1

LT1178S8

20

µA Max, Dual

SO-8 Package, Single Supply

Precision Op Amp

DESCRIPTIO

S

FEATURE

The LT1178S8 is a micropower dual op amp in the surface

mount 8-pin package. It is optimized for single supply

operation at 5V. Specifications are also provided at

±15V

supplies.

The extremely low supply current is combined with true

precision specifications: offset voltage is 60

µV, offset

current is 50pA. Both offset parameters have low drift with

offset current permit the use of megohm level source

resistors without introducing serious errors. Voltage noise

at 0.9

current.

The LT1178S8 can be operated from a single supply as low

as one lithium cell or two Ni-Cad batteries. The input range

goes below ground. The all-NPN output stage swings to

within a few millivolts of ground while sinking current ––

no power consuming pull-down resistors are needed.

For applications where three times higher supply current

is acceptable, the micropower LT1077 single, LT1078

dual and LT1079 quad are recommended. The LT1077/

LT1078/LT1079 have significantly higher bandwidth, slew

rate; lower voltage noise and better output drive capability.

s

8-Pin SO Package

s

20

µA Max Supply Current per Amplifier

s

180

µV Max Offset Voltage

s

350pA Max Offset Current

s

0.9

s

s

0.6

µV/°C Offset Voltage Drift

s

Single Supply Operation:

– Input Voltage Range Includes Ground

– Output Swings to Ground While Sinking Current

– No Pull-Down Resistors Are Needed

s

Output Sources and Sinks 5mA Load Current

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

PART MARKING

TOP VIEW

S8 PACKAGE

8-LEAD PLASTIC SOIC

1

2

3

4

8

7

6

5

+IN A

+IN B

–IN B

–IN A

OUT A

OUT B

LT1178S8

PACKAGE/ORDER I FOR ATIO

Please note that the LT1178S8 surface mount pinout differs from that of

the LT1178 standard plastic or ceramic dual-in-line packages.

Consult factory for Industrial and Military grade parts.

1178

ORDER PART

NUMBER

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Offset Voltage

60

180

µV

0

85

350

µV

120

350

µV

0

150

540

µV

Input Offset Voltage Drift (Note 1)

0

0.6

3.5

µV/°C

0

0.7

3.8

µV/°C

For electrical specifications not listed below, refer to the standard LT1178C data sheet with the changes noted on this page.

Note 1: Not 100% production tested.

ELECTRICAL C

C

HARA TERISTICS