Philips Semiconductors Linear Products
Product specification
µ
A747C
Dual operational amplifier
54
August 31, 1994
853-0899 13721
DESCRIPTION
The 747 is a pair of high-performance monolithic operational
amplifiers constructed on a single silicon chip. High common-mode
voltage range and absence of “latch-up” make the 747 ideal for use
as a voltage-follower. The high gain and wide range of operating
voltage provides superior performance in integrator, summing
amplifier, and general feedback applications. The 747 is short-circuit
protected and requires no external components for frequency
compensation. The internal 6dB/octave roll-off insures stability in
closed-loop applications. For single amplifier performance, see
µ
A741 data sheet.
FEATURES
•
No frequency compensation required
•
Short-circuit protection
•
Offset voltage null capability
•
Large common-mode and differential voltage ranges
•
Low power consumption
•
No latch-up
PIN CONFIGURATION
+
B
A
–
INVERTING INPUT B
NON–INVERTING INPUT B
OFFSET NULL B
V–
OFFSET NULL A
NON–INVERTING INPUT A
INV. INPUT A
OFFSET NULL B
V + B
OUTPUT B
1
2
3
4
5
6
7
8
14
13
12
11
10
9
OFFSET NULL A
V + A
OUTPUT A
NO CONNECT
N Package
TOP VIEW
–
+
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
14-Pin Plastic DIP
0
°
C to 70
°
C
µ
A747CN
0405B
EQUIVALENT SCHEMATIC
NON–INVERTING
INPUT
Q1
Q8
Q2
Q3
Q4
Q7
Q5
Q6
R1
1K
Ω
R3
50K
Ω
R2
1K
Ω
Q9
Q13
R5
39K
Ω
Q10
Q11
Q22
V+
Q14
R9
25
Ω
OUTPUT
R10
50
Ω
Q20
Q16
Q17
Q18 Q15
V–
R11
50
Ω
R12
50k
Ω
R7
4.5
Ω
R8
7.5K
Ω
R4
5k
Ω
30pF
Q12
OFFSET NULL
INVERTING INPUT
OFFSET NULL
