Datasheet L2726 Datasheet (SGS Thomson Microelectronics)

L2726

October1998

LOWDROPDUALPOWER OPERATIONALAMPLIFIER



.OUTPUTCURRENT TO1 A

.OPERATES AT LOW VOLTAGES

.SINGLEOR SPLIT SUPPLY

.

LARGECOMMON-MODEAND
DIFFERENTIALMODE RANGE

.

LOWINPUTOFFSET VOLTAGE

.GROUNDCOMPATIBLEINPUTS

.

LOWSATURATIONVOLTAGE

.THERMAL SHUTDOWN

.CLAMPDIODE

DESCRIP TION

TheL2726is a monolithicintegratedcircuitinSO-20
packageintendedforuse aspoweroperationalam­plifiersina widerangeofapplicationsincludingservo
amplifiers andpowersupplies.

Itis particularlyindicatedfordrivinginductiveloads,
as motor and finds applications in compact-disc
VCRautomative,etc.

Thehighgainand highoutputpowercapabilitypro­videsuperiorperformancewhateveranoperational
amplifier/powerbooster combinationis required.

PIN C ONNE CTION (top view)

SO20

(12 + 4 + 4)

ORDERING NUMBER :L2726

This is advanced information on a new product now in development or undergoingevaluation. Details are subject to change without notice.

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BLOCK DIAGRAM

SCHEMATIC DI AG RAM (one section)

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

s

Supply Voltage 28 V

V

s

Peak Supply Voltage (50ms) 50 V

V

i

Input Voltage V

s

V

i

Differential Input Voltage ± V

s

I

O

DC Output Current 1 A

I

p

Peak Output Current (non repetitive) 1.5 A

P

tot

Power Dissipation at T

amb

=85oC

T

case

=75oC

1
5

W

T

op

Operating Temperature – 40 to 85

o

C

T

stg,Tj

Storage and Junction Temperature – 40 to 150

o

C

THERMAL DATA

R

th j-case

Thermal Resistance Junction-case Max. 15.0

o

C/W

R

th j-amb

Thermal Resistance Junction-ambient (*) Max. 65

o

C/W

(*) With 4 sq.cm copper area heatsink.

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ELECTRICAL CHARACTERISTICS

V

s

= 24V, T

amb

= 25oC unless otherwise specified

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

s

Single Supply Voltage 4 28 V

V

s

Split Supply Voltage ± 2 ± 14 V

I

s

Quiescent Drain Current

V

o

=

V

s

2

V

s

= 24V

10 15

mA

V

s

= 24V 9 15

I

b

Input Bias Current 0.2 1 µA

V

os

Input Offset Voltage 10 mV

I

os

Input Offset Current 100 nA

SR Slew Rate 2 V/µs

B Gain-bandwidth Product 1.2 MHz

R

i

Input Resistance 500 k

Ω

G

v

O. L. Voltage Gain f = 100Hz

f = 1kHz

70 80

60

dB

e

N

Input Noise Voltage

B = 22Hz to 22kHz

10 µV

I

N

Input Noise Voltage 200 pA

CMR Common Mode Rejection f = 1kHz 66 84 dB

SVR Supply Voltage Rejection f = 100Hz V

s

= 24V

R

G

= 10kΩ Vs= ±12V

V

R

= 0.5V Vs= ±6V

60

70
75
80

dB
dB
dB

V

DROP(HIGH)

Vs=±2.5V to±12V Ip= 100mA

I

p

= 500mA

0.7
1 1.5

V

V

DROP(LOW)

Vs=±2.5V to±12V Ip= 100mA

I

p

= 500mA

0.3

0.5 1

V

C

s

Channel Separation f = 1KHz Vs= 24V

R

L

=10

Ω

Vs=6V

G

v

= 30dB

60
60

dB

T

sd

Thermal Shutdown Junction
Temperature

150

o

C

Figure 1

: QuiescentCurrent vs. SupplyVoltage

Figure 2 :

OpenLoop Gainvs. Frequency

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Figure 3 : CommonModeRejectionFrequency Figure4 : OutputSwingvs. LoadCurrent

(V

s

= ± 5V)

Figure 5 : OutputSwingvs. Load Current

(V

s

= ± 12 V)

Figure6 : SupplyVoltage Rejectionvs.

Frequency

Figure 7 :

ChannelSeparationvs.Frequency.

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1

1120

A

e

B

D

E

L

K

H

A1

C

SO20MEC

h x 45

SO20

DIM.

mm inch

MIN. TYP. MAX. MIN. TYP. MAX.

A 2.35 2.65 0.093 0.104

A1 0.1 0.3 0.004 0.012

B 0.33 0.51 0.013 0.020

C 0.23 0.32 0.009

0.013

D 12.6 13 0.496 0.512

E 7.4 7.6 0.291 0.299

e 1.27 0.050

H 10 10.65 0.394 0.419

h 0.25 0.75 0.010 0.030

L 0.4 1.27 0.016 0.050

K0°(min.)8°(max.)

OUTLINE AND

MECHANICAL DATA

10

L2726

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license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this
publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMi­croelectronics products are not authorized for use as critical components in life support devices or systems without express written
approval of STMicroelectronics.

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