ALD2331PAL

Current - Output (Typ):	50mA @ 5V
Supplier Device Package:	8-PDIP
Mounting Type:	Through Hole
Package / Case:	8-DIP (0.300", 7.62mm)
Operating Temperature:	0°C ~ 70°C
Hysteresis:	--
Propagation Delay (Max):	--
CMRR, PSRR (Typ):	80dB CMRR, 75dB PSRR
Current - Quiescent (Max):	180µA
Series:	EPAD®
Current - Input Bias (Max):	20pA @ 5V
Voltage - Input Offset (Max):	2mV @ 5V
Voltage - Supply, Single/Dual (±):	3 V ~ 10 V, ±1.5 V ~ 5 V
Output Type:	CMOS, NMOS, Open-Drain, TTL
Number of Elements:	2
Type:	General Purpose
Part Status:	Active
Packaging:	Tube

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Introduction

The ALD2331PAL is a Linear Comparator from Altera Corporation. It is a single supply, logic-compatible linear comparator having output muxing capabilities. The device offers excellent linearity with a low voltage supply, high linear comparison range and low power consumption. In addition, it has the ability to integrate several functions into a single device. The ALD2331PAL is used in a wide range of applications such as robotics, power systems, communication systems and process control.

Application Fields

The ALD2331PAL is best suited for applications requiring well-controlled outputs, such as digital logic circuits, switch debouncing, and temperature control. By using a single device, the ALD2331PAL’s control circuit minimizes the need for other comparators and switches.In robotics, the ALD2331PAL can be used to compare the positions of two motors or to control the torque generated by a motor. It can also be used to control the speed of a motor and the rate of rotation.In power systems, the ALD2331PAL can be used to compare output voltages, detect over/undervoltage conditions, and to control the current through a load. It can also be used as a voltage reference for other control systems and to implement cost-effective power line protection circuits.Moreover, the device can be used in communication systems for data encryption, signal encoding, and for controlling the transmission rate for high-speed data links. It can also be used to implement automatic gain control systems and other gain control functions, as well as for timing synchronization in message transfer protocols.In process control, the ALD2331PAL can be used in automated systems for precise control of temperature, pressure and other processes.

Working Principle

The ALD2331PAL is a multi-channel linear comparator with selectable reference voltages. It has two differential inputs that accept an input signal and a reference input signal and a selectable reference voltage range, typically 0.8V to 2.4V.The device utilizes a two-stage Differential Amplifier and Voltage Follower configuration. The two stage Differential Amplifier amplifies the difference between the two input signals and the Voltage Follower then drives the load according to the voltage difference.The device has a programmable Over-Current Protection (OCP) feature that reduces power dissipation in case of overcurrent in the load. The OCP is programmable via the OCP pin.The device has an internal, configurable logic output mux that can be used to control the output logic of the device and to route the output signal to a particular destination.The ALD2331PAL has an open-drain output stage and can be used in a variety of power delivery and management applications.

Conclusion

The ALD2331PAL from Altera Corporation is a linear comparator device suitable for a wide range of applications. Its excellent linearity with a low voltage supply, high linear comparison range and low power consumption make it an ideal choice for applications requiring well-controlled outputs. In addition, it can be used in robotics, power systems, communication systems and process control. The device utilizes a two-stage Differential Amplifier and Voltage Follower configuration and has an internal, configurable logic output mux that can be used to route the output signal to a particular destination. The ALD2331PAL has an open-drain output stage and can be used in a variety of power delivery and management applications.

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