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MICROCHIP |
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2 page
TC3404 DS21413C-page 2 © 2005 Microchip Technology Inc. Typical Application Functional Block Diagram TC3404 μ Controller SDAT SCLK A0 PFO PFI REFOUT REFIN IN3- IN4+ IN4- IN3+ IN2+ IN1+ I/01 I/02 I/03 I/05 I/06 A1 I/04 V BATT V BATT C1 0.1 μF R3 390 ±10% C2 10 μF R4 1M Ω ±10% V DD V BATT R7 100k V CC Input 1 Input 2 Input 3 Input 4 A0 TC3404 IN2 IN3+ SDAT REFIN REFOUT SCLK Clock Generator and Control Circuitry Data Shift Reg. Σ – D Modulator 1 of 4 AMux + – + – x2 DQ SET CLR 1.193V VDD Start Conv. DQ SET CLR A1 IN1 + – IN4+ + – PFO PFI + – 1.205V IN3- IN4- GND |
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