1

LT1077

1077fa

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60µA Max Supply Current

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40µV Max Offset Voltage

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350pA Max Offset Current

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■

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O.4µV/°C Offset Voltage Drift

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250kHz Gain-Bandwidth Product

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0.12V/µs Slew Rate

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Single Supply Operation

Input Voltage Range Includes Ground

Output Swings to Ground while Sinking Current

No Pull-Down Resistors are Needed

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Output Sources and Sinks 5mA Load Current

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Replaces OP-07, OP-77, AD707, LT1001, LT1O12

at 10 to 60 Times Lower Power

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Battery or Solar Powered Systems

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4mA to 2OmA Current Loops

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Two Terminal Current Source

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Megaohm Source Resistance Difference Amplifier

Micropower, Single Supply,

Precision Op Amp

Self Buffered Micropower Reference

Distribution of Input Offset Voltage

, LTC and LT are registered trademarks of Linear Technology Corporation.

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

750k

3.6V TO 9V

3

2

0.1µF

LT1034

1.2V

OUTPUT

1.230V

±1.2% MAX

SUPPLY CURRENT = 60µA MAX

SOURCES UP TO 10mA

LOAD REGULATION = 30µV/mA

TEMPERATURE DRIFT = 12ppm/°C

7

4

6

+

–

LT1077

LT1077 • TA01

INPUT OFFSET VOLTAGE (µV)

–40

20

25

30

20

LT1077 • TA02

15

10

–20

–30

–10

0

40

10

30

5

0

35

1072 UNITS

TESTED IN

H, J8, N8

PACKAGES

The LT

amplifier optimized for single supply operation at 5V. In

addition, ±15V specifications are provided.

Micropower performance of competing devices is

achieved at the expense of seriously degrading precision,

noise, speed, and output drive specifications. The LT1077

reduces supply current without sacrificing other

parameters. The offset voltage achieved is the lowest

of any micropower op amp. Offset current, voltage

and current noise, slew rate and gain-bandwidth product

are all two to ten times better than on previous micropower

op amps.

The 1/f corner of the voltage noise spectrum is at 0.7Hz.

This results in low frequency (0.1Hz to 10Hz) noise

performance which can only be found on devices with an

order of magnitude higher supply current.

The LT1077 is completely plug-in compatible (including

nulling) with all industry standard precision op amps.

Thus, it can replace these precision op amps in many

applications without sacrificing performance, yet with

significant power savings.

The LT1077 can be operated from one lithium cell or two

Ni-Cad batteries. The input range goes below ground. The

all-NPN output stage swings to ground while sinking

current—no pull-down resistors are needed.

For dual and quad op amps with similar specifications

please see the LT1078/LT1079 datasheet.