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MC34018L-R28-R 데이터시트(PDF) 7 Page - Unisonic Technologies |
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MC34018L-R28-R 데이터시트(HTML) 7 Page - Unisonic Technologies |
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7 / 8 page ![]() MC34018 LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 7 of 8 www.unisonic.com.tw QW-R108-006,C TEST CIRCUIT VB VB VB VB VB 19 26 28 27 4 1 2 3 25 21 8 7 6 5 9 10 13 12 11 23 18 16 20 22 17 15 14 24 VB regulator Attenuator control RECEIVE/TRANSMIT COMP transmit attenuator receive attenuator Speaker amp peak limiter VCC regulator transmit detector comp Vth (36mV) RECEIVE AMP TRANSMIT LOG AMP MIC AMP Vcc Vcc RLO VB VLC ACF TXI RR TXO RRX RXI RTX RXO SKI SKG SKO AGC GND Vcc 5.4V V+ CS XDC CP1 CP2 XDI MCO MCI TLI TLO RTI 25 4.3k 18k 30k 47 F 0.05 F 0.01 F 0.1 F 0.1 F 4.7 F 47 F 1.0 F Vcc 2.2M VB 0.068 F 4.7k 0.068 F 3.3k 2k 0.1 F 0.05 F 0.068 F 4.7k 4.7 F47 F 1000 F 47 F 1.0 F Vcc 12k 59k 33k 56k 500 500 DC line input Receive input MIC TRANSMIT OUTPUT 2.6k VB Fig 1 Test circuit BASIC LINE POWERED SPEAKERPHONE Fig 2 |
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