LT1884/LT1885

1

The LT

performance to amplifiers with rail-to-rail output swing

while providing faster response than other precision am-

plifiers. Input offset voltage is trimmed to less than 50

µV

and the low drift maintains this accuracy over the operat-

ing temperature range. Input bias currents are an ultralow

400pA maximum.

The amplifiers work on any total power supply voltage

between 2.7V and 36V (fully specified from 5V to

±15V).

Output voltage swings to within 40mV of the negative

supply and 220mV of the positive supply make these

amplifiers good choices for low voltage single supply

operation.

Slew rates of 1V/

µs with a supply current of less than 1mA

per amplifier give superior response and settling time

performance in a low power precision amplifier.

The dual LT1884 is available with standard pinouts in

8-pin SO and PDIP packages. The quad LT1885 is also in

the standard pinout 14-pin SO package.

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Thermocouple Amplifiers

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Bridge Transducer Conditioners

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Instrumentation Amplifiers

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Battery-Powered Systems

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Photo Current Amplifiers

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Precision Integrators

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Precision Current Sources

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

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Offset Voltage: 50

µV Max (LT1884A)

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Input Bias Current: 400pA Max (LT1884A)

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Offset Voltage Drift: 0.8

µV/°C Max

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Rail-to-Rail Output Swing

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Operates with Single or Split Supplies

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Open-Loop Voltage Gain: 1 Million Min

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1mA Maximum Supply Current Per Amplifier

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Slew Rate: 1V/

µs

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Standard Pinouts

Dual/Quad Rail-to-Rail

Output, Picoamp Input

Precision Op Amps

Input Fault Protected Instrumentation Amplifier

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

–

+

+

–

–

+

+

–

1884 TA01

22pF

TRIM FOR

AC CMRR

10k

1/4 LT1885

OUT

–IN

GUARD

+IN

1/4 LT1885

1/4 LT1885

1/4 LT1885

10k

1M

1M

3

5

10k

10k

9.76k

500

Ω

TRIM FIRST

FOR DC CMRR

10k

GAIN =

2•10k

10pF