ST TS272C User Manual

TS272C,I,M

HIGH PERFORMANCE CMOS DUAL OPERATIONAL AMPLIFIERS

OUTPUT VOLTAGE CAN SWING TO GROUND

EXCELLENT PHASE MARGIN ON CAPACITIVE LOADS

GAIN BANDWIDTH PRODUCT: 3.5MHz

STABLE AND LOW OFFSET VOLTAGE

THREE INPUT OFFSET VOLTAGE SELECTIONS

DESCRIPTION

The TS272 devices are low cost, dual operational amplifiers designed to operate with single or dual supplies. These operational amplifiers use the ST silicon gate CMOS process allowing an excellent consumption-speed ratio. These series are ideally suited for low consumption applications.

Three power consumptions are available allowing to have always the best consumption-speed ratio:

ICC = 10µA/amp.: TS27L2 (very low power)

ICC = 150µA/amp.: TS27M2 (low power)

ICC = 1mA/amp.: TS272 (standard)

These CMOS amplifiers offer 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 2).

ORDER CODE

Part Number

Temperature Range

 

Package

 

 

 

 

 

N

D

P

 

 

 

 

 

 

 

 

TS272C/AC/BC

0°C, +70°C

TS272I/AI/BI

-40°C, +125°C

 

 

 

 

 

TS272M/AM/BM

-55°C, +125°C

 

 

 

 

 

 

Example : TS272ACN

N = Dual in Line Package (DIP)

D = Small Outline Package (SO) - also available in Tape & Reel (DT) P = Thin Shrink Small Outline Package (TSSOP) - only available

in Tape & Reel (PT)

N

DIP8

(Plastic Package)

D

SO8

(Plastic Micropackage)

P

TSSOP8

(Thin Shrink Small Outline Package)

PIN CONNECTIONS (top view)

1

 

 

8

2

-

 

7

3

+

-

6

4

 

+

5

1 - Output 1

2 - Inverting Input 1

3 - Non-inverting Input 1

4 - V CC -

5 - Non-inverting Input 2

6 - Inverting Input 2

7 - Output 2

8 - V CC +

November 2001

1/9

TS272C,I,M

BLOCK DIAGRAM

 

 

 

 

 

VCC

Current

x I

 

 

Output

 

source

Input

Second

 

 

 

 

 

differential

stage

stage

Output

 

 

 

 

 

VCC

 

 

E

E

 

 

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

TS272C/AC/BC

TS272I/AI/BI

TS272M/AM/BM

Unit

 

 

 

 

 

 

 

VCC+

Supply Voltage 1)

 

 

18

 

V

Vid

Differential Input Voltage 2)

 

±18

 

V

Vi

Input Voltage 3)

 

 

-0.3 to 18

 

V

Io

Output Current for V

+ ³ 15V

 

±30

 

mA

 

 

CC

 

 

 

 

Iin

Input Current

 

 

±5

 

mA

Toper

Operating Free-Air Temperature Range

0 to +70

-40 to +125

-55 to +125

°C

Tstg

Storage Temperature Range

 

-65 to +150

 

°C

1.All 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

 

 

 

 

 

+

Supply Voltage

3 to 16

V

VCC

Vicm

Common Mode Input Voltage Range

0 to V

+ - 1.5

V

 

 

 

CC

 

2/9

ST TS272C User Manual

 

 

 

 

 

 

 

 

SCHEMATIC

 

 

 

VCC

 

 

 

 

(for DIAGRAM

T24

T25

T27

T5

 

 

T10

 

T26

 

T6

 

 

1/2

 

 

 

 

 

 

 

 

 

 

 

 

T8

 

 

T15

TS272)

 

 

 

 

 

 

 

 

R2

T28

 

 

 

 

 

 

 

 

T1

T2

T11

 

T12

 

 

 

 

Input

Input

 

 

 

 

T17

T18

 

 

R1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1

 

 

 

 

 

 

 

 

T7

 

 

Output

 

 

 

 

 

 

 

 

 

T19

 

T23

T3

T4

 

 

 

 

 

 

 

 

 

 

T16

 

 

 

 

 

 

 

 

 

T20

T21

T22

 

T9

T13

 

T14

 

 

T29

 

 

 

 

 

 

 

 

VCC

 

 

 

 

 

 

3/9

 

 

 

 

 

 

 

TS272C,I,M

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