MCP6546/6R/6U/7/8/9
Open-Drain Output Sub-Microamp Comparators
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., 100 mV Overdrive)
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.)
Temperature Range:
- Industrial: -40°C to +85°C
- Extended: -40°C to +125°C
Description
The Microchip Technology Inc. MCP6546/7/8/9 family
of comparators is offered in single (MCP6546,
MCP6546R, MCP6546U), 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 a quiescent current of
less than 1 µA/comparator.
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.
* SC-70-5 E-Temp parts not avaliable at this release
of
the data sheet
.
MCP6546U SOT-23-5 is E-Temp only.
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
-
+
8
7
6
5
NC
V
DD
OUT
NC
OUT 1
V
DD
2
V
IN
+ 3
MCP6546R
SOT-23-5
5 V
SS
MCP6547
PDIP, SOIC, MSOP
1
2
3
4
8
- +
7
+ - 6
5
V
DD
MCP6549
PDIP, SOIC, TSSOP
OUTA 1
14 OUTD
- + + - 13 V
IND
–
12 V
IND
+
11 V
SS
- + +- 9 V –
INC
10 V
INC
+
8 OUTC
OUTA
V
INA
–
4 V
IN
– V
INA
+
V
SS
OUTB V
INA
– 2
V
INB
– V
INA
+ 3
V
INB
+
V
DD
4
V
INB
+ 5
V
INB
– 6
OUTB 7
MCP6546
SOT-23-5, SC-70-5
OUT 1
V
SS
2
V
IN
+ 3
5 V
DD
-
+
4 V
IN
–
MCP6546U
SOT-23-5
+
-
V
IN
– 1
V
SS
2
V
IN
+ 3
5 V
DD
4 OUT
©
2006 Microchip Technology Inc.
-
+
MCP6548
PDIP, SOIC, MSOP
NC
V
IN
–
V
IN
+
V
SS
1
2
3
4
-
+
8
7
6
5
CS
V
DD
OUT
NC
DS21714E-page 1
MCP6546/6R/6U/7/8/9
1.0
ELECTRICAL
CHARACTERISTICS
† Notice:
Stresses above those listed under “Absolute Maxi-
mum Ratings” 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.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
Absolute Maximum Ratings †
V
DD
- V
SS
.........................................................................7.0V
Open-Drain output............................................... V
SS
+ 10.5V
Analog Input (V
IN
+, V
IN
-)††............. V
SS
- 1.0V to V
DD
+ 1.0V
All other 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) .....................................2 kV;200V (MCP6546U)
(HBM;MM) ................................ 4 kV; 200V (all other parts)
†† See
Section 4.1.2 “Input Voltage and Current
Limits”
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
Drift with Temperature
Input Hysteresis Voltage
Linear Temp. Co.
Quadratic Temp. Co.
Input Bias Current
At Temperature (I-Temp parts)
At Temperature (E-Temp parts)
Input Offset Current
Common Mode Input Impedance
Differential Input Impedance
Note 1:
2:
3:
4:
Sym
V
DD
I
Q
Min
1.6
0.3
Typ
—
0.6
Max
5.5
1
Units
V
µA
V
PU
≥
V
DD
I
OUT
= 0
Conditions
V
CMR
CMRR
CMRR
CMRR
PSRR
V
OS
ΔV
OS
/ΔT
A
V
HYST
TC
1
TC
2
I
B
I
B
I
B
I
OS
Z
CM
Z
DIFF
V
SS
−
0.3
55
50
55
63
-7.0
—
1.5
—
—
—
—
—
—
—
—
—
70
65
70
80
±1.5
±3
3.3
6.7
-0.035
1
25
1200
±1
10
13
||4
10 ||2
13
V
DD
+ 0.3
—
—
—
—
+7.0
—
6.5
—
—
—
100
5000
—
—
—
V
dB
dB
dB
dB
mV
mV
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)
µV/°C T
A
= -40°C to +125°C, V
CM
= V
SS
µV/°C T
A
= -40°C to +125°C, V
CM
= V
SS
(Note 2)
µV/°C
2
T
A
= -40°C to +125°C, V
CM
= V
SS
(Note 2)
pA
pA
pA
pA
Ω||pF
Ω||pF
V
CM
= V
SS
T
A
= +85°C, V
CM
= V
SS
(Note 3)
T
A
= +125°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.
V
HYST
at differential temperatures is estimated using: V
HYST
(T
A
) = V
HYST
+ (T
A
-25°C) TC
1
+ (T
A
- 25°C)
2
TC
2
.
Input bias current at temperature is not tested for the SC-70-5 package
Do not short the output above V
SS
+ 10V. Limit the output current to Absolute Maximum Rating of 30 mA. The minimum
V
PU
test limit was V
DD
before Dec. 2004 (week code 52).
DS21714E-page 2
©
2006 Microchip Technology Inc.
MCP6546/6R/6U/7/8/9
DC CHARACTERISTICS (CONTINUED)
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
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:
4:
Sym
V
PU
I
OH
V
OL
I
SC
I
SC
C
OUT
Min
1.6
-100
V
SS
—
–
—
Typ
—
—
—
±1.5
30
8
Max
10
—
V
SS
+ 0.2
—
—
—
Units
V
nA
V
mA
mA
pF
(Note
4)
Conditions
V
DD
= 1.6V to 5.5V, V
PU
= 10V
(Note 4)
I
OUT
= 2 mA, V
PU
= V
DD
= 5V
V
PU
= V
DD
= 1.6V
(Note 4)
V
PU
= V
DD
= 5.5V
(Note 4)
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.
V
HYST
at differential temperatures is estimated using: V
HYST
(T
A
) = V
HYST
+ (T
A
-25°C) TC
1
+ (T
A
- 25°C)
2
TC
2
.
Input bias current at temperature is not tested for the SC-70-5 package
Do not short the output above V
SS
+ 10V. Limit the output current to Absolute Maximum Rating of 30 mA. The minimum
V
PU
test limit was V
DD
before Dec. 2004 (week code 52).
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
ni
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
.
MCP6548 CHIP SELECT (CS) 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
, 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
V
IL
I
CSL
V
IH
I
CSH
I
DD
I
SS
I
O(LEAK)
t
ON
t
OFF
V
CS_HYST
Min
V
SS
—
0.8 V
DD
—
—
—
—
—
—
—
Typ
—
5
—
1
18
-20
1
2
10
0.6
Max
0.2 V
DD
—
V
DD
—
—
—
—
50
—
—
Units
V
pA
V
pA
pA
pA
pA
ms
µs
V
CS = V
DD
CS = V
DD
CS = V
DD
CS = V
SS
Conditions
V
OUT
= V
SS
+10V
,
CS = V
DD
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
©
2006 Microchip Technology Inc.
DS21714E-page 3
MCP6546/6R/6U/7/8/9
CS
V
IL
t
ON
V
OUT
High-Z
I
SS
-20 pA (typ.)
I
CS
1 pA (typ.)
V
IH
t
OFF
High-Z
V
OUT
V
IN
–
V
IN
+ = V
DD
/2
t
PLH
100 mV
V
OH
V
OL
t
PHL
100 mV
-0.6 µA (typ.)
5 pA (typ.)
-20 pA (typ.)
1 pA (typ.)
V
OL
FIGURE 1-1:
Timing Diagram for the CS
pin on the MCP6548.
FIGURE 1-2:
Diagram.
Propagation Delay Timing
TEMPERATURE CHARACTERISTICS
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 I-temp family 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.
1.1
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 mA)/ V
DD
V
OUT
36 pF
FIGURE 1-3:
AC and DC Test Circuit for
the Open-Drain Output Comparators.
DS21714E-page 4
©
2006 Microchip Technology Inc.
MCP6546/6R/6U/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 +5.5V, 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
5
6
7
Input Offset Voltage (mV)
18%
Percentage of Occurrences
1200 Samples
V
CM
= V
SS
16%
14%
12%
10%
8%
6%
4%
2%
0%
1200 Samples
V
CM
= V
SS
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)
FIGURE 2-1:
V
CM
= V
SS
.
16%
14%
12%
10%
8%
6%
4%
2%
0%
Input Offset Voltage at
FIGURE 2-4:
V
CM
= V
SS
.
Percentage of Occurrences
25%
20%
15%
10%
5%
0%
V
DD
= 5.5V
Input Hysteresis Voltage at
Percentage of Occurrences
1200 Samples
V
CM
= V
SS
T
A
= -40°C to +125°C
596 Samples
V
CM
= V
SS
T
A
= -40°C to +125°C
V
DD
= 1.6V
4.6
5.0
5.4
5.8
6.2
6.6
7.0
7.4
7.8
8.2
8.6
9.0
-0.020
0
2
4
6
-8
-6
-4
-2
8
10
12
-14
-12
-10
14
Input Offset Voltage Drift (µV/°C)
Input Hysteresis Voltage –
Linear Temp. Co.; TC
1
(µV/°C)
FIGURE 2-2:
V
CM
= V
SS
.
7
Inverting Input, Output
Voltage (V)
6
5
4
3
2
1
0
-1
0
1
2
V
DD
= 5.5V
Input Offset Voltage Drift at
FIGURE 2-5:
Input Hysteresis Voltage
Linear Temp. Co. (TC
1
) at V
CM
= V
SS
.
Percentage of Occurrences
20%
18%
16%
14%
12%
10%
8%
6%
4%
2%
0%
596 Samples
V
CM
= V
SS
T
A
= -40°C to +125°C
V
DD
= 5.5V
V
DD
= 1.6V
V
OUT
-0.060
-0.056
-0.052
-0.048
-0.044
-0.040
-0.036
-0.032
-0.028
-0.024
3
4
5
6
7
Time (1 ms/div)
8
9
10
Input Hysteresis Voltage –
2
Quadratic Temp. Co.; TC
2
(µV/°C )
FIGURE 2-3:
The MCP6546/6R/6U/7/8/9
comparators show no phase reversal.
FIGURE 2-6:
Input Hysteresis Voltage
Quadratic Temp. Co. (TC
2
) at V
CM
= V
SS
.
©
2006 Microchip Technology Inc.
DS21714E-page 5
-0.016
V
IN
–
9.4
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