LPC540xx
NXP Semiconductors
32-bit ARM Cortex-M4 microcontroller
Table 53. ADC sampling times[1]
-40 C Tamb <= 85 C; 1.71 V VDDA 3.6 V; 1.71 V VDD 3.6 V
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
ADC inputs ADC_5 to ADC_0 (fast channels); ADC resolution = 12 bit
[3]
[3]
[3]
[3]
[3]
ts
sampling time
Zo < 0.05 kΩ
20
23
26
31
47
75
-
-
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
0.05 kΩ <= Zo < 0.1 kΩ
0.1 kΩ <= Zo < 0.2 kΩ
0.2 kΩ <= Zo < 0.5 kΩ
0.5 kΩ <= Zo < 1 kΩ
1 kΩ <= Zo < 5 kΩ
ADC inputs ADC_5 to ADC_0 (fast channels); ADC resolution = 10 bit
ts
sampling time
Zo < 0.05 kΩ
15
18
20
24
38
62
-
-
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
0.05 kΩ <= Zo < 0.1 kΩ
0.1 kΩ <= Zo < 0.2 kΩ
0.2 kΩ <= Zo < 0.5 kΩ
0.5 kΩ <= Zo < 1 kΩ
1 kΩ <= Zo < 5 kΩ
ADC inputs ADC_5 to ADC_0 (fast channels); ADC resolution = 8 bit
ts
sampling time
Zo < 0.05 kΩ
12
13
15
19
30
48
-
-
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
0.05 kΩ <= Zo < 0.1 kΩ
0.1 kΩ <= Zo < 0.2 kΩ
0.2 kΩ <= Zo < 0.5 kΩ
0.5 kΩ <= Zo < 1 kΩ
1 kΩ <= Zo < 5 kΩ
ADC inputs ADC_5 to ADC_0 (fast channels); ADC resolution = 6 bit
ts
sampling time
Zo < 0.05 kΩ
9
-
-
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
0.05 kΩ <= Zo < 0.1 kΩ
0.1 kΩ <= Zo < 0.2 kΩ
0.2 kΩ <= Zo < 0.5 kΩ
0.5 kΩ <= Zo < 1 kΩ
1 kΩ <= Zo < 5 kΩ
10
11
13
22
36
ADC inputs ADC_11 to ADC_6 (slow channels); ADC resolution = 12 bit
ts
sampling time
Zo < 0.05 kΩ
43
46
50
56
74
105
-
-
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
0.05 kΩ <= Zo < 0.1 kΩ
0.1 kΩ <= Zo < 0.2 kΩ
0.2 kΩ <= Zo < 0.5 kΩ
0.5 kΩ <= Zo < 1 kΩ
1 kΩ <= Zo < 5 kΩ
LPC540xx
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© NXP Semiconductors N.V. 2018. All rights reserved.
Product data sheet
Rev. 1.8 — 22 June 2018
140 of 168
NXP [ NXP ]
