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LPC178X Datasheet(PDF) 97 Page - NXP Semiconductors

Part # LPC178X
Description  32-bit ARM Cortex-M3 microcontroller; up to 512 kB flash
PDF  120 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

LPC178X Datasheet(HTML) 97 Page - NXP Semiconductors

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LPC178X_7X
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Preliminary data sheet
Rev. 4 — 1 May 2012
97 of 120
NXP Semiconductors
LPC178x/7x
32-bit ARM Cortex-M3 microcontroller
13. DAC electrical characteristics
The values of resistor components Rcmp and Rsw vary with temperature and input voltage and are
process-dependent.
Fig 29. ADC interface to pins ADC0_IN[n]
Table 30.
ADC interface components
Component
Range
Description
Rcmp
90
 to 300 
Switch-on resistance for the comparator input switch. Varies
with temperature, input voltage, and process.
Rsw
500
 to 2 k
Switch-on resistance for channel selection switch. Varies with
temperature, input voltage, and process.
C1
110 fF
Parasitic capacitance from the ADC block level.
C2
80 fF
Parasitic capacitance from the ADC block level.
C3
1.6 pF
Sampling capacitor.
LPC178x/7x
AD0[n]
110 fF
80 fF
Cia
1.6 pF
Rvsi
Rsw
500
Ω - 2 kΩ
Rcmp
90
Ω - 300 Ω
VSS
VEXT
002aag613
ADC
COMPARATOR
BLOCK
C1
C3
C2
Table 31.
10-bit DAC electrical characteristics
VDDA = 2.7 V to 3.6 V; Tamb = 40 C to +85 C unless otherwise specified
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
ED
differential linearity
error
-
1-
LSB
EL(adj)
integral non-linearity
-
1.5
-
LSB
EO
offset error
-
0.6
-
%
EG
gain error
-
0.6
-
%
CL
load capacitance
-
-
200
pF
RL
load resistance
1
-
-
k



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