TL321C, TL321I OPERATIONAL AMPLIFIERS •

TL321C, TL321I OPERATIONAL AMPLIFIERS  •
TL321C, TL321I
OPERATIONAL AMPLIFIERS
SLOS085 – D2343, APRIL 1977 – REVISED OCTOBER 1990
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TTL321C, TL321I . . . D OR P PACKAGE
(TOP VIEW)
Wide Range of Single Supply
Voltages . . . 3 V to 30 V or Dual Supplies
NC
IN –
IN +
GND
Low Supply Current Independent of Supply
Voltage . . . 0.8 mA Typ
Common-Mode Input Voltage Range
Includes Ground Allowing Direct Sensing
Near Ground
Low Input Bias and Offset Parameters
– Input Offset Voltage . . . 2 mV Typ
– Input Offset Current . . . 3 nA Typ
(TL321I)
– Input BIas Current . . . 45 nA Typ
Internal Frequency Compensation
7
3
6
4
5
NC
VCC
OUT
NC
symbol
IN+
+
IN–
–
OUT
AVAILABLE OPTIONS
TA
VIO MAX
at 25°C
0°C to 70°C
–25°C to 85°C
description
8
2
NC – No internal connection
Differential Input Voltage Range Equal to
Maximum-Rated Supply Voltage . . . ±32 V
Open-Loop Differential Voltage
Amplification . . . 100 V/mV Typ
1
PACKAGE
SMALL OUTLINE
(D)
PLASTIC DIP
(P)
7 mV
TL321CD
TL321CP
5 mV
TL321ID
TL321IP
The D packages are available taped and reeled. Add the suffix R to
the device type, (e.g., TL321CDR).
The TL321 is a high-gain, frequency-compensated operational amplifier that is designed specifically to operate
from a single supply over a wide range of voltages. Operation from split supplies is also possible as long as the
difference between the two supplies is 3 V to 30 V and pin 7 is at least 1.5 V more positive than the input
common-mode voltage. The low supply current is independent of the magnitude of the supply voltage.
Applications include transducer amplifiers, dc amplification blocks, and all the conventional operational
amplifier circuits that now can be more easily implemented in single-supply-voltage systems. For example, the
TL321 can be operated directly off of the standard 5-V supply that is used in digital systems and will easily
provide the required interface electronics without requiring additional ±15-V supplies.
The TL321C is characterized for operation from 0°C to 70°C. The TL321I is characterized for operation from
– 25 °C to 85°C.
Copyright  1990, Texas Instruments Incorporated
PRODUCTION DATA documents contain information 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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
TL321C, TL321I
OPERATIONAL AMPLIFIERS
schematic
VCC
≈ 6-µA
Current
Regulator
≈ 6-µA
Current
Regulator
≈ 100-µA
Current
Regulator
OUTPUT
INVERTING
INPUT IN–
≈ 50-µA
Current
Regulator
NONINVERTING
INPUT IN+
GND
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 V
Differential input voltage (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 32 V
Input voltage range (either input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to 32 V
Duration of output short circuit to ground at (or below) 25°C free-air temperature
(VCC ≤ 15 V) (see Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unlimited
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range: TL321C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
TL321I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 25°C to 85°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
NOTES: 1. All voltage values, except differential voltages, are with respect to the network ground terminal.
2. Differential voltages are at the noninverting input terminal with respect to the inverting input terminal.
3. Short circuits from the output to VCC can cause excessive heating and eventual destruction.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING
FACTOR
D
680 mW
P
680 mW
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
5.8 mW/°C
DERATE
ABOVE TA
33°C
464 mW
377 mW
8.0 mW/°C
65°C
640 mW
520 mW
recommended operating conditions
MIN
Single supply voltage, VCC
2
5
NOM
MAX
UNIT
30
V
Dual supply voltage, VCC+
2.5
15
V
Dual supply voltage, VCC–
– 2.5
– 15
V
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TL321C, TL321I
OPERATIONAL AMPLIFIERS
electrical characteristics at specified free-air temperature, VCC = 5 V (unless otherwise noted)
VIO
TL321C
TEST CONDITIONS†
PARAMETER
VIC = VICR min,
VCC = 5 V to 30 V,
Input offset voltage
MIN
MAX
2
7
25°C
Full range
Full range
VO = 1.4 V
IIB
Input bias current
VO = 1.4 V
VICR
Common-mode input voltage
range
Full range
High-level output voltage
VCC = 30 V,
RL ≥ 10 kΩ
RL ≥ 2 kΩ
VOL
Low-level output voltage
RL ≥ 10 kΩ
AVD
Large-signal differential
voltage amplification
VCC = 15 V,
VO = 1 V to 11 V,
RL = 2 kΩ
CMRR
Common-mode rejection ratio
kSVR
Supply voltage rejection ratio
(∆VCC/∆VIO)
Source
IO
ICC
Output current
Supply current
Sink
MAX
2
5
UNIT
7
50
3
150
25°C
VCC = 5 V to 30 V
VOH
5
– 45
Full range
25°C
VCC = 30 V,
RL = 2 kΩ
TYP
9
25°C
Input offset current
MIN
mV
VO = 1.4 V,
RS = 50 kΩ
IIO
TL321I
TYP
– 250
– 45
– 500
0 to
VCC –1.5
0 to
VCC –1.5
Full range
26
Full range
27
25°C
3.5
30
100
– 150
– 300
0 to
VCC –1.5
0 to
VCC –1.5
nA
nA
V
26
28
27
V
28
3.5
Full range
5
20
mV
Full range
15
VIC = VICR min,
RS = 50 kΩ
25°C
65
85
70
85
dB
VCC = 5 V to 30 V,
RS = 50 kΩ
25°C
65
100
65
100
dB
25°C
– 20
– 40
– 25
– 40
Full range
– 10
– 20
– 10
– 20
25°C
10
20
10
20
Full range
5
8
5
8
VID = – 1 V,
VO = 200 V
25°C
12
50
12
50
No load,
VO = 15 V,
VCC = 30 V
Full range
No load,
VO = 2.5 V,
VCC = 5 V
Full range
VCC = 15 V.
VID = – 1 V,
VO = 15 V
50
20
25
VCC = 15 V.
VID = 1 V,
VO = 0
100
5
25°C
100
V/mV
25
2
mA
µA
2
mA
1
0.4
1
† All characteristics are measured under open-loop conditions with zero common-mode voltage unless otherwise specified. Full range is 0°C to
70°C for TL321C and – 25°C to 85°C for TL321I.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
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accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
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performed, except those mandated by government requirements.
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intellectual property right of TI covering or relating to any combination, machine, or process in which such
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Copyright  1998, Texas Instruments Incorporated
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