High Noise Immunity 42 V/70 mAVoltage TrackerTo be Compliant with AEC-Q100 Supply clean power to sensors by excellent PSRRCLIENT’S CONCERNS Ripple should be rejected in power supply to improve sensing accuracy. RICOH’S SOLUTIONS By isolating the power supply for the ECU and for sensor, clean power is supplied to sensor. Because of high PSRR of R1540x series, it is possible to increase sensibility of sensors by supplying clean voltage. Ripple Rejection vs Frequency VIN=14 V, VCE/ADJ =2 V, Ta=25℃ ECUECU is independent from the 120 power supply of the external +B sensor 100 VDD ] VOUT dB 80 VDD Noise preventableLDOpower for sensors due tion [ VDD to its excellent PSRR ec 60 ej VOUT VREF e R R1540 MPU ippl 40 R AD CE/ADJ VDD Iout=1mA OUT 20 Iout=30mA Off-BoardSensor 0 100 1000 10000 100000 1000000 Frequency[Hz] 4 No. EVC-513-190515 Document Outline スライド番号 1 スライド番号 2 スライド番号 3 スライド番号 4