
TL321C, TL321I
OPERATIONAL AMPLIFIERS
SLOS085 – D2343, APRIL 1977 – REVISED OCTOBER 1990
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Copyright
1990, Texas Instruments Incorporated
1
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.
Wide Range of Single Supply
Voltages . . . 3 V to 30 V or Dual Supplies
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
Differential Input Voltage Range Equal to
Maximum-Rated Supply Voltage . . .
±
32 V
Open-Loop Differential Voltage
Amplification . . . 100 V/mV Typ
Internal Frequency Compensation
description
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.
1
2
3
4
8
7
6
5
NC
IN–
IN+
GND
NC
V
CC
OUT
NC
TTL321C, TL321I . . . D OR P PACKAGE
(TOP VIEW)
NC – No internal connection
symbol
PACKAGE
SMALL OUTLINE
(D)
PLASTIC DIP
(P)
TA
0
°
C to 70
°
C
–25
°
C to 85
°
C
The D packages are available taped and reeled. Add the suffix R to
TL321CD
TL321CP
AVAILABLE OPTIONS
VIO MAX
at 25
°
C
7 mV
5 mV
TL321ID
TL321IP
IN+
IN–
OUT
+
–