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L6726G-S18-R 데이터시트(PDF) 1 Page - Unisonic Technologies |
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1 / 13 page UNISONIC TECHNOLOGIES CO., LTD L6726 LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 13 Copyright © 2014 Unisonic Technologies Co., Ltd QW-R108-015.D UNIVERSAL SPEECH CIRCUIT DESCRIPTION The UTC L6726 is a mask-programmable, monolithic integrated speech circuits for using in electronic telephones. It is designed for using with a low impedance microphone. Transmitting and receiving gain are regulated with line length. Different regulation for various current feeds can be set by external resistors. Typical current feeds as 48V 2·200Ω, 48V, 2·400Ω, and 36V, 2·500Ω, can be handled. Application dependent parameters such as line balance, side tone level, amplification and frequency response are set by external components. Parameters are set independently which means easy adaptation for various market needs. The UTC L6726 is developed for using with CMOS-type dialer ICs. A separate DTMF input is switched when the circuit is muted, and an adjustable DC supply is provided for feeding an external CMOS device. FEATURES *Minimum number of inexpensive external components, 5 capacitors and 11 resistors. *Mute function for operation with DTMF-generator. *Transmit and receive gain regulation for automatic loop loss compensation. *Extended current and voltage range 5~130mA, down to 2V. *Differential microphone input for good balance to ground. *Balanced receiver output stage. *Short start-up time. *Stabilized DC-supply for low current CMOS dialers and/or electret microphones. *DTMF-input controlled by mute. ORDERING INFORMATION Ordering Number Package Packing L6726G-D18-T DIP-18 Tube L6726G-S18-R SOP-18 Tape Reel L6726G-S18-T SOP-18 Tube |
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