fm34018 Shanghai Fudan Microelectronics Co., Ltd., fm34018 Datasheet
fm34018
Available stocks
Related parts for fm34018
fm34018 Summary of contents
Page 1
... FM34018 Voice Switched Speakerphone Integrated Circuit Specification May. 2008 FM34018 Voice Switched Speakerphone Integrated Circuit Ver 2.1 Specification 1 ...
Page 2
... Shanghai Fudan Microelectronics Co., Ltd name and logo, the “复旦” logo are trademarks or registered trademarks of Shanghai Fudan Microelectronics Co., Ltd or its subsidiaries in China. Shanghai Fudan Microelectronics Co., Ltd, Printed in the China, All Rights Reserved FM34018 Voice Switched Speakerphone Integrated Circuit Ver 2.1 Specification ...
Page 3
... A Chip Select pin allows the chip to be powered down when not in use. A volume control function may be implemented with an external potentiometer. FM34018 applications include speaker phones for household and business use, intercom systems, automotive telephones, and others. ...
Page 4
... RXO 27 RXI 28 RRX FM34018 Voice Switched Speakerphone Integrated Circuit A resistor to ground A resistor to ground determines the nominal gain of the transmit attenuator. The transmit channel gain is inversely proportional to the RTX resistance. Input to the transmit attenuator. Output of the transmit attenuator. Input of the transmit level detector. ...
Page 5
... Application Circuit RECEIVE INPUT C3 M1 0.05 MIC 100K FM34018 Voice Switched Speakerphone Integrated Circuit RANSMIT INPUT C1 683 3. 3.3K 0.1u 683 20K 30k R6 2 91k 47U 24K 28 18k C6 4. 4.7U C17 C19 0.05 C16 ...
Page 6
... Revision History Publication Version date 1.0 Oct. 2000 2.0 Oct. 2007 2.1 May. 2008 FM34018 Voice Switched Speakerphone Integrated Circuit Paragraph or Pages Illustration Sales and service Updated the address of HK office. Ver 2.1 Revise Description Initial Release. Updated Format. Specification 6 ...
Page 7
... Tel: (86-10) 6212 0682 6213 9558 Fax: (86-10) 6212 0681 Shenzhen Office Address: Room.1301, Century Bldg, Shengtingyuan Hotel, Huaqiang Rd (North), Shenzhen City, China. Tel: (86-755) 8335 1011 8335 0911 Fax: (86-755) 8335 9011 Web Site: http://www.fmsh.com/ FM34018 Voice Switched Speakerphone Integrated Circuit Ver 2.1 Specification 7 ...