LT1809/LT1810
Single/Dual 180MHz, 350V/µs
Rail-to-Rail Input and Output
Low Distortion Op Amps
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FEATURES
DESCRIPTIO
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–3dB Bandwidth: 320MHz, AV = 1
The LT®1809/LT1810 are single/dual low distortion rail-
to-rail input and output op amps with a 350V/µs slew rate.
These amplifiers have a –3dB bandwidth of 320MHz at
unity-gain,again-bandwidthproductof180MHz(AV ≥10)
andan85mAoutputcurrenttofittheneedsoflowvoltage,
high performance signal conditioning systems.
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Gain-Bandwidth Product: 180MHz, AV ≥ 10
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Slew Rate: 350V/µs
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Wide Supply Range: 2.5V to 12.6V
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Large Output Current: 85mA
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Low Distortion, 5MHz: –90dBc
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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
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
Shutdown Pin: LT1809
Single in 8-Pin SO and 6-Pin SOT-23 Packages
Dual in 8-Pin SO and MSOP Packages
Operating Temperature Range: –40°C to 85°C
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The LT1809/LT1810 maintain their performance for sup-
plies from 2.5V to 12.6V and are specified at 3V, 5V and
±5V supplies. The inputs can be driven beyond the sup-
plies without damage or phase reversal of the output.
APPLICATIO S
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Driving A/D Converters
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
is available in 8-pin SO and MSOP packages. These
devices can be used as a plug-in replacement for many op
amps to improve input/output range and performance.
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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
, LTC and LT are registered trademarks of Linear Technology Corporation.
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Distortion vs Frequency
TYPICAL APPLICATIO
–40
A
V
V
= +1
= 2V
V
IN
S
P-P
–50
–60
High Speed ADC Driver
= ±5V
5V
5V
–70
R
L
= 100Ω, 2ND
V
IN
R3
49.9Ω
+
–
LTC®1420
PGA GAIN = 1
REF = 2.048V
–80
1V
P-P
12 BITS
10Msps
•
•
•
LT1809
–5V
+A
IN
–90
C1
470pF
–A
IN
R
L
= 100Ω, 3RD
R
L
= 1k, 3RD
–100
R2
1k
1809 TA01
R
= 1k, 2ND
L
–5V
–110
R1
1k
0.3
1
10
30
FREQUENCY (MHz)
1809 TA02
1