MICREL MIC6270BM5 Datasheet
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 voltage 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 Temperature Range Package
MIC6270BM5 –40°C to +85°C SOT-23-5
Pin Configuration
V–
2
B10
OUT
13
Part
Identification
V+IN–
IN+
45
SOT-23-5 (M5)
Pin Description
Pin Number Pin Name Pin Function
1 OUT Comparator Output:
2 V– Negative Supply: Negative supply for split supply application or ground for
3 IN+ Noninverting Input:
4 IN– Inverting Input:
5 V+ Positive Supply:
Functional Configuration
single supply application.
V–
OUT
13
2
V+IN–
IN+
45
SOT-23-5 (M5)
9
October 1998 9-13
MIC6270 Micrel
Absolute Maximum Ratings
Supply Voltage (VV+ – VV–)............................. 36V or ±18V
Differential Input Voltage (V
Input Voltage ............................................... –0.3V to +36 V
Input Current (VIN < –0.3V) ........................................50mA
IN+
– V
) .......................±36V
IN–
Operating Ratings
Supply Voltage .................................................... 2V to 36V
Ambient Temperature Range..................... –40°C to +85°C
SOT-23-5 Thermal Resistance (θJA).....................220°C/W
(mounted to printed circuit board)
Output Short-Circuit to GND, Note 1 ................................∞
Storage Temperature Range ...................–65°C to +150°C
Lead Temperature (soldering, 10 secs.) ................... 260°C
Electrical Characteristics
V+ = 5V; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C, TA = TJ; unless noted
Symbol Parameter Condition Min Typ Max Units
V
OS
I
B
I
OS
V
CM
I
S
General Note: Devices are ESD protected; however, handling precautions are recommended.
Note 1: 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
Note 2: Measured at the output switch point where V
Note 3: The direction of input current is out of the device due to its PNP input.
Note 4: The input common-mode voltage, V
Note 5: The response time measured using a 100mV input step with 5mV overdrive. With greater overdrive, 300ns can be obtained. See “Typical
Note 6: Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode
Input Offset Voltage Note 2 25mV
9 mV
Input Bias Current I
IN(+)
or I
with output in linear range, 25 250 nA
IN(–)
VCM = 0V, Note 3 400 nA
Input Offset Current I
IN(+)
– I
, VCM = 0V 5 50 nA
IN(–)
150 nA
Input Voltage Range V+ = 30V, Note 4 0 V+ – 1.5 V
V+ – 2 V
Supply Current RL = ∞ 0.3 0.9 mA
RL = ∞, V+ = 36V 0.4 1.2 mA
Voltage Gain R
≥ 15kΩ, V+ = 15V 50 200 V/mV
L
VO = 1V to 11V
Large Signal Response Time V
= TTL logic swing, V
IN
VRL = 5V, RL = 5.1kΩ
= 1.4V 300 ns
REF
Response Time VRL = 5V, RL = 5.1kΩ, Note 5 0.6 µs
Output Sink Current V
IN(–)
= 1V, V
= 0, VO ≤ 1.5V 10 20 mA
IN(+)
Output Pull-Up Current 15 50 µA
Saturation Voltage V
IN(–)
= 1V, V
IN(+)
= 0, I
≤ 4mA 250 400 mV
SINK
700 mV
Differential Input Voltage V
approximately 20mA, independent of VV+.
(0Vdc to V+ – 1.5Vdc).
, or V
25°C, but either or both inputs can go to +36Vdc without damage, independent of of VV+.
Characteristics.”
range, the comparator will provide a proper output state. The low input voltage state must not be below –0.3Vdc (or 0.3Vdc below VV–).
IN+
IN(+), VIN(–)
≅ 1.4Vdc with RS = 0Ω, V+ = 5Vdc to 30Vdc, and over the full input common-mode range
OUT
must not go below –0.3V. The upper end of the common-mode voltage range is V+ – 1.5V at
IN–
≥ 0V (or V–, if used), Note 6 36 V
9-14 October 1998
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