IO VOD VA VA IAO Tamb Tstg Tj VESD Value -0.3 to +6 -0.3 to VDD +0.3 -1 to +5 15 6 to 15 24 -1 to +20 -30 to +85 -40 to +125 125 1000 Unit V V mA V V V mA C C C V Thermal Resistance Parameters Junction ambient Symbol RthJA Value 160 Unit K/W 3 4757A-AUDR-10/03 Electrical Characteristics VDD = 5 V, VA = 10 V, Tamb = 25 C, unless otherwise specified Parameters Supply voltage Quiescent supply current FM input sensitivity, RG = 50 , FMOSC AM input sensitivity, RG = 50 , AMOSC Oscillator input sensitivity, RG = 50 , OSCIN Phase Detector PDFM Output current 1 Output current 2 Leakage current Phase Detector PDAM Output current 1 Output current 2 Leakage current Analog Output PDFMO, PDAMO Saturation voltage LOW Saturation voltage HIGH Bus SCL, SDA, AS Input voltage HIGH Input voltage LOW Output voltage acknowledge LOW Clock frequency Rise time SDA, SCL Fall time SDA, SCL Period of SCL HIGH Period of SCL LOW ISDA = 3 mA 2, 3, 4 2, 3, 4 3 2 2, 3 2, 3 2 2 ViBUS ViBUS VO fSCL tr tf tH tL 4.0 4.7 3.0 0 VDD 1.5 0.4 100 1 300 V V V kHz s ns s s I = 15 mA I = 15 mA 9, 12 9, 12 VsatL VsatH 9.5 200 9.95 400 mW V 11 11 11 IPDAM IPDAM IPDAML 160 40 200 50 240 60 20 A A A 10 10 10 IPDFM IPDFM IPDFML 1600 400 2000 500 2400 600 20 A A nA AM mode/FM mode fi = 70 to 120 MHz fi = 160 MHz fi = 0.6 to 35 MHz fi = 0.1 to 15 MHz Test Conditions Pins 1 1 6 6 8 14 Symbol VDD IDD VSFM VSFM VSAM VSOSC 40 150 40 100 Min. 4.5 Typ. 5.0 4.0 Max. 5.5 7.0 Unit V mA mVrms mVrms mVrms mVrms 4 U4289BM 4757A-AUDR-10/03 U4289BM Electrical Characteristics (Continued) VDD = 5 V, VA = 10 V, Tamb = 25 C, unless otherwise specified Parameters Set-up Time Start condition Data Stop condition Time space(1) Hold Time Start condition DATA Note: thSTA thDAT 4.0 0 s s tsSTA tsDAT tsSTOP twSTA 4.7 250 4.7 4.7 s s s s Test Conditions Pins Symbol Min. Typ. Max. Unit 1. This is a period of time where the bus must be free from data transmission before a new transmission can be started. Figure 3. FM Input Sensitivity, Tamb = +85 C 14.0 12.0 10.0 T = 85C V SFM (mA) 8.0 6.0 4.0 2.0 0.0 20.0 VDD = 5.5 V 5.0 V 4.5 V 60.0 100.0 fiFM (MHz) Figure 4. FM Input Sensitivity, Tamb = -30 C 14.0 12.0 10.0 T = -30C VSFM (mA) 8.0 6.0 4.0 2.0 0.0 20.0 VDD = 5.5 V 5.0 V 4.5 V 60.0 100.0 fiFM (MHz) 5 4757A-AUDR-10/03 Figure 5. AM Input Sensitivity, Tamb = +85 C 100.0 T = 85C VDD = 5.5 V 5.0 V 4.5 V 10.0 fSYSCLK (kHz) 1.0 0 1 VDD (V) 10 100 Figure 6. AM Input Sensitivity, Tamb = -30 C 100.0 T = -30C VDD = 5.5 V 5.0 V 4.5 V 10.0 fSYSCLK (kHz) 1.0 0 1 VDD (V) 10 100 Figure 7. Bus Timing SDA tr tf thSTA twSTA SCL P S t hSTA tL thDAT P = Stop, S = Start tH tsSTA thDAT t sSTOP P 6 U4289BM 4757A-AUDR-10/03 U4289BM Bit Organization MSB Module address Subaddress (R-divider) Subaddress (N-divider) Data byte 0 (Status) Data byte 1 Data byte 2 Data byte 3 Data byte 4 1 A7 X X SWO1 D7 2 15 LSB 1 A6 X X D6 0 A5 X X D5 0 A4 0 X D4 R-divider R-divider N-divider N-divider 1 A3 0 1 AM/FM D3 0 A2 1 1 PD - ANA D2 0/1 A1 X X PD - POL D1 0 A0 X X PD - CUR D0 28 20 28 20 27 215 2 7 Table 1. Function Mode Bit Description D3 D2 D1 D0 Mode AM/FM PD - ANA PD - POL PD - CUR LOW FM operation PD analog Negative polarity Output current 2 HIGH AM operation TEST Positive polarity Output current 1 Transmission Protocol MSB S A0 Address A7 LSB A Subaddress R-divider A Data 0 A Data 1 A Data 2 A P MSB S A0 Note: Address LSB A A7 Subaddress N-divider A Data 3 A Data 4 A P S = Start, P = Stop, A = Acknowledge 7 4757A-AUDR-10/03 Figure 8. Application Circuit 6 to 15 V 110 100 F 16 V 110 3 k C6*) C1*) 27 pF 4 MHz 16 15 14 13 12 11 27 pF R2*) R1*) C2*) 10 C5*) FMOSC 9 C3 100 nF U4289BM 1 100 F 6.3 V 27 5V 2 3 4 5 6 7 8 C4 1 nF 12k 12k 2.2 nF AMOSC 100 nF *) Values depend on the step frequency and used varicaps Recommendations for Applications * * * * C3 = 100 nF should be very close to pin 1 (VDD) and pin 16 (GND 1) GND2 (pin 7, analog ground) and GND1 (pin 16, digital around) must be connected according to Figure 8 4 MHz crystal must be very close to pin 14 and pin 15 Components of the charge pump (C1/R1 for AM and C2/R2 for FM) should be very close to pin 11 with respect to pin 10. Figure 9. PCB Layout GND C1 C2 16 15 14 13 12 11 10 9 C4 V DD C3 1 2 3 4 5 6 7 8 8 U4289BM 4757A-AUDR-10/03 U4289BM Ordering Information Extended Type Number U4289BM-MFP U4289BM-MFPG3 Package SO16 plastic SO16 plastic Remarks - Taping according to IEC-286-3 Package Information Package SO16 Dimensions in mm 10.0 9.85 5.2 4.8 3.7 1.4 0.4 1.27 8.89 16 9 0.25 0.10 0.2 3.8 6.15 5.85 technical drawings according to DIN specifications 1 8 9 4757A-AUDR-10/03 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 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 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 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 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 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 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 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 Literature Requests www.atmel.com/literature 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. (c) Atmel Corporation 2003. All rights reserved. Atmel (R) 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. 4757A-AUDR-10/03 |
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