DRV1101U

Product Overview

Category: Integrated Circuits (ICs)

Use: The DRV1101U is a high-side current sense amplifier designed for use in motor control applications. It is specifically tailored for monitoring the current flowing through a motor to provide accurate feedback for controlling motor speed and torque.

Characteristics: - High accuracy current sensing - Wide input voltage range - Low offset voltage and low quiescent current - Fast response time - Built-in protection features

Package: The DRV1101U is available in a small outline package (SOP) with 8 pins.

Essence: The DRV1101U is an essential component in motor control systems, enabling precise current monitoring and control.

Packaging/Quantity: The DRV1101U is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Common Mode Voltage Range: -0.3V to VCC + 0.3V
• Quiescent Current: 50µA (typical)
• Gain Bandwidth Product: 500kHz (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The DRV1101U has the following pin configuration:

1. OUT: Output pin for the amplified current sense signal.
2. IN+: Non-inverting input for the current sense signal.
3. IN-: Inverting input for the current sense signal.
4. REF: Reference voltage input for setting the gain.
5. GND: Ground reference for the IC.
6. VCC: Power supply input.
7. EN: Enable pin for turning the amplifier on/off.
8. NC: No connection (unused pin).

Functional Features

• High accuracy current sensing: The DRV1101U provides precise current measurements with low offset voltage and high gain accuracy.
• Wide input voltage range: It can operate with a wide range of supply voltages, making it suitable for various motor control applications.
• Fast response time: The amplifier has a fast response time, enabling real-time monitoring and control of motor currents.
• Built-in protection features: The DRV1101U includes built-in protection against overcurrent and overtemperature conditions, ensuring safe operation of the motor.

Advantages and Disadvantages

Advantages: - Accurate current sensing for precise motor control - Wide input voltage range for versatile applications - Fast response time for real-time monitoring - Built-in protection features enhance system reliability

Disadvantages: - Limited pin configuration options - May require additional external components for specific applications

Working Principles

The DRV1101U operates based on the principle of current sensing. It amplifies the voltage drop across a sense resistor connected in series with the motor to obtain an accurate representation of the motor current. This amplified signal is then used for feedback control in motor control systems.

Detailed Application Field Plans

The DRV1101U finds extensive use in various motor control applications, including: - Robotics - Industrial automation - Electric vehicles - HVAC systems - Appliances

Detailed and Complete Alternative Models

• DRV1101: Similar to DRV1101U but available in a different package (DIP)
• DRV1102: Dual-channel version of DRV1101U for applications requiring monitoring of multiple motors simultaneously
• DRV1103: Higher precision variant with improved gain accuracy and lower offset voltage

These alternative models offer similar functionality to the DRV1101U but may have different package options or enhanced specifications.

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