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LT1782CS5#TRPBF

Micropower Over-The-Top RRIO Op-Amp, 2.5-18V, 200kHz GBW, TSOT-23-5

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Manufacturer Part：

LT1782CS5#TRPBF

Package：

TSOT-23-5 (2.9 x 1.6 x 1.0 mm)

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Description

Product Overview

The LT1782CS5#TRPBF from Analog Devices is a micropower Over-The-Top rail-to-rail input and output operational amplifier in a 5-lead TSOT-23 package. It operates from 2.5 V to 18 V total supply with 55 µA max quiescent current and unique ability to handle input voltages above the positive supply rail.

Key Specifications

Type Over-The-Top RRIO Op-Amp
Channels 1
Supply Voltage Range 2.5 V to 18 V
Quiescent Current 45 µA (typical), 55 µA (max)
Input Offset Voltage 500 µV (typical at 25°C)
Gain-Bandwidth Product 200 kHz
Slew Rate 0.07 V/µs
Input Voltage Range 0 V to 18 V (independent of supply)
Output Current 18 mA (min)
CMRR 80 dB (typical)
PSRR 100 dB (typical)
Package TSOT-23-5 (1 mm height)
Operating Temperature 0°C to 70°C

Features

  • Over-The-Top input operation above V+
  • Rail-to-rail input and output
  • Micropower: 55 µA max supply current
  • Reverse battery protection to 18 V
  • Input range independent of supply: 0 V to 18 V

Applications

  • Portable instrumentation
  • Battery or solar-powered systems
  • 4-20 mA current loop transmitters
  • Supply current sensing and battery monitoring
  • Sensor conditioning and MUX amplifiers

The LT1782CS5#TRPBF from Analog Devices is a micropower Over-The-Top rail-to-rail input and output operational amplifier in a 5-lead TSOT-23 package. Its unique Over-The-Top architecture allows either or both inputs to operate above the positive supply rail, handling up to 18 V common-mode voltage independent of the 2.5 V to 18 V supply range. This makes it invaluable for high-side current sensing, battery monitoring, and 4-20 mA loop applications. The amplifier draws only 45 µA typical quiescent current and features reverse battery protection. The input stage incorporates phase reversal protection, and the output can drive loads up to 18 mA while maintaining rail-to-rail capability.

The LT1782CS5#TRPBF uses a unique Over-The-Top input stage architecture that allows the input common-mode voltage to exceed the positive supply rail. The input stage uses PNP differential pairs with special biasing that references to the negative supply rail rather than the positive supply. When inputs are below V+, conventional PNP operation occurs. When inputs exceed V+, the Over-The-Top circuitry activates, using an auxiliary current path to maintain amplifier functionality. The output stage uses a complementary NPN/PNP push-pull configuration for rail-to-rail output swing. The 200 kHz gain-bandwidth product and 0.07 V/µs slew rate reflect the low 45 µA total supply current budget. Reverse battery protection uses internal diodes that block current flow when supply polarity is reversed.

Pin Name Type Function
1 VIN+ Input Non-inverting input
2 V- Power Negative supply / ground
3 VIN- Input Inverting input
4 VOUT Output Amplifier output
5 V+ Power Positive supply
  • High-side current sensing with inputs above supply
  • 4-20 mA current loop receiver/transmitter circuits
  • Battery monitoring with stacked cell configurations
  • Solar-powered sensor signal conditioning
  • Portable instrumentation with wide supply range
Manufacturer Part Number Package Notes
Analog Devices LT1782IS5#TRPBF TSOT-23-5 -40°C to 85°C I-grade
Analog Devices LT1783CS5#TRPBF TSOT-23-5 Higher speed version, 2MHz GBW
Texas Instruments LMV358IDGKR VSSOP-8 Dual RRIO, 1MHz GBW
Microchip MCP6001T-I/OT SOT-23-5 1MHz GBW, 1.8-5.5V, RRIO
STMicroelectronics TSV991ILT SOT-23-5 10MHz GBW, RRIO op-amp
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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