XMC4500_16 Datasheet, PDF (52/123 Pages) Infineon Technologies AG – Microcontroller Series for Industrial Applications

XMC4500
XMC4000 Family
Electrical Parameters
IOZ1
500 nA
Single ADC Input
200 nA
100 nA
-100 nA
3%
97%
-500 nA
Figure 16 VADC Analog Input Leakage Current
VIN [% VDDA]
100%
A DC- Leak age.v s d
Conversion Time
Table 24
Parameter
Conversion
time
Conversion Time (Operating Conditions apply)
Symbol Values
Unit Note
t_C CC 2 × T_ADC +
μs N = 8, 10, 12 for
(2 + N + STC + PC +DM) × T_ADCI
N-bit conversion
T_ADC = 1 / f_PERIPH
T_ADCI = 1 / f_ADCI
• STC defines additional clock cycles to extend the sample time
• PC adds two cycles if post-calibration is enabled
• DM adds one cycle for an extended conversion time of the MSB
Conversion Time Examples
System assumptions:
f_ADC = 120 MHz i.e. t_ADC = 8.33 ns, DIVA = 3, f_ADCI = 30 MHz i.e. t_ADCI = 33.3 ns
According to the given formulas the following minimum conversion times can be
achieved (STC = 0, DM = 0):
12-bit post-calibrated conversion (PC = 2):
t_CN12C = (2 + 12 + 2) × t_ADCI + 2 × t_ADC = 16 × 33.3 ns + 2 × 8.33 ns = 550 ns
12-bit uncalibrated conversion:
t_CN12 = (2 + 12) × t_ADCI + 2 × t_ADC = 14 × 33.3 ns + 2 × 8.33 ns = 483 ns
10-bit uncalibrated conversion:
t_CN10 = (2 + 10) × t_ADCI + 2 × t_ADC = 12 × 33.3 ns + 2 × 8.33 ns = 417 ns
8-bit uncalibrated:
t_CN8 = (2 + 8) × t_ADCI + 2 × t_ADC = 10 × 33.3 ns + 2 × 8.33 ns = 350 ns
Data Sheet
52
V1.4, 2016-01
Subject to Agreement on the Use of Product Information