Rev. 1.00
24
September 11, 2018
Rev. 1.00
25
September 11, 2018
HT45F4050
A/D NFC Flash MCU
HT45F4050
A/D NFC Flash MCU
Comparator Electrical Characteristics
Ta=-40°C~85°C, unless otherwise specified
Symbol
Parameter
Test Conditions
Min.
Typ.
Max. Unit
V
DD
Conditions
V
DD
Operating Voltage
—
—
1.8
—
5.5
V
I
CMP
Additional Current for Comparator
Enable
1.8V
CNVT[1:0]=00B
—
1
5
μA
3V
—
1
5
5V
—
1
5
1.8V
CNVT[1:0]=01B
—
14
30
3V
—
14
30
5V
—
14
30
1.8V
CNVT[1:0]=10B
—
36
65
3V
—
36
65
5V
—
36
65
1.8V
CNVT[1:0]=11B
—
58
110
3V
—
58
110
5V
—
58
110
V
OS
Input Offset Voltage
1.8V Without calibration
(COF[4:0]=10000B),
CNVT[1:0]=00B
-10
—
10
mV
3V
-10
—
10
5V
-10
—
10
1.8V
With calibration,
CNVT[1:0]=00B
(1)
-4
—
4
3V
-4
—
4
5V
-4
—
4
V
CM
Common Mode Voltage Range
1.8V
—
V
SS+
0.3
—
V
DD
-1.0
V
3V
V
SS
—
V
DD
-1.0
5V
V
SS
—
V
DD
-1.0
A
OL
Open Loop Gain
1.8V
CNVT[1:0]=00B
60
—
—
dB
3V
60
—
—
5V
60
80
—
V
HYS
Hysteresis
1.8V
CNVT[1:0]=00B
10
—
30
mV
3V
10
—
30
5V
10
24
30
t
RP
Response Time
(2)
1.8V
With 100mV overdrive,
C
LOAD
=50pF, CNVT[1:0]=00B
—
—
40
μs
3V
—
—
40
μs
5V
—
—
40
μs
1.8V
With 100mV overdrive,
C
LOAD
=50pF, CNVT[1:0]=01B
—
—
3
μs
3V
—
—
3
μs
5V
—
—
3
μs
1.8V
With 100mV overdrive,
C
LOAD
=50pF, CNVT[1:0]=10B
—
—
1.5
μs
3V
—
—
1.5
μs
5V
—
—
1.5
μs
1.8V
With 100mV overdrive,
C
LOAD
=50pF, CNVT[1:0]=11B
—
—
1
μs
3V
—
—
1
μs
5V
—
—
1
μs
Note:
1.
The input offset voltage should first be calibrated when the comparator operates with the compared threshold
voltage level lower than 250mV. Otherwise, the input offset voltage will be out of specification.
2. Load condition: C
LOAD
=50pF
3. All measurement is under C
+
input voltage=(V
DD
-1.4)/2 and remain constant
.