P89LPC92X1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 2.1 — 27 August 2012 66 of 75
NXP Semiconductors
P89LPC9201/9211/922A1/9241/9251
8-bit microcontroller with 8-bit ADC
12.2 ADC/temperature sensor electrical characteristics
Table 18. ADC/temperature sensor electrical characteristics
V
DD
= 2.4 V to 3.6 V, unless otherwise specified.
T
amb
=
40
Cto+85
C for industrial applications, unless otherwise specified.
All limits valid for an external source impedance of less than 10 k
.
Symbol Parameter Conditions Min Typ Max Unit
V
DDA(ADC)
ADC analog supply voltage V
V
SSA
analog ground voltage V
V
IA
analog input voltage V
SS
0.2 - V
DD
+0.2 V
C
ia
analog input capacitance - - 15 pF
E
D
differential linearity error - - 1LSB
E
L(adj)
integral non-linearity - - 1LSB
E
O
offset error - - 2LSB
E
G
gain error - - 1%
E
u(tot)
total unadjusted error - - 2LSB
M
CTC
channel-to-channel matching - - 1LSB
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 - 2000 ns
t
ADC
ADC conversion time ADC enabled - - 13T
cy(ADC)
s
Temperature sensor
V
sen
sensor voltage T
amb
= +0 C-890- mV
TC temperature coefficient - 11.3 - mV/C
t
startup
start-up time - 200 - s
Fig 35. ADC conversion timing
adc_clk
serial_data_out
D7
D6 D5
D4
D3
D2
D1
D0
12345678910111213
clk
ADCDATA_REG
ADCDATA
002aae371
start trigger
