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ST7MC1 Datasheet(PDF) 233 Page - STMicroelectronics |
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ST7MC1 Datasheet(HTML) 233 Page - STMicroelectronics |
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233 / 308 page  ST7MC1/ST7MC2 233/308 OP-AMP MODULE (Cont’d) 10.7.5 Op-Amp Programming The flowchart for Op-Amp operation is shown in Figure 126 Figure 126. Normal Op-Amp Operation Power On Reset OACSR = 0000 0000 Write OACSR = x0010xx0 Wait for Amplifier to wake up (Twakeup) Compensation Offset ? Average Compensation ? Write OACSR = x101 0xx0 Wait for 1536*TCPU cycles Read CMPOVR = 1 Write OACSR = x0p1 pxx0 p : same as before Write OACSR = x111 0xx0 Wait for 24576*TCPU cycles Read CMPOVR = 1 Need closed loop gain > 20dB @ 100kHz ? Write OACSR = x1p1 1xx0 p : same as before Op-Amp useable Re-compensate Offset ? External components always connected No Yes Yes No Yes No No Yes #OFFCMP & AVGCMP should be set simultenaously #The HIGHGAIN bit can also be written in step (1) or (2) (1) (2b) (4) (3) # (2a) |
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