MIC6270
Micrel
MIC6270
IttyBitty™ Comparator
Advance Information
General Description
The MIC6270 is a precision voltage comparator with an offset
voltage specification of 5mV maximum.
The MIC6270 is designed to operate from a single 2V to 36V
power supply. Operation from split power supplies is also
possible. Its low supply current drain is independent of the
magnitude of the supply voltage.
This comparator also features an input common-mode volt-
age range that includes ground. Inputs are protected against
reverse polarity (input voltage less than V–) and ESD.
The MIC6270 has an open-collector output that directly
interfaces with TTL, CMOS, and other types of logic. Several
MIC6270 outputs can be connected together for wired-OR
logic. The output also features an internal pull-up current
source that can be used instead of an external load in some
applications.
Features
2V to 36V supply
300µA supply current independent of supply
25nA input bias current
±5nA
input offset current
±3mV
input offset voltage
Input common-mode voltage range includes ground
Differential input voltage range equal to the power
supply voltage
• 250mV at 4mA output saturation voltage
• Output compatible with TTL, DTL, ECL, MOS, and
CMOS logic
•
•
•
•
•
•
•
Applications
•
•
•
•
•
•
Limit comparators
A/D converters
Pulse, square wave, time delay generators
Wide range VCO
MOS clock timers
Multivibrators and high-voltage digital logic gates
Ordering Information
Part Number
MIC6270BM5
Temperature Range
–40°C to +85°C
Package
SOT-23-5
Pin Configuration
IN+
3
Functional Configuration
V– OUT
2
1
IN+
3
V– OUT
2
1
B10
4
5
Part
Identification
4
5
IN–
V+
IN–
V+
SOT-23-5 (M5)
SOT-23-5 (M5)
Pin Description
Pin Number
1
2
3
4
5
Pin Name
OUT
V–
IN+
IN–
V+
Pin Function
Comparator Output:
Negative Supply: Negative supply for split supply application or ground for
single supply application.
Noninverting Input:
Inverting Input:
Positive Supply:
October 1998
9-13
MIC6270
Micrel
Absolute Maximum Ratings
Supply Voltage (V
V+
– V
V–
) ............................. 36V or
±18V
Differential Input Voltage (V
IN+
– V
IN–
) .......................
±36V
Input Voltage ............................................... –0.3V to +36 V
Input Current (V
IN
< –0.3V) ........................................ 50mA
Output Short-Circuit to GND,
Note 1 ................................∞
Storage Temperature Range ................... –65°C to +150°C
Lead Temperature (soldering, 10 secs.) ................... 260°C
Operating Ratings
Supply Voltage .................................................... 2V to 36V
Ambient Temperature Range ..................... –40°C to +85°C
SOT-23-5 Thermal Resistance (θ
JA
) ..................... 220°C/W
(mounted to printed circuit board)
Electrical Characteristics
V+ = 5V; T
A
= 25°C,
bold
values indicate –40°C
≤
T
A
≤
+85°C, T
A
= T
J
; unless noted
Symbol
V
OS
I
B
I
OS
V
CM
I
S
Parameter
Input Offset Voltage
Input Bias Current
Input Offset Current
Input Voltage Range
Supply Current
Voltage Gain
Large Signal Response Time
Response Time
Output Sink Current
Output Pull-Up Current
Saturation Voltage
Differential Input Voltage
V
IN(–)
= 1V, V
IN(+)
= 0, I
SINK
≤
4mA
V
IN(+),
V
IN(–)
≥
0V (or V–, if used),
Note 6
Condition
Note 2
I
IN(+)
or I
IN(–)
with output in linear range,
V
CM
= 0V,
Note 3
I
IN(+)
– I
IN(–)
, V
CM
= 0V
V+ = 30V,
Note 4
R
L
=
∞
R
L
=
∞,
V+ = 36V
R
L
≥
15kΩ, V+ = 15V
V
O
= 1V to 11V
V
IN
= TTL logic swing, V
REF
= 1.4V
V
RL
= 5V, R
L
= 5.1kΩ
V
RL
= 5V, R
L
= 5.1kΩ,
Note 5
V
IN(–)
= 1V, V
IN(+)
= 0, V
O
≤
1.5V
10
50
0
0.3
0.4
200
300
0.6
20
15
250
50
400
700
36
Min
Typ
2
25
5
Max
5
9
250
400
50
150
V+ – 1.5
V+ – 2
0.9
1.2
Units
mV
mV
nA
nA
nA
nA
V
V
mA
mA
V/mV
ns
µs
mA
µA
mV
mV
V
General Note:
Devices are ESD protected; however, handling precautions are recommended.
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
A short circuit from OUT to V+ can cause excessive heating and damage the device. The maximum short circuit output current (OUT to V–) is
approximately 20mA, independent of V
V+
.
Measured at the output switch point where V
OUT
≅
1.4Vdc with R
S
= 0Ω, V+ = 5Vdc to 30Vdc, and over the full input common-mode range
(0Vdc to V+ – 1.5Vdc).
The direction of input current is out of the device due to its PNP input.
The input common-mode voltage, V
IN+
, or V
IN–
must not go below –0.3V. The upper end of the common-mode voltage range is V+ – 1.5V at
25°C, but either or both inputs can go to +36Vdc without damage, independent of of V
V+
.
The response time measured using a 100mV input step with 5mV overdrive. With greater overdrive, 300ns can be obtained. See “Typical
Characteristics.”
Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode
range, the comparator will provide a proper output state. The low input voltage state must not be below –0.3Vdc (or 0.3Vdc below V
V–
).
9-14
October 1998
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
