Philips Semiconductors Linear Products
Product specification
Dual operational amplifier
µA747C
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
µA741
data sheet.
PIN CONFIGURATION
N Package
INV. INPUT A 1
NON–INVERTING INPUT A 2
OFFSET NULL A
3
–
A
+
14 OFFSET NULL A
13 V + A
12 OUTPUT A
11 NO CONNECT
10 OUTPUT B
+
–B
9 V+B
8 OFFSET NULL B
V– 4
OFFSET NULL B
5
NON–INVERTING INPUT B 6
INVERTING INPUT B 7
FEATURES
TOP VIEW
•
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
14-Pin Plastic DIP
TEMPERATURE RANGE
0°C to 70°C
ORDER CODE
µA747CN
DWG #
0405B
EQUIVALENT SCHEMATIC
INVERTING INPUT
V+
Q8
Q9
Q12
Q13
Q14
NON–INVERTING
INPUT
Q1
Q2
30pF
Q3
Q4
R5
39KΩ
Q16
Q7
Q5
OFFSET NULL
Q6
Q10
Q11
Q22
R7
4.5Ω
Q18 Q15
R8
7.5KΩ
R9
25Ω
OUTPUT
Q17
R10
50Ω
Q20
R1
1KΩ
R3
50KΩ
R2
1KΩ
R4
5kΩ
R12 R11
50kΩ 50Ω
V–
OFFSET NULL
August 31, 1994
54
853-0899 13721
Philips Semiconductors Linear Products
Product specification
Dual operational amplifier
µA747C
ABSOLUTE MAXIMUM RATINGS
SYMBOL
V
S
P
D MAX
V
IN
V
IN
T
STG
T
A
T
SOLD
I
SC
Supply voltage
Maximum power dissipation T
A
=25°C (still air)
1
Differential input voltage
Input voltage
2
Voltage between offset null and V-
Storage temperature range
Operating temperature range
Lead temperature (soldering, 10sec)
Output short-circuit duration
PARAMETER
RATING
±18
1500
±30
±15
±0.5
-65 to +150
0 to +70
300
Indefinite
UNIT
V
mW
V
V
V
°C
°C
°C
NOTES:
1. Derate above 25°C at the following rates:
N package at 12mW/°C
2. For supply voltages less than
±15V,
the absolute maximum input voltage is equal to the supply voltage.
DC ELECTRICAL CHARACTERISTICS
T
A
=25°C, V
CC
=
±15V
unless otherwise specified.
SYMBOL
V
OS
∆V
OS
/∆T
I
OS
∆I
OS
/∆T
I
BIAS
∆I
B
/∆T
V
OUT
I
CC
P
d
C
IN
R
OUT
PSRR
A
VOL
CMRR
Output voltage swing
Supply current each side
Over temperature
Power consumption
Over temperature
Input capacitance
Offset voltage adjustment range
Output resistance
Channel separation
Supply voltage rejection ratio
Large-signal voltage gain (DC)
Common-mode rejection ratio
R
S
≤10kΩ,
over temp.
R
L
≥2kΩ,
V
OUT
=±10V
Over temperature
R
S
≤10kΩ,
V
CM
=±12V
Over temperature
25,000
15,000
70
R
L
≥2kΩ,
over temp.
R
L
≥10kΩ,
over temp.
±10
±12
Input current
Over temperature
Offset current
Over temperature
PARAMETER
Offset voltage
TEST CONDITIONS
R
S
≤10kΩ
R
S
≤10kΩ,
over temp.
µA747C
Min
Typ
2.0
3.0
10
20
7.0
200
80
30
1
±13
±14
1.7
2.0
50
60
1.4
±15
75
120
30
150
2.8
3.3
85
100
500
800
200
300
Max
6.0
7.5
UNIT
mV
mV
µV/°C
nA
nA
pA/°C
nA
nA
nA/°C
V
V
mA
mA
mW
mW
pF
mV
Ω
dB
µV/V
V/V
V/V
dB
August 31, 1994
55
Philips Semiconductors Linear Products
Product specification
Dual operational amplifier
µA747C
AC ELECTRICAL CHARACTERISTICS
T
A
=25°C, V
S
=
±15V
unless otherwise specified.
SYMBOL
PARAMETER
Transient response
t
R
SR
Rise time
Overshoot
Slew rate
TEST CONDITIONS
V
IN
=20mV, R
L
=2kΩ, C
L
<100pF
Unity gain C
L
≤100pF
Unity gain C
L
≤100pF
R
L
>2kΩ
0.3
5.0
0.5
µs
%
V/µs
µA747C
Min
Typ
Max
UNIT
TYPICAL PERFORMANCE CHARACTERISTICS
Open–Looped Voltage Gain
as a Function of Frequency
10
6
10
5
10
4
VOLTAGE GAIN
10
3
10
2
10
1
–1
1
10
100
1K
10K 100K 1M 10M
FREQUENCY — Hz
–180
1
10
100
1K
10K 100K 1M 10M
FREQUENCY — Hz
V
S
= + 15V
T
A
= 25
o
C
PHASE DEGREES
Open–Looped Voltage Response
as a Function of Frequency
V
S
= + 15V
T
A
= 25
o
C
–45
PEAK–TO–PEAK OUTPUT SWING — V
0
40
36
32
28
24
20
16
12
8
4
0
Output Voltage Swing
as a Function of Frequency
V
S
= + 15V
T
A
= 25
o
C
R
L
= 10kΩ
–90
–135
100
1k
10k
100k
1M
FREQUENCY — Hz
Open–Loop Voltage Gain as a
Function of Supply Voltage
PEAK TO PEAK OUTPUT SWING — V
115
110
VOLTAGE GAIN — dB
105
100
95
90
85
80
0
4
8
12
15
20
SUPPLY VOLTAGE — +V
T
A
= 25
O
C
40
36
32
28
24
20
16
12
8
4
0
5
Output Voltage Swing as a
Function of Supply Voltage
COMMON MODE VOLTAGE RANGE —+ V
–55
o
C < T
A
< +125
o
C
R
L
> 2kΩ
Input Common–Mode Voltage Range
as a Function of Supply voltage
16
14
12
10
8
6
4
2
0
5
10
15
20
SUPPLY VOLTAGE — +V
–55
o
C < T
A
< +125
o
C
10
15
20
SUPPLY VOLTAGE — +V
Transient Response
28
24
20
OUTPUT — mV
16
12
8
4
10%
0
RISE TIME
V
S
= + 15V
T
A
= 25
o
C
R
L
= 2kΩ
C
L
= 100pF
OUTPUT VOLTAGE — V
Voltage-follower Large-Signal
Pulse Response
10
8
6
4
2
0
–2
–4
–6
–8
–10
0 10 20 30 40 50 60 70 80 90
TIME —
µS
OUTPUT
INPUT
V
S
= + 15V
T
A
= 25
o
C
RELATIVE VALUE
Frequency Characteristics as a
Function of Supply Voltage
1.4
T
A
= 25
o
C
1.2
TRANSIENT RESPONSE
1.0
SLEW RATE
CLOSED
LOOP
BANDWIDTH
0.8
0.6
5
10
15
20
SUPPLY VOLTAGE — +V
0
0.5
1.0
1.5
2.0
2.5
TIME —
µs
August 31, 1994
56
Philips Semiconductors Linear Products
Product specification
Dual operational amplifier
µA747C
TYPICAL PERFORMANCE CHARACTERISTICS
(Continued)
Frequency Characteristics as a
Function of Ambient Temperature
1.4
POWER CONSUMPTION — mW
V
S
= + 15V
RELATIVE VALUE
1.2
TRANSIENT RESPONSE
SLEW RATE
100
INPUT BIAS CURRENT — nA
Power Consumption as a
Function of Supply Voltage
500
Input Bias Current as a Function
of Ambient Temperature
V
S
= +15V
400
80
T
A A
2525
o
C
T= =
o
C
60
300
1.0
40
200
0.8
CLOSED LOOP
BANDWIDTH
20
100
0.6
–60
0
–20
20
80
100
140
5
10
15
20
TEMPERATURE —
o
C
SUPPLY VOLTAGE — +V
0
–60
–20
20
60
100
140
TEMPERATURE —
o
C
Input Resistance as a Function
of Ambient Temperature
10.0
5.0
INPUT RESISTANCE — MΩ
3.0
V
S
= + 15V
INPUT OFFSET CURRENT — nA
40
Input Offset Current as a
Function of Supply Voltage
T
A
= 25
o
C
30
INPUT OFFSET CURRENT — nA
Input Offset Current as a Function
of Ambient Temperature
140
120
100
80
60
40
20
0
–60
V
S
= + 15V
1.0
0.5
0.3
20
10
0.1
–60
0
–20
20
60
100
140
5
10
15
20
–20
20
60
100
140
TEMPERATURE —
o
C
SUPPLY VOLTAGE — +V
TEMPERATURE
—
o
C
Power Consumption as a Function
of Ambient Temperature
PEAK–TO–PEAK OUTPUT SWING — V
28
26
24
22
20
18
16
14
12
10
POWER CONSUMPTION — mW
70
V
S
= + 15V
Output Voltage Swing as a
Function of Load Resistance
35
V
S
= +15V
T
A
= 25
o
C
SHORT CIRCUIT CURRENT — mA
Output Short–Circuit Current
as a Function of
Ambient Temperature
30
60
25
50
20
40
30
–60
–20
20
60
100
140
15
8
0.1
0.2
0.5 1.0
2.0
5.0
10
10
–60
–20
TEMPERATURE
—
o
C
LOAD RESISTANCE — kΩ
20
60
100
TEMPERATURE —
o
C
140
August 31, 1994
57
Philips Semiconductors Linear Products
Product specification
Dual operational amplifier
µA747C
TYPICAL PERFORMANCE CHARACTERISTICS
(Continued)
Input Noise Voltage
as a Function of Frequency
MEANMEAN SQUARE VOLTAGE — V 2 Hz
SQUARE NOISE CURRENT
10
–13
MEAN SQUARE VOLTAGE — V 2 Hz
V
S
= + 15V
T
A
= 25
o
C
10
–21
V
S
= + 15V
T
A
= 25
o
C
Input Noise Current
as a Function of Frequency
TOTAL NOISE REFERRED TO INPUT —
µ
Vrms
100
Broadband Noise for
Various Bandwidths
V
S
= + 15V
T
A
= 25
o
C
10
–14
10
–22
10
–15
10
–23
10
10–100kHz
10–10kHz
1
10–1kHz
10
–16
10
–24
10
–17
10
–25
10
–18
10
100
1K
10K
100K
10
–26
10
100
1K
10K
100K
FREQUENCY — Hz
0.1
100
1K
10K
100K
FREQUENCY — Hz
SOURCE RESISTANCE —
Ω
TEST CIRCUITS
–
µA747C
+
V
IN
C
L
R
L
V
OUT
Transient Response Test Circuit
+
µA747C
–
10KΩ
–V
Voltage Offset Null Circuit
August 31, 1994
58
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