MOTOROLA LF442CN, LF442CDR2, LF442CD, LF444CN, LF444CD Datasheet

Low Power JFET Input

Operational Amplifiers

These JFET input operational amplifiers are designed for low power applications. They feature high input impedance, low input bias current and low input offset current. Advanced design techniques allow for higher slew rates, gain bandwidth products and output swing. The LF441C device provides for the external null adjustment of input offset voltage.

These devices are specified over the commercial temperature range. All are available in plastic dual in±line and SOIC packages.

•Low Supply Current: 200 μA/Amplifier

•Low Input Bias Current: 5.0 pA

•High Gain Bandwidth: 2.0 MHz

•High Slew Rate: 6.0 V/μs

•High Input Impedance: 1012 Ω

•Large Output Voltage Swing: ±14 V

•Output Short Circuit Protection

Representative Schematic Diagram
	(Each Amplifier)
					VCC
J1	J2				Q7
			D2	R3	R4
Inputs
	+				Output
				D1
	Q3	Q4	C1
Q1	Q2		Q5	C2
					Q6
R1	R2	R5

				VEE
1 *	5 *
*Null adjustment pins for LF441 only.	+	5	1.5 kΩ	VEE
	1	100 kΩ
	LF441C input offset voltage
	null adjust circuit

ORDERING INFORMATION

		Operating
Device	Function	Temperature Range	Package
LF441CD	Single		SO±8
LF441CN			Plastic DIP
LF442CD	Dual	TA = 0° to +70°C	SO±8
LF442CN			Plastic DIP
LF444CD	Quad		SO±14
LF444CN			Plastic DIP

Order this document by LF441C/D

LF441C

LF442C

LF444C

LOW POWER

JFET INPUT

OPERATIONAL AMPLIFIERS

SEMICONDUCTOR

TECHNICAL DATA

8	8
1	1
N SUFFIX	D SUFFIX
PLASTIC PACKAGE	PLASTIC PACKAGE
CASE 626	CASE 751
	(SO±8)

PIN CONNECTIONS

Offset Null	1				8	NC
	2	±			7	V
Inputs		+				CC
	3				6	Output
VEE 4					5	Offset Null
(Single, Top View)
Output 1 1					8	V
		1				CC
	2				7	Output 2
Inputs 1		±
	3	+		±	6	Inputs 2
VEE 4			2		5
				+
(Dual, Top View)

	14			14
	1					1
	N SUFFIX				D SUFFIX
	PLASTIC PACKAGE			PLASTIC PACKAGE
	CASE 646				CASE 751A
						(SO±14)
		PIN CONNECTIONS
	Output 1	1			14	Output 4
		2	±	±	13
	Inputs 1	3	1	4	12	Inputs 4
	VCC		+	+		VEE
		4			11
	Inputs 2	5	+	+ 10		Inputs 3
		6	2	3	9
			±	±
	Output 2	7			8	Output 3
			(Quad, Top View)
	Motorola, Inc. 1996					Rev 0

LF441C LF442C LF444C

MAXIMUM RATINGS

Rating

Symbol

Value

Unit

Supply Voltage (from VCC to VEE)

VS

+36

V

Input Differential Voltage Range (Note 1)

VIDR

±30

V

Input Voltage Range (Notes 1 and 2)

VIR

±15

V

Output Short Circuit Duration (Note 3)

tSC

Indefinite

sec

Operating Junction Temperature (Note 3)

TJ

+150

°C

Storage Temperature Range

Tstg

±60 to +150

°C

NOTES: 1. Differential voltages

are

at the noninverting

input

terminal

with respect to the inverting

input terminal.

2. The magnitude of

the

input

voltage must

never

exceed

the

magnitude of the

supply

or 15 V, whichever is less.

3. Power dissipation must

be

considered to

ensure

maximum

junction temperature

(TJ)

is not exceeded (see Figure 1).

DC ELECTRICAL CHARACTERISTICS (VCC = +15 V, VEE = ±15 V, TA = 0° to 70°C, unless otherwise noted.)

Characteristic

Symbol

Min

Typ

Max

Unit

Input Offset Voltage (RS = 10 kΩ, VO = 0 V)

VIO

mV

Single:

TA = +25°C

±

3.0

5.0

TA = 0° to +70°C

±

±

7.5

Dual:

TA = +25°C

±

3.0

5.0

TA = 0° to +70°C

±

±

7.5

Quad:

TA = +25°C

±

3.0

10

TA = 0° to +70°C

±

±

12

Average Temperature Coefficient of Offset Voltage

VIO/

T

±

10

±

μV/°C

(RS = 10 kΩ, VO = 0 V)

Input Offset Current (VCM = 0 V, VO = 0 V)

IIO

TA = +25°C

±

0.5

50

pA

TA = 0° to +70°C

±

±

1.5

nA

Input Bias Current (VCM = 0 V, VO = 0 V)

IIB

TA = +25°C

±

3.0

100

pA

TA = 0° to +70°C

±

±

3.0

nA

Common Mode Input Voltage Range (TA = +25°C)

VICR

±

+14.5

+11

V

±11

±12

±

Large Signal Voltage Gain (VO = ±10 V, RL = 10 kΩ)

AVOL

V/mV

TA = +25°C

25

60

±

TA = 0° to +70°C

15

±

±

Output Voltage Swing (RL = 10 kΩ)

VO +

+12

+14

±

V

VO ±

±

±14

±12

Common Mode Rejection (RS ≤ 10 kΩ, VCM = VICR, VO = 0 V)

CMR

70

86

±

dB

Power Supply Rejection (RS = 100 Ω, VCM = 0 V, VO = 0 V)

PSR

70

84

±

dB

Power Supply Current (No Load, VO = 0 V)

ID

μA

Single

±

200

250

Dual

±

400

500

Quad

±

800

1000

2	MOTOROLA ANALOG IC DEVICE DATA

LF441C LF442C LF444C

AC ELECTRICAL CHARACTERISTICS (VCC = +15 V, VEE = ±15 V, TA = +25°C, unless otherwise noted.)

Characteristic		Symbol	Min	Typ	Max	Unit
Slew Rate (Vin = ±10 V to +10 V, RL = 10 kW, CL = 10 pF, AV = +1.0)		SR	0.6	6.0	±	V/ ms
Settling Time	To within 10 mV	ts	±	1.6	±	ms
(AV = ±1.0, RL = 10 kW, VO = 0 V to +10 V)	To within 1.0 mV		±	2.2	±
Gain Bandwidth Product (f = 200 kHz)		GBW	0.6	2.0	±	MHz
Equivalent Input Noise Voltage (RS = 100 W, f = 1.0 kHz)		en	±	47	±	nV/√
								Hz
Equivalent Input Noise Current (f = 1.0 kHz)		in	±	0.01	±	pA/ √
								Hz
Input Resistance		Ri	±	1012	±	W
Channel Separation (f = 1.0 Hz to 20 kHz)		CS	±	120	±	dB

Figure 1. Maximum Power Dissipation versus Temperature for Package Variations

(mW)	2400
DISSIPATION	2000
				8 & 14 Pin Plastic
	1600			Package
POWER	1200		SO±14
MAXIMUM	800	SO±8
	400
D,
P	0
	±55 ±40		±20	0	20	40	60	80	100	120	140	160
				TA, AMBIENT TEMPERATURE (°C)

Figure 2. Input Bias Current versus

Input Common Mode Voltage

	20
(pA)		VCC = +15 V
		VEE = ±15 V
CURRENT	15	TA = 25°C
	10
, INPUT BIAS
	5.0
IB
I
	0	±5.0	0	5.0	10
	±10

VICR, INPUT COMMON MODE VOLTAGE (V)

Figure 3. Input Bias Current versus Temperature

Figure 4. Supply Current versus Supply Voltage

	1000								μA)	300
(nA)CURRENT									(
	100	VCC = +15 V							AMPLIFIERPER
		VEE = ±15 V								260
	10	VCM = 0 V
										220		125°C
													25°C
BIASINPUT	1.0								CURRENT
	0.1									180			± 55°C
									SUPPLY
I
IB,	0.01									140
	0.001								D,	100
									I
	±55	±25	0	25	50	75	100	125		0	5.0	10	15	20	25
		TA, AMBIENT TEMPERATURE (°C)										VCC, VEE , SUPPLY VOLTAGE (V)

MOTOROLA ANALOG IC DEVICE DATA	3