Friday, November 22, 2024

Dual High-Output Amplifier For Driving Industrial And Automotive Loads

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STMicroelectronics introduces TSB582, a dual high-output amplifier that simplifies circuitry for driving industrial and automotive loads.

Op-Amp are used to create a balance of voltage and current across the two ends of a device. But the problem in using them is their slew rate as well as the limitations relating to the offset voltage and current. This is a major reason for its failure.

Credit : STMicroelectronics

STMicroelectronics TSB582 dual high-output amplifier simplifies circuitry for driving inductive and low-ohmic loads like motors, valves, and rotary resolvers in industrial applications and automotive systems such as steer-by-wire and auto-parking.

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The TSB582 operates in a range of 4V-36V supplies and contains two operational amplifiers (op amps), each capable of sinking/sourcing up to 200mA. This enables direct connection of a load in bridge-tied mode. Therefore allowing one TSB582 to replace two single-channel power op amps or high-current drivers built from discrete components.

Features
  • Wide supply voltage: 4 V – 36 V
  • High output current 200 mA
  • Rail-to-rail output, low rail input
  • Gain bandwidth product: 3.1 MHz
  • High slew rate: 2 V/µs
  • Internal thermal shutdown & output current limiter
  • Enhanced RF noise immunity
  • High tolerance to ESD: 4 kV HBM
  • Extended temperature range: -40 °C to 125 °C
  • Automotive grade
  • Low noise 45 nV/√Hz @ 1 kHz
  • Icc (typ.) = 2.3 mA
  • Unity gain stable
  • Low offset 2.4 mV max. (25 °C) / 3 mV max. (full temperature range)
  • Low input bias current
  • Packages: SO8 & DFN8 exposed pad

The amplifier is available in industrial as well as automotive grade version addressing applications such as motor-position sensing including steer-by-wire and electric-traction motors, as well as tracking road-wheel rotation in autonomous driver-assistance systems and self-driving vehicles. Industrial applications include controlling the robot’s position and movements, conveyor belt and servo motors.


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