ZADCS146/147

12-Bit, 200ksps, ADC Family

Data Sheet

October 12, 2011

© 2011 Zentrum Mikroelektronik Dresden AG — Rev. 2.0

All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without

the prior written consent of the copyright owner. The information furnished in this publication is PRELIMINARY and subject to

changes without notice.

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List of Figures

Figure 1 Package Pin Assignment for ZADCS146 & ZADCS147 ..............................................................................8

Figure 2: Basic application schematic for ZADCS146..............................................................................................14

Figure 3: Basic application schematic for ZADCS147..............................................................................................14

Figure 4: Input voltage range in unipolar mode........................................................................................................15

Figure 5: Input voltage range for bipolar mode ........................................................................................................15

Figure 6: Block diagram of input multiplexer ............................................................................................................16

Figure 7: Equivalent input circuit during sampling....................................................................................................16

Figure 8: Reference Adjust Circuit............................................................................................................................17

Figure 9: 24-Clock External Clock Mode Timing (f

≤ 3.2MHz)

SCLK

...........................................................................18

Figure 10: Internal Clock Mode Timing with interleaved Control Byte transmission ................................................18

Figure 11: 16-Clock External Clock Mode Conversion.............................................................................................19

Figure 12: 15-Clock External Clock Mode Conversion.............................................................................................19

Figure 13 Detailed Timing Diagram..........................................................................................................................20

Figure 14: Unipolar Transfer Function......................................................................................................................21

Figure 15: Bipolar Transfer Function ........................................................................................................................21

Figure 16: Supply Current versus Sampling Rate ....................................................................................................23

Figure 17: Optimal Power-Supply Grounding System..............................................................................................23

Figure 18: Package Outline Dimensions ..................................................................................................................24