LT1797 Datasheet | Linear Technology

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: 1.5m V Max High Output Current: 25m A Min Specified on 3V, 5V and ± 5V Supplies High Voltage Gain: 1000V/m V 10k Load High CMRR: 88d B Min High PSRR: 80d B Min Input Bias Current: 300n A Max Input Offset Current: 25n A 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 1m A of quiescent current and has a slew rate of 2.25V/µs. The input mon 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 bee excessive when the inputs are forced above or below the supplies. The output of the LT1797 can swing to within 50m V of V + and 8m V of V - without drawing excess current in either condition. The amplifier can drive loads up to 25m A 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 pact - 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...