ST MC33172, MC35172 User Manual

Low power dual bipolar operational amplifiers

1

2

3

45

6

7

8

-

+

-

+

Ouptut

Inverting Input 2

Non-inverting Input 2

Inverting Input 1

Output 1

Non-inverting Input 1

V

CC

V

CC

Features

■ Good consumption/speed ratio: only 200 µA for

2.1MHz, 2V/µs

■ Single (or dual) supply operation from +4 V to

+44V (±2V to ±22V)

■ Wide input common mode mode voltage range

including V

■ Low level output voltage close to V

100 mV typical

■ Pin-to-pin compatible with standard dual

operational amplifiers

Description

CC

-

- :

CC

MC33172 MC35172

N

DIP8

(Plastic package)

The MC3x172 series are dual bipolar operational
amplifiers offering both low consumption
(200 µA/Amp) and good speed (2.1 MHz, 2 V/µs).

Moreover, the input common mode range extends
down to the lower supply rail, allowing single
supply operation from +4 V to +44 V.

D

SO-8

(Plastic micropackage)

Pin connections

(top view)

July 2008 Rev 2 1/9

www.st.com

9

Circuit schematics MC33172 MC35172

V +

CC

T1

T7

R4

T8

T9

R3

T6

T2

T5

T3

R1

T4

R2

T13

T14

T19

R5

R7

R8

T10

T11

R6

T15

T16

R9

T20

R10

T17

Input +

T12

T13

T24

C

T21

T22

R11

T23

T27

T29

R12

R15

T30

T31

T28

R14

Output

R13

V -

CC

Input -

T25

T26

1 Circuit schematics

Figure 1. Typical schematic diagram (1/2 MC33172/MC35172)

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MC33172 MC35172 Absolute maximum ratings and operating conditions

2 Absolute maximum ratings and operating conditions

Table 1. Absolute maximum ratings (AMR)

Symbol Parameter Value Unit

V

V

V

Supply voltage ±22 V

CC

Differential input voltage see note

id

Input voltage see note 1 V

in

(1)

Output short-circuit duration Indefinite s

Operating free-air temperature range

T

oper

R

thja

R

thjc

T

T

stg

ESD

j

MC33172
MC35172

Thermal resistance junction to ambient

SO-8
DIP8

Thermal resistance junction to case

(2)

SO-8
DIP8

(2)

-40 to 105

-55 to 125

125

85

40
41

°C/W

°C/W

Junction temperature 150 °C

Storage temperature -65 to 150 °C

(4)

(3)

(5)

2kV

200 V

1kV

HBM: human body model

MM: machine model

CDM: charged device model

Latch-up immunity Class A

1. Either or both input voltages must not exceed the magnitude of VCC.

2. Short-circuits can cause excessive heating and destructive dissipation. Values are typical.

3. 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.

4. 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.

5. 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.

Table 2. Operating conditions

V

°C

Symbol Parameter Value Unit

V

Supply voltage ±2 to ±22 V

CC

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