C8051F411EK Silicon Laboratories Inc, C8051F411EK Datasheet - Page 58
![KIT EVAL FOR C8051F411](/photos/9/25/92547/c8051f411ek_sml.jpg)
C8051F411EK
Manufacturer Part Number
C8051F411EK
Description
KIT EVAL FOR C8051F411
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F411EK
Contents
Evaluation Board, CD-ROM, USB Cable, Batteries and User Guide
Processor To Be Evaluated
C8051F41x
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F411
Silicon Family Name
C8051F41x
Kit Contents
LCD Based Evaluation Board, USB Cable, Software CD And Quick-Start Guide
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Silicon Laboratories C8051F41x
For Use With
336-1315 - KIT REF DESIGN VOICE RECORD F41X
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1317
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C8051F410/1/2/3
5.3.6. Settling Time Requirements
A minimum tracking time is required before an accurate conversion can be performed. This tracking time is
determined by the AMUX0 resistance, the ADC0 sampling capacitance, any external source resistance,
and the accuracy required for the conversion.
Figure 5.6 shows the equivalent ADC0 input circuit. The required ADC0 settling time for a given settling
accuracy (SA) may be approximated by Equation 5.1. When measuring V
reduces to R
Where:
SA is the settling accuracy, given as a fraction of an LSB (for example, 0.25 to settle within 1/4 LSB)
t is the required settling time in seconds
R
n is the ADC resolution in bits (12).
58
TOTAL
is the sum of the AMUX0 resistance and any external source resistance.
MUX
. See Table 5.3 and Table 5.4 for ADC0 minimum settling time requirements.
Equation 5.1. ADC0 Settling Time Requirements
Figure 5.6. ADC0 Equivalent Input Circuits
Px.x
t
=
ln
RC
MUX Select
Input
------ -
SA
2
n
= R
MUX
Rev. 1.1
R
R
* C
TOTAL
MUX
SAMPLE
= 5
C
k
SAMPLE
C
SAMPLE
DD
= 12 pF
with respect to GND, R
TOTAL
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