NSC LMC7211MWC, LMC7211BIMX, LMC7211BIM5X, LMC7211BIM5, LMC7211BIM Datasheet
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September 1999
LMC7211
Tiny CMOS Comparator with Rail-to-Rail Input and
Push-Pull Output
General Description
The LMC7211 is a micropower CMOS comparator available in the space saving SOT23-5 package. This makes the comparator ideal for space and weight critical designs. The LMC7211 is supplied in two offset voltage grades, 5 mV and 15 mV.
The main benefits of the Tiny package are most apparent in small portable electronic devices, such as mobile phones, pagers, notebook computers, personal digital assistants, and PCMCIA cards. The rail-to-rail input voltage makes the LMC7211 a good choice for sensor interfacing, such as light detector circuits, optical and magnetic sensors, and alarm and status circuits.
The Tiny Comparator's outside dimensions (length x width x height) of 3.05mm x 3.00mm x 1.43mm allow it to fit into tight spaces on PC boards.
Features
nTiny SOT 23-5 package saves space
nPackage is less than 1.43 mm thick
nGuaranteed specs at 2.7V, 5V, 15V supplies
nTypical supply current 7 µA at 5V
nResponse time of 4 µs at 5V
nLMC7211 Ð push-pull output
nInput common-mode range beyond V− and V+
nLow input current
Applications
nBattery Powered Products
nNotebooks and PDAs
nPCMCIA cards
nMobile Communications
nAlarm and Security circuits
nDirect Sensor Interface
nReplaces amplifiers used as comparators with better performance and lower current
Connection Diagrams
8-Pin SO-8 |
5-Pin SOT23-5 |
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DS012337-1 |
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DS012337-2 |
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Top View |
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Top View |
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Package |
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Ordering |
NSC Drawing |
Package |
Transport Media |
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Information |
Number |
Marking |
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LMC7211AIM |
M08A |
LM7211AIM |
Rails |
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8-Pin SO-8 |
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LMC7211AIMX |
M08A |
LM7211AIM |
2.5k Units Tape and Reel |
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LMC7211BIM |
M08A |
LM7211BIM |
Rails |
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LMC7211BIMX |
M08A |
LM7211BIM |
2.5k Units tape and Reel |
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LMC7211AIM5 |
MA05A |
C00A |
1k Units Tape and Reel |
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5-Pin SOT 23-5 |
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LMC7211AIM5X |
MA05A |
C00A |
3k Units Tape and Reel |
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LMC7211BIM5 |
MA05A |
C00B |
1k Units Tape and Reel |
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LMC7211BIM5X |
MA05A |
C00B |
3k Units Tape and Reel |
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Output Pull-Push and Input Rail-to-Rail with Comparator CMOS Tiny LMC7211
© 1999 National Semiconductor Corporation |
DS012337 |
www.national.com |
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
Storage Temperature Range |
−65ÊC to +150ÊC |
Junction Temperature |
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(Note 4) |
150ÊC |
ESD Tolerance (Note 2) |
2 kV |
Differential Input Voltage |
(VCC) +0.3V to (−V CC)−0.3V |
Voltage at Input/Output Pin |
(VCC) + 0.3V to (−V CC)−0.3V |
Supply Voltage (V+±V− ) |
16V |
Current at Input Pin (Note 7) |
±5 mA |
Current at Output Pin |
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(Notes 3, 8) |
±30 mA |
Current at Power Supply Pin |
40 mA |
Lead Temperature |
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(soldering, 10 sec) |
260ÊC |
Operating Ratings (Note 1)
Supply Voltage |
2.7 ≤ VCC ≤ 15V |
Junction Temperature Range |
−40ÊC ≤ TJ ≤ +85ÊC |
LMC7211AI, LMC7211BI |
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Thermal Resistance (θJA) |
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SO-8 Package, |
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8-Pin Surface Mount |
180ÊC/W |
M05A Package, |
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5-Pin Surface Mount |
325ÊC/W |
2.7V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 2.7V, V− |
= 0V, VCM = VO = V+/2. Boldface limits apply |
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at the temperature extremes. |
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Typ |
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LMC7211AI |
LMC7211BI |
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Symbol |
Parameter |
Conditions |
(Note 5) |
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Limit |
Limit |
Units |
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(Note 6) |
(Note 6) |
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VOS |
Input Offset Voltage |
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3 |
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5 |
15 |
mV |
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8 |
18 |
max |
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TCVOS |
Input Offset Voltage |
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1.0 |
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µV/ÊC |
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Temperature Drift |
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Input Offset Voltage |
(Note 10) |
3.3 |
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µV/Month |
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Average Drift |
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IB |
Input Current |
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0.04 |
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pA |
IOS |
Input Offset Current |
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0.02 |
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pA |
CMRR |
Common Mode |
0V ≤ VCM ≤ 2.7V |
75 |
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dB |
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Rejection Ratio |
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PSRR |
Power Supply |
2.7V ≤ V+ ≤ 15V |
80 |
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dB |
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Rejection Ratio |
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AV |
Voltage Gain |
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100 |
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dB |
CMVR |
Input Common-Mode |
CMRR > 55 dB |
3.0 |
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2.9 |
2.9 |
V |
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Voltage Range |
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2.7 |
2.7 |
min |
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CMRR > 55 dB |
−0.3 |
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−0.2 |
−0.2 |
V |
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0.0 |
0.0 |
max |
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VOH |
Output Voltage High |
Iload = 2.5 mA |
2.5 |
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2.4 |
2.4 |
V |
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2.3 |
2.3 |
min |
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VOL |
Output Voltage Low |
Iload = 2.5 mA |
0.2 |
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0.3 |
0.3 |
V |
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0.4 |
0.4 |
max |
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IS |
Supply Current |
VOUT = Low |
7 |
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12 |
12 |
µA |
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14 |
14 |
max |
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5.0V and 15.0V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 5.0V and 15V, V− = 0V, VCM = VO = V+/2. Boldface limits apply at the temperature extremes.
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Typ |
LMC7211AI |
LMC7211BI |
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Symbol |
Parameter |
Conditions |
(Note 5) |
Limit |
Limit |
Units |
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(Note 6) |
(Note 6) |
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VOS |
Input Offset Voltage |
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3 |
5 |
15 |
mV |
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8 |
18 |
max |
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www.national.com |
2 |
5.0V and 15.0V Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 5.0V and 15V, V− = 0V, VCM = VO = V+/2. Boldface limits apply at the temperature extremes.
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Typ |
LMC7211AI |
LMC7211BI |
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Symbol |
Parameter |
Conditions |
(Note 5) |
Limit |
Limit |
Units |
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(Note 6) |
(Note 6) |
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TCVOS |
Input Offset Voltage |
V+ = 5V |
1.0 |
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µV/ÊC |
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Temperature Drift |
V+ = 15V |
4.0 |
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Input Offset Voltage |
V+ = 5V |
3.3 |
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µV/Month |
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Average Drift |
V+ = 15V |
4.0 |
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IB |
Input Current |
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0.04 |
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pA |
IOS |
Input Offset Current |
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0.02 |
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pA |
CMRR |
Common Mode |
V+ = 5.0V |
75 |
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dB |
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Rejection Ration |
V+ = 15.0V |
82 |
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dB |
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PSRR |
Power Supply |
5V ≤ V+ ≤ 10V |
80 |
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dB |
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Rejection Ratio |
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AV |
Voltage Gain |
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100 |
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dB |
CMVR |
Input Common-Mode |
V+ = 5.0V |
5.3 |
5.2 |
5.2 |
V |
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Voltage Range |
CMRR > 55 dB |
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5.0 |
5.0 |
min |
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V+ = 5.0V |
−0.3 |
−0.2 |
−0.2 |
V |
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CMRR > 55 dB |
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0.0 |
0.0 |
max |
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V+ = 15.0V |
15.3 |
15.2 |
15.2 |
V |
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CMRR > 55 dB |
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15.0 |
15.0 |
min |
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V+ = 15.0V |
−0.3 |
−0.2 |
−0.2 |
V |
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CMRR > 55 dB |
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0.0 |
0.0 |
max |
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VOH |
Output Voltage High |
V+ = 5V |
4.8 |
4.6 |
4.6 |
mV |
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Iload = 5 mA |
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4.45 |
4.45 |
min |
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V+ = 15V |
14.8 |
14.6 |
14.6 |
mV |
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Iload = 5 mA |
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14.45 |
14.45 |
min |
VOL |
Output Voltage Low |
V+ = 5V |
0.2 |
0.40 |
0.40 |
mV |
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Iload = 5 mA |
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0.55 |
0.55 |
max |
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V+ = 15V |
0.2 |
0.40 |
0.40 |
mV |
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Iload = 5 mA |
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0.55 |
0.55 |
max |
IS |
Supply Current |
VOUT = Low |
7 |
14 |
14 |
µA |
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18 |
18 |
max |
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ISC |
Short Circuit Current |
Sourcing |
30 |
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mA |
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Sinking (Note 8) |
45 |
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mA |
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AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 5V, V− = 0V, VCM = VO = V+/2. Boldface limits apply at the temperature extreme.
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Typ |
LMC7211AI |
LMC7211BI |
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Symbol |
Parameter |
Conditions |
(Note 5) |
Limit |
Limit |
Units |
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(Note 6) |
(Note 6) |
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trise |
Rise Time |
f = 10 kHz, Cl = 50 pF, |
0.3 |
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µs |
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Overdrive = 10 mV (Note 9) |
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tfall |
Fall Time |
f = 10 kHz, Cl = 50 pF, |
0.3 |
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µs |
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Overdrive = 10 mV (Note 9) |
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3 |
www.national.com |
AC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 5V, V− = 0V, VCM = VO = V+/2. Boldface limits apply at the temperature extreme.
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Typ |
LMC7211AI |
LMC7211BI |
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Symbol |
Parameter |
Conditions |
(Note 5) |
Limit |
Limit |
Units |
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(Note 6) |
(Note 6) |
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tPHL |
Propagation Delay |
f = 10 kHz, |
10 mV |
10 |
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µs |
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(High to Low) |
Cl = 50 pF |
100 mV |
4 |
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(Note 11) |
(Note 9) |
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V+ = 2.7V, |
10 mV |
10 |
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µs |
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f = 10 kHz, |
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100 mV |
4 |
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Cl = 50 pF |
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(Note 9) |
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tPLH |
Propagation Delay |
f = 10 kHz, |
10 mV |
6 |
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µs |
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(Low to High) |
Cl = 50p |
100 mV |
4 |
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(Note 11) |
(Note 9) |
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V+ = 2.7V, |
10 mV |
7 |
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µs |
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f = 10 kHz, |
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100 mV |
4 |
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Cl = 50 pF |
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(Note 9) |
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Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human body model, 1.5 kΩ in series with 100 pF.
Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150ÊC. Output currents in excess of ±30 mA over long term may adversely affect reliability.
Note 4: The maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(max) − T A)/θJA.All numbers apply for packages soldered directly into a PC board.
Note 5: Typical values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: Limiting input pin current is only necessary for input voltages that exceed absolute maximum input voltage rating.
Note 8: Do not short circuit output to V+, when V+ is greater than 12V or reliability will be adversely affected.
Note 9: CL includes the probe and jig capacitance.
Note 10: Input offset voltage average drift is calculated by dividing the accelerated operating life VOS drift by the equivalent operational time. This represents worst case input conditions and includes the first 30 days of drift.
Note 11: Input step voltage for propagation delay measurement is 2V.
Typical Performance Characteristics Single Supply TA = 25ÊC unless specified
Supply Current vs |
Supply Current vs |
Supply Current vs |
Supply Voltage |
Temperature while Sourcing |
Temperature while Sinking |
DS012337-15 |
DS012337-16 |
DS012337-17 |
www.national.com |
4 |
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