LT1812
3mA, 100MHz, 750V/µs
Operational Amplifier
with Shutdown
FEATURES
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.
Thecircuittopologyisavoltagefeedbackamplifierwiththe
slewing characteristics of a current feedback amplifier.
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100MHz Gain Bandwidth
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750V/μs Slew Rate
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3.6mA Maximum Supply Current
50μA Supply Current in Shutdown
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8nV/√Hz Input Noise Voltage
Unity-Gain Stable
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1.5mV Maximum Input Offset Voltage
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4μA Maximum Input Bias Current
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400nA Maximum Input Offset Current
Theoutputdrivesa100Ωloadto 3.5Vwith 5Vsupplies.
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.
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40mA Minimum Output Current, V
= 3V
OUT
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3.5V Minimum Input CMꢀ, V = 5V
S
30ns Settling Time to 0.1%, 5V Step
Specified at 5V, Single 5V Supplies
Operating Temperature ꢀange: –40°C to 85°C
™
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.
Low Profile (1mm) SOT-23 (ThinSOT )
and S8 Packages
APPLICATIONS
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Wideband Amplifiers
Buffers
Active Filters
Video and ꢀF Amplification
Cable Drivers
Data Acquisition Systems
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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.
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Filter Frequency Response
TYPICAL APPLICATION
10
0
4MHz, 4th Order Butterworth Filter
232Ω
–10
–20
274Ω
–30
–40
47pF
232Ω
665Ω
220pF
–
+
V
IN
22pF
274Ω
562Ω
470pF
–
+
–50
–60
LT1812
LT1812
V
OUT
–70
V
V
=
IN
5V
S
= 600mV
P-P
–80
1812 TA01
PEAKING < 0.12dB
–90
0.1
1
10
100
FꢀEQUENCY (MHz)
1812 TA02
1812fb
1