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FM1062A Dataheets PDF



Part Number FM1062A
Manufacturers Fudan
Logo Fudan
Description Low Voltage Transmission Circuits
Datasheet FM1062A DatasheetFM1062A Datasheet (PDF)

FM1062/FM1062A Low Voltage Transmission Circuits with Dialler Interface with EMC Specification May. 2008 FM1062/FM1062A Low voltage transmission circuits with dialler interface Ver2.1 Specification 1 Free Datasheet http://www.Datasheet4U.com INFORMATION IN THIS DOCUMENT IS INTENDED AS A REFERENCE TO ASSIST OUR CUSTOMERS IN THE SELECTION OF SHANGHAI FUDAN MICROELECTRONICS CO., LTD PRODUCT BEST SUITED TO THE CUSTOMER'S APPLICATION; THEY DO NOT CONVEY ANY LICENSE UNDER ANY INTELLECTUAL PROPER.

  FM1062A   FM1062A


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FM1062/FM1062A Low Voltage Transmission Circuits with Dialler Interface with EMC Specification May. 2008 FM1062/FM1062A Low voltage transmission circuits with dialler interface Ver2.1 Specification 1 Free Datasheet http://www.Datasheet4U.com INFORMATION IN THIS DOCUMENT IS INTENDED AS A REFERENCE TO ASSIST OUR CUSTOMERS IN THE SELECTION OF SHANGHAI FUDAN MICROELECTRONICS CO., LTD PRODUCT BEST SUITED TO THE CUSTOMER'S APPLICATION; THEY DO NOT CONVEY ANY LICENSE UNDER ANY INTELLECTUAL PROPERTY RIGHTS, OR ANY OTHER RIGHTS, BELONGING TO SHANGHAI FUDAN MICROELECTRONICS CO., LTD OR A THIRD PARTY. WHEN USING THE INFORMATION CONTAINED IN THIS DOCUMENTS, PLEASE BE SURE TO EVALUATE ALL INFORMATION AS A TOTAL SYSTEM BEFORE MAKING A FINAL DECISION ON THE APPLICABILITY OF THE INFORMATION AND PRODUCTS. SHANGHAI FUDAN MICROELECTRONICS CO., LTD ASSUMES NO RESPONSIBILITY FOR ANY DAMAGE, LIABILITY OR OTHER LOSS RESULTING FROM THE INFORMATION CONTAINED HEREIN. SHANGHAI FUDAN MICROELECTRONICS CO., LTD PRODUCTS ARE NOT INTENDED FOR USE IN MEDICAL, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS. THE PRIOR WRITTEN APPROVAL OF SHANGHAI FUDAN MICROELECTRONICS CO., LTD IS NECESSARY TO REPRINT OR REPRODUCE IN WHOLE OR IN PART THESE DOCUMENTS. Future routine revisions will occur when appropriate, without notice. Contact Shanghai Fudan Microelectronics Co., Ltd sales office to obtain the latest specifications and before placing your product order. Please also pay attention to information published by Shanghai Fudan Microelectronics Co., Ltd by various means, including Shanghai Fudan Microelectronics Co., Ltd home page (http://www.fmsh.com/). Please contact Shanghai Fudan Microelectronics Co., Ltd local sales office for the specification regarding the information in this documents or Shanghai Fudan Microelectronics Co., Ltd products. Trademarks Shanghai Fudan Microelectronics Co., Ltd name and logo, the “” 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. FM1062/FM1062A Low voltage transmission circuits with dialler interface Ver2.1 Specification 2 Free Datasheet http://www.Datasheet4U.com Product Overview Instruction The FM1062 and FM1062A are integrated circuits that perform all speech and line interface functions required in fully electronic telephone sets. They perform electronic switching between dialling and speech. The ICs operate at line voltage down to 1.6 V DC (with reduced performance) to facilitate the use of more telephone sets connected in parallel. FM1062 / FM1062A improve the EMC performance in-circuit which can enhance the telephone sets’ EMC. Features ‹ Low DC line voltage; operates down to 1.6 V (excluding polarity guard) ‹ Voltage regulator with adjustable static resistance ‹ Provides a supply for external circuits ‹ Symmetrical high-impedance inputs (64KΩ) for dynamic, magnetic or piezoelectric microphones ‹ Asymmetrical high-impedance input (32KΩ) for electrets microphones ‹ DTMF signal input with confidence tone ‹ Mute input for pulse or DTMF dialling – FM1062: active HIGH (MUTE) – FM1062A: active LOW (MUTE) ‹ Receiving amplifier for dynamic, magnetic or piezoelectric earpieces ‹ Large gain setting ranges on microphone and earpiece amplifiers ‹ Line loss compensation (line current dependent) for microphone and earpiece amplifiers ‹ Gain control curve adaptable to exchange supply ‹ DC line voltage adjustment facility ‹ enhanced EMC performance FM1062/FM1062A Low voltage transmission circuits with dialler interface Ver2.1 Specification 3 Free Datasheet http://www.Datasheet4U.com Block Diagram Figure 1 Block Diagram FM1062/FM1062A Low voltage transmission circuits with dialler interface Ver2.1 Specification 4 Free Datasheet http://www.Datasheet4U.com Pin Configurations Pin Definitions SYMBOL LN GAS1 GAS2 QR GAR MICMIC+ NC VEE IR DTMF MUTE VCC REG AGC SLPE Note: Pin 12 is active HIGH (MUTE) for FM1062 and LOW (MUTE) for FM1062A. PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DESCRIPTION positive line terminal gain adjustment; transmitting amplifier gain adjustment; transmitting amplifier non-inverting output; receiving amplifier gain adjustment; receiving amplifier inverting microphone input non-inverting microphone input NC negative line terminal receiving amplifier input dual-tone multi-frequency input mute input (see note 1) positive supply decoupling voltage regulator decoupling automatic gain control input slope (DC resistance) adjustment FM1062/FM1062A Low voltage transmission circuits with dialler interface Ver2.1 Specification 5 Free Datasheet http://www.Datasheet4U.com Function Description Supplies VCC, LN, SLPE, REG Power for the IC and its peripheral circuits is usually obtained from the telephone line. The supply voltage is derived from the line via a dropping resistor and regulated by the IC. The supply voltage VCC may also be used.


FM1062 FM1062A RH025015


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