EFM32GG232 Datasheet, PDF (42/71 Pages) Silicon Laboratories – High Performance 32-bit processor

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3.13 Analog Comparator (ACMP)
Table 3.17. ACMP
Symbol
Parameter
Condition
Min
Typ
Max
Unit
V_ACMPIN
V_ACMPCM
Input voltage range
ACMP Common
Mode voltage range
0
V_DD V
0
V_DD V
BIASPROG=0b0000, FULL-
BIAS=0 and HALFBIAS=1 in
ACMPn_CTRL register
0.1
0.6 µA
I_ACMP
Active current
BIASPROG=0b1111, FULL-
BIAS=0 and HALFBIAS=0 in
ACMPn_CTRL register
2.87
12 µA
BIASPROG=0b1111, FULL-
BIAS=1 and HALFBIAS=0 in
ACMPn_CTRL register
250
520 µA
I_ACMPREF
Current consump-
tion of internal volt-
age reference
Internal voltage reference off.
Using external voltage refer-
ence
Internal voltage reference
0
µA
5
µA
V_ACMPOFFSET Offset voltage
BIASPROG= 0b1010, FULL-
-12
0
12 mV
BIAS=0 and HALFBIAS=0 in
ACMPn_CTRL register
V_ACMPHYST
ACMP hysteresis
Programmable
CSRESSEL=0b00 in
ACMPn_INPUTSEL
17
mV
43
kOhm
R_CSRES
Capacitive Sense
Internal Resistance
CSRESSEL=0b01 in
ACMPn_INPUTSEL
CSRESSEL=0b10 in
ACMPn_INPUTSEL
78
kOhm
111
kOhm
CSRESSEL=0b11 in
ACMPn_INPUTSEL
145
kOhm
t_ACMPSTART
Startup time
10 µs
The total ACMP current is the sum of the contributions from the ACMP and its internal voltage reference
as given in Equation 3.1 (p. 42) . I_ACMPREF is zero if an external voltage reference is used.
Total ACMP Active Current
I_ACMPTOTAL = I_ACMP + I_ACMPREF
(3.1)
2016-03-21 - EFM32GG232FXX - d0125_Rev1.40
42
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