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PDF TS271 Data sheet ( Hoja de datos )
| Número de pieza | TS271 | |
| Descripción | CMOS PROGRAMMABLE LOW POWER SINGLE OPERATIONAL AMPLIFIER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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TS271
CMOS Programmable
Low Power Single Operational Amplifier
■ Offset null capability (by external
compensation)
■ Dynamic characteristics adjustable ISET
■ Consumption current and dynamic
parameters are stable regarding the
voltage power supply variations
■ Output voltage can swing to ground
■ Very large ISET range
■ Stable and low offset voltage
■ Three input offset voltage selections
Description
The TS271 is a low cost, low power single
operational amplifier designed to operate with
single or dual supplies. This operational amplifier
uses the ST silicon gate CMOS process giving it
an excellent consumption-speed ratio. This
amplifier is ideally suited for low consumption
applications.
The power supply is externally programmable with
a resistor connected between 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 ISET current values:
1.5µA, 25µA, 130µA.
This CMOS amplifier offers very high input
impedance and extremely low input currents. The
major advantage versus JFET devices is the very
low input currents drift with temperature see
Figure 8, Figure 19, Figure 30.
N
DIP8
(Plastic Package)
D
SO-8
(Plastic Micropackage)
Pin Connections (top view)
1
2-
3+
4
8
7
6
5
1 - Offset Null 1
2 - Inverting Input 1
3 - Non-inverting Input 1
4
-
V
-
CC
5 - Offset Null 2
6 - Output
7 - VCC+
8 - I Set
Order Codes
Part Number
TS271CN/ACN
TS271CD/CDT/ACD/ACDT
TS271IN/AIN/
TS271ID/IDT/AID/AIDT/BID/BIDT
TS271BMD
Temperature Range
0°C, +70°C
-40°C, +125°C
-55°C, +125°C
Package
DIP
SO
DIP
SO
SO
Packaging
Tube
Tube and Tape & Reel
Tube
Tube and Tape & Reel
Tube
March 2005
Revision 2
1/17
1 page  
Absolute Maximum Ratings
Figure 3. Offset voltage null circuit
-
1
+8
5
25kΩ
R set
VCC-
OFFSET COMPENSATION GUARANTEED FOR
TS271BCX (ISET > 25µA), TS271ACX (ISET > 90µA)
Figure 4. Offset voltage null circuit
-
1
+8
5
25kΩ
R set
VCC-
OFFSET COMPENSATION GUARANTEED FOR
TS271BCX (ISET > 25µA), TS271ACX (ISET > 90µA)
Figure 5. Resistor biasing
TS271
VCC+
VCC+
-
VO
+
R set
-
VO
+
R set
VCC-
Rset CONNECTED TO GROUND
VCC-
Rset CONNECTED TO VCC- (Rset VALUE : SEE Fig. 1)
Figure 6. Rset connected to Vcc-
VCC = +3V
VCC = +5V
VCC = +16V
VCC = +10V
Rset
10MΩ
1MΩ
100kΩ
10kΩ
0.1µA
1µA
10µA
100µA
Iset
5/17
5 Page 
Electrical Characteristics
TS271
Figure 24. Open loop frequency response and
phase shift
50
40
G AIN
30
PHASE
Phase
20 Tam b = 25°C
Margin
10
V C C+ = 1 0 V
R L = 100kΩ
0
C L = 100pF
A VCL = 100
Gain
Bandwidth
-1 0 Product
2
10
3
10
4
10
56
10 10
FREQ UENCY, f (Hz)
0
45
90
135
180
7
10
Figure 25. Gain bandwidth product versus
supply voltage
0.9
Ta m b = 2 5 °C
0.8 RL = 100kΩ
CL = 100pF
0.7 AV = 1
0.6
0.5
0.4
0
4 8 12 16
SUPPLY VO LTAG E, VCC (V)
Figure 26. Phase margin versus supply
voltage
50
40
30
20 Ta m b = 2 5 °C
RL = 100kΩ
10 CL = 1 0 0 p F
AV = 1
0 4 8 12 16
SUPPLY VO LTAG E, V CC (V)
Figure 27. Phase margin versus capacitive
load
50
Ta m b = 2 5 °C
40
RL = 100kΩ
AV = 1
VCC = 10V
30
20
0 20 40 60 80 100
C APAC ITAN C E, C L (pF)
Figure 28. Slew rate versus supply voltage
1.0
SR
0.8
0.6
SR
0.4
0.2
0
4
Ta m b = 2 5 °C
RL = 100kΩ
CL = 100pF
6 8 10 12 14
S U P P L Y V O L T A G E , VC C (V )
16
11/17
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet TS271.PDF ] | |
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