1

LT1784

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

s

s

Rail-to-Rail Input and Output

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Low Profile (1mm) ThinSOT

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Gain Bandwidth Product: 2.5MHz

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Slew Rate: 2.1V/

µs

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Low Input Offset Voltage: 3.5mV Max

s

High Voltage Gain: 1000V/mV

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Single Supply Input Range: 0V to 18V

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Specified on 3V, 5V and

±5V Supplies

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Reverse Battery Protection to 18V

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Low Power: 750

µA Supply Current Max

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Output Shutdown on 6-Lead Version

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High Output Current: 15mA Min

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Operating Temperature Range: – 40

°C to 85°C

The LT

SOT-23 package that operates on all single and split

supplies with a total voltage of 2.5V to 18V. The amplifier

draws less than 750

µA of quiescent current and has

reverse battery protection, drawing negligible current for

reverse supply voltages up to 18V.

The input range of the LT1784 includes ground, and a

unique feature of this device is its Over-The-Top

tion capabilitity with either or both of its inputs above the

positive rail. The inputs handle 18V both differential and

common mode, independent of supply voltage. The input

stage incorporates phase reversal protection to prevent

false outputs from occurring even when the inputs are 9V

below the negative supply.

The LT1784 can drive loads up to 15mA and still maintain

rail-to-rail capability. A shutdown feature on the 6-lead

version can disable the part, making the output high

impedance and reducing quiescent current to 5

µA. The

LT1784 op amp is available in the 5- and 6-lead

SOT-23 packages. For applications requiring lower power,

refer to the LT1782 and LT1783 data sheets.

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Portable Instrumentation

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Battery-Powered Systems

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Sensor Conditioning

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Supply Current Sensing

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MUX Amplifiers

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4mA to 20mA Transmitters

2.5MHz, Over-The-Top

Low Power, Rail-to-Rail Input

and Output Op Amp in SOT-23

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

Over-The-Top and ThinSOT are trademarks of Linear Technology Corporation.

–

+

LT1782

SHDN

IN

OUT

1784 TA01

R2

9.09k

R1

10k

R3

1k

–

+

LT1784

SHDN

()

R1 + R2

R3

()

OR

1+

R1

R2 + R3

FREQUENCY (Hz)

30

25

20

15

10

5

0

–5

–10

–15

–20

1k

100k

1M

10M

1784 TA01a

10k

Programmable Gain Amplifier

Frequency Response