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LT1797

Linear Technology
Part Number LT1797
Manufacturer Linear Technology
Published Mar 22, 2005
Description 10MHz/ Rail-to-Rail Input and Output Op Amp in SOT-23
Detailed Description LT1797 10MHz, Rail-to-Rail Input and Output Op Amp in SOT-23 FEATURES s s s s s s s s s s s s s DESCRIPTIO U APPLICAT...
Datasheet PDF File LT1797 PDF File

LT1797
LT1797


Overview
LT1797 10MHz, Rail-to-Rail Input and Output Op Amp in SOT-23 FEATURES s s s s s s s s s s s s s DESCRIPTIO U APPLICATIO S 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: 88dB Min High PSRR: 80dB Min Input Bias Current: 300nA Max Input Offset Current: 25nA Max 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
s s s s s 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 VOUT = 3V – 0.
1Ω • ISENSE ISENSE = 0A TO 30A ACCURACY ≈ 3% VOUT Q1 FMMT493 30.
1Ω 1% 3.
3k 0805 ×3 R1 4.
7k 1k 1% VS = 3V – + LT1797 0.
1µF R1 REDUCES Q1 DISSIPATION BZX84C6V8 VZ = 6.
8V –48V SUPPLY (–42V TO –56V) SETTLES TO 1% IN 2µs, 1V OUTPUT STEP 0.
003Ω 1% 3W – ISENSE + 1797 TA01 –48V L...


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