uA748C, uA748M
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS095 – D921, DECEMBER 1970 – REVISED OCTOBER 1990
•
•
•
•
•
•
•
uA748C . . . D OR P PACKAGE
uA748M . . . JG PACKAGE
(TOP VIEW)
Frequency and Transient Response
Characteristics Adjustable
Short-Circuit Protection
Offset-Voltage Null Capability
Wide Common-Mode and Differential
Voltage Ranges
Low Power Consumption
No Latch-Up
Same Pin Assignments as uA709
N1/COMP
IN –
IN +
VCC –
1
8
2
7
3
6
4
5
COMP
VCC +
OUT
N2
uA748M . . . U FLAT PACKAGE
(TOP VIEW)
NC
N1/COMP
IN –
IN +
VCC –
description
The uA748 is a general-purpose operational
amplifier that offers the same advantages and
attractive features as the uA741 except for internal
compensation. External compensation can be as
simple as a 30-pF capacitor for unity-gain
conditions and, when the closed-loop gain is
greater than one, can be changed to obtain wider
bandwidth or higher slew rate. This circuit features
high gain, large differential and common-mode
input voltage range, and output short-circuit
protection. Input offset-voltage adjustment can be
provided by connecting a variable resistor
between the offset null pins as shown in Figure 12.
1
10
2
9
3
8
4
7
5
6
NC
COMP
VCC +
OUT
N2
NC – No internal connection
symbol
COMP
N1/COMP
N2
The uA748C is characterized for operation from
0°C to 70°C; the uA748M is characterized for
operation over the full military temperature range
of – 55°C to 125°C.
IN +
+
OUT
–
IN –
AVAILABLE OPTIONS
PACKAGE
TA
0°C
to
70°C
–55°C
to
125°C
VIO max
AT 25°C
8-PIN
10-PIN
SMALL OUTLINE
(D)
CERAMIC DIP
(JG)
PLASTIC DIP
(P)
FLAT PACK
(U)
6 mV
uA748CD
—
uA748CP
—
5 mV
—
uA748MJG
—
uA747MU
The D package is available taped and reeled. Add the suffix R to the device type,(e.g., uA748CDR).
Copyright 1990, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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1
uA748C, uA748M
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS095 – D921, DECEMBER 1970 – REVISED OCTOBER 1990
schematic
COMP
IN –
VCC +
34 Ω
IN +
OUT
34 Ω
N2
1 kΩ
50 kΩ
1 kΩ
VCC –
N1/COMP
Resistor values shown are nominal.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
uA748C
uA748M
UNIT
Supply voltage, VCC + (see Note 1)
18
22
V
Supply voltage, VCC – (see Note 1)
– 18
– 22
V
Differential input voltage (see Note 2)
± 30
± 30
V
± 15
± 15
V
Voltage range between either offset null terminal (N1/N2) and VCC –
– 0.5 to 2
– 0.5
V
Duration of output short circuit (see Note 4)
unlimited
unlimited
Input voltage (either input, see Notes 1 and 3)
Continuous total power dissipation
See Dissipation Rating Table
0 to 70
– 55 to 125
°C
– 65 to 150
– 65 to 150
°C
300
°C
Operating free-air temperature range
Storage temperature range
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds
JG or U package
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
D or P package
NOTES: 1.
2.
3.
4.
°C
260
All voltage values, unless otherwise noted, are with respect to the midpoint between VCC + and VCC –.
Differential voltages are at the noninverting input terminal with respect to the inverting input terminal.
The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15V, whichever is less.
The output may be shorted to ground or either power supply. For the uA748M only, the unlimited duration of the short circuit applies
at (or below) 125°C case temperature or 75°C free-air temperature
DISSIPATION RATING TABLE
2
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING
FACTOR
D
500 mW
5.8 mW/°C
DERATE
ABOVE TA
64°C
464 mW
N/A
JG
500 mW
8.4 mW/°C
90°C
500 mW
210 mW
P
500 mW
N/A
N/A
500 mW
N/A
U
500 mW
5.4 mW/°C
57°C
432 mW
135 mW
POST OFFICE BOX 655303
TA = 70°C
POWER RATING
• DALLAS, TEXAS 75265
TA = 125°C
POWER RATING
uA748C, uA748M
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS095 – D921, DECEMBER 1970 – REVISED OCTOBER 1990
electrical characteristics at specified free-air temperature, VCC ± = ±15 V, CC = 30 pF
uA748C
TEST CONDITIONS†
PARAMETER
MIN
25°C
VIO
Input offset voltage
VO = 0
Full range
IIO
Input offset current
VO = 0
Full range
IIB
Input bias current
VO = 0
Full range
VICR
VO(PP)
Maximum peak
output voltage swing
80
± 12
RL= 10 kΩ
25°C
± 12
RL ≥ 10 kΩ
RL= 2 kΩ
Full range
± 12
25°C
± 10
RL ≥ 2 kΩ
Full range
± 10
RL ≥ 2 kΩ,
25°C
20
Full range
15
25°C
0.3
ri
Input resistance
ro
Output resistance
Ci
Input capacitance
CMRR
Common-mode
rejection ratio
VIC = VICRmin,
VO = 0
Supply-voltage
sensitivity
(∆VIO / ∆VCC)
VCC = ± 9 V to ± 15 V,
VO = 0
VO = 0,
See Note 5
25°C
Short-circuit
output current
ICC
Supply current
No load
load,
VO = 0
PD
Power dissipation
(each amplifier)
No load
load,
VO = 0
1
5
6
200
20
500
± 13
80
70
Full range
70
25°C
500
1500
± 12
± 13
± 14
± 12
± 10
nA
V
± 13
50
200
V/mV
25
2
0.3
90
70
2
MΩ
75
Ω
1.4
pF
90
dB
70
30
150
30
150
150
± 25
± 40
± 25
± 40
25°C
1.7
2.8
1.7
2.8
Full range
3.3
50
µV/V
150
25°C
25°C
nA
± 10
200
Full range
Full range
mV
± 14
± 12
± 13
UNIT
V
± 12
1.4
25°C
200
500
75
25°C
IOS
MAX
800
± 12
VO = ± 10 V
6
TYP
300
25°C
AVD
kSVS
20
Full range
Large-signal
g
g
differential
voltage amplification
MIN
7.5
25°C
input voltage range
uA748M
MAX
1
25°C
Common-mode
TYP
3.3
85
50
100
85
100
mA
mA
mW
† All characteristics are measured under open-loop conditions with zero common-mode input voltage unless otherwise specified. Full range for
uA748C is 0°C to 70°C and for uA748M is – 55°C to 125°C.
NOTE 5: This typical value applies only at frequencies above a few hundred hertz because of the effects of drift and thermal feedback.
operating characteristics, VCC ± = ± 15 V, TA = 25°C
PARAMETER
tr
SR
Rise time
TEST CONDITIONS
MIN
TYP
0.3
Overshoot factor
mV RL = 2 kΩ
pF CC = 30 pF,
pF See Figure 1
VI = 20 mV,
kΩ, CL = 100 pF,
5%
Slew rate at unity gain
VI = 10 V, RL = 2 kΩ, CL = 100 pF, CC = 30 pF, See Figure 1
0.5
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
MAX
UNIT
µs
V/µs
3
uA748C, uA748M
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS095 – D921, DECEMBER 1970 – REVISED OCTOBER 1990
PARAMETER MEASUREMENT INFORMATION
N2 (open)
–
VI
OUT
+
Input
0V
CL
100 pF
INPUT VOLTAGE
WAVEFORM
COMP
RL = 2 kΩ
N1
CC = 30 pF
TEST CIRCUIT
Figure 1. Rise Time, Overshoot, and Slew Rate
TYPICAL CHARACTERISTICS†
INPUT BIAS CURRENT
vs
FREE-AIR TEMPERATURE
INPUT OFFSET CURRENT
vs
FREE-AIR TEMPERATURE
100
400
VCC ± = ± 15 V
80
70
60
ÏÏÏÏ
ÏÏÏÏ
uA748C
50
40
30
VCC ± = ± 15 V
350
I IB – Input Bias Current – nA
IIB
IIO
I IO – Input Offset Current – nA
90
300
250
ÏÏÏ
ÏÏÏ
uA748C
200
150
100
20
50
10
0
– 60 – 40 – 20 0
20 40 60 80 100 120 140
TA – Free-Air Temperature – °C
0
– 60 – 40 – 20 0
20 40 60 80 100 120 140
TA – Free-Air Temperature – °C
Figure 2
Figure 3
† Data at high and low temperatures are applicably only within the rated operating free-air temperature range of the particular devices.
4
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uA748C, uA748M
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS095 – D921, DECEMBER 1970 – REVISED OCTOBER 1990
TYPICAL CHARACTERISTICS
MAXIMUM PEAK OUTPUT VOLTAGE
vs
LOAD RESISTANCE
MAXIMUM PEAK OUTPUT VOLTAGE
vs
FREQUENCY
± 13
± 12
± 11
± 10
±9
±8
±7
ÁÁ
ÁÁ
±5
0.1
0.2
0.4
0.7 1
2
4
RL – Load Resistance – kΩ
7
VCC ± = ± 15 V
RL = 10 kΩ
CC = 30 pF
TA = 25°C
± 18
± 16
± 14
± 12
± 10
±8
±6
ÁÁ
ÁÁ
±6
±4
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
± 20
VCC ± = ± 15 V
TA = 25°C
VOM
VOM – Maximum Peak Output Voltage – V
VOM
VOM – Maximum Peak Output Voltage – V
± 14
±4
±2
10
0
100
1k
Figure 4
OPEN-LOOP LARGE-SIGNAL DIFFERENTIAL
VOLTAGE AMPLIFICATION
vs
FREQUENCY
10 7
RL = 2 kΩ
TA = 25°C
AAVD
VD – Differential Voltage Amplification
AVD
A
VD – Differential Voltage Amplification V/mV
400
200
100
40
10
2
4
6
8
10 12 14 16
|VCC ±| – Supply Voltage – V
18
20
VCC ± = ± 15 V
RL = 2 kΩ
CC = 30 pF
TA = 25°C
106
105
104
103
102
ÁÁ
ÁÁ
20
0
1M
Figure 5
OPEN-LOOP LARGE-SIGNAL DIFFERENTIAL
VOLTAGE AMPLIFICATION
vs
SUPPLY VOLTAGE
ÁÁ
ÁÁ
ÁÁ
10 k
100 k
f – Frequency – Hz
101
1
10 – 1
1
10
Figure 6
100
1 k 10 k 100 k 1 M
f – Frequency – Hz
10 M 100 M
Figure 7
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5
uA748C, uA748M
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS095 – D921, DECEMBER 1970 – REVISED OCTOBER 1990
TYPICAL CHARACTERISTICS
OUTPUT VOLTAGE
vs
ELAPSED TIME
COMMON-MODE REJECTION RATIO
vs
FREQUENCY
28
VCC ± = ± 15 V
RS = 10 kΩ
CC = 30 pF
TA = 25°C
90
80
24
20
VO
VO – Output Voltage – mV
CMRR – Common-Mode Rejection Ratio – dB
100
70
60
50
90%
16
12
ÁÁ
ÁÁ
40
30
20
8
4
10%
ÏÏÏ
0
10
0
tr
–4
1
10
100
1 k 10 k 100 k 1 M
f – Frequency – Hz
10 M 100 M
0
0.5
Figure 8
VOLTAGE-FOLLOWER
LARGE-SIGNAL PULSE RESPONSE
8
VCC ± = ± 15 V
RL = 2 kΩ
CL = 100 pF
CC = 30 pF
TA = 25°C
Input and Output Voltages – V
ÏÏÏÏ
ÏÏÏÏ
4
Output
2
0
Input
–2
–4
–6
–8
0
10
20
30 40 50
t – Time – µs
60
70
80
Figure 10
6
1
1.5
t – Time – µs
Figure 9
6
POST OFFICE BOX 655303
VCC ± = ± 15 V
RL = 2 kΩ
CL = 100 pF
CC = 30 pF
TA = 25°C
• DALLAS, TEXAS 75265
90
2
2.5
uA748C, uA748M
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS095 – D921, DECEMBER 1970 – REVISED OCTOBER 1990
TYPICAL APPLICATION DATA
VCC +
–
+
VO
VI
COMP
VCC –
N1
N2
(open)
30 pF
ri = 400 MΩ
ci = 1 pF
BW = 1 MHz
Figure 11. Unity-Gain Voltage Follower
R2
VCC +
R1
–
VI
+ * R2
R1
R1 @ 30 pF
C w
R1 ) R2
R3 + R1 @ R2
R1 ) R2
VO
VI
R3
+
VO
RL ≥ 2 kΩ
C
VCC –
N1
COMP
N2
5 MΩ
CC
5.1 MΩ
Figure 12. Inverting Circuit With Adjustable Gain
Compensation and Offset Adjustment
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7
PACKAGE OPTION ADDENDUM
www.ti.com
23-Apr-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
Lead/Ball Finish
MSL Peak Temp (3)
UA748CD
OBSOLETE
SOIC
D
8
TBD
Call TI
Call TI
UA748CDR
OBSOLETE
SOIC
D
8
TBD
Call TI
Call TI
UA748CDR
OBSOLETE
SOIC
D
8
TBD
Call TI
Call TI
UA748CP
OBSOLETE
PDIP
P
8
TBD
Call TI
Call TI
UA748CP
OBSOLETE
PDIP
P
8
TBD
Call TI
Call TI
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 1
MECHANICAL DATA
MPDI001A – JANUARY 1995 – REVISED JUNE 1999
P (R-PDIP-T8)
PLASTIC DUAL-IN-LINE
0.400 (10,60)
0.355 (9,02)
8
5
0.260 (6,60)
0.240 (6,10)
1
4
0.070 (1,78) MAX
0.325 (8,26)
0.300 (7,62)
0.020 (0,51) MIN
0.015 (0,38)
Gage Plane
0.200 (5,08) MAX
Seating Plane
0.010 (0,25) NOM
0.125 (3,18) MIN
0.100 (2,54)
0.021 (0,53)
0.015 (0,38)
0.430 (10,92)
MAX
0.010 (0,25) M
4040082/D 05/98
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
For the latest package information, go to http://www.ti.com/sc/docs/package/pkg_info.htm
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TI warrants performance of its hardware products to the specifications applicable at the time of sale in
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