NSC LMC6482IN, LMC6482IMX, LMC6482IMMX, LMC6482AIN, LMC6482AIMX Datasheet

November 1997

LMC6482

CMOS Dual Rail-To-Rail Input and Output Operational

Amplifier

General Description

The LMC6482 provides a common-mode range that extends to both supply rails. This rail-to-rail performance combined with excellent accuracy, due to a high CMRR, makes it unique among rail-to-rail input amplifiers.

It is ideal for systems, such as data acquisition, that require a large input signal range. The LMC6482 is also an excellent upgrade for circuits using limited common-mode range amplifiers such as the TLC272 and TLC277.

Maximum dynamic signal range is assured in low voltage and single supply systems by the LMC6482's rail-to-rail output swing. The LMC6482's rail-to-rail output swing is guaranteed for loads down to 600Ω.

Guaranteed low voltage characteristics and low power dissipation make the LMC6482 especially well-suited for battery-operated systems.

LMC6482 is also available in MSOP package which is almost half the size of a SO-8 device.

See the LMC6484 data sheet for a Quad CMOS operational amplifier with these same features.

Features

(Typical unless otherwise noted)

nRail-to-Rail Input Common-Mode Voltage Range (Guaranteed Over Temperature)

nRail-to-Rail Output Swing (within 20 mV of supply rail, 100 kΩ load)

nGuaranteed 3V, 5V and 15V Performance

nExcellent CMRR and PSRR: 82 dB

nUltra Low Input Current: 20 fA

nHigh Voltage Gain (RL = 500 kΩ): 130 dB

nSpecified for 2 kΩ and 600Ω loads

nAvailable in MSOP Package

Applications

nData Acquisition Systems

nTransducer Amplifiers

nHand-held Analytic Instruments

nMedical Instrumentation

nActive Filter, Peak Detector, Sample and Hold, pH Meter, Current Source

nImproved Replacement for TLC272, TLC277

3V Single Supply Buffer Circuit

Rail-To-Rail Input

Rail-To-Rail Output

DS011713-2

DS011713-3

DS011713-1

Connection Diagram

DS011713-4

Amplifier Operational Output and Input Rail-To-Rail Dual CMOS LMC6482

© 1999 National Semiconductor Corporation

DS011713

www.national.com

Ordering Information

Package	Temperature Range		NSC	Transport	Package Marking
			Drawing	Media
	Military	Industrial
	−55ÊC to +125ÊC	−40ÊC to +85ÊC
8-Pin	LMC6482MN	LMC6482AIN,	N08E	Rail	LMC6482MN,
Molded DIP		LMC6482IN			LMC6482AIN, LMC6482IN
8-pin		LMC6482AIM,	M08A	Rail	LMC6482AIM, LMC6482IM
Small Outline		LMC6482IM		Tape and Reel
8-pin	LMC6482AMJ/883		J08A	Rail	LMC6482AMJ/883Q5962-9453401MPA
Ceramic DIP
8-pin		LMC6482IMM	MUA08A	Rail	A10
Mini SO				Tape and Reel

www.national.com

2

Absolute Maximum Ratings (Note 1)

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

ESD Tolerance (Note 2)	1.5 kV
Differential Input Voltage	±Supply Voltage
Voltage at Input/Output Pin	(V+) +0.3V, (V− ) −0.3V
Supply Voltage (V+ − V − )	16V
Current at Input Pin (Note 12)	±5 mA
Current at Output Pin
(Notes 3, 8)	±30 mA
Current at Power Supply Pin	40 mA
Lead Temperature
(Soldering, 10 sec.)	260ÊC

Storage Temperature Range	−65ÊC to +150ÊC
Junction Temperature (Note 4)	150ÊC

Operating Ratings (Note 1)

Supply Voltage	3.0V £ V+ £ 15.5V
Junction Temperature Range
LMC6482AM	−55ÊC	£ TJ £ +125ÊC
LMC6482AI, LMC6482I	−40ÊC	£ TJ £ +85ÊC
Thermal Resistance (qJA)
N Package, 8-Pin Molded DIP		90ÊC/W
M Package, 8-Pin Surface Mount		155ÊC/W
MSOP package, 8-Pin Mini SO		194ÊC/W

DC Electrical Characteristics

	Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 5V, V−						= 0V, VCM = VO = V+/2 and RL > 1M. Boldface
	limits apply at the temperature extremes.
Symbol		Parameter	Conditions			Typ		LMC6482AI	LMC6482I	LMC6482M	Units
						(Note 5)		Limit	Limit	Limit
								(Note 6)	(Note 6)	(Note 6)
	VOS	Input Offset Voltage				0.11		0.750	3.0	3.0	mV
								1.35	3.7	3.8	max
	TCVOS	Input Offset Voltage				1.0					µV/ÊC
		Average Drift
	IB	Input Current	(Note 13)			0.02		4.0	4.0	10.0	pA
											max
	IOS	Input Offset Current	(Note 13)			0.01		2.0	2.0	5.0	pA
											max
	CIN	Common-Mode				3					pF
		Input Capacitance
	RIN	Input Resistance				>10					TeraW
	CMRR	Common Mode	0V £ VCM £ 15.0V			82		70	65	65	dB
		Rejection Ratio	V+ = 15V					67	62	60	min
			0V £ VCM £ 5.0V			82		70	65	65
			V+ = 5V					67	62	60
	+PSRR	Positive Power Supply	5V £ V+ £ 15V, V− = 0V			82		70	65	65	dB
		Rejection Ratio	VO = 2.5V					67	62	60	min
	−PSRR	Negative Power Supply	−5V £ V− £ −15V, V + = 0V			82		70	65	65	dB
		Rejection Ratio	VO = −2.5V					67	62	60	min
	VCM	Input Common-Mode	V+ = 5V and 15V			V− − 0.3		− 0.25	− 0.25	− 0.25	V
		Voltage Range	For CMRR ³ 50 dB					0	0	0	max
						V+ + 0.3V		V+ + 0.25	V+ + 0.25	V+ + 0.25	V
								V+	V+	V+	min
	AV	Large Signal	RL = 2 kW		Sourcing	666		140	120	120	V/mV
		Voltage Gain	(Notes 7, 13)					84	72	60	min
					Sinking	75		35	35	35	V/mV
								20	20	18	min
			RL = 600W		Sourcing	300		80	50	50	V/mV
			(Notes 7, 13)					48	30	25	min
					Sinking	35		20	15	15	V/mV
								13	10	8	min

3	www.national.com

DC Electrical Characteristics (Continued)

	Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 5V, V−				= 0V, VCM = VO = V+/2 and RL > 1M. Boldface
	limits apply at the temperature extremes.
Symbol		Parameter	Conditions	Typ		LMC6482AI	LMC6482I	LMC6482M	Units
				(Note 5)		Limit	Limit	Limit
						(Note 6)	(Note 6)	(Note 6)
	VO	Output Swing	V+ = 5V	4.9		4.8	4.8	4.8	V
			RL = 2 kΩ to V+/2			4.7	4.7	4.7	min
				0.1		0.18	0.18	0.18	V
						0.24	0.24	0.24	max
			V+ = 5V	4.7		4.5	4.5	4.5	V
			RL = 600Ω to V+/2			4.24	4.24	4.24	min
				0.3		0.5	0.5	0.5	V
						0.65	0.65	0.65	max
			V+ = 15V	14.7		14.4	14.4	14.4	V
			RL = 2 kΩ to V+/2			14.2	14.2	14.2	min
				0.16		0.32	0.32	0.32	V
						0.45	0.45	0.45	max
			V+ = 15V	14.1		13.4	13.4	13.4	V
			RL = 600Ω to V+/2			13.0	13.0	13.0	min
				0.5		1.0	1.0	1.0	V
						1.3	1.3	1.3	max
	ISC	Output Short Circuit	Sourcing, VO = 0V	20		16	16	16	mA
		Current				12	12	10	min
		V+ = 5V	Sinking, VO = 5V	15		11	11	11	mA
						9.5	9.5	8.0	min
	ISC	Output Short Circuit	Sourcing, VO = 0V	30		28	28	28	mA
		Current				22	22	20	min
		V+ = 15V	Sinking, VO = 12V	30		30	30	30	mA
			(Note 8)			24	24	22	min
	IS	Supply Current	Both Amplifiers	1.0		1.4	1.4	1.4	mA
			V+ = +5V, VO = V+/2			1.8	1.8	1.9	max
			Both Amplifiers	1.3		1.6	1.6	1.6	mA
			V+ = 15V, VO			1.9	1.9	2.0	max
			= V+/2

AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 5V, V−				= 0V, VCM = VO = V+/2, and RL > 1M. Boldface
limits apply at the temperature extremes.
Symbol	Parameter	Conditions	Typ		LMC6482AI	LMC6482I	LMC6482M	Units
			(Note 5)		Limit	Limit	Limit
					(Note 6)	(Note 6)	(Note 6)
SR	Slew Rate	(Note 9)	1.3		1.0	0.9	0.9	V/µs
					0.7	0.63	0.54	min
GBW	Gain-Bandwidth Product	V+ = 15V	1.5					MHz
φm	Phase Margin		50					Deg
Gm	Gain Margin		15					dB
	Amp-to-Amp Isolation	(Note 10)	150					dB
en	Input-Referred	F = 1 kHz	37					nV/ÖHz
	Voltage Noise	Vcm = 1V
in	Input-Referred	F = 1 kHz	0.03					pA/ÖHz
	Current Noise

www.national.com

4

AC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 5V, V−				= 0V, VCM = VO = V+/2, and RL > 1M. Boldface
limits apply at the temperature extremes.
Symbol	Parameter	Conditions	Typ		LMC6482AI	LMC6482I	LMC6482M	Units
			(Note 5)		Limit	Limit	Limit
					(Note 6)	(Note 6)	(Note 6)
T.H.D.	Total Harmonic Distortion	F = 10 kHz, AV = −2						%
		RL = 10 kW, VO = 4.1 VPP	0.01
		F = 10 kHz, AV = −2
		RL = 10 kW, VO = 8.5 VPP	0.01					%
		V+ = 10V

DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 3V, V−				= 0V, VCM = VO = V+/2 and RL > 1M.
Symbol	Parameter	Conditions	Typ	LMC6482AI	LMC6482I	LMC6482M	Units
			(Note 5)	Limit	Limit	Limit
				(Note 6)	(Note 6)	(Note 6)
VOS	Input Offset Voltage		0.9	2.0	3.0	3.0	mV
				2.7	3.7	3.8	max
TCVOS	Input Offset Voltage		2.0				µV/ÊC
	Average Drift
IB	Input Bias Current		0.02				pA
IOS	Input Offset Current		0.01				pA
CMRR	Common Mode	0V £ VCM £ 3V	74	64	60	60	dB
	Rejection Ratio						min
PSRR	Power Supply	3V £ V+ £ 15V, V− = 0V	80	68	60	60	dB
	Rejection Ratio						min
VCM	Input Common-Mode	For CMRR ³ 50 dB	V− −0.25	0	0	0	V
	Voltage Range						max
			V+ + 0.25	V+	V+	V+	V
							min
VO	Output Swing	RL = 2 kW to V+/2	2.8				V
			0.2				V
		RL = 600W to V+/2	2.7	2.5	2.5	2.5	V
							min
			0.37	0.6	0.6	0.6	V
							max
IS	Supply Current	Both Amplifiers	0.825	1.2	1.2	1.2	mA
				1.5	1.5	1.6	max

AC Electrical Characteristics

Unless otherwise specified, V+ = 3V, V−			= 0V, VCM = VO = V+/2, and RL > 1M.
Symbol	Parameter		Conditions	Typ		LMC6482AI	LMC6482I	LMC6482M	Units
				(Note 5)		Limit	Limit	Limit
						(Note 6)	(Note 6)	(Note 6)
SR	Slew Rate		(Note 11)	0.9					V/µs
GBW	Gain-Bandwidth Product			1.0					MHz
T.H.D.	Total Harmonic Distortion		F = 10 kHz, AV = −2	0.01					%
			RL = 10 kW, VO = 2 VPP

Note 1: Absolute Maximum Ratings indicate limts 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. All pins rated per method 3015.6 of MIL-STD-883. This is a Class 1 device rating.

5	www.national.com

AC Electrical Characteristics (Continued)

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: V+ = 15V, VCM = 7.5V and RL connected to 7.5V. For Sourcing tests, 7.5V ≤ VO ≤ 11.5V. For Sinking tests, 3.5V ≤ VO ≤ 7.5V.

Note 8: Do not short circuit output to V+, when V+ is greater than 13V or reliability will be adversely affected.

Note 9: V+ = 15V. Connected as Voltage Follower with 10V step input. Number specified is the slower of either the positive or negative slew rates.

Note 10: Input referred, V+ = 15V and RL = 100 kΩ connected to 7.5V. Each amp excited in turn with 1 kHz to produce VO = 12 VPP.

Note 11: Connected as voltage Follower with 2V step input. Number specified is the slower of either the positive or negative slew rates.

Note 12: Limiting input pin current is only necessary for input voltages that exceed absolute maximum input voltage ratings.

Note 13: Guaranteed limits are dictated by tester limitations and not device performance. Actual performance is reflected in the typical value.

Note 14: For guaranteed Military Temperature parameters see RETS6482X.

Typical Performance Characteristics VS = +15V, Single Supply, TA = 25ÊC unless otherwise specified

Supply Current vs	Input Current vs	Sourcing Current vs
Supply Voltage	Temperature	Output Voltage

DS011713-40	DS011713-41	DS011713-42

Sourcing Current vs	Sourcing Current vs	Sinking Current vs
Output Voltage	Output Voltage	Output Voltage

DS011713-43

DS011713-44

DS011713-45

www.national.com

6

Typical Performance Characteristics VS = +15V, Single Supply, TA = 25ÊC unless otherwise specified (Continued)

Sinking Current vs	Sinking Current vs	Output Voltage Swing vs
Output Voltage	Output Voltage	Supply Voltage

DS011713-46		DS011713-47
		DS011713-48
Input Voltage Noise	Input Voltage Noise	Input Voltage Noise
vs Frequency	vs Input Voltage	vs Input Voltage

DS011713-49 DS011713-50 DS011713-51

Input Voltage Noise	Crosstalk Rejection
vs Input Voltage	vs Frequency

DS011713-52

DS011713-53

7	www.national.com