Datasheet

MPC5674F Microcontroller Data Sheet, Rev. 9
Electrical Characteristics
Freescale Semiconductor38
9 Offset Error without Calibration OFFNC 0
4
100
4
LSB
10 Offset Error with Calibration OFFWC –4
4
4
4
LSB
11 Full Scale Gain Error without Calibration GAINNC –120
4
0
4
LSB
12 Full Scale Gain Error with Calibration GAINWC –4
4,6
4
4,6
LSB
13 Non-Disruptive Input Injection Current
7, 8, 9, 10
I
INJ
–3 3 m
14 Incremental Error due to injection current
11, 12
E
INJ
–4
4
4
4
Counts
15 TUE value at 8 MHz
13, 14
(with calibration) TUE8 –4
4,6
4
4,6
Counts
16 TUE value at 16 MHz
13, 14
(with calibration) TUE16 –8 8 Counts
17 Maximum differential voltage
15
(DANx+ - DANx-) or (DANx- - DANx+)
PREGAIN set to 1X setting
PREGAIN set to 2X setting
PREGAIN set to 4X setting
DIFF
max
DIFF
max2
DIFF
max4
—
—
—
(V
RH
–V
RL
)/2
(V
RH
–V
RL
)/4
(V
RH
-V
RL
)/8
V
V
V
18 Differential input Common mode voltage
15
(DANx- + DANx+)/2
DIFF
cmv
(V
RH
–V
RL
)/2
–5%
(V
RH
–V
RL
)/2
+5%
V
1
Stop mode recovery time is the time from the setting of either of the enable bits in the ADC Control Register to the time that
the ADC is ready to perform conversions. Delay from power up to full accuracy = 8 ms.
2
At V
RH
–V
RL
= 5.12 V, one count = 1.25 mV without using pregain.
3
INL and DNL are tested from V
RL
+ 50 LSB to V
RH
– 50 LSB. The eQADC is guaranteed to be monotonic at 10 bit accuracy
(12 bit resolution selected).
4
New design target. Actual specification will change following characterization. Margin for manufacturing has not been fully
included.
5
At V
RH
–V
RL
= 5.12 V, one LSB = 1.25 mV.
6
The value is valid at 8 MHz, it is ±8 counts at 16 Mhz.
7
Below disruptive current conditions, the channel being stressed has conversion values of $3FF for analog inputs greater than
V
RH
and $000 for values less than V
RL
. Other channels are not affected by non-disruptive conditions.
8
Exceeding limit may cause conversion error on stressed channels and on unstressed channels. Transitions within the limit do
not affect device reliability or cause permanent damage.
9
Input must be current limited to the value specified. To determine the value of the required current-limiting resistor, calculate
resistance values using V
POSCLAMP
=V
DDA
+ 0.5 V and V
NEGCLAMP
= –0.3 V, then use the larger of the calculated values.
10
Condition applies to two adjacent pins at injection limits.
11
Performance expected with production silicon.
12
All channels have same 10 k < Rs < 100 kChannel under test has Rs = 10 k, I
INJ
=I
INJMAX
,I
INJMIN
.
13
The TUE specification is always less than the sum of the INL, DNL, offset, and gain errors due to cancelling errors.
14
TUE does not apply to differential conversions.
15
Voltages between VRL and VRH will not cause damage to the pins. However, they may not be converted accurately if the
differential voltage is above the maximum differential voltage. In addition, conversion errors may occur if the common mode
voltage of the differential signal violates the Differential Input common mode voltage specification.
Table 19. eQADC Conversion Specifications (Operating) (continued)
Spec Characteristic Symbol Min Max Unit