P89LPC952_954_4 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 04 — 24 July 2008 61 of 69
NXP Semiconductors
P89LPC952/954
8-bit microcontroller with 10-bit ADC
12.2 ADC electrical characteristics
Table 16. ADC electrical characteristics
V
DD
= 2.4 V to 3.6 V, unless otherwise specified.
T
amb
=
−
40
°
C to +85
°
C for industrial applications, unless otherwise specified.
All limits valid for an external source impedance of less than 10 k
Ω
.
Symbol Parameter Conditions Min Typ Max Unit
V
DDA(ADC)
ADC analog supply voltage V
DD
− 0.4 - V
DD
+ 0.4 V
V
SSA
analog ground voltage V
SS
− 0.4 - V
SS
+ 0.4 V
V
VREFP
voltage on pin VREFP V
DD
− 0.4 - V
DD
+ 0.4 V
V
VREFN
voltage on pin VREFN V
SS
− 0.4 - V
SS
+ 0.4 V
V
IA
analog input voltage V
SS
− 0.4 - V
DD
+ 0.4 V
C
ia
analog input capacitance - - 15 pF
E
D
differential linearity error - - ±1 LSB
E
L(adj)
integral non-linearity - - ±2 LSB
E
O
offset error - - ±2 LSB
E
G
gain error - - ±2 LSB
E
u(tot)
total unadjusted error - - +4/−3 LSB
M
CTC
channel-to-channel matching - - ±1 LSB
α
ct(port)
crosstalk between port inputs 0 kHz to 100 kHz - - −60 dB
SR
in
input slew rate - - 100 V/ms
T
cy(ADC)
ADC clock cycle time 111 - 3125 ns
t
ADC
ADC conversion time ADC enabled - - 36T
cy(ADC)
µs
