Micrel MIC6270BM5 Ittybitty comparator Datasheet

MIC6270
IttyBitty® Comparator
General Description
Features
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 pullup current source that can be used instead of an external
load in some applications.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
•
•
•
•
•
•
•
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
Multi-vibrators and high-voltage digital logic gates
Ordering Information
Part Number
Pin Configuration
Standard
Pb-Free
Temperature
Range
Package
MIC6270BM5
MIC6270YM5
–40° to +85°C
5-Pin SOT-23
Functional Configuration
IN+
V– OUT
3
2
IN+
1
Part
Identification
B1 0
4
5
IN–
V+
5-Pin SOT-23 (M5)
3
V– OUT
2
1
4
5
IN–
V+
5-Pin SOT-23 (M5)
Pin Description
Pin Number
Pin Name
Pin Function
1
OUT
2
V–
Negative Supply: Negative supply for split supply application or ground for single supply application.
3
IN+
Non-inverting Input
4
IN–
Inverting Input
5
V+
Positive Supply
Comparator Output
IttyBitty is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
May 2008
M9999-051608
Micrel, Inc.
MIC6270
Absolute Maximum Ratings
Operating Ratings(2)
Supply Voltage (VV+ – VV–) ............................... 36V or ±18V
Differential Input Voltage (VIN+ – VIN–). .........................±36V
Input Voltage ................................................. –0.3V to +36V
Input Current (VIN <–0.3V)...........................................50mA
Output Short-Circuit to GND, Note 1 .................................∞
Storage Temperature (Ts) .........................–65°C to +150°C
Lead Temperature (soldering, 10sec.)....................... 260°C
Supply Voltage ................................................... 2V to +36V
Ambient Temperature (TA) .......................... –40°C to +85°C
Thermal Resistance
SOT-23-5 (θJA).................................................220°C/W
(mounted to printed circuit board)
Electrical Characteristics
V+ = 5V; TA = 25°C, bold values indicate –40°C< TA < +85°C, TA = TJ; unless noted.
Symbol
Parameter
Condition
Typ
Max
Units
VOS
Input Offset Voltage
Note 2
Min
2
5
9
mV
mV
IB
Input Bias Current
IIN(+) or IIN(–) with output in linear range,
VCM = 0V, Note 3
25
250
400
nA
nA
IOS
Input Offset Current
IIN(+ – IIN(–), VCM = 0V
5
50
150
nA
nA
VCM
Input Voltage Range
V+ = 30V, Note 4
V+ – 1.5
V+ – 2
V
V
IS
Supply Current
RL = ∞
RL = ∞, V+ = 36V
0.9
1.2
mA
mA
Voltage Gain
RL ≥ 15kΩ, V+ = 15V
VO = 1V to 11V
Large Signal Response Time
0
0.3
0.4
200
V/mV
VIN = TTL logic swing, VREF = 1.4V
VRL = 5V, RL = 5.1kΩ
300
ns
Response Time
VRL = 5V, RL = 5.1kΩ, Note 5
0.6
µs
Output Sink Current
VIN(–) = 1V, V IN(+) = 0, VO ≤ 1.5V
20
mA
Output Pull-Up Current
Saturation Voltage
VIN(–) = 1V, V IN(+) = 0, ISINK ≤ 4mA
Differential Input Voltage
V IN(+), VIN(–) ≥ 0V (or V–, if used), Note 6
50
10
15
50
µA
250
400
700
mV
mV
36
V
General Note: Devices are ESD protected; however, handling precautions are recommended.
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
approximately 20mA, independent of VV+.
2. Measured at the output switch point where VOUT ≅ 1.4Vdc with RS = 0Ω, V+ = 5Vdc to 30Vdc, and over the full input common-mode range
(0Vdc to V+ – 1.5Vdc).
3. The direction of input current is out of the device due to its PNP input.
4. The input common-mode voltage, VIN+, or VIN– 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 VV+.
5. The response time measured using a 100mV input step with 5mV overdrive. With greater overdrive, 300ns can be obtained. See “Typical
Characteristics.”
6. 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 VV–).
May 2008
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M9999-051608
Micrel, Inc.
MIC6270
Typical Characteristics
Supply Current
vs. Supply Voltage
–55°C
0.3
0.2
TA = +125°C
40
+25°C
30
–55°C
20
VIN(cm) = 0Vdc
RL =
0.1
0
10
20
30
SUPPLY VOLTAGE (V)
10
40
VIN
5.1k
4
1
5
May 2008
VOU T
INPUT (mV)
+5V
OUTPUT (V)
Output Response Time
vs. Overdrive (Test Circuit)
0
6
5
4
3
2
1
0
-1
50
10
20
30
SUPPLY VOLTAGE (V)
40
100mV
0
-50
-100
-150
-100
20mV
TA = 25°C
0
100 200
TIME (ns)
3
300
400
+25°C
0.1
+125°C
0.01
0.001
0.01
0.1
1
10
100
OUTPUT SINK CURRENT (mA)
Output Response Time
vs. Overdrive
INPUT
OVERDRIVE
= 5mV
TA = –55°C
1
OUTPUT (V)
0.4
INPUT (mV)
+25°C
Output Saturation
Voltage
10
SATURATION VOLTAGE (V)
50
TA = +125°C
INPUT CURRENT (nA)
SUPPLY CURRENT (mA)
0.5
Input Current
vs. Supply Voltage
6
5
4
3
2
1
0
150
-1
100
Output Response Time
vs. Overdrive
INPUT
OVERDRIVE
= 100mV
20mV
TA = 25°C
50
0
-50
-200
5mV
0
200 400
TIME (ns)
600
800
M9999-051608
Micrel, Inc.
MIC6270
Package Information
5-Pin SOT-23 (M5)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its
use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant
into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 1998 Micrel, Incorporated.
May 2008
4
M9999-051608
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