M
Features
•
•
•
•
•
•
•
•
•
•
•
Low Quiescent Current: 600 nA/comparator (typ.)
Rail-to-Rail Input: V
SS
- 0.3V to V
DD
+ 0.3V
Open-Drain Output: V
OUT
≤10V
Propagation Delay 4 µs (typ.)
Wide Supply Voltage Range: 1.6V to 5.5V
Single available in SOT-23-5, SC-70-5 packages
Available in Single, Dual and Quad
Chip Select (CS) with MCP6548
Low Switching Current
Internal Hysteresis: 3.3 mV (typ.)
Industrial Temperature: -40°C to +85°C
MCP6546/7/8/9
Description
The Microchip Technology Inc. MCP6546/7/8/9 family
of comparators is offered in single (MCP6546), single
with chip select (MCP6548), dual (MCP6547) and quad
(MCP6549) configurations. The outputs are open-drain
and are capable of driving heavy DC or capacitive
loads.
These comparators are optimized for low power,
single-supply application with greater than rail-to-rail
input operation. The output limits supply current surges
and dynamic power consumption while switching. The
open-drain output of the MCP6546/7/8/9 family can be
used as a level-shifter for up to 10V using a pull-up
resistor. It can also be used as a wired-OR logic. The
internal Input hysteresis eliminates output switching
due to internal noise voltage, reducing current draw.
These comparators operate with a single-supply
voltage as low as 1.6V and draw less than 1 µA/
comparator of quiescent current.
The related MCP6541/2/3/4 family of comparators from
Microchip has a push-pull output that supports rail-to-
rail output swing and interfaces with CMOS/TTL logic.
Open-Drain Output Sub-Microamp Comparators
Typical Applications
•
•
•
•
•
•
•
•
Laptop Computers
Mobile Phones
Metering Systems
Hand-held Electronics
RC Timers
Alarm and Monitoring Circuits
Windowed Comparators
Multi-vibrators
Related Devices
• CMOS/TTL-Compatible Output: MCP6541/2/3/4
Package Types
MCP6546
PDIP, SOIC, MSOP
NC
V
IN
–
V
IN
+
V
SS
1
2
3
4
-
+
MCP6546-R
SOT-23-5
OUT
1
V
DD
2
V
IN
+
3
5
V
SS
-
+
MCP6547
PDIP, SOIC, MSOP
1
2
3
4
- +
+ -
MCP6549
PDIP, SOIC, TSSOP
OUTA
1
14
OUTD
- + + -
13
V
IND
–
8
NC
7
V
DD
6
OUT
5
NC
OUTA
V
INA
–
4
V
IN
– V
INA
+
V
SS
8
V
DD
7
OUTB V
INA
–
2
6
V
INB
– V
INA
+
3
V
DD
4
5
V
INB
+
12
V
IND
+
11
V
SS
10
V
INC
+
- + + -
9
V
INC
–
8
OUTC
MCP6546
SOT-23-5, SC-70-5
OUT
1
V
SS
2
V
IN
+
3
5 V
DD
-
+
MCP6548
PDIP, SOIC, MSOP
NC
V
IN
–
V
IN
+
V
SS
1
2
3
4
-
+
V
INB
+
5
V
INB
–
6
OUTB
7
8
CS
7
V
DD
6
OUT
5
NC
4
V
IN
–
2003 Microchip Technology Inc.
DS21714C-page 1
MCP6546/7/8/9
1.0
1.1
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
V
DD
- V
SS
..............................................................7.0V
Open-Drain output..................................... V
SS
+10.5V
All inputs and outputs ........... V
SS
–0.3V to V
DD
+0.3V
Difference Input voltage ............................ |V
DD
- V
SS
|
Output Short-Circuit Current .......................continuous
Current at Input Pins .........................................±2 mA
Current at Output and Supply Pins .................. ±30 mA
Storage temperature .......................... -65°C to +150°C
Maximum Junction Temperature (T
J
) ............... +150°C
ESD protection on all pins (HBM;MM)..........4 kV;200V
† Notice:
Stresses above those listed under “Maximum Rat-
ings” may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied. Expo-
sure to maximum rating conditions for extended periods may
affect device reliability.
PIN FUNCTION TABLE
NAME
FUNCTION
V
IN
+, V
INA
+, V
INB
+, V
INC
+, V
IND
+ Non-Inverting Inputs
V
IN
–, V
INA
–, V
INB
–, V
INC
–, V
IND
– Inverting Inputs
V
DD
V
SS
OUT, OUTA, OUTB, OUTC,
OUTD
CS
NC
Positive Power Supply
Negative Power Supply
Outputs
Chip Select
Not Connected
DC CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated, V
DD
= +1.6V to +5.5V, V
SS
= GND, T
A
= 25°C, V
IN
+ = V
DD
/2, V
IN
– = V
SS
,
R
PU
= 2.74 kΩ to V
PU
= V
DD
(Refer to Figure 1-3).
Parameters
Power Supply
Supply Voltage
Quiescent Current per comparator
Input
Input Voltage Range
Common Mode Rejection Ratio
Common Mode Rejection Ratio
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Offset Voltage
Sym
V
DD
I
Q
V
CMR
CMRR
CMRR
CMRR
PSRR
V
OS
∆V
OS
/∆T
A
V
HYST
∆V
HYST
/∆T
A
∆V
HYST
/∆T
A
I
B
I
B
I
OS
Z
CM
Z
DIFF
V
PU
I
OH
V
OL
I
SC
C
OUT
Min
1.6
0.3
V
SS
−
0.3
55
50
55
63
-7.0
—
1.5
—
—
—
—
—
—
—
V
DD
-100
V
SS
—
—
Typ
—
0.6
—
70
65
70
80
±1.5
±3
3.3
10
5
1
—
±1
10 ||4
10 ||2
—
—
—
±50
8
13
13
Max
5.5
1
V
DD
+ 0.3
—
—
—
—
+7.0
—
6.5
—
—
—
100
—
—
—
10
—
V
SS
+ 0.2
—
—
Units
V
µA
V
dB
dB
dB
dB
mV
mV
I
OUT
= 0
Conditions
V
DD
= 5V, V
CM
= -0.3V to 5.3V
V
DD
= 5V, V
CM
= 2.5V to 5.3V
V
DD
= 5V, V
CM
= -0.3V to 2.5V
V
CM
= V
SS
V
CM
= V
SS
(Note 1)
V
CM
= V
SS
(Note 1)
Drift with Temperature
Input Hysteresis Voltage
Drift with Temperature
Drift with Temperature
Input Bias Current
Over Temperature
Input Offset Current
Common Mode Input Impedance
Differential Input Impedance
Open-Drain Output
Output Pull-Up Voltage
High-Level Output Current
Low-Level Output Voltage
Short-Circuit Current
Output Pin Capacitance
Note 1:
2:
3:
µV/°C T
A
= -40°C to +85°C, V
CM
= V
SS
µV/°C T
A
= -40°C to +25°C, V
CM
= V
SS
µV/°C T
A
= +25°C to +85°C, V
CM
= V
SS
pA
pA
pA
Ω||pF
Ω||pF
V
nA
V
mA
pF
(Note
2)
V
DD
= 1.6V to 5.5V, V
PU
= 10V
(Note 2)
I
OUT
= 2 mA, V
PU
= V
DD
= 5V
V
PU
= V
DD
= 5.0V
(Note 2)
V
CM
= V
SS
T
A
= -40°C to +85°C, V
CM
= V
SS
(Note 3)
V
CM
= V
SS
The input offset voltage is the center of the input-referred trip points. The input hysteresis is the difference between the
input-referred trip points.
Do not short the output above V
SS
+ 10V. Limit the output current to Absolute Maximum Rating of 30 mA. The
comparator does not function properly when V
PU
< V
DD
.
Input bias current overtemperature is not tested for the SC-70-5 package.
DS21714C-page 2
2003 Microchip Technology Inc.
MCP6546/7/8/9
AC CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated, V
DD
= +1.6V to +5.5V, V
SS
= GND, T
A
= 25°C, V
IN
+ = V
DD
/2,
Step = 200 mV, Overdrive = 100 mV, R
PU
= 2.74 kΩ to V
PU
= V
DD
, and C
L
= 36 pF (Refer to Figure 1-2 and Figure 1-3).
Parameters
Fall Time
Propagation Delay (High-to-Low)
Propagation Delay (Low-to-High)
Propagation Delay Skew
Maximum Toggle Frequency
Input Noise Voltage
Note 1:
2:
Sym
t
F
t
PHL
t
PLH
t
PDS
f
MAX
f
MAX
E
N
Min
—
—
—
—
—
—
—
Typ
0.7
4.0
3.0
-1.0
225
165
200
Max
—
8.0
8.0
—
—
—
—
Units
µs
µs
µs
µs
kHz
kHz
µV
P-P
(Note 1)
(Notes 1 and 2)
V
DD
= 1.6V
V
DD
= 5.5V
10 Hz to 100 kHz
(Note 1)
Conditions
t
R
and t
PLH
depend on the load (R
L
and C
L
); these specifications are valid for the indicated load only.
Propagation Delay Skew is defined as: t
PDS
= t
PLH
- t
PHL
.
SPECIFICATIONS FOR MCP6548 CHIP SELECT
Electrical Specifications:
Unless otherwise indicated, V
DD
= +1.6V to +5.5V, V
SS
= GND, T
A
= 25°C, V
IN
+ = V
DD
/2, V
IN
– = V
SS
,
R
PU
= 2.74 kΩ to V
PU
= V
DD
, and C
L
= 36 pF (Refer to Figures 1-1 and 1-3).
Parameters
CS Low Specifications
CS Logic Threshold, Low
CS Input Current, Low
CS High Specifications
CS Logic Threshold, High
CS Input Current, High
CS Input High, V
DD
Current
CS Input High, GND Current
Comparator Output Leakage
CS Dynamic Specifications
CS Low to Comparator Output Low
Turn-on Time
CS High to Comparator Output
High Z Turn-off Time
CS Hysteresis
Sym
Min
Typ
Max
Units
Conditions
V
IL
I
CSL
V
SS
—
—
5
0.2V
DD
—
V
pA
CS = V
SS
V
IH
I
CSH
I
DD
I
SS
I
O(LEAK)
0.8V
DD
—
—
—
—
—
1
18
-20
1
V
DD
—
—
—
—
V
pA
pA
pA
pA
CS = V
DD
CS = V
DD
CS = V
DD
V
OUT
= V
SS
+10V
t
ON
t
OFF
V
CS_HYST
—
—
—
2
10
0.6
50
—
—
ms
µs
V
CS = 0.2V
DD
to V
OUT
= V
DD
/2,
V
IN
– = V
DD
CS = 0.8V
DD
to V
OUT
= V
DD
/2,
V
IN
– = V
DD
V
DD
= 5V
CS
t
ON
V
OUT
I
SS
I
CS
Hi-Z
V
IL
V
IH
t
OFF
Hi-Z
-0.6 µA, typ.
-20 pA, typ.
1 pA, typ.
V
IN
–
V
IN
+ = V
DD
/2
t
PLH
V
OUT
100 mV
V
OH
t
PHL
100 mV
-20 pA, typ.
1 pA, typ.
V
OL
V
OL
FIGURE 1-1:
Timing Diagram for the CS
pin on the MCP6548.
FIGURE 1-2:
Diagram.
Propagation Delay Timing
2003 Microchip Technology Inc.
DS21714C-page 3
MCP6546/7/8/9
TEMPERATURE SPECIFICATIONS
Electrical Specifications:
Unless otherwise indicated, V
DD
= +1.6V to +5.5V and V
SS
= GND.
Parameters
Temperature Ranges
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances
Thermal Resistance, 5L-SC-70
Thermal Resistance, 5L-SOT-23
Thermal Resistance, 8L-PDIP
Thermal Resistance, 8L-SOIC
Thermal Resistance, 8L-MSOP
Thermal Resistance, 14L-PDIP
Thermal Resistance, 14L-SOIC
Thermal Resistance, 14L-TSSOP
Note:
θ
JA
θ
JA
θ
JA
θ
JA
θ
JA
θ
JA
θ
JA
θ
JA
—
—
—
—
—
—
—
—
331
256
85
163
206
70
120
100
—
—
—
—
—
—
—
—
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
T
A
T
A
T
A
-40
-40
-65
—
—
—
+85
+125
+150
°C
°C
°C
Note
Sym
Min
Typ
Max
Units
Conditions
The MCP6546/7/8/9 operates over this extended temperature range, but with reduced performance. In any
case, the Junction Temperature (T
J
) must not exceed the absolute maximum specification of +150°C.
1.2
Test Circuit Configuration
This test circuit configuration is used to determine the
AC and DC specifications.
V
DD
V
PU
= V
DD
200 kΩ
200 kΩ
100 kΩ
V
IN
= V
SS
V
SS
= 0V
MCP654X
R
PU
2.74 kΩ
V
OUT
36 pF
FIGURE 1-3:
AC and DC Test circuit for
the open- drain output comparators.
DS21714C-page 4
2003 Microchip Technology Inc.
MCP6546/7/8/9
2.0
Note:
TYPICAL PERFORMANCE CURVES
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note:
Unless otherwise indicated, V
DD
= +1.6V to +5.0V, V
SS
= GND, T
A
= +25°C, V
IN
+ = V
DD
/2, V
IN
– = GND,
R
PU
= 2.74 kΩ to V
PU
= V
DD
, and C
L
= 36 pF.
14%
Percentage of Occurrences
12%
10%
8%
6%
4%
2%
0%
-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
Input Offset Voltage (mV)
5
6
7
18%
Percentage of Occurrences
16%
14%
12%
10%
8%
6%
4%
2%
0%
1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2 5.6 6.0
Input Hysteresis Voltage (mV)
1200 Samples
V
CM
= V
SS
1200 Samples
V
CM
= V
SS
FIGURE 2-1:
Input Offset Voltage
Histogram at V
CM
= V
SS
.
16%
Percentage of Occurrences
14%
12%
10%
8%
6%
4%
2%
0%
-14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14
Input Offset Voltage Drift (µV/°C)
FIGURE 2-4:
Input Hysteresis Voltage
Histogram at V
CM
= V
SS
.
26%
24%
22%
20%
18%
16%
14%
12%
10%
8%
6%
4%
2%
0%
2
3
1200 Samples
V
CM
= V
SS
Percentage of Occurrences
1200 Samples
V
CM
= V
SS
T
A
= 25°C to 85°C
T
A
= -40°C to 25°C
4 5 6 7 8 9 10 11 12 13 14 15 16
Input Hysteresis Voltage Drift (µV/°C)
FIGURE 2-2:
Input Offset Voltage Drift
Histogram at V
CM
= V
SS
.
500
400
300
200
100
0
-100
-200
-300
-400
-500
-40
-20
V
CM
= V
SS
V
DD
= 1.6V
FIGURE 2-5:
Drift Histogram.
6.0
Input Hysteresis Voltage (mV)
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
-40
-20
Input Hysteresis Voltage
Input Offset Voltage (µV)
V
CM
= V
SS
V
DD
= 1.6V
V
DD
= 5.5V
V
DD
= 5.5V
0
20
40
60
Ambient Temperature (°C)
80
0
20
40
60
Ambient Temperature (°C)
80
FIGURE 2-3:
Input Offset Voltage vs.
Ambient Temperature at V
CM
= V
SS
.
FIGURE 2-6:
Input Hysteresis Voltage vs.
Ambient Temperature at V
CM
= V
SS
.
2003 Microchip Technology Inc.
DS21714C-page 5
