TS271, ,
[ Pobierz całość w formacie PDF ]TS271C,I,M
PROGRAMMABLE CMOS
SINGLE OPERATIONAL AMPLIFIERS
.
OFFSET NULL CAPABILITY (by external
compensation)
.
CONSUMPTION CURRENT AND DYNAMIC
PARAMETERS ARE STABLE REGARDING
THE VOLTAGE POWER SUPPLY
VARIATIONS
.
OUTPUT VOLTAGE CAN SWING TO
GROUND
.
VERY LARGE I
SET
RANGE
.
THREE INPUT OFFSET VOLTAGE
SELECTIONS
N
DIP8
(Plastic Package)
D
SO8
(Plastic Micropackage)
DESCRIPTION
The TS271 is a low cost, low power single opera-
tional amplifier designed to operate with single or
ORDER CODES
Part Number
Temperature
Range
Package
ND
TS271C/AC/BC
0
o
C, +70
o
C
l
l
TS271I/AI/BI
-40
o
C, +125
o
C
l
l
TS271M/AM/BM
-55
o
C, +125
o
C
l
l
Example :
TS271ACN
dual supplies. This operational amplifier uses the
SGS-THOMSON silicon gate CMOS process giv-
ing it an excellent consumption-speed ratio. This
amplifier is ideally suited for low consumption
applications.
PIN CONNECTIONS
(top view)
1
8
The power supply is externally programmable with
a resistor connectedbetween pins 8 and 4. It allows
to choose the best consumption-speed ratio and
supply current can be minimized according to the
required speed. This device is specified for the
following I
SET
current values : 1.5
m
A, 25
m
A, 130
m
A.
2
-
7
3
+
6
4
5
This CMOS amplifier offers very high input imped-
ance and extremely low input currents. The major
advantage versus JFET devices is the very low
input currents drift with temperature (see figure 3).
1 - Offset Null 1
2 - Inverting Input
3 - Non-inverting Input
4-V
5 - Offset Null 2
6 - Output
7-V
8-I
CC
-
CC
+
SET
October 1997
1/15
.
DYNAMIC CHARACTERISTICS
ADJUSTABLE BY I
SET
.
STABLE AND LOW OFFSET VOLTAGE
TS271C,I,M
BLOCK DIAGRAM
V
CC
Output
stage
Input
differential
Second
stage
Output
V
CC
Offs et null
E
E
Iset Input
Input
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
CC
+
Supply Voltage - (note 1)
18
V
V
id
Differential Input Voltage - (note 2)
18
V
V
i
Input Voltage - (note 3)
-0.3 to 18
V
I
O
Output Current for V
CC
+
.
15V
30
mA
I
in
Input Current
±
5
mA
T
oper
Operating Free-Air Temperature Range
o
C
TS271C/AC/BC
TS271I/AI/BI
TS271M/AM/BM
0to+70
-40 to +125
-55 to +125
T
stg
Storage Temperature Range
-65 to +150
o
C
Notes : 1. All voltage values, except differential voltage, are with respect to network ground terminal.
2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
3. The magnitude of the input and the output voltages must never exceed the magnitude of the positive supply voltage.
OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
CC
+
Supply Voltage
3 to 16
V
V
icm
Common Mode Input Voltage Range
0 to V
CC
+
- 1.5
V
2/15
±
±
V
CC
T27
T26
T10
T5
T6
T28
T15
T8
T1
T2
Input +
Input -
R1
T11
T12
Set Current
C1
C2
Output
T7
T3
T4
T16
T13
T9
T14
T29
Offset Null 1
Offset Null 2
V
CC
TS271C,I,M
OFFSET VOLTAGE NULL CIRCUIT
RESISTOR BIASING
V
CC
V
CC
5
1
8
V
O
V
O
V
CC
25k
W
R
set
R
set
R
set
V
CC
V
CC
OFFS ET COMPENSATION GUARANTEED FOR
TS271BCX (I
SET
>25
R
SET
CONNECTED TO
GROUND
R
SET
CONNECTED TO
V
CC
-
(R
SET
VALUE : SEE
Fig.1)
m
A),TS271ACX (I
SET
>90
m
A)
Figure 1 :
R
SET
Connected to V
CC
-
.
V
CC
V
CC
= +3V
= +5V
V
CC
V
CC
= +10V
= +16V
R
set
10M
W
1M
W
100k
W
10k
W
0. 1
m
A
1
m
A
10
A
100
m
A
I
set
4/15
m
TS271C,I,M
ELECTRICAL CHARACTERISTICS FOR I
SET
= 1.5
m
A
V
CC
+
= +10V, V
CC
-
= 0V, T
amb
=25
o
C (unless otherwise specified)
Symbol
Parameter
TS271C/AC/BC
TS271I/AI/BI
TS271M/AM/BM
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
V
io
Input Offset Voltage
V
O
= 1.4V, V
ic
= 0V TS271C/I/M
TS271AC/AI/AM
TS271BC/BI/BM
1.1
0.9
0.25
10
5
2
1.1
0.9
0.25
10
5
2
mV
T
min.
3
T
amb
3
T
max.
TS271C/I/M
TS271AC/AI/AM
TS271BC/BI/BM
12
6.5
3
12
6.5
3.5
DV
io
Input Offset Voltage Drift
0.7
0.7
m
V/
o
C
I
io
Input Offset Current - (note 1)
V
ic
=5V,V
o
=5V
T
min
.
pA
1
1
3
T
amb
3
T
max
.
100
200
I
ib
Input Bias Current - (note 1)
V
ic
=5V,V
o
=5V
T
min
.
pA
1
1
3
T
amb
3
T
max
.
150
300
V
OH
High Level Output Voltage
V
id
= 100mV, R
L
=1M
V
W
8.8
8.7
9
8.8
8.6
9
T
min
.
3
T
amb
3
T
max
.
V
OL
Low Level Output Voltage (V
id
= -100mV)
50
50
mV
A
vd
Large Signal Voltage Gain
V
o
=1Vto6V,R
L
=1M
V/mV
W
,V
ic
=5V
30
20
100
30
20
100
T
min
.
3
T
amb
3
T
max
.
GBP
Gain Bandwidth Product (A
v
= 40dB,
R
L
=1M
W
,C
L
= 100pF, f
in
= 10kHz)
0.1
0.1
MHz
CMR
Common Mode Rejection Ratio
V
o
= 1.4V, V
ic
= 1V to 7.4V
60
80
60
80
dB
SVR
Supply Voltage Rejection Ratio
V
CC
+
= 5V to 10V ,V
o
= 1.4V
60
80
60
80
dB
I
CC
Supply Current
A
v
= 1, no load, V
o
=5V
T
min
.
m
A
10
15
17
10
15
18
3
T
amb
3
T
max.
I
o
Output Short Circuit Current
V
id
= 100mV, V
o
=0V
60
60
mA
I
sink
Output Sink Current
V
id
= -100mV, V
o
=V
CC
45
45
mA
SR
Slew-Rate at Unity Gain
R
L
=1M
V/
m
s
,C
L
= 100pF, V
i
= 3 to 7V
0.04
0.04
j
m
Phase Margin at Unity Gain
A
v
= 40dB, R
L
=1M
Degrees
C
L
= 10pF
C
L
= 100pF
35
10
35
10
K
ov
Overshoot Factor
%
C
L
= 10pF
C
L
= 100pF
40
70
40
70
e
n
Equivalent Input Noise Voltage
f = 1kHz, R
S
= 100
nV
/```
W
68
68
Hz
Note :
1. Maximum values including unavoidable inaccuracies of the industrial test.
5/15
W
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