LPC1857_53 NXP Semiconductors, LPC1857_53 Datasheet - Page 111

• Manufacturer Part Number: LPC1857_53
• Description: The LPC1857/53 are ARM Cortex-M3 based microcontrollers for embedded applications
• Manufacturer: NXP Semiconductors

NXP Semiconductors
12. ADC/DAC electrical characteristics
Table 22.
V
[1]
[2]
[3]
[5]
[7]
[8]
LPC1857_53
Objective data sheet
[4]
[6]
Symbol Parameter
V
C
E
E
E
E
E
R
R
f
f
clk(ADC)
c(ADC)
DDA(3V3)
IA
D
L(adj)
O
G
T
ia
vsi
i
The ADC is monotonic, there are no missing codes.
The differential linearity error (E
The integral non-linearity (E
appropriate adjustment of gain and offset errors. See
The offset error (E
ideal curve. See
The gain error (E
error, and the straight line which fits the ideal transfer curve. See
The absolute error (E
ADC and the ideal transfer curve. See
T
Input resistance R
amb
= 25 C; maximum sampling frequency f
over specified ranges; T
analog input voltage
analog input capacitance
differential linearity error
integral non-linearity
offset error
gain error
absolute error
voltage source interface
resistance
input resistance
ADC clock frequency
ADC conversion frequency 10-bit resolution; 11 clock
ADC characteristics
Figure
G
i
O
) is the relative difference in percent between the straight line fitting the actual transfer curve after removing offset
depends on the sampling frequency fs: R
) is the absolute difference between the straight line which fits the actual curve and the straight line which fits the
T
) is the maximum difference between the center of the steps of the actual transfer curve of the non-calibrated
32.
L(adj)
D
) is the peak difference between the center of the steps of the actual and the ideal transfer curve after
) is the difference between the actual step width and the ideal step width. See
amb
=
Conditions
2.7 V  V
2.2 V  V
2.7 V  V
2.2 V  V
2.7 V  V
2.2 V  V
2.7 V  V
2.2 V  V
2.7 V  V
2.2 V  V
cycles
2-bit resolution; 3 clock
cycles
Figure

40
All information provided in this document is subject to legal disclaimers.

s
C to +85
32.
= 4.5 MHz and analog input capacitance C
DDA(3V3)
DDA(3V3)
DDA(3V3)
DDA(3V3)
DDA(3V3)
DDA(3V3)
DDA(3V3)
DDA(3V3)
DDA(3V3)
DDA(3V3)
Rev. 1 — 14 December 2011
Figure

C; ADC frequency 4.5 MHz; unless otherwise specified.
 3.6 V
< 2.7 V
 3.6 V
< 2.7 V
 3.6 V
< 2.7 V
 3.6 V
< 2.7 V
 3.6 V
< 2.7 V
i
32.
= 1 / (f
Figure
s
 C
32.
ia
[1][2]
[7][8]
).
[3]
[4]
[5]
[6]
Min
2.2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
32-bit ARM Cortex-M3 microcontroller
ia
Typ
3.3
-
0.8
1.0
0.8
1.5
0.15
0.15
0.3
0.35
3
4
-
-
-
-
= 2 pF.
LPC1857/53
Max
V
2
-
-
-
-
-
-
-
-
-
-
<tbd>
<tbd>
4.5
400
1.5
DDA(3V3)
Figure
© NXP B.V. 2011. All rights reserved.
32.
Unit
V
pF
LSB
LSB
LSB
LSB
LSB
LSB
%
%
LSB
LSB
k
M
MHz
kSamples/s
MSamples/s
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