Datasheet

LPC1759_58_56_54_52_51 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 8.5 — 24 June 2014 63 of 80
NXP Semiconductors
LPC1759/58/56/54/52/51
32-bit ARM Cortex-M3 microcontroller
14. DAC electrical characteristics (LPC1759/58/56/54 only)
The values of resistor components R
i1
and R
i2
vary with temperature and input voltage and are
process-dependent (see Table 20
).
Parasitic resistance and capacitance from the pad are not included in this figure.
Fig 27. ADC interface to pins AD0[n]
Table 20. ADC interface components
Component Range Description
R
i1
2 k to 5.2 k Switch-on resistance for channel selection switch. Varies with
temperature, input voltage, and process.
R
i2
100  to 600  Switch-on resistance for the comparator input switch. Varies
with temperature, input voltage, and process.
C1 750 fF Parasitic capacitance from the ADC block level.
C2 65 fF Parasitic capacitance from the ADC block level.
C3 2.2 pF Sampling capacitor.
LPC17xx
AD0[n]
750 fF
65 fF
C
ia
2.2 pF
R
vsi
R
i2
100 Ω - 600 Ω
R
i1
2 kΩ - 5.2 kΩ
V
SS
V
EXT
002aaf197
ADC
COMPARATOR
BLOCK
C1
C3
C2
Table 21. DAC electrical characteristics
V
DDA
= 2.7 V to 3.6 V; T
amb
=  40  C to +85  C unless otherwise specified
Symbol Parameter Conditions Min Typ Max Unit
E
D
differential linearity error - 1- LSB
E
L(adj)
integral non-linearity - 1.5 - LSB
E
O
offset error - 0.6 - %
E
G
gain error - 0.6 - %
C
L
load capacitance - 200 - pF
R
L
load resistance 1 - - k