PIC16F648A-I Datasheet, PDF (11/34 Pages) Microchip Technology – Push-Pull Output Sub-Microamp Comparators

MCP6541/1R/1U/2/3/4
Note: Unless otherwise indicated, V_DD = +1.6V to +5.5V, V_SS = GND, T_A = 25°C, V_IN+ = V_DD/2, V_IN– = GND,
R_L = 100 kΩ to V_DD/2, and C_L = 36 pF.
50
45
40
100 mV Overdrive
V_CM = V_DD/2
35
30
t_PHL @ V_DD = 1.6V
25
t_PLH @ V_DD = 1.6V
20
15
t_PHL @ V_DD = 5.5V
10
5
t_PLH @ V_DD = 5.5V
0
0 10 20 30 40 50 60 70 80 90
Load Capacitance (nF)
FIGURE 2-31:
Capacitance.
Propagation Delay vs. Load
6.0
5.5
V_DD = 5.5V
5.0
4.5
4.0
3.5
3.0
2.5
2.0
V_OUT
1.5
1.0
0.5
CS
0.0
-0.5
0 1 2 3 4 5 6 7 8 9 10
Time (ms)
FIGURE 2-34:
Chip Select (CS) Step
Response (MCP6543 only).
1.E-10m3
1.1E0-04µ
1.E1-05µ
Comparator
Turns On
Comparator
Shuts Off
1.E-016µ
1.1E0-07n
CS Hysteresis
1.E1-08n
1.E-019n
CS
High-to-Low
CS
Low-to-High
1.1E0-100p _{VDD = 1.6V}
1.E1-101p
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
Chip Select (CS) Voltage (V)
FIGURE 2-32:
Supply Current (shoot
through current) vs. Chip Select (CS) Voltage at
V_DD = 1.6V (MCP6543 only).
30
25
20
V_DD = 1.6V
15
10
Charging output
capacitance
5
1.6
V_OUT
0.0
CS
-1.6
Start-up ^-3.2
I_DD
-4.9
-6.5
0
-8.1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Time (1 ms/div)
FIGURE 2-33:
Supply Current (charging
current) vs. Chip Select (CS) pulse at V_DD = 1.6V
(MCP6543 only).
1.E-10m3
1.E10-004µ
1.E1-005µ
Comparator
Turns On
Comparator
Shuts Off
1.E-016µ
1.E10-007n
1.E1-008n
1.E-019n
CS
Low-to-High
CS
Hysteresis
CS
High-to-Low
1.E10-100p
1.E1-101p
V_DD = 5.5V
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Chip Select (CS) Voltage (V)
FIGURE 2-35:
Supply Current (shoot
through current) vs. Chip Select (CS) Voltage at
V_DD = 5.5V (MCP6543 only).
200
6
180
3
160 ^VOUT
0
140
CS
-3
120
100 _{VDD = 5.5V}
80
60
40
Start-up I_DD
-6
-9
Charging output ^-12
capacitance
-15
-18
20
-21
0
-24
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Time (0.5 ms/div)
FIGURE 2-36:
Supply Current (charging
current) vs. Chip Select (CS) pulse at V_DD = 5.5V
(MCP6543 only).
© 2006 Microchip Technology Inc.
DS21696E-page 11