p87lpc778 NXP Semiconductors, p87lpc778 Datasheet - Page 72

• Manufacturer Part Number: p87lpc778
• Description: Cmos Single-chip 8-bit 80c51 Microcontroller 128-byte Data Ram, 8 Kb Otp
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 68:
V
T
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10] A source impedance higher than this driving an A/D input may result in loss of precision and erroneous readings.
9397 750 12378
Product data
Symbol
AV
C
DL
IL
OS
G
A
M
C
-
-
amb
DD
e
IA
t
e
e
CTC
IN
e
e
Conditions: V
The A/D is monotonic, there are no missing codes.
The differential non-linearity (DL
The integral non-linearity (IL
appropriate adjustment of gain and offset errors. See
The offset error (OS
and the straight line which fits the ideal transfer curve. See
The gain error (G
error), and the straight line which fits the ideal transfer curve. Gain error is constant at every point on the transfer curve. See
The absolute voltage error (A
non-calibrated ADC and the ideal transfer curve.
This should be considered when both analog and digital signals are input simultaneously to A/D pins.
Changing the input voltage faster than this may cause erroneous readings.
= 2.7 V to 5.5 V unless otherwise specified.
= 40 C to +85 C for extended industrial, unless otherwise specified.
A/D converter DC electrical characteristics
Parameter
Analog input voltage
Analog input capacitance
Differential non-linearity
Integral non-linearity
Offset error
Gain error
Absolute voltage error
Channel-to-channel matching
Crosstalk between inputs of port
Input slew rate
Input source impedance
SS
= 0 V; V
e
) is the relative difference in percent between the straight line fitting the actual transfer curve (after removing offset
e
[1][6]
) is the absolute difference between the straight line which fits the actual transfer curve (after removing gain error),
[1][5]
DD
= 5.12 V.
e
) is the peak difference between the center of the steps of the actual and the ideal transfer curve after
e
) is the maximum difference between the center of the steps of the actual transfer curve of the
[1][4]
e
) is the difference between the actual step width and the ideal step width. See
[1][7]
[1][2][3]
[8]
Rev. 01 — 31 March 2004
Figure
Conditions
0 to 100 kHz
Figure
28.
28.
Min
V
-
-
-
-
-
-
-
-
-
-
SS
CMOS single-chip 8-bit microcontroller
0.2
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Max
V
15
100
10
1
1
1
0.4
1
1
60
DD
P87LPC778
+ 0.2
Figure
28.
Unit
V
pF
LSB
LSB
LSB
%
LSB
LSB
dB
V/ms
k
Figure
72 of 79
28.