MICREL MIC7211BM5, MIC7221BM5 Datasheet
MIC7211/7221
Micrel
MIC7211/7221
IttyBitty™ Rail-to-Rail Input Comparator
Preliminary Information
General Description
The MIC7211 and MIC7221 are micropower comparators
featuring rail-to-rail input performance in Micrel’s IttyBitty
SOT-23-5 package. The MIC7211/21 is ideal for systems
where small size is a critical consideration.
The MIC7211/21 is optimized for single supply operation
from 2.2V to 10V power supplies.
The MIC7211 features a conventional push-pull output while
the MIC7221 has an open-drain output for mixed-voltage
applications with an external pull-up resistor.
The MIC7211/21 benefits small battery-operated portable
electronic devices where small size and the ability to place
the comparator close to the signal source are primary design
concerns.
™
Features
• Small footprint SOT-23-5 package
• Guaranteed performance at 2.2V, 2.7V, 5V, and 10V
•7µA typical supply current at 5V
•<5µs response time at 5V
• Push-pull output (MIC7211)
• Open-drain output (MIC7221)
• Input voltage range may exceed supply voltage by 0.3V
• >100mA typical sink or source
Applications
• Battery-powered products
• Notebook computers and PDAs
• PCMCIA cards
• Cellular and other wireless communication devices
• Alarm and security circuits
• Direct sensor interface
Ordering Information
Part Number Temp. Range Package Mark
MIC7211BM5 –40°C to +85°C SOT-23-5 A14
MIC7221BM5 –40°C to +85°C SOT-23-5 A15
Pin Configuration
IN+
OUTV+
13
2
Part
Identification
Axx
45
IN–
V–
Pin Description
Pin Number Pin Name Pin Function
1 OUT Amplifier Output
2 V+ Positive Supply
3 IN+ Noninverting Input
4 IN– Inverting Input
5 V– Negative Suppy
Functional Configuration
IN+
45
IN–
SOT-23-5 (M5)
OUTV+
2
13
V–
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
June 1999 1 MIC7211/7221
MIC7211/7221
Micrel
Absolute Maximum Ratings (Note 1)
Supply Voltage (VV+ – VV–)...........................................12V
Differential Input Voltage (V
I/O Pin Voltage (V
IN+
, V
OUT
............................................ VV+ + 0.3V to VV– – 0.3V
Junction Temperature (TJ) ...................................... +150°C
, V
IN+
) .............±(VV+ – VV–)
IN–
), Note 3 ..................................
Operating Ratings (Note 2)
Supply Voltage (VV+ – VV–).............................. 2.2V to 10V
Junction Temperature (TJ) ......................... –40°C to +85°C
Maximum Junction Temperature (T
Package Thermal Resistance (θJA) Note 5 ..........325°C/W
Maximum Power Dissipation.................................... Note 4
) Note 4 . +125°C
J(max)
Storage Temperature (TS) .......................–65°C to +150°C
ESD, Note 6
DC Electrical Characteristics (2.2V)
VV+ = +2.2V, VV– = 0V, VCM = V
Symbol Parameter Condition Min Typ Max Units
V
OS
TCV
TCV
I
B
I
OS
OS
OS
Input Offset Voltage 210mV
Input Offset Voltage 1 µV/°C
Temperature Drift
Input Offset Voltage 3.3
Drift Over Time
Input Bias Current 0.5 pA
Input Offset Current 0.25 pA
CMRR Common-Mode Rejection Ratio 0V ≤ VCM ≤ 2.2V 60 dB
PSRR Positive Power Supply V
Rejection Ratio
A
V
V
I
VOL
OH
OL
S
Gain 125 dB
Output Voltage (High) MIC7211, I
Output Voltage (Low) I
Supply Current V
= VV+/2; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; Note 7; unless noted
OUT
= 2.2V to 5V 90 dB
V+
= 2.5mA 2.1 2.18 V
LOAD
= 2.5mA 0.02 0.1 V
LOAD
= low 5 12 µA
OUT
µV
⁄month
DC Electrical Characteristics (2.7V)
VV+ = +2.7V, VV– = 0V, VCM = V
Symbol Parameter Condition Min Typ Max Units
V
OS
TCV
OS
Input Offset Voltage 210mV
Input Offset Voltage 1 µV/°C
Temperature Drift
TCV
OS
Input Offset Voltage 3.3
Drift Over Time
I
B
I
OS
Input Bias Current 0.5 pA
Input Offset Current 0.25 pA
CMRR Common-Mode Rejection Ratio 0V ≤ VCM ≤ 2.7V 65 dB
PSRR Positive Power Supply V
Rejection Ratio
A
V
V
I
VOL
OH
OL
S
Gain 125 dB
Output Voltage (High) MIC7211, I
Output Voltage (Low) I
Supply Current V
= VV+/2; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; Note 7; unless noted
OUT
= 2.7V to 5V 90 dB
V+
= 2.5mA 2.6 2.68 V
LOAD
= 2.5mA 0.02 0.1 V
LOAD
= low 5 12 µA
OUT
µV
⁄month
MIC7211/7221 2 June 1999
MIC7211/7221
Micrel
DC Electrical Characteristics (5V)
VV+ = +5.0V, VV– = 0V, VCM = V
Symbol Parameter Condition Min Typ Max Units
V
OS
TCV
OS
Input Offset Voltage 210mV
Input Offset Voltage 1 µV/°C
Temperature Drift
TCV
OS
Input Offset Voltage 3.3
Drift Over Time
I
B
I
OS
Input Bias Current 0.5 pA
Input Offset Current 0.25 pA
CMRR Common-Mode Rejection Ratio 0V ≤ VCM ≤ 5.0V 70 dB
PSRR Positive Power Supply V
Rejection Ratio
A
V
V
I
I
VOL
OH
OL
S
SC
Gain 125 dB
Output Voltage (High) MIC7211, I
Output Voltage (Low) I
Supply Current V
Short Circuit Current MIC7211, sourcing 150 mA
= VV+/2; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; Note 7; unless noted
OUT
= 5.0V to 10V 90 dB
V+
= 5mA 4.9 4.95 V
LOAD
= 5mA 0.05 0.1 V
LOAD
= low 7 14 µA
OUT
sinking 110 mA
µV
⁄month
DC Electrical Characteristics (10V)
VV+ = +10V, VV– = 0V, VCM = V
Symbol Parameter Condition Min Typ Max Units
V
OS
TCV
TCV
I
B
I
OS
OS
OS
Input Offset Voltage 210mV
Input Offset Voltage 1 µV/°C
Temperature Drift
Input Offset Voltage 3.3
Drift Over Time
Input Bias Current 0.5 pA
Input Offset Current 0.25 pA
CMRR Common-Mode Rejection Ratio 0V ≤ VCM ≤ 10V 75 dB
PSRR Positive Power Supply V
Rejection Ratio
A
V
V
I
I
VOL
OH
OL
S
SC
Gain 125 dB
Output Voltage (High) MIC7211, I
Output Voltage (Low) I
Supply Current V
Short Circuit Current MIC7211, sourcing 165 mA
= VV+/2; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; Note 7; unless noted
OUT
= 5.0V to 10V 90 dB
V+
= 5mA 9.9 9.95 V
LOAD
= 5mA 0.05 0.1 V
LOAD
= low 12 25 µA
OUT
sinking 125 mA
µV
⁄month
June 1999 3 MIC7211/7221
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