SGS Thomson Microelectronics TS271M, TS271ID, TS271IN, TS271I, TS271CN Datasheet

...
TS271C,I,M
PROGRAMMABLE CMOS
SINGLE OPERATIONAL AMPLIFIERS
October 1997
.
OFFSET NULL CAPABILITY (by external compensation)
.
SET
.
CONSUMPTION CURRENT AND DYNAMIC PARAMETERS ARE STABLE REGARDING THE VOLTAGEPOWER SUPPLY VARIATIONS
.
OUTPUT VOLTAGE CAN SWING TO GROUND
.
VERYLARGE I
SET
RANGE
.
STABLEAND LOW OFFSETVOLTAGE
.
THREE INPUT OFFSETVOLTAGE SELECTIONS
DESCRIPTION
The TS271is a low cost, lowpowersingle opera­tional amplifierdesigned to operate with single or
1
2
3
45
6
7
8
CC
+
-
-
+
1 - Offset Null 1 2 - InvertingInput 3 - Non-invertingInput 4-V 5 - Offset Null 2 6 - Output 7-V 8-I
CC
SET
PIN CONNECTIONS (top view)
ORDER CODES
Part Number
Temperature
Range
Package
ND
TS271C/AC/BC 0
o
C, +70oC ●● TS271I/AI/BI -40oC, +125oC ●● TS271M/AM/BM -55oC, +125oC ●●
Example : TS271ACN
N
DIP8
(Plastic Package)
D
SO8
(Plastic Micropackage)
dual supplies. This operational amplifier uses the SGS-THOMSONsilicon gate CMOS process giv­ing it an excellent consumption-speedratio. This amplifier is ideallysuited for low consumption applications.
The powersupply is externallyprogrammablewith a resistorconnectedbetweenpins8and4.Itallows to choose the best consumption-speedratio and supply current can be minimizedaccording to the required speed. This device is specified for the followingI
SET
currentvalues: 1.5µA, 25µA,130µA.
This CMOS amplifieroffers very high input imped­ance and extremelylow input currents.The major advantage versus JFET devices is the very low input currents drift withtemperature(see figure 3).
1/15
MAXIMUMRATINGS
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 ±5mA
T
oper
Operating Free-Air TemperatureRange
TS271C/AC/BC TS271I/AI/BI TS271M/AM/BM
0to+70
-40 to +125
-55 to +125
o
C
T
stg
Storage TemperatureRange -65 to +150
o
C
Notes : 1. All voltage values, except differential voltage, are with respect to network ground terminal.
2. Differential voltages are thenon-inverting input terminal with respect to the invertinginput terminal.
3. The magnitude of the input and the output voltages must never exceed the magnitude of the positive supply voltage.
Iset Input Input
Offset null
E E
Input
differential
Second
stage
Output
stage
Output
CC
V
CC
V
BLOCK DIAGRAM
OPERATINGCONDITIONS
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
TS271C,I,M
2/15
T26
T27
V
CC
V
CC
T28
Input -
T1
T2 Input +
Set Current
T29
T3 T4
C1
R1
T7
T6T5
T8
T11
T12
T10
T13
T9
T14
T16
Output
C2
T15
Offset Null 1
Offset Null 2
SCHEMATIC DIAGRAM
TS271C,I,M
3/15
25k
V
CC
5
1
8
R
set
OFFSETCOMPENSATION GUARANTEED FOR TS271BCX (I
SET
>25µA),TS271ACX (I
SET
>90µA)
OFFSET VOLTAGENULL CIRCUIT
= +3V = +5V
V
CC
V
CC
= +10V = +16V
V
CC
V
CC
R
set
10k
100k
1M
10M
1
µA 10µA 100µA
I
set
0.1µA
Figure 1 : R
SET
Connectedto V
CC
-
.
V
CC
R
set
V
O
V
CC
V
CC
R
set
V
O
V
CC
R
SET
CONNECTED TO
GROUND
R
SET
CONNECTED TO
V
CC
-
(R
SET
VALUE : SEE
Fig.1)
RESISTOR BIASING
TS271C,I,M
4/15
ELECTRICAL CHARACTERISTICS FOR I
SET
= 1.5µA
V
CC
+
= +10V,V
CC
-
=0V, T
amb
=25oC (unless otherwisespecified)
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,Vic= 0V TS271C/I/M
TS271AC/AI/AM TS271BC/BI/BM
T
min.
T
amb
T
max.
TS271C/I/M TS271AC/AI/AM TS271BC/BI/BM
1.1
0.9
0.25
10
5 2
12
6.5 3
1.1
0.9
0.25
10
5 2
12
6.5
3.5
mV
DV
io
Input Offset VoltageDrift 0.7 0.7 µV/oC
I
io
Input Offset Current - (note 1)
V
ic
=5V,Vo=5V
T
min
. T
amb
T
max
.
1
100
1
200
pA
I
ib
Input Bias Current - (note 1)
V
ic
=5V,Vo=5V
T
min
. T
amb
T
max
.
1
150
1
300
pA
V
OH
High Level Output Voltage
V
id
= 100mV,RL=1M
T
min
. T
amb
T
max
.
8.8
8.7
9 8.8
8.6
9
V
V
OL
Low Level Output Voltage (Vid= -100mV) 50 50 mV
A
vd
Large Signal VoltageGain
V
o
=1Vto6V,RL=1MΩ,Vic=5V
T
min
. T
amb
T
max
.
30 20
100 30
20
100
V/mV
GBP Gain Bandwidth Product (A
v
= 40dB,
R
L
=1MΩ,CL= 100pF,fin= 10kHz) 0.1 0.1
MHz
CMR Common Mode Rejection Ratio
V
o
= 1.4V,Vic= 1V to 7.4V 60 80 60 80
dB
SVR Supply Voltage Rejection Ratio
V
CC
+
= 5V to 10V ,Vo= 1.4V 60 80 60 80
dB
I
CC
Supply Current
A
v
= 1, no load, Vo=5V
T
min
. T
amb
T
max.
10 15
17
10 15
18
µA
I
o
Output Short Circuit Current
V
id
= 100mV, Vo=0V 60 60
mA
I
sink
Output Sink Current
V
id
= -100mV, Vo=V
CC
45 45
mA
SR Slew-Rate at Unity Gain
R
L
=1MΩ,CL= 100pF, Vi= 3 to7V 0.04 0.04
V/µs
m Phase Margin at Unity Gain
A
v
= 40dB, RL=1M
C
L
= 10pF
C
L
= 100pF
35 10
35 10
Degrees
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 68 68
nV
Hz
Note : 1. Maximum values including unavoidable inaccuracies of theindustrial test.
TS271C,I,M
5/15
Loading...
+ 10 hidden pages