MOTOROLA LF442CN, LF442CDR2, LF442CD, LF444CN, LF444CD Datasheet

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SEMICONDUCTOR

TECHNICAL DATA

LOW POWER

JFET INPUT

OPERATIONAL AMPLIFIERS

Order this document by LF441C/D

1

+

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO–8)

N SUFFIX

PLASTIC PACKAGE

CASE 626

Offset Null

Inputs

V

EE

(Single, Top View)

NC
V

CC

Output
Offset Null

Output 1

Inputs 1

V

EE

(Dual, Top View)

Inputs 2

Output 2

V

CC

1
2
3
4

8
7
6
5

+

–

–

–
+

2

1
2
3
4

8
7
6
5

8

1

8

1

PIN CONNECTIONS

D SUFFIX

PLASTIC PACKAGE

CASE 751A

(SO–14)

N SUFFIX

PLASTIC PACKAGE

CASE 646

Output 1

Inputs 1

V

CC

Inputs 2

Output 2

Output 4

Inputs 4

V

EE

Inputs 3

Output 3

(Quad, Top View)

1

2

3

4
5

6

78

9

10

11

12

13

14

4

23

++
++

1

14

1

14

1

––

––

PIN CONNECTIONS

1

MOTOROLA ANALOG IC DEVICE DATA

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 

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: 10

12

Ω

• Large Output Voltage Swing: ±14 V

• Output Short Circuit Protection

Representative Schematic Diagram

(Each Amplifier)

1

5

V

EE

LF441C input offset voltage

null adjust circuit

100 k

Ω

1.5 k

Ω

15

*

*

Inputs

J1 J2

R1 R2

R3

R4

Q1 Q2

Q3

Q4

Q5

R5

C1

C2

Q6

D1

Q7

D2

V

EE

Output

V

CC

*Null adjustment pins for LF441 only.

+

+

ORDERING INFORMATION

Device Function

Operating

Temperature Range

Package

LF441CD
LF441CN

Single

SO–8

Plastic DIP

LF442CD
LF442CN

Dual

TA = 0° to +70°C

SO–8

Plastic DIP

LF444CD
LF444CN

Quad SO–14

Plastic DIP

 Motorola, Inc. 1996 Rev 0

LF441C LF442C LF444C

2

MOTOROLA ANALOG IC DEVICE DATA

MAXIMUM RATINGS

Rating Symbol Value Unit

Supply Voltage (from VCC to VEE) V

S

+36 V

Input Differential Voltage Range (Note 1) V

IDR

±30 V

Input Voltage Range (Notes 1 and 2) V

IR

±15 V

Output Short Circuit Duration (Note 3) t

SC

Indefinite sec

Operating Junction Temperature (Note 3) T

J

+150 °C

Storage Temperature Range T

stg

–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 (V

CC

= +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) V

IO

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 V oltage ∆VIO/∆T – 10 – µV/°C

(RS = 10 kΩ, VO = 0 V)

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

IO

TA = +25°C – 0.5 50 pA
TA = 0° to +70°C – – 1.5 nA

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

IB

TA = +25°C – 3.0 100 pA
TA = 0° to +70°C – – 3.0 nA

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

ICR

–

–11

+14.5

–12

+11

–

V

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

VOL

V/mV
TA = +25°C 25 60 –
TA = 0° to +70°C 15 – –

Output Voltage Swing (RL = 10 kΩ) VO +

VO –

+12

–

+14

–14

–

–12

V

Common Mode Rejection (RS ≤ 10 kΩ, VCM = V

ICR

, 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) I

D

µA
Single – 200 250
Dual – 400 500
Quad – 800 1000

LF441C LF442C LF444C

3

MOTOROLA ANALOG IC DEVICE DATA

AC ELECTRICAL CHARACTERISTICS (V

CC

= +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 kΩ, CL = 10 pF, AV = +1.0) SR 0.6 6.0 – V/ µs
Settling Time To within 10 mV t

s

– 1.6 – µs

(AV = –1.0, RL = 10 kΩ, 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 Ω, f = 1.0 kHz) e

n

– 47 –

nV/ Hz√

Equivalent Input Noise Current (f = 1.0 kHz) i

n

– 0.01 –

pA/ Hz√

Input Resistance R

i

– 10

12

– Ω

Channel Separation (f = 1.0 Hz to 20 kHz) CS – 120 – dB

I

D,

SUPPLY CURRENT PER AMPLIFIER ( A)

P

D,

MAXIMUM POWER DISSIPATION (mW)

I

IB,

INPUT BIAS CURRENT (nA)

I

IB

, INPUT BIAS CURRENT (pA)

TA, AMBIENT TEMPERATURE (°C) V

ICR

, INPUT COMMON MODE VOLTAGE (V)

VCC,



VEE

, SUPPLY VOLTAGE (V)

2400

2000

1600

1200

800

400

0
–55 –40 –20 0 20 40 60 80 100 120 140 160

TA, AMBIENT TEMPERATURE (°C)

µ

Figure 1. Maximum Power Dissipation versus

Temperature for Package Variations

Figure 2. Input Bias Current versus

Input Common Mode Voltage

Figure 3. Input Bias Current versus Temperature Figure 4. Supply Current versus Supply Voltage

8 & 14 Pin Plastic

Package

SO–14

SO–8

VCC = +15 V
VEE = –15 V
TA = 25

°

C

20

15

10

5.0

0

1000

100

10

1.0

0.1

0.01

0.001

300

260

220

180

140

100

–10 –5.0 0 5.0 10

–55 –25 0 25 50 75 100 125 0 5.0 10 15 20 25

VCC = +15 V
VEE = –15 V
VCM = 0 V

125°C

25°C

–55°C