1

LT1812

3mA, 100MHz, 750V/

µs

Operational Amplifier

with Shutdown

s

Wideband Amplifiers

s

Buffers

s

Active Filters

s

Video and RF Amplification

s

Cable Drivers

s

Data Acquisition Systems

The LT

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 50

µA.

The circuit topology is a voltage feedback amplifier with

the slewing characteristics of a current feedback amplifier.

The output drives a 100

Ωloadto±3.5Vwith±5Vsupplies.

On a single 5V supply, the output swings from 1.1V to 3.9V

with a 100

Ωloadconnectedto2.5V.Theamplifierisstable

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.

4MHz, 4th Order Butterworth Filter

Filter Frequency Response

FREQUENCY (MHz)

0.1

–50

–40

–30

–20

–10

1

10

100

1812 TA02

–60

–70

–80

–90

0

10

PEAKING < 0.12dB

LT1812

220pF

665

Ω

232

Ω

47pF

232

Ω

LT1812

470pF

1812 TA01

562

Ω

274

Ω

22pF

274

Ω

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

FEATURES

APPLICATIO S

TYPICAL APPLICATIO

DESCRIPTIO

s

100MHz Gain Bandwidth

s

750V/

µs Slew Rate

s

3.6mA Maximum Supply Current

s

Available in SOT-23 and S8 Packages

s

50

s

8nV/

√Hz Input Noise Voltage

s

Unity-Gain Stable

s

1.5mV Maximum Input Offset Voltage

s

4

µA Maximum Input Bias Current

s

400nA Maximum Input Offset Current

s

s

s

30ns Settling Time to 0.1%, 5V Step

s

Specified at

±5V, Single 5V Supplies

s

Operating Temperature Range: – 40

°C to 85°C