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LT1797CS5-PBF

Description
10MHz, Rail-to-Rail Input and Output Op Amp in SOT-23
File Size187KB,14 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LT1797CS5-PBF Overview

10MHz, Rail-to-Rail Input and Output Op Amp in SOT-23

FEATURES
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LT1797
10MHz, Rail-to-Rail
Input and Output
Op Amp in SOT-23
DESCRIPTION
The LT
®
1797 is a unity-gain stable 10MHz op amp available
in the small SOT-23 package that operates on all single
and split supplies with a total voltage of 2.7V to 12V. The
amplifier draws 1mA of quiescent current and has a slew
rate of 2.25V/μs.
The input common mode range of the LT1797 includes
both rails, making it ideal for current sensing applications.
The input stage incorporates phase reversal protection
to prevent false outputs from occurring when the inputs
are driven beyond the supplies. Protective resistors are
included in the input leads so that current does not become
excessive when the inputs are forced above or below the
supplies.
The output of the LT1797 can swing to within 50mV of V
+
and 8mV of V
without drawing excess current in either
condition. The amplifier can drive loads up to 25mA and
still maintain rail-to-rail capability.
The LT1797 op amp is available in the space saving 5-lead
SOT-23 package.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT and Over-The-Top are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Rail-to-Rail Input and Output
Small SOT-23 Package
Gain Bandwidth Product: 10MHz
–40°C to 85°C Operation
Slew Rate: 2.25V/μs
Low Input Offset Voltage: 1.5mV Max
High Output Current: 25mA Min
Specified on 3V, 5V and ±5V Supplies
High Voltage Gain: 1000V/mV 10k Load
High CMRR: 96dB Typ
High PSRR: 90dB Typ
Input Bias Current: 300nA Max
Input Offset Current: 25nA Max
Low Profile (1mm) SOT-23 (ThinSOT™) Package
APPLICATIONS
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Portable Instrumentation
Rail-to-Rail Buffer Amplifiers
Low Voltage Signal Processing
Driving A/D Converters
Battery-Powered Systems
TYPICAL APPLICATION
Fast Compact –48V Current Sense
V
OUT
= 3V – 0.1Ω • I
SENSE
I
SENSE
= 0A TO 30A
ACCURACY ≈ 3%
V
OUT
Q1
FMMT493
30.1Ω
1%
3.3k
0805
3
R1
4.7k
1k
1%
V
S
= 3V
Small-Signal Response
BZX84C6V8
V
Z
= 6.8V
–48V SUPPLY
(–42V TO –56V)
0.003Ω
1% 3W
I
SENSE
+
+
1797 TA01
LT1797
0.1μF
–48V LOAD
R1 REDUCES Q1 DISSIPATION
1797 TA01b
SETTLES TO 1% IN 2μs,
1V OUTPUT STEP
V
S
= ±2.5V
A
V
= 1
R
L
= 10k
1797fb
1

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Description 10MHz, Rail-to-Rail Input and Output Op Amp in SOT-23 10MHz, Rail-to-Rail Input and Output Op Amp in SOT-23 10MHz, Rail-to-Rail Input and Output Op Amp in SOT-23 10MHz, Rail-to-Rail Input and Output Op Amp in SOT-23 10MHz, Rail-to-Rail Input and Output Op Amp in SOT-23
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