TS941 TS942 TS944
Output rail-to-rail micropower operational amplifiers
Features
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■
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■
■
■
■
■
Rail-to-rail output voltage swing
Micropower consumption (1.2 µA)
Single supply operation (2.5 V to 10 V)
CMOS inputs
Ultra low input bias current (1 pA)
ESD protection (2 kV)
Latch-up immunity (class A)
Available in SOT23-5 micropackage
Output
VDD
1
TS941ILT
5
V CC
2
Non-inverting input
3
4
Inverting input
TS941ID-TS941IDT
N.C.
1
-
+
Applications
■
■
■
■
■
8 N.C.
7
V
CC
6 Output 2
5 N.C.
Inverting Input 1 2
Non-inverting Input 1
3
Battery-powered systems (alarm)
Portable communication systems (pagers)
Smoke/gas/fire detectors
Instrumentation and sensoring
PH meter
V DD
4
TS942IN-TS942ID-TS942IDT-
TS942IPT
Output 1
Inverting Input 1
1
2
3
4
-
+
-
+
Description
The TS94x (single, dual and quad) series are
operational amplifiers characterized for 2.5 V to
10 V operation over -40° C to +85° C temperature
range.
They exhibit excellent consumption -1.2 µA, while
featuring 10 kHz gain bandwidth product, 1.5 mA
output capability and output rail-to-rail operation -
2.85 V typ @ 3 V with R
L
=10 kΩ
.
The TS94x op-amps are ideal for battery-powered
systems, where very low supply current and
output rail-to-rail are required. Their very low -
1 pA typ input bias current and constant supply
current over supply voltage enhance TS94x’s
performance near the end of the battery charge or
battery life.
8
V
CC
7 Output 2
6 Inverting Input 2
5 Non-inverting Input 2
Non-inverting Input 1
V
DD
TS944IN-TS944ID-TS944IDT-
TS944IPT
Output 1 1
Inverting Input 1 2
Non-inverting Input 1 3
V
CC
4
Non-inverting Input 2 5
Inverting Input 2 6
Output 2 7
+
-
+
-
-
+
-
+
14 Output 4
13 Inverting Input 4
12 Non-inverting Input 4
11 V
DD
10 Non-inverting Input 3
9
8
Inverting Input 3
Output 3
April 2008
Rev 4
1/19
www.st.com
19
Absolute maximum ratings and operating conditions
TS941 TS942 TS944
1
Absolute maximum ratings and operating conditions
Table 1.
Symbol
V
CC
V
id
V
in
T
stg
T
j
Supply voltage
(1)
Differential input voltage
(2)
Input voltage range
(3)
Storage temperature range
Maximum junction temperature
Thermal resistance junction to ambient
(4)
SOT23-5
DIP8
DIP14
SO-8
SO-14
TSSOP8
TSSOP14
Thermal resistance junction to case
(4)
SOT23-5
DIP8
DIP14
SO-8
SO-14
TSSOP8
TSSOP14
HBM: human body model
(5)
MM: machine model
(6)
(TS941, TS942)
ESD
CDM: charged device model
(7)
TS941 - TS944IDT
TS942 - TS944IPT
Latch-up immunity
Lead temperature (soldering, 10sec)
1. All voltage values, except differential voltage are with respect to network terminal.
2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
3. The magnitude of input and output voltages must never exceed V
CC
+0.3V.
4. Short-circuits can cause excessive heating and destructive dissipation. R
th
are typical values.
5. 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.
6. 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.
7. Charged device model: all pins and the package are charged together to the specified voltage and then
discharged directly to the ground through only one pin. This is done for all pins.
Absolute maximum ratings (AMR)
Parameter
Value
12
±12
V
DD
-0.3 to V
CC
+0.3
-65 to +150
150
250
85
66
125
103
120
100
81
41
33
40
31
37
32
2
200
1.5
1
200
250
Unit
V
V
V
°C
°C
R
thja
°C/W
R
thjc
°C/W
kV
V
kV
mA
°C
2/19
TS941 TS942 TS944
Table 2.
Symbol
V
CC
V
icm
T
oper
Supply voltage
Absolute maximum ratings and operating conditions
Operating conditions
Parameter
Value
2.5 to 10
V
DD
-0.2 to V
CC
-1.3
-40 to + 85
Unit
V
V
°C
Common mode input voltage range
Operating free air temperature range
3/19
Electrical characteristics
TS941 TS942 TS944
2
Electrical characteristics
Table 3.
Symbol
Input offset voltage
TS941/2/4
TS941/2/4A
TS941/2/4B
Input offset voltage drift
Input offset current
(1)
Input bias current
(1)
Common mode rejection ratio
Supply voltage rejection ratio
Large signal voltage gain
V
O
= 2V
pp
, R
L
= 1MΩ
High level output voltage
V
ID
= 100mV, R
L
= 1MΩ
R
L
= 10kΩ
Low level output voltage
V
ID
= -100mV, R
L
= 1MΩ
R
L
= 10kΩ
Output source current
V
ID
= 100mV, V
O
= V
DD
Output sink current
V
ID
= -100mV, V
O
= V
CC
Supply current (per amplifier), A
VCL
= 1, no load
,
Gain bandwidth product, R
L
= 1MΩ C
L
= 50pF
Slew rate, R
L
= 1MΩ C
L
= 50pF
,
Phase margin, C
L
= 50pF
3
350
280
2.45
2.3
60
50
7
1
1
85
78
100
100
150
V
CC
= +2.5V, V
DD
= 0V, R
L
connected to V
CC
/2, T
amb
= 25°C (unless
otherwise specified)
Parameter
Min.
Typ.
Max.
Unit
V
io
ΔV
io
I
io
I
ib
CMR
SVR
A
vd
10
5
2
mV
µV/°C
pA
pA
dB
dB
dB
V
OH
2.49
2.4
1
100
5
200
V
V
OL
mV
I
o
650
500
1.2
10
4.5
65
1.8
µA
I
CC
GBP
SR
φm
µA
kHz
V/ms
Degrees
1. Maximum values include unavoidable inaccuracies of the industrial tests.
4/19
TS941 TS942 TS944
Table 4.
Symbol
Input offset voltage
TS941/2/4
TS941/2/4A
TS941/2/4B
Input offset voltage drift
Input offset current
(2)
Input bias current
(2)
Common mode rejection ratio
Supply voltage rejection ratio
Large signal voltage gain
V
O
= 2V
pp
,R
L
= 1MΩ
High level output voltage
V
ID
= 100mV, R
L
= 1MΩ
R
L
= 10kΩ
Low level output voltage
V
ID
= -100mV, R
L
= 1MΩ
R
L
= 10kΩ
Output source current
V
ID
= 100mV, V
O
= V
DD
Output sink current
V
ID
= -100mV, V
O
= V
CC
Supply current (per amplifier), A
VCL
= 1, no load
Gain bandwidth product, R
L
= 1MΩ C
L
= 50pF
,
,
Slew rate, R
L
= 1MΩ C
L
= 50pF
Phase margin, C
L
= 50pF
3
60
50
Electrical characteristics
V
CC
= +3V, V
DD
= 0V, R
L
connected to V
CC
/2,T
amb
= 25°C (unless
otherwise specified)
(1)
Parameter
Min.
Typ.
Max.
Unit
V
io
ΔV
io
I
io
I
ib
CMR
SVR
A
vd
10
5
2
7
1
1
85
85
100
100
150
mV
µV/°C
pA
pA
dB
dB
dB
V
OH
2.9
2.8
2.99
2.85
1
100
5
200
V
V
OL
mV
I
o
680
650
1500
1300
1.2
10
4.5
65
1.8
µA
I
CC
GBP
SR
φm
µA
kHz
V/ms
Degrees
1. All electrical values are guaranteed with correlation measurements at 2.5 V and 5 V.
2. Maximum values include unavoidable inaccuracies of the industrial tests.
5/19
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