P89LPC9351_1 © NXP B.V. 2008. All rights reserved.
Preliminary data sheet Rev. 01 — 19 November 2008 67 of 74
NXP Semiconductors
P89LPC9351
8-bit microcontroller with 8-bit ADC
12.2 ADC/PGA/temp sensor electrical characteristics
Table 15. ADC/PGA/temp sensor 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
SSA
analog ground voltage
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 - - ±1 LSB
E
L(adj)
integral non-linearity - - ±1 LSB
E
O
offset error - - ±2 LSB
E
G
gain error - - ±1 LSB
E
u(tot)
total unadjusted error - - ±2 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 - 2000 ns
t
ADC
ADC conversion time ADC enabled - - 13T
cy(ADC)
µs
PGA
t
s(PGA)
PGA settling time within accuracy
of ADC
--1 µs
G
PGA
PGA gain G = 1 0.95 1.00 1.05 V/V
G = 2 1.87 1.97 2.07 V/V
G = 4 3.70 3.89 4.08 V/V
G = 8 7.22 7.60 7.98 V/V
G = 16 14.38 15.14 15.90 V/V
t
startup
start-up time - - 2 µs
V
offset(O)(nom)
nominal output offset voltage - 100 - mV
temperature sensor
V
sen
sensor voltage T
amb
= +0 °C - 890 - mV
TC temperature coefficient - 11.3 - mV/°C
