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LPC1225FBD48321 Datasheet(PDF) 41 Page - NXP Semiconductors

Part No. LPC1225FBD48321
Description  32-bit ARM Cortex-M0 microcontroller; up to 128 kB flash and 8 kB SRAM
Download  60 Pages
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Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
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LPC1225FBD48321 Datasheet(HTML) 41 Page - NXP Semiconductors

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LPC122X
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Objective data sheet
Rev. 1.1 — 21 February 2011
41 of 60
NXP Semiconductors
LPC122x
32-bit ARM Cortex-M0 microcontroller
10.4 ADC characteristics
[1]
Typical ratings are not guaranteed. The values listed are at room temperature (25
C), nominal supply
voltages.
[2]
Conditions: VSS =0V, VDD(3V3) =3.3 V.
[3]
The ADC is monotonic, there are no missing codes.
[4]
The differential linearity error (ED) is the difference between the actual step width and the ideal step width.
See Figure 17.
[5]
The integral non-linearity (EL(adj)) is the peak difference between the center of the steps of the actual and
the ideal transfer curve after appropriate adjustment of gain and offset errors. See Figure 17.
[6]
The offset error (EO) is the absolute difference between the straight line which fits the actual curve and the
straight line which fits the ideal curve. See Figure 17.
[7]
The gain error (EG) is the relative difference in percent between the straight line fitting the actual transfer
curve after removing offset error, and the straight line which fits the ideal transfer curve. See Figure 17.
[8]
The absolute error (ET) is the maximum difference between the center of the steps of the actual transfer
curve of the non-calibrated ADC and the ideal transfer curve. See Figure 17.
Table 9.
ADC static characteristics
Tamb = 40 C to +85 C unless otherwise specified; ADC frequency 9 MHz, VDD(3V3) = 3.0 V to
3.6 V.
Symbol
Parameter
Conditions
Min
Typ[1]
Max
Unit
VIA
analog input voltage
0
-
VDD(3V3)
V
Cia
analog input capacitance
-
-
1
pF
ED
differential linearity error
[2][3][4] --
 1LSB
EL(adj)
integral non-linearity
[2][5] --
 2.5
LSB
EO
offset error
[2][6] --
 1LSB
EG
gain error
[2][7] --
 3LSB
ET
absolute error
[2][8] --
 3LSB
fc(ADC)
ADC conversion frequency
-
-
257
kHz


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