SAM3SD8C Atmel Corporation, SAM3SD8C Datasheet - Page 1095

• Manufacturer Part Number: SAM3SD8C
• Manufacturer: Atmel Corporation

40.7.1.1
11090A–ATARM–10-Feb-12
11090A–ATARM–10-Feb-12
Track and Hold Time versus Source Output Impedance
The following figure gives a simplified acquisition path.
Figure 40-15. Simplified Acquisition Path
During the tracking phase the ADC needs to track the input signal during the tracking time
shown below:
With t
• 10-bit mode: t
• 12-bit mode: t
TRACK
expressed in ns and Z
TRACK
TRACK
Zsource
= 0.042 x Zsource + 160
= 0.054 x Zsource + 205
Input
ADC
SOURCE
expressed in Ohms.
Mux.
Ron
Sample & Hold
Csample
SAM3S8/SD8
SAM3S8/SD8
12-bit
ADC
Core
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