LT1809_15 Datasheet, PDF (1/24 Pages) Linear Technology – Single/Dual 180MHz, 350V/s Rail-to-Rail Input and Output Low Distortion Op Amps

FEATURES
n _{–3dB Bandwidth: 320MHz, AV = 1}
n _{Gain-Bandwidth Product: 180MHz, AV ≥ 10}
n _{Slew Rate: 350V/μs}
n _{Wide Supply Range: 2.5V to 12.6V}
n _{Large Output Current: 85mA}
n _{Low Distortion, 5MHz: – 90dBc}
n _{Input Common Mode Range Includes Both Rails}
n _{Output Swings Rail-to-Rail}
n _{Input Offset Voltage, Rail-to-Rail: 2.5mV Max}
n _{Common Mode Rejection: 89dB Typ}
n _{Power Supply Rejection: 87dB Typ}
n _{Open-Loop Gain: 100V/mV Typ}
n _{Shutdown Pin: LT1809}
n _{Single in 8-Pin SO and 6-Pin SOT-23 Packages}
n _{Dual in 8-Pin SO and MSOP Packages}
n _{Operating Temperature Range: –40°C to 85°C}
n _{Low Profile (1mm) SOT-23 (ThinSOT™) Package}
APPLICATIONS
n _{Driving A/D Converters}
n _{Low Voltage Signal Processing}
n _{Active Filters}
n _{Rail-to-Rail Buffer Amplifiers}
n _{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.
LT1809/LT1810
Single/Dual 180MHz, 350V/µs
Rail-to-Rail Input and Output
Low Distortion Op Amps
DESCRIPTION
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, a gain-bandwidth product of 180MHz (A_V ≥ 10)
and an 85mA output current to fit the needs of low voltage,
high performance signal conditioning systems.
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.
The LT1809/LT1810 have very low distortion (–90dBc) up
to 5MHz that allows them to be used in high performance
data acquisition systems.
The LT1809/LT1810 maintain their performance for supplies
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.
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.
TYPICAL APPLICATION
V_IN
1V_P-P
5V
+
LT1809
–
–5V
R1
1k
High Speed ADC Driver
5V
R3
49.9Ω
LTC^®1420
+A_IN PGA GAIN = 1
C1
–A_IN ^{REF = 2.048V}
••
•
470pF
R2
1k
1809 TA01a
–5V
12 BITS
10Msps
Distortion vs Frequency
–40
A_V = +1
–50
V_IN = 2V_P-P
V_S = ±5V
–60
–70
R_L = 100Ω, 2ND
–80
–90
–100
–110
0.3
R_L = 100Ω, 3RD
R_L = 1k, 3RD
R_L = 1k, 2ND
1
10
FREQUENCY (MHz)
30
1809 TA01b
180910fa
1