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データシートサーチシステム |
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AM79R70SC データシート(PDF) 17 Page - Advanced Micro Devices |
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AM79R70SC データシート(HTML) 17 Page - Advanced Micro Devices |
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17 / 20 page  SLIC Products 17 APPLICATION CIRCUIT Note: The input should be 50% duty cycle CMOS-compatible input. I. Application Circuit +5 V VNEG VCC RD RD VTX RSN RRX RDC2 RDC1 CDCR RT1 RDC –5 V VBAT1 DET D1 BGND RYOUT1 HPB HPA RTRIP2 RTRIP1 BAT1 VBAT2 VTX VRX B2EN D2 BAT2 A(TIP) B(RING) 0.1 µF RYOUT2 C1 C2 C3 D1 D2 E1 RDCR1 RDCR AGND/ DGND RSLEW CSLEW RINGIN RSGH RSGL RSGL RSGH RRT1 RRT2 CRT 1.5 µF 66 k Ω 12 k Ω 515 k Ω open 50 k Ω 50 k Ω 15 k Ω 150 k Ω 0.33 µF See Note. 250 k Ω 0.1 µF RYE open 125 k Ω 125 k Ω CDC RDCR2 15 k Ω 820 nF CT RT2 10 nF Assumptions: 1. 1.25 CF 2. 25 mA ILOOP 3. 100 mA Ringing Current Limit 4. 5.2 k Ω High Battery Loop Threshold 5. 925 Ω Ringing Loop Threshold 6. 600 Ω Two-wire Impedance, 600 Ω ZL BATTERY GROUND ANALOG GROUND DIGITAL GROUND Bat1 TISP 61089 7. G42L = 1 8. –67 V Vbat1, –24 V Vbat2 CAX = 2.2 nF K1 K1 K2 K2 G RFA = 50 Ω RFB = 50 Ω A A CBX = 2.2 nF CHP 18 nF TIP RING |
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