®
TS321
LOW POWER SINGLE OPERATIONAL AMPLIFIER
.
.
.
.
.
.
LARGE OUTPUT VOLTAGE SWING :
0 to 3.5V min. (@V
CC
= 5V)
LOW SUPPLY CURRENT : 300µA
LOW INPUT BIAS CURRENT : 20nA
LOW INPUT OFFSET VOLTAGE : 2mV max.
WIDE POWER SUPPLY RANGE :
SINGLE SUPPLY : +3V TO +30V
DUAL SUPPLIES :
±1.5V
TO
±15V
STABLE WITH HIGH CAPACITIVE LOADS
D
SO8
(Plastic Micropackage)
L
SOT23-5
(Tiny Package)
DESCRIPTION
The TS321 is intended for cost sensitive applica-
tions where space saving is of great importance.
This bipolar Op-Amp offers the benefits of a re-
duced component size (SOT23-5 package), with
specifications that match (or better) industry stand-
ard devices (like the popular LM358A, LM324,
etc.). The TS321 has an input common mode range
(Vicm) that includes ground, therefore can be em-
ployed in single supply applications.
ORDER CODES
Part
Number
TS321I
TS321AI
Temperature
Range
-40
o
C, +125
o
C
Package
D
•
•
L
•
•
SOT
Marking
K401
K402
PIN CONNECTIONS
(top view)
SO8
SOT23-5
N.C .
Inverting input
Non-inverting input
1
2
3
-
+
8
7
6
5
N.C .
Output
1
5
+
V
CC
+
V
CC
Output
N.C .
V
-
2
CC
Non-inve rting inp ut
3
4
V
CC
-
4
Inve rting inp ut
December 1998
1/8
TS321
SCHEMATIC DIAGRAM
V
CC
6
µ
A
4
µ
A
C
C
10 0
µ
A
Q5
Q6
Inve rting
inpu t
Q2
Q1
Q3
Q4
Q11
Output
Q13
Q10
Q12
Q7
R
SC
Non-inve rting
input
Q8
Q9
50
µ
A
GND
ABSOLUTE MAXIMUM RATINGS
Symbol
V
cc
V
i
V
id
-
I
in
T
oper
T
stg
Supply Voltage
Input Voltage
Differential Input Voltage
Output Short-circuit Duration - (note 1)
Input Current – (note 5)
Operating Free Air Temperature Range
Storage Temperature Range
Parameter
Value
±16
or 32
-0.3 to +32
+32
Infinite
50
-40 to +125
-65 to +150
mA
o
o
Unit
V
V
V
C
C
2/8
TS321
ELECTRICAL CHARACTERISTICS
V
CC+
=
+5V, V
CC–
=
Ground, V
O
=
1.4V, T
amb
=
+25
o
C (unless otherwise specified)
Symbol
V
io
Parameter
Input Offset Voltage (note 3)
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max
.
I
io
Input Offset Current
T
amb
= +25
o
C
T
min.
≤
T
amb
≤
T
max
.
Input Bias Current (note 2)
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max
.
Large Signal Voltage Gain
+
(V
CC
= +15V, R
L
= 2kΩ, V
O
= 1.4V to 11.4V)
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max
.
Supply Voltage Rejection Ratio (R
S
≤
10kΩ)
+
(V
CC
= 5V to 30V)
o
T
amb
= +25 C
Supply Current, no load
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max
.
V
icm
V
CC
= +5V
V
CC
= +30V
V
CC
= +5V
V
CC
= +30V
TS321A
TS321A
2
Min.
Typ.
0.5
Max.
4
2
5
3
nA
30
50
nA
20
150
200
V/mV
50
25
100
dB
65
110
µA
300
400
350
600
800
800
1000
V
0
0
65
20
10
12
85
mA
40
20
50
40
60
mA
µA
mA
V
CC
-1.5
V
CC
-2
dB
Unit
mV
I
ib
A
vd
SVR
I
CC
Input Common Mode Voltage Range
(V
CC
= +30V) - (note 4)
o
T
amb
= +25 C
T
min.
≤
T
amb
≤
T
max.
Common-mode Rejection Ratio (R
S
≤
10kΩ)
o
T
amb
= +25 C
Output Current Source (V
id
= +1V)
V
CC
= +15V, V
o
= +2V
Output Sink Current (V
id
= -1V)
V
CC
= +15V, V
o
= +2V
V
CC
= +15V, V
o
= +0.2V
Short Circuit to Ground V
CC
= +15V
CMR
I
source
I
sink
I
o
3/8
TS321
ELECTRICAL CHARACTERISTICS
V
CC+
=
+5V, V
CC–
=
Ground, V
O
=
1.4V, T
amb
=
+25
o
C (unless otherwise specified)
Symbol
V
OH
Parameter
High Level Output Voltage
(V
CC
= +30V)
T
amb
= +25
o
C
T
min
.
≤
T
amb
≤
T
max
.
o
T
amb
= +25 C
T
min
.
≤
T
amb
≤
T
max
.
(V
CC
= +5V, R
L
= 2kΩ)
o
T
amb
= +25 C
T
min
.
≤
T
amb
≤
T
max
.
Min.
Typ.
Max.
Unit
V
R
L
= 2kΩ
R
L
= 10kΩ
26
25.5
27
26.5
3.5
3
mV
5
15
20
V/µs
0.4
MHz
0.8
60
0.015
40
nV
Hz
√
Degrees
%
27
28
V
OL
Low Level Output Voltage (R
L
= 10kΩ)
T
amb
= +25
o
C
T
min
.
≤
T
amb
≤
T
max
.
Slew Rate V
CC
= 15V, V
I
= 0.5 to 3V, R
L
= 2kΩ,
o
C
L
= 100pF, T
amb
= +25 C, unity gain)
Gain Bandwidth Product V
CC
= 30V, f = 100kHz,
T
amb
= +25
o
C, V
in
= 10mV, R
L
= 2kΩ, C
L
= 100pF
Phase Margin
Total Harmonic Distortion f = 1kHz, A
V
= 20dB, R
L
= 2kΩ,
V
O
= 2V
pp
, C
L
= 100pF, T
amb
= +25
o
C, V
CC
= 30V
Equivalent Input Noise Voltage
f = 1kHz, R
s
= 100Ω, V
CC
= 30V
1.
2.
3.
4.
5.
SR
GBP
∅m
THD
e
n
Notes :
Short-circuits from the output to V
CC
can cause excessive heating if V
CC
> 15V. The maximum output current is approximately
40mA independent of the magnitude of V
CC
.
The direction of the input current is out of the IC. This current is essentially constant, independent of the state of the output
so no loading change exists on the input lines.
Vo = 1.4V, Rs = 0Ω, 5V < V
CC+
< 30V, 0 < V
ic
< V
CC+
- 1.5V.
The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V.
The upper end of the common-mode voltage range is V
CC+
- 1.5V, but either or both inputs can go to +32V without damage.
This input current only exists when the voltage at any of the input leads is driven negative. It is due to the collector-base
junction of the input PNP transistor becoming forward biased and thereby acting as input diodes clamps.
In addition to this diode action, there is also NPN parasitic action on the IC chip. this transistor action can cause the output
voltages of the Op-amps to go to the V
CC
voltage level (or to ground for a large overdrive) for the time duration than an input
is driven negative. This is not destructive and normal output will set up again for input voltage higher than -0.3V.
4/8
TS321
TYPICAL SINGLE - SUPPLY APPLICATIONS
AC COUPLED INVERTING AMPLIFIER
AC COUPLED NON-INVERTING AMPLIFIER
R
f
100kΩ
C
I
R1
10kΩ
R
f
R1
(as shown A
V
= -10)
A
V
= -
C
o
e
o
0
R1
100kΩ
R2
1MΩ
C1
0.1µF
A
V
= 1 +
R2
R1
(as s hown A = 11)
V
C
o
2V
P
P
C
I
R
B
6.2k
Ω
e
o
0
R
L
10kΩ
2V
P
P
e
I
~
V
CC
R2
100kΩ
R
B
6.2k
Ω
R3
100kΩ
R
L
10kΩ
e
I
~
R3
1MΩ
R4
100kΩ
C1
10
µ
F
V
CC
C2
10µF
R5
100kΩ
NON-INVERTING DC GAIN
DC SUMMING AMPLIFIER
e
1
100k
Ω
A
V
= 1 +
R2
R1
10k
Ω
1/4
TS324
e
O
+5V
(As s hown A
V
= 101)
100k
Ω
e
2
100k
Ω
100k
Ω
100k
Ω
e
O
R2
1M
Ω
R1
10k
Ω
e
O
(V)
e
3
0
e
I
(mV)
e
4
100k
Ω
e
o
= e
1
+ e
2
- e
3
- e
4
where (e
1
+ e
2
)
≥
(e
3
+ e
4
)
to keep e
o
≥
0V
5/8
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