LT1809/LT1810
Single/Dual 180MHz, 350V/µs
Rail-to-Rail Input and Output
Low Distortion Op Amps
DESCRIPTION
FEATURES
TheLT®1809/LT1810aresingle/duallowdistortionrail-to-
rail input and output op amps with a 350V/μs slew rate.
These amplifiers have a –3dB bandwidth of 320MHz at
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–3dB Bandwidth: 320MHz, A = 1
V
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Gain-Bandwidth Product: 180MHz, A ≥ 10
V
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Slew Rate: 350V/μs
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Wide Supply Range: 2.5V to 12.6V
unity-gain,again-bandwidthproductof180MHz(A ≥10)
V
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Large Output Current: 85mA
andan85mAoutputcurrenttofittheneedsoflowvoltage,
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Low Distortion, 5MHz: –90dBc
high performance signal conditioning systems.
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Input Common Mode Range Includes Both Rails
The LT1809/LT1810 have an input range that includes
both supply rails and an output that swings within 20mV
of either supply rail to maximize the signal dynamic range
in low supply applications.
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Output Swings Rail-to-Rail
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Input Offset Voltage, Rail-to-Rail: 2.5mV Max
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Common Mode Rejection: 89dB Typ
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Power Supply Rejection: 87dB Typ
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The LT1809/LT1810 have very low distortion (–90dBc) up
to 5MHz that allows them to be used in high performance
data acquisition systems.
Open-Loop Gain: 100V/mV Typ
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Shutdown Pin: LT1809
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Single in 8-Pin SO and 6-Pin SOT-23 Packages
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Dual in 8-Pin SO and MSOP Packages
TheLT1809/LT1810maintaintheirperformanceforsupplies
from 2.5V to 12.6V and are specified at 3V, 5V and 5V
supplies. The inputs can be driven beyond the supplies
without damage or phase reversal of the output.
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Operating Temperature Range: –40°C to 85°C
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Low Profile (1mm) SOT-23 (ThinSOT™) Package
APPLICATIONS
The LT1809 is available in the 8-pin SO package with the
standard op amp pinout and the 6-pin SOT-23 package.
The LT1810 features the standard dual op amp pinout and
isavailablein8-pinSOandMSOPpackages.Thesedevices
can be used as a plug-in replacement for many op amps
to improve input/output range and performance.
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Driving A/D Converters
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Low Voltage Signal Processing
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Active Filters
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Rail-to-Rail Buffer Amplifiers
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Video Line Driver
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
Distortion vs Frequency
–40
A
V
V
= +1
= 2V
High Speed ADC Driver
V
IN
S
P-P
–50
–60
5V
=
5V
5V
V
P-P
IN
R3
49.9Ω
+
–
LTC®1420
PGA GAIN = 1
REF = 2.048V
1V
–70
12 BITS
10Msps
R
L
= 100Ω, 2ND
•
•
•
LT1809
–5V
+A
IN
C1
470pF
–80
–A
IN
R2
1k
–90
1809 TA01a
R
L
= 100Ω, 3RD
R
= 1k, 3RD
L
–5V
–100
R1
1k
R
L
= 1k, 2ND
–110
0.3
1
10
30
FREQUENCY (MHz)
1809 TA01b
180910fa
1