Philips Semiconductors Linear Products
Product specification
Dual operational amplifier
µA747C
DESCRIPTION
PIN CONFIGURATION
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
µA741 data sheet.
N Package
INV. INPUT A
NON–INVERTING INPUT A
OFFSET NULL A
OFFSET NULL A
1
2
3
4
5
6
7
14
13
12
11
10
9
–
+
A
V + A
OUTPUT A
NO CONNECT
OUTPUT B
V + B
V–
OFFSET NULL B
NON–INVERTING INPUT B
INVERTING INPUT B
+
–
B
8
OFFSET NULL B
TOP VIEW
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
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
14-Pin Plastic DIP
0°C to 70°C
µA747CN
0405B
EQUIVALENT SCHEMATIC
INVERTING INPUT
V+
Q8
Q9
Q12
Q13
Q14
NON–INVERTING
INPUT
Q1
Q3
Q2
R7
4.5Ω
R8
7.5KΩ
30pF
Q18 Q15
Q4
R5
R9
25Ω
39KΩ
Q16
OUTPUT
Q7
Q17
R10
50Ω
Q5
Q10
Q11
Q22
Q6
OFFSET NULL
R1
Q20
R3
50KΩ
R2
1KΩ
R4
5kΩ
R12 R11
50kΩ 50Ω
1KΩ
V–
OFFSET NULL
54
August 31, 1994
853-0899 13721
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Philips Semiconductors Linear Products
Product specification
Dual operational amplifier
µA747C
AC ELECTRICAL CHARACTERISTICS
T =25°C, V = ±15V unless otherwise specified.
A
S
µA747C
Typ
SYMBOL
PARAMETER
TEST CONDITIONS
UNIT
Min
Max
Transient response
V
IN
=20mV, R =2kΩ, C <100pF
L
L
t
Rise time
Overshoot
Slew rate
Unity gain C ≤100pF
0.3
5.0
0.5
µs
%
R
L
Unity gain C ≤100pF
L
SR
R >2kΩ
L
V/µs
TYPICAL PERFORMANCE CHARACTERISTICS
Open–Looped Voltage Gain
as a Function of Frequency
Open–Looped Voltage Response
Output Voltage Swing
as a Function of Frequency
as a Function of Frequency
6
5
40
0
10
10
V
T
= + 15V
36
32
V
T
= + 15V
S
A
S
A
V
T
= + 15V
S
o
o
= 25 C
= 25 C
o
= 25 C
A
–45
–90
R
= 10kΩ
4
3
2
L
10
10
28
24
20
16
10
10
12
8
–135
–180
1
4
0
–1
100
1k
10k
100k
1M
1
10 100 1K 10K 100K 1M 10M
FREQUENCY — Hz
1
10 100 1K 10K 100K 1M 10M
FREQUENCY — Hz
FREQUENCY — Hz
Open–Loop Voltage Gain as a
Function of Supply Voltage
Output Voltage Swing as a
Function of Supply Voltage
Input Common–Mode Voltage Range
as a Function of Supply voltage
115
40
16
O
36
32
o
o
T
= 25
C
14
12
10
8
–55 C < T < +125 C
110
105
A
o
o
A
–55 C < T < +125 C
A
R
> 2kΩ
L
28
100
95
24
20
16
12
6
90
85
80
4
2
0
8
4
0
0
4
8
12
15
20
5
10
15
20
5
10
15
20
SUPPLY VOLTAGE — +V
SUPPLY VOLTAGE — +V
SUPPLY VOLTAGE — +V
Voltage-follower Large-Signal
Pulse Response
Frequency Characteristics as a
Function of Supply Voltage
Transient Response
28
10
1.4
V
T
= + 15V
8
6
4
2
S
A
24
20
o
o
T
=
25 C
= 25 C
A
1.2
1.0
TRANSIENT RESPONSE
OUTPUT
INPUT
V
T
= + 15V
16
12
S
A
L
L
o
= 25 C
0
R
= 2kΩ
= 100pF
SLEW RATE
–2
C
8
4
–4
–6
CLOSED
LOOP
BANDWIDTH
0.8
0.6
10%
RISE TIME
0
–8
–10
0
10 20 30 40 50 60 70 80 90
5
10
15
20
0
0.5
1.0
1.5
2.0
2.5
TIME — µS
TIME — µs
SUPPLY VOLTAGE — +V
56
August 31, 1994
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Philips Semiconductors Linear Products
Product specification
Dual operational amplifier
µA747C
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Frequency Characteristics as a
Function of Ambient Temperature
Power Consumption as a
Function of Supply Voltage
Input Bias Current as a Function
of Ambient Temperature
100
80
500
400
1.4
V
= + 15V
V
= +15V
S
S
o
T = 25C C
A
1.2
TRANSIENT RESPONSE
300
200
60
40
20
SLEW RATE
1.0
CLOSED LOOP
BANDWIDTH
0.8
0.6
100
0
0
5
10
15
20
–60
–20
20
60
100
o
140
–60
–20
20
80
100
140
o
TEMPERATURE —
C
SUPPLY VOLTAGE — +V
TEMPERATURE —
C
Input Resistance as a Function
of Ambient Temperature
Input Offset Current as a
Function of Supply Voltage
Input Offset Current as a Function
of Ambient Temperature
40
30
10.0
140
V
= + 15V
o
S
T
= 25 C
120
A
5.0
3.0
V
= + 15V
S
100
80
1.0
20
10
0
60
40
0.5
0.3
20
0.1
0
–60
5
10
15
20
–60
–20
20
60
100
C
140
–20
20
60
100
o
140
o
SUPPLY VOLTAGE — +V
TEMPERATURE —
C
TEMPERATURE —
Output Short–Circuit Current
as a Function of
Power Consumption as a Function
of Ambient Temperature
Output Voltage Swing as a
Function of Load Resistance
Ambient Temperature
28
26
35
30
70
V
= + 15V
V
T
= +15V
S
S
A
o
= 25 C
24
22
20
60
50
40
25
20
18
16
14
12
15
10
30
10
8
0.1 0.2
–60
–20
20
60
100
o
140
0.5 1.0 2.0
5.0 10
–60
–20
20
60
100
140
o
TEMPERATURE —
C
LOAD RESISTANCE — kΩ
TEMPERATURE —
C
57
August 31, 1994
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Philips Semiconductors Linear Products
Product specification
Dual operational amplifier
µA747C
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Input Noise Voltage
as a Function of Frequency
Input Noise Current
as a Function of Frequency
Broadband Noise for
Various Bandwidths
–13
–14
–15
–16
–17
–18
–21
–22
–23
–24
10
10
10
10
10
10
100
10
V
T
= + 15V
V
T
= + 15V
V
T
= + 15V
S
A
S
A
S
A
o
o
o
= 25 C
= 25 C
= 25 C
10
10
10–100kHz
10–10kHz
10–1kHz
1
–25
–26
10
10
10
10
0.1
100
10
100
1K
10K
100K
1K
10K
100K
10
100
1K
10K
100K
FREQUENCY — Hz
SOURCE RESISTANCE — Ω
FREQUENCY — Hz
TEST CIRCUITS
–
µA747C
V
OUT
+
V
IN
C
L
R
L
Transient Response Test Circuit
+
µA747C
–
10KΩ
–V
Voltage Offset Null Circuit
58
August 31, 1994
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