ADV
ANCEINFORMA
TION
TMS320F28377S, TMS320F28376S, TMS320F28375S, TMS320F28374S
SPRS881A – AUGUST 2014 – REVISED JUNE 2015
5.8.2.1
CMPSS Electrical Data and Timing
Table 5-50. Comparator Electrical Characteristics
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Power-up time
10
µs
Comparator input range
0
V
DDA
V
Offset error
Input referred
–20
20
mV
1x
10
2x
20
Hysteresis
(1)
LSB
3x
30
4x
40
Input step response to ePWM or GPIO
Response time
50
ns
X-BAR (asynchronous)
(1)
Hysteresis will scale with the CMPSS reference voltage.
Table 5-51. Reference DAC Static Electrical Characteristics
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Internal reference
0
V
DDA
DAC output range
V
External reference
0
VDAC
Static offset error
(1)
–25
25
mV
Static gain error
(1)
–2
2
% of FSR
Static DNL
Endpoint corrected
>–1
4
LSB
Static INL
Endpoint corrected
–16
16
LSB
Settling to 1 LSB after full-scale output
Settling time
1
µs
change
Resolution
12
Bits
Error induced by comparator trip or DAC
DAC output disturbance
(2)
code change within the same CMPSS
–100
100
LSB
module
DAC disturbance time
(2)
200
ns
VDAC reference voltage
When VDAC is reference
2.4
2.5 or 3.0
V
DDA
V
VDAC load
When VDAC is reference
6
k
Ω
(1)
Includes comparator input referred errors.
(2)
Disturbance error may be present on the reference DAC output for a certain amount of time after a comparator trip.
108
Specifications
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