LT1812 View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LT1812

3mA, 100MHz, 750V/µs Operational Amplifier with Shutdown

Linear Technology 

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FEATURES

n 100MHz Gain Bandwidth

n 750V/μs Slew Rate

n 3.6mA Maximum Supply Current

n 50μA Supply Current in Shutdown

n 8nV/√Hz Input Noise Voltage

n Unity-Gain Stable

n 1.5mV Maximum Input Offset Voltage

n 4μA Maximum Input Bias Current

n 400nA Maximum Input Offset Current

n 40mA Minimum Output Current, VOUT = ± 3V

n ±3.5V Minimum Input CMR, VS = ±5V

n 30ns Settling Time to 0.1%, 5V Step

n Specified at ±5V, Single 5V Supplies

n Operating Temperature Range: –40°C to 85°C

n Low Profile (1mm) SOT-23 (ThinSOT™)

and S8 Packages

APPLICATIONS

n Wideband Amplifiers

n Buffers

n Active Filters

n Video and RF Amplification

n Cable Drivers

n Data Acquisition Systems

LT1812

3mA, 100MHz, 750V/µs

Operational Amplifier

with Shutdown

DESCRIPTION

The LT®1812 is a low power, high speed, very high slew

rate operational amplifier with excellent DC performance.

The LT1812 features reduced supply current, lower input

offset voltage, lower input bias current and higher DC gain

than other devices with comparable bandwidth. A power

saving shutdown feature reduces supply current to 50μA.

The circuit topology is a voltage feedback amplifier with the

slewing characteristics of a current feedback amplifier.

The output drives a 100Ω load to ± 3.5V with ±5V supplies.

On a single 5V supply, the output swings from 1.1V to

3.9V with a 100Ω load connected to 2.5V. The amplifier

is stable with a 1000pF capacitive load which makes it

useful in buffer and cable driver applications.

The LT1812 is manufactured on Linear Technology’s

advanced low voltage complementary bipolar process.

The dual version is the LT1813. For higher supply voltage

single, dual and quad operational amplifiers with up to

70MHz gain bandwidth, see the LT1351 through LT1365

data sheets.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. ThinSOT is a Trademark of Linear Technology Corporation. All other

trademarks are the property of their respective owners.

TYPICAL APPLICATION

4MHz, 4th Order Butterworth Filter

232Ω

274Ω

232Ω

VIN

665Ω

220pF

–

47pF

LT1812

+

274Ω 562Ω

470pF

–

22pF

LT1812

+

VOUT

1812 TA01

Filter Frequency Response

10

0

–10

–20

–30

–40

–50

–60

–70 VS = ±5V

–80 VIN = 600mVP-P

PEAKING < 0.12dB

–90

0.1

1

10

FREQUENCY (MHz)

100

1812 TA02

1812fb

1

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