Datasheet LT1797 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | 10MHz, Rail-to-Rail Input and Output Op Amp in SOT-23 |
| 页数 / 页 | 14 / 1 — FeaTures. DescripTion. Rail-to-Rail Input and Output. Small SOT-23 … |
| 文件格式/大小 | PDF / 778 Kb |
| 文件语言 | 英语 |
FeaTures. DescripTion. Rail-to-Rail Input and Output. Small SOT-23 Package. Gain Bandwidth Product: 10MHz
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LT1797 10MHz, Rail-to-Rail Input and Output Op Amp in SOT-23
FeaTures DescripTion
n
Rail-to-Rail Input and Output
The LT®1797 is a unity-gain stable 10MHz op amp available n
Small SOT-23 Package
in the small SOT-23 package that operates on all single n
Gain Bandwidth Product: 10MHz
and split supplies with a total voltage of 2.7V to 12V. The n
–40°C to 85°C Operation
amplifier draws 1mA of quiescent current and has a slew n Slew Rate: 2.25V/µs rate of 2.25V/µs. n Low Input Offset Voltage: 1.5mV Max The input common mode range of the LT1797 includes n High Output Current: 25mA Min both rails, making it ideal for current sensing applications. n Specified on 3V, 5V and ±5V Supplies The input stage incorporates phase reversal protection n High Voltage Gain: 1000V/mV 10k Load to prevent false outputs from occurring when the inputs n High CMRR: 96dB Typ are driven beyond the supplies. Protective resistors are n High PSRR: 90dB Typ included in the input leads so that current does not become n Input Bias Current: 300nA Max excessive when the inputs are forced above or below the n Input Offset Current: 25nA Max supplies. n Low Profile (1mm) SOT-23 (ThinSOT™) Package The output of the LT1797 can swing to within 50mV of V+ and 8mV of V– without drawing excess current in either
applicaTions
condition. The amplifier can drive loads up to 25mA and n still maintain rail-to-rail capability. Portable Instrumentation n Rail-to-Rail Buffer Amplifiers The LT1797 op amp is available in the space saving 5-lead n Low Voltage Signal Processing SOT-23 package. n Driving A/D Converters L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n ThinSOT and Over-The-Top are trademarks of Analog Devices, Inc. All other trademarks are the Battery-Powered Systems property of their respective owners.
Typical applicaTion Fast Compact –48V Current Sense Small-Signal Response
VOUT = 3V – 0.1Ω • ISENSE ISENSE = 0A TO 30A ACCURACY ≈ 3% VOUT Q1 R1 1k FMMT493 4.7k 1% VS = 3V 30.1Ω 1% – 3.3k R1 REDUCES Q1 DISSIPATION 0805 LT1797 ×3 + 0.1µF 1797 TA01b SETTLES TO 1% IN 2µs, VS = ±2.5V A BZX84C6V8 1V OUTPUT STEP V = 1 0.003Ω R V L = 10k Z = 6.8V 1% 3W –48V SUPPLY –48V LOAD (–42V TO –56V) – + 1797 TA01 ISENSE 1797fc For more information www.linear.com/LT1797 1
FeaTures DescripTion
n
Rail-to-Rail Input and Output
The LT®1797 is a unity-gain stable 10MHz op amp available n
Small SOT-23 Package
in the small SOT-23 package that operates on all single n
Gain Bandwidth Product: 10MHz
and split supplies with a total voltage of 2.7V to 12V. The n
–40°C to 85°C Operation
amplifier draws 1mA of quiescent current and has a slew n Slew Rate: 2.25V/µs rate of 2.25V/µs. n Low Input Offset Voltage: 1.5mV Max The input common mode range of the LT1797 includes n High Output Current: 25mA Min both rails, making it ideal for current sensing applications. n Specified on 3V, 5V and ±5V Supplies The input stage incorporates phase reversal protection n High Voltage Gain: 1000V/mV 10k Load to prevent false outputs from occurring when the inputs n High CMRR: 96dB Typ are driven beyond the supplies. Protective resistors are n High PSRR: 90dB Typ included in the input leads so that current does not become n Input Bias Current: 300nA Max excessive when the inputs are forced above or below the n Input Offset Current: 25nA Max supplies. n Low Profile (1mm) SOT-23 (ThinSOT™) Package The output of the LT1797 can swing to within 50mV of V+ and 8mV of V– without drawing excess current in either
applicaTions
condition. The amplifier can drive loads up to 25mA and n still maintain rail-to-rail capability. Portable Instrumentation n Rail-to-Rail Buffer Amplifiers The LT1797 op amp is available in the space saving 5-lead n Low Voltage Signal Processing SOT-23 package. n Driving A/D Converters L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n ThinSOT and Over-The-Top are trademarks of Analog Devices, Inc. All other trademarks are the Battery-Powered Systems property of their respective owners.
Typical applicaTion Fast Compact –48V Current Sense Small-Signal Response
VOUT = 3V – 0.1Ω • ISENSE ISENSE = 0A TO 30A ACCURACY ≈ 3% VOUT Q1 R1 1k FMMT493 4.7k 1% VS = 3V 30.1Ω 1% – 3.3k R1 REDUCES Q1 DISSIPATION 0805 LT1797 ×3 + 0.1µF 1797 TA01b SETTLES TO 1% IN 2µs, VS = ±2.5V A BZX84C6V8 1V OUTPUT STEP V = 1 0.003Ω R V L = 10k Z = 6.8V 1% 3W –48V SUPPLY –48V LOAD (–42V TO –56V) – + 1797 TA01 ISENSE 1797fc For more information www.linear.com/LT1797 1