DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µPC4074
J-FET INPUT LOW-NOISE QUAD OPERATIONAL AMPLIFIER
DESCRIPTION
The µPC4074 is a J-FET input operational amplifier. This product is designed as low noise version of the µPC4084.
The features of the µPC4074 are more improved input equivalent noise voltage, input offset voltage and input bias
current than those of µPC4084. By these features, the µPC4074 is excellent choice for wide variety of applications
including audio preamplifier and active filter.
FEATURES
5
• Low noise: en = 17 nV/ Hz (TYP.)
• Very low input bias and offset currents
• Output short circuit protection
• High input impedance...J-FET Input stage
• Internal frequency compensation
• High slew rate...13 V/µs (TYP.)
ORDERING INFORMATION
Part Number
Package
µPC4074C
14-pin plastic DIP (7.62 mm (300))
µPC4074G2
14-pin plastic SOP (5.72 mm (225))
PIN CONFIGURATION (Top View)
EQUIVALENT CIRCUIT (1/4 Circuit)
V
R1
+
µ PC4074C, 4074G2
Q9
Q5
Q14
Q2
Q8
II1 2
Q16
R8
Q10
IN
C1
Q6
Q7
Q3
Q4
R2
R3
R4
R9
R6
Q13
D1
4
+ −
13 II4
IN1 3
R11
D2
11 V−
IN2 5
OUT
12 IN4
V+ 4
R10
Q15
Q11
R5
− +
10 IN3
II2 6
R7
V
–
+ −
Q1
1
2
− +
II
14 OUT4
OUT1 1
Q12
3
OUT2 7
9 II3
8 OUT3
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. G15206EJ4V0DS00 (4th edition)
(Previous No. IC-1617)
Date Published December 2000 NS CP(K)
Printed in Japan
The mark 5 shows major revised points.
©
1987