TS321
Low-power single operational amplifier
Datasheet
−
production data
Features
■
■
■
■
Large output voltage swing
– 0 to 3.5 V min. (V
CC
= 5 V)
Low supply current: 500 µA
Low input bias current: 20 nA
Low input offset voltage
– 2 mV max. for TS321A
– 4 mV max. for TS321
Wide power supply range
– Single supply: +3 to +30 V
– Dual supplies: ±1.5 to ±15 V
Stable with high capacitive loads
Pin connections (top view)
SOT23-5
(plastic package)
SO-8
(plastic micropackage)
■
■
Description
The TS321 device is intended for cost-sensitive
applications where space saving is of great
importance. This bipolar op amp offers the
benefits of a reduced component size (SOT23-5
package) with specifications that match (or are
better than) industry standard devices (such as
the popular LM358A, LM324 devices, and as
such). The TS321 device has an input common
mode range (V
icm
) that includes ground and
therefore can be employed in single supply
applications.
September 2012
This is information on a product in full production.
Doc ID 6298 Rev 8
1/15
www.st.com
15
Circuit schematics
TS321
1
Circuit schematics
Figure 1.
Schematic diagram
2/15
Doc ID 6298 Rev 8
TS321
Absolute maximum ratings and operating conditions
2
Table 1.
Symbol
V
CC+
V
i
V
id
Absolute maximum ratings and operating conditions
Absolute maximum ratings
Parameter
Supply voltage
Input voltage
Differential input voltage
Output short-circuit duration
(1)
I
in
T
stg
T
j
R
thja
Input current
(2)
Storage temperature range
Maximum junction temperature
Thermal resistance junction-to-ambient
(3)
SOT23-5
SO-8
Thermal resistance junction-to-case
(3)
SOT23-5
SO-8
HBM: human body model
(4)
MM: machine model
(5)
ESD
CDM: charged device model
(6)
SOT23-5
SO-8
Value
±16 to 32
-0.3 to +32
+32
Infinite
50
-65 to +150
+150
250
125
81
40
300
200
V
1000
1500
mA
°C
°C
°C/W
Unit
V
V
V
R
thjc
°C/W
1. Short-circuits from the output to V
CC
can cause excessive heating if V
CC
> 15 V. The maximum output current is
approximately 40 mA independent of the magnitude of V
CC
.
2. 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 during which an input is driven
negative. This is not destructive and normal output is restored when the input voltage goes back above -0.3 V.
3. Short-circuits can cause excessive heating. Destructive dissipation can result from simultaneous short-circuits on all
amplifiers. All values are typical.
4. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ resistor
between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating.
5. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the
device with no external series resistor (internal resistor < 5
Ω).
This is done for all couples of connected pin combinations
while the other pins are floating.
6. Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly
to ground through only one pin. This is done for all pins. The CDM value applies to SO-8 only.
Doc ID 6298 Rev 8
3/15
Absolute maximum ratings and operating conditions
Table 2.
Symbol
V
CC+
V
icm
T
oper
Supply voltage
Common mode input voltage range (V
CC+
= 30 V)
T
amb
= +25 °C
T
min
≤
T
amb
≤
T
max
Operating free air temperature range
TS321
Operating conditions
Parameter
Value
3 to 30
0 to V
CC+
-1.5
0 to V
CC+
-2
-40 to +125
Unit
V
V
°C
4/15
Doc ID 6298 Rev 8
TS321
Electrical characteristics
3
Table 3.
Symbol
Electrical characteristics
Electrical characteristics at V
CC+
= +5 V, V
CC-
= ground, V
o
= 1.4 V, T
amb
= +25 °C
(unless otherwise specified)
Parameter
Conditions
TS321
TS321A
T
min
≤
T
amb
≤
T
max
TS321
TS321A
T
min
≤
T
amb
≤
T
max
20
T
min
≤
T
amb
≤
T
max
V
CC+
= +15 V, R
L
= 2 kΩ V
o
= 1.4 to 11.4 V
,
T
min
≤
T
amb
≤
T
max
50
25
65
100
Min.
Typ.
0.5
Max.
4
2
mV
5
3
2
30
50
150
200
nA
nA
V/mV
dB
800
900
µA
600
900
1000
dB
mA
Unit
V
io
Input offset voltage
(1)
I
io
I
ib
A
vd
SVR
Input offset current
Input bias current
(2)
Large signal voltage
gain
Supply voltage rejection
R
s
≤
10 kΩ, V
CC+
= 5 to 30 V
ratio
V
CC+
= +5 V
V
CC+
= +30 V
T
min
≤
T
amb
≤
T
max
V
CC+
= +5 V
V
CC+
= +30 V
110
500
600
I
CC
Supply current, no load
CMR
I
source
Common mode rejection
R
s
≤
10 kΩ
ratio
Output current source
V
id
= +1 V
V
CC+
= +15 V, V
o
= +2 V
V
id
= -1 V
V
CC+
= +15 V, V
o
= +2 V
V
CC+
= +15 V, V
o
= +0.2 V
V
CC+
= +15 V
65
20
85
40
I
sink
I
o
Output sink current
Short-circuit to ground
10
12
20
50
40
60
mA
µA
mA
V
OH
V
CC+
= +30 V, R
L
= 2 kΩ
T
min
≤
T
amb
≤
T
max
V
CC+
= +30 V, R
L
= 10 kΩ
High level output voltage
T
min
≤
T
amb
≤
T
max
V
CC+
= +5 V, R
L
= 2 kΩ
T
min
≤
T
amb
≤
T
max
Low level output voltage
Slew rate
Gain bandwidth product
Phase margin
R
L
= 10 kΩ
T
min
≤
T
amb
≤
T
max
,
V
CC+
= +15 V, V
i
= 0.5 to 3 V, R
L
= 2 kΩ
C
L
= 100 pF, unity gain
V
CC+
= 30 V, f = 100 kHz, V
in
= 10 mV,
R
L
= 2 kΩ C
L
= 100 pF
,
26
25.5
27
26.5
3.5
3
27
28
V
V
OL
SR
GBP
φm
5
15
20
mV
V/μs
MHz
Degrees
0.4
0.8
60
Doc ID 6298 Rev 8
5/15
微控制器 MCU
