NXP Semiconductors UA747C User Manual

Philips Semiconductors Linear Products Product specification

µA747CDual 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
µA741 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 µA747CN 0405B

EQUIVALENT SCHEMATIC

NON–INVERTING

INPUT

Q1

Q8

Q2

Q3

Q4

Q7

Q5

Q6

R1
1KΩR350KΩ

R2
1KΩ

Q9

Q13

R5
39KΩ

Q10 Q11 Q22

V+

Q14

R9
25Ω

OUTPUT

R10
50Ω

Q20

Q16

Q17

Q18 Q15

V–

R11
50Ω

R12
50kΩ

R7

4.5Ω

R8

7.5KΩ

R4
5kΩ

30pF

Q12

OFFSET NULL

INVERTING INPUT

OFFSET NULL

Philips Semiconductors Linear Products Product specification

µA747CDual operational amplifier

August 31, 1994

55

ABSOLUTE MAXIMUM RATINGS

SYMBOL PARAMETER RATING UNIT

V

S

Supply voltage ±18 V

P

D MAX

Maximum power dissipation TA=25°C (still air)

1

1500 mW

V

IN

Differential input voltage ±30 V

V

IN

Input voltage

2

±15 V

Voltage between offset null and V- ±0.5 V

T

STG

Storage temperature range -65 to +150 °C

T

A

Operating temperature range 0 to +70 °C

T

SOLD

Lead temperature (soldering, 10sec) 300 °C

I

SC

Output short-circuit duration Indefinite

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

TA=25°C, V

CC

= ±15V unless otherwise specified.

µA747C

SYMBOL

PARAMETER

TEST CONDITIONS

Min Typ Max

UNIT

V

OS

Offset voltage RS≤10kΩ 2.0 6.0 mV

RS≤10kΩ, over temp. 3.0 7.5 mV
∆VOS/∆T 10 µV/°C
I

OS

Offset current 20 200 nA

Over temperature 7.0 300 nA
∆IOS/∆T 200 pA/°C
I

BIAS

Input current 80 500 nA

Over temperature 30 800 nA
∆IB/∆T 1 nA/°C

V

OUT

Output voltage swing

RL≥2kΩ, over temp.

R

L

≥10kΩ, over temp.

±10
±12

±13
±14

V
V

I

CC

Supply current each side 1.7 2.8 mA

Over temperature 2.0 3.3 mA
P

d

Power consumption 50 85 mW

Over temperature 60 100 mW
C

IN

Input capacitance 1.4 pF
Offset voltage adjustment range ±15 mV

R

OUT

Output resistance 75 Ω
Channel separation 120 dB

PSRR Supply voltage rejection ratio RS≤10kΩ, over temp. 30 150 µV/V
A

VOL

Large-signal voltage gain (DC)

RL≥2kΩ, V

OUT

=±10V

Over temperature

25,000
15,000

V/V
V/V

CMRR Common-mode rejection ratio

RS≤10kΩ, VCM=±12V

Over temperature

70 dB

Philips Semiconductors Linear Products Product specification

µA747CDual operational amplifier

August 31, 1994

56

AC ELECTRICAL CHARACTERISTICS

TA=25°C, V

S

= ±15V unless otherwise specified.

µA747C

SYMBOL

PARAMETER

TEST CONDITIONS

Min Typ Max

UNIT

Transient response VIN=20mV, RL=2kΩ, CL<100pF

t

R

Rise time Unity gain CL≤100pF 0.3 µs
Overshoot Unity gain CL≤100pF 5.0 %

SR Slew rate RL>2kΩ 0.5 V/µs

TYPICAL PERFORMANCE CHARACTERISTICS

COMMON MODE VOLTAGE RANGE — V

+

–55oC < TA < +125oC

16
14

12
10

8
6

4
2
0

5 10 15 20

SUPPLY VOLTAGE — +

V

Frequency Characteristics as a

Function of Supply Voltage

VOLTAGE GAIN

VS = + 15V
T

A

= 25oC

10

6

10

5

10

4

10

3

10

2

10

1

1 10 100 1K 10K 100K 1M 10M

FREQUENCY — Hz

Open–Looped Voltage Gain
as a Function of Frequency

PHASE DEGREES

1 10 100 1K 10K 100K 1M 10M

VS = + 15V
T

A

= 25oC

0

–45

–90

–135

–180

FREQUENCY — Hz

Open–Looped Voltage Response

as a Function of Frequency

PEAK–TO–PEAK OUTPUT SWING — V

40
36

32
28
24
20
16
12

8
4

0

100 1k 10k 100k 1M

FREQUENCY — Hz

VS = + 15V
T

A

= 25oC

R

L

= 10kΩ

Output Voltage Swing

as a Function of Frequency

115

110

105

100

95

90

85

80

0 4 8 12 15 20

SUPPLY VOLTAGE — +

V

VOLTAGE GAIN — dB

TA = 25OC

Open–Loop Voltage Gain as a

Function of Supply Voltage

PEAK TO PEAK OUTPUT SWING — V

–55oC < TA < +125oC
R

L

> 2kΩ

40
36

32
28
24

20
16

12

8
4

0

5 10 15 20

SUPPLY VOLTAGE — +

V

Output Voltage Swing as a

Function of Supply Voltage

OUTPUT — mV

28

24
20

16
12

8
4

0

0 0.5 1.0 1.5 2.0 2.5

TIME — µs

VS = + 15V
T

A

= 25oC

R

L

= 2kΩ

C

L

= 100pF

10%

RISE TIME

Transient 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

VS = + 15V
T

A

= 25oC

OUTPUT VOLTAGE — V

Voltage-follower Large-Signal

Pulse Response

1.4

1.2

1.0

0.8

0.6
5 10 15 20

SUPPLY VOLTAGE — +

V

RELATIVE VALUE

TRANSIENT RESPONSE

SLEW RATE

CLOSED

LOOP

BANDWIDTH

T

A

= 25

o

C

Input Common–Mode Voltage Range

as a Function of Supply voltage

–1

Philips Semiconductors Linear Products Product specification

µA747CDual operational amplifier

August 31, 1994

57

TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

Power Consumption as a Function

of Ambient Temperature

Output Short–Circuit Current

as a Function of

Ambient Temperature

RELATIVE VALUE

Frequency Characteristics as a

Function of Ambient Temperature

1.4

1.2

1.0

0.8

0.6

TRANSIENT RESPONSE

–60 –20 20 80 100 140

TEMPERATURE —

o

C

VS = + 15V

CLOSED LOOP

BANDWIDTH

SLEW RATE

POWER CONSUMPTION — mW

TA = 25oC

100

80

60

40

20

0

5 10 15 20

TA = 25oC

SUPPLY VOLTAGE — +

V

Power Consumption as a

Function of Supply Voltage

INPUT BIAS CURRENT — nA

VS = +15V

500

400

300

200

100

0

–60 –20 20 60 100 140

TEMPERATURE —

o

C

Input Bias Current as a Function

of Ambient Temperature

INPUT RESISTANCE — MΩ

10.0

5.0

3.0

1.0

0.5

0.3

0.1
–60 –20 20 60 100 140

TEMPERATURE —

o

C

Input Resistance as a Function

of Ambient Temperature

VS = + 15V

40

30

20

10

0

5 10 15 20

SUPPLY VOLTAGE —

+V

INPUT OFFSET CURRENT — nA

TA = 25oC

Input Offset Current as a

Function of Supply Voltage

140
120

100

80

60

40

20

0

–60 –20 20 60 100 140

TEMPERATURE

—

o

C

INPUT OFFSET CURRENT — nA

VS = + 15V

Input Offset Current as a Function

of Ambient Temperature

70

60

50

40

30

–60 –20 20 60 100 140

TEMPERATURE

—

o

C

POWER CONSUMPTION — mW

VS = + 15V

PEAK–TO–PEAK OUTPUT SWING — V

VS = +15V
T

A

= 25oC

28
26

24
22
20

18
16

14
12
10

8

0.1 0.2 0.5 1.0 2.0 5.0 10

LOAD RESISTANCE — kΩ

Output Voltage Swing as a

Function of Load Resistance

SHORT CIRCUIT CURRENT — mA

35

30

25

20

15

10

–60 –20 20 60 100 140

TEMPERATURE —

o

C

Philips Semiconductors Linear Products Product specification

µA747CDual operational amplifier

August 31, 1994

58

TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

MEAN SQUARE VOLTAGE — V Hz

2

10

–13

10

–14

10

–15

10

–16

10

–17

10

–18

10 100 1K 10K 100K

FREQUENCY — Hz

VS = + 15V
T

A

= 25oC

MEAN SQUARE VOLTAGE — V Hz

2

MEAN SQUARE NOISE CURRENT

10

–21

10

–22

10

–23

10

–24

10

–25

10

–26

10 100 1K 10K 100K

FREQUENCY — Hz

Broadband Noise for

Various Bandwidths

TOTAL NOISE REFERRED TO INPUT — Vrmsµ

10–1kHz

100

10

1

0.1
100 1K 10K 100K

10–100kHz

10–10kHz

SOURCE RESISTANCE — Ω

VS = + 15V
T

A

= 25oC

Input Noise Current

as a Function of Frequency

Input Noise Voltage

as a Function of Frequency

VS = + 15V
T

A

= 25oC

TEST CIRCUITS

+

–

µA747C

V

IN

C

L

R

L

V

OUT

10KΩ

–V

+

–

µA747C

Transient Response Test Circuit

Voltage Offset Null Circuit