LOW POWER JFET INPUT OPERATIONAL AMPLIFIERS
Description
Order this document by LF441C/D
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
LF441C LF442C LF444C
LOW POWER JFET INPUT OPERATIONAL AMPLIFIERS
SEMICONDUCTOR TECHNICAL DATA
• • • • • •
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
8 1 8 1
N SUFFIX PLASTIC PACKAGE CASE 626
D SUFFIX PLASTIC PACKAGE CASE 751 (SO–8)
Representative Schematic Diagram (Each Amplifier)
VCC
PIN CONNECTIONS
Offset Null Inputs VEE R4 Output Output 1 Inputs 1
1 2 8 1 2 3 4 8
– +
7 6 5
Q7 J1 Inputs + Q3 Q1 Q2 Q4 C1 C2 Q5 Q6 J2 D2 R3 D1
NC VCC Output Offset Null
(Single, Top View)
1 2
– 3 +
4
7
VCC Output 2 Inputs 2
VEE
– + 5
6
(Dual, Top View)
R1
R2
R5 VEE 5 * + 1 5 1.
5 kΩ VEE 100 kΩ
14 1 1
1
*
14
*Null adjustment pins for LF441 only.
LF441C input offset voltage null adjust circuit
N SUFFIX PLASTIC PACKAGE CASE 646
D SUFFIX PLASTIC PACKAGE CASE 751A (SO–14)
PIN CONNECTIONS ORDERING INFORMATION
Device LF441CD LF441CN LF442CD LF442CN LF444CD LF444CN Function Single Dual Quad Operating Temperature Range Package SO–8 Plastic DIP 70°C TA = 0° to +70 SO–8 Plastic DIP SO–14 Plastic DIP Output 1 Inputs 1 VCC Inputs 2
6 1 2 3 14
Output 4 Inputs 4
–
1 4
– +
13 12 11
+
4 5
VEE Inputs 3
+ –
2 3
+ –
10 9 8
Output 2
7
Output 3
(Quad, Top View)
© Motorola, Inc.
1996 Rev 0
MOTOROLA ANALOG IC DEVICE DATA
1
LF441C LF442C LF444C
M...
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