TS94x, TS94xA, TS94xB
Output rail-to-rail micropower operational amplifiers
Features
■
■
■
■
■
■
■
■
TS941ILT
Output
VDD
1
5
V CC
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
N.C.
1
-
+
2
Non-inverting input
3
4
Inverting input
TS941ID-TS941IDT
8 N.C.
7
V
CC
6 Output 2
5 N.C.
Inverting Input 1 2
Non-inverting Input 1
3
Applications
■
■
■
■
■
V DD
4
Battery-powered systems (alarm)
Portable communication systems (pagers)
Smoke/gas/fire detectors
Instrumentation and sensoring
PH meter
TS942ID-TS942IDT-TS942IPT
Output 1
Inverting Input 1
Non-inverting Input 1
V
DD
1
2
3
4
-
+
-
+
8
V
CC
7 Output 2
6 Inverting Input 2
5 Non-inverting Input 2
Description
The TS94x (single, dual and quad) series are
operational amplifiers characterized for 2.5 V to
10 V operation over a -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 typical at 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 typical input bias current and constant
supply current over supply voltage enhance the
devices’ performance near the end of the battery
charge or battery life.
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
Table 1.
Reference
TS94x
TS94xA
TS94xB
Device summary
Selection on offset voltage
TS941, TS942, TS944
TS941A, TS942A, TS944A
TS941B, TS942B, TS944B
October 2009
Doc ID 6972 Rev 6
1/18
www.st.com
18
Absolute maximum ratings and operating conditions
TS94x, TS94xA, TS94xB
1
Absolute maximum ratings and operating conditions
Table 2.
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
SO-8
SO-14
TSSOP8
TSSOP14
Thermal resistance junction to case
(4)
SOT23-5
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
+0.3 V.
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
Parameter
Value
12
± V
CC
V
DD
-0.3 to V
CC
+0.3
-65 to +150
150
250
125
103
120
100
81
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
2/18
Doc ID 6972 Rev 6
TS94x, TS94xA, TS94xB
Table 3.
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
Doc ID 6972 Rev 6
3/18
Electrical characteristics
TS94x, TS94xA, TS94xB
2
Electrical characteristics
Table 4.
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
= 2 V
pp
, R
L
= 1 MΩ
High level output voltage
V
ID
= 100 mV, R
L
= 1 MΩ
R
L
= 10 kΩ
Low level output voltage
V
ID
= -100 mV, R
L
= 1 MΩ
R
L
= 10 kΩ
Output source current
V
ID
= 100 mV, V
O
= V
DD
Output sink current
V
ID
= -100 mV, V
O
= V
CC
Supply current (per amplifier), A
VCL
= 1, no load
,
Gain bandwidth product, R
L
= 1 MΩ C
L
= 50 pF
Slew rate, R
L
= 1 MΩ C
L
= 50 pF
,
Phase margin, C
L
= 50 pF
3
350
280
2.45
2.3
60
50
7
1
1
85
78
100
100
150
V
CC
= +2.5 V, V
DD
= 0 V, 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.
4/18
Doc ID 6972 Rev 6
TS94x, TS94xA, TS94xB
Table 5.
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
= 2 V
pp
,R
L
= 1 MΩ
High level output voltage
V
ID
= 100 mV, R
L
= 1 MΩ
R
L
= 10 kΩ
Low level output voltage
V
ID
= -100 mV, R
L
= 1 MΩ
R
L
= 10 kΩ
Output source current
V
ID
= 100 mV, V
O
= V
DD
Output sink current
V
ID
= -100 mV, V
O
= V
CC
Supply current (per amplifier), A
VCL
= 1, no load
Gain bandwidth product, R
L
= 1 MΩ C
L
= 50 pF
,
,
Slew rate, R
L
= 1 MΩ C
L
= 50 pF
Phase margin, C
L
= 50 pF
3
60
50
Electrical characteristics
V
CC
= +3 V, V
DD
= 0 V, 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.
Doc ID 6972 Rev 6
5/18
