NSC LMC7215IM5X, LMC7215IM5, LMC7215IM, LMC7225IMX, LMC7225IM5X Datasheet

September 1999

LMC7215/LMC7225

Micro-Power, Rail-to-Rail CMOS Comparators with Open-Drain/Push-Pull Outputs and TinyPak™ Package

General Description

The LMC7215/LMC7225 are ultra low power comparators with a maximum of 1 µA power supply current. They are designed to operate over a wide range of supply voltages, from 2V to 8V.

The LMC7215/LMC7225 have a greater than rail-to-rail common mode voltage range. This is a real advantage in single supply applications.

The LMC7215 features a push-pull output stage. This feature allows operation with absolute minimum amount of power consumption when driving any load.

The LMC7225 features an open drain output. By connecting an external resistor, the output of the comparator can be used as a level shifter to any desired voltage to as high as 15V.

The LMC7215/LMC7225 are designed for systems where low power consumption is the critical parameter.

Guaranteed operation over the full supply voltage range of 2.7V to 5V and rail-to-rail performance makes this comparator ideal for battery-powered applications.

Features

(Typical unless otherwise noted)

nUltra low power consumption 0.7 µA

nWide range of supply voltages 2V to 8V

nInput common-mode range beyond V+ and V−

nOpen collector and push-pull output

nHigh output current drive: (@ VS = 5V) 45 mA

nPropagation delay (@ VS = 5V, 10 mV overdrive) 25 µs

nTiny SOT23-5 package

nLatch-up resistance >300 mA

Applications

nLaptop computers

nMobile phones

nMetering systems

nHand-held electronics

nRC timers

nAlarm and monitoring circuits

nWindow comparators, multivibrators

Connection Diagrams

8±Pin SO±8

5±Pin SOT23-5

DS012853-2

Top View

DS012853-1

Top View

TinyPak™ is a trademark of National Semiconductor Corporation.

Pull-Drain/Push-Open with Comparators CMOS Rail-to-Rail Power,-Micro LMC7215/LMC7225

Package TinyPak and Outputs

© 1999 National Semiconductor Corporation

DS012853

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Ordering Information

Package	Ordering	NSC Drawing	Package	Supplied As
	Information	Number	Marking
5-Pin SOT 23-5	LMC7215IM5	MA05A	C02B	1k Tape and Reel
5-Pin SOT 23-5	LMC7225IM5	MA05A	C03B	1k Tape and Reel
5-Pin SOT 23-5	LMC7215IM5X	MA05A	C02B	3k Tape and Reel
5-Pin SOT 23-5	LMC7225IM5X	MA05A	C03B	3k Tape and Reel
8-Pin SO-8	LMC7215IM	M08A	LMC7215IM	Rails
8-Pin SO-8	LMC7225IM	M08A	LMC7225IM	Rails
8-Pin SO-8	LMC7215IMX	M08A	LMC7215IM	2.5k Tape and Reel
8-Pin SO-8	LMC7225IMX	M08A	LMC7225IM	2.5k Tape and Reel

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

(soldering, 10 sec)	260ÊC
Storage Temperature Range	−65ÊC to +150ÊC
Junction Temperature (Note 4)	150ÊC

ESD Tolerance (Note 2)	2 kV	Operating Ratings(Note 1)
Differential Input Voltage	(VCC)+0.3V to (−V CC)−0.3V	Supply Voltage	2V ≤ VCC ≤ 8V
Voltage at Input/Output Pin	(VCC)+0.3V to (−V CC)−0.3V	Junction Temperature Range
Supply Voltage (V+±V− )	10V	LMC7215IM, LMC7225IM	−40ÊC ≤ TJ ≤ +85ÊC
Current at Input Pin	±5 mA	Thermal Resistance (θJA)
Current at Output Pin (Note 3)	±30 mA	M Package, 8-Pin Surface Mount	165ÊC/W
Current at Power Supply Pin	40 mA	SOT23-5 Package	325ÊC/W
Lead Temperature

2.7V to 5V Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 2.7V to 5V, V− = 0V, VCM = VO = V+/2. Boldface limits apply at the temperature extremes.

			Typ	LMC7215	LMC7225
Symbol	Parameter	Conditions	(Note 5)	Limit	Limit	Units
				(Note 6)	(Note 6)
VOS	Input Offset Voltage		1	6	6	mV
				8	8	max
TCVOS	Input Offset Voltage		2			µV/ÊC
	Average Drift
IB	Input Current		5			fA
IOS	Input Offset Current		1			fA
CMRR	Common Mode	(Note 7)	80	60	60	dB
	Rejection Ratio					min
PSRR	Power Supply	V+ = 2.2V to 8V	90	60	60	dB
	Rejection Ratio					min
AV	Voltage Gain		140			dB
CMVR	Input Common-Mode	V+ = 2.7V	3.0	2.9	2.9	V
	Voltage Range	CMRR > 50 dB		2.7	2.7	min
		V+ = 2.7V	−0.2	0.0	0.0	V
		CMRR > 50 dB		0.2	0.2	max
		V+ = 5.0V	5.3	5.2	5.2	V
		CMRR > 50 dB		5.0	5.0	min
		V+ = 5.0V	−0.3	−0.2	−0.2	V
		CMRR > 50 dB		0.0	0.0	max
VOH	Output Voltage High	V+ = 2.2V	2.05	1.8	NA	V
		IOH = 1.5 mA		1.7		min
		V+ = 2.7V	2.05	2.3	NA	V
		IOH = 2.0 mA		2.2		min
		V+ = 5.0V	4.8	4.6	NA	V
		IOH = 4.0 mA		4.5		min
VOL	Output Voltage Low	V+ = 2.2V	0.17	0.4	0.4	V
		IOH = 1.5 mA		0.5	0.5	max
		V+ = 2.7V	0.17	0.4	0.4	V
		IOH = 2.0 mA		0.5	0.5	max
		V+ = 5.0V	0.2	0.4	0.4	V
		IOH = 4.0 mA		0.5	0.5	max
ISC+	Output Short Circuit	V+ = 2.7V, Sourcing	15		NA	mA
	Current (Note 10)	V+ = 5.0V, Sourcing	50		NA	mA
ISC−	Output Short Circuit	V+ = 2.7V, Sinking	12			mA

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2.7V to 5V Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 2.7V to 5V, V− = 0V, VCM = VO = V+/2. Boldface limits apply at the temperature extremes.

			Typ	LMC7215	LMC7225
Symbol	Parameter	Conditions	(Note 5)	Limit	Limit	Units
				(Note 6)	(Note 6)
	Current (Note 10)	V+ = 5.0V, Sinking	30			mA
ILeakage	Output Leakage Current	V+ = 2.2V				nA
		VIN+ = 0.1V, VIN− = 0V,	0.01	NA	500	max
		VOUT = 15V
IS	Supply Current	V+ = 5.0V	0.7	1	1	µA
		VIN+ = 5V, VIN− = 0V		1.2	1.2	max

AC Electrical Characteristics

Unless otherwise specified, TJ = 25ÊC, V+ = 5V, V−			= 0V, VCM = V+/2
					LMC7215	LMC7225
Symbol	Parameter		Conditions		Typ	Typ	Units
					(Note 5)	(Notes 5, 8)
trise	Rise Time	Overdrive = 10 mV (Note 8)			1	12.2	µs
tfall	Fall Time	Overdrive = 10 mV (Note 8)			0.4	0.35	µs
tPHL	Propagation Delay	(Notes 8, 9)		Overdrive = 10 mV	24	24	µs
	(High to Low)			Overdrive = 100 mV	12	12
		V+ = 2.7V		Overdrive = 10 mV	17	17	µs
		(Notes 8, 9)		Overdrive = 100 mV	11	11
tPLH	Propagation Delay	(Notes 8, 9)		Overdrive = 10 mV	24	29	µs
	(Low to High)			Overdrive = 100 mV	12	17
		V+ = 2.7V		Overdrive = 10 mV	17	22	µs
		(Notes 8, 9)		Overdrive = 100 mV	11	16

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.

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: CMRR measured at VCM = 0V to 2.5V and 2.5V to 5V when VS = 5V, VCM = 0.2V to 1.35V and 1.35V to 2.7V when VS = 2.7V. This eliminates units that have large VOS at the VCM extremes and low or opposite VOS at VCM = VS/2.

Note 8: All measurements made at 10 kHz. A 100 kΩ pull-up resistor was used when measuring the LMC7225. CLOAD = 50 pF including the test jig and scope probe. The rise times of the LMC7225 are a function of the R-C time constant.

Note 9: Input step voltage for the propagation measurements is 100 mV.

Note 10: Do not short the output of the LMC7225 to voltages greater than 10V or damage may occur.

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