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MAX640ESA

Name: MAX640ESA
Rating: 4.7 (12 reviews)

IC REG BUCK ADJ/1.3V 225MA 8SOIC

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規格

Part Status	Obsolete
Function	Step-Down
Output Configuration	Positive
Topology	Buck
Output Type	Adjustable (Fixed)
Number of Outputs	1
Voltage - Input (Min)	4V
Voltage - Input (Max)	11.5V
Voltage - Output (Min/Fixed)	1.3V (3.3V)
Voltage - Output (Max)	11.5V
Current - Output	225mA
Synchronous Rectifier	No
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package	8-SOIC
Base Product Number	MAX640

概述

Description

The MAX640ESA is a precision voltage reference integrated circuit designed by Maxim Integrated (now part of Analog Devices). It provides a stable reference voltage output, typically 2.5V, with low temperature coefficient and excellent long-term stability, making it suitable for various applications requiring precise voltage references, such as analog-to-digital converters (ADCs) and instrumentation.
Key features of the MAX640ESA include a low dropout voltage, low noise, and a wide operating temperature range, ensuring reliable performance in diverse environments. The device's compact 8-pin SOIC package makes it ideal for space-constrained applications. It also offers a high output impedance, minimizing load effects.
Overall, the MAX640ESA is an essential component for designers seeking accuracy and stability in their electronic circuits, enhancing overall system performance in precision measurement and signal processing applications.

Features

The MAX640ESA is a precision voltage reference from Maxim Integrated. Key features include:
1. Voltage Output: Provides a stable output voltage of either 1.5V, 2.5V, 3.0V, or 3.3V, depending on the variant.
2. High Accuracy: Offers a typical accuracy of ±0.5% at +25°C, ensuring reliable performance in precision applications.
3. Low Drift: The device has a low temperature drift of around 30 ppm/°C, maintaining stability across varying temperatures.
4. Noise Performance: Features low output noise, providing clean reference voltage critical for sensitive analog circuits.
5. Supply Voltage Range: Operates with a wide supply voltage range, typically from 2.7V to 11V.
6. Low Power Consumption: Consumes minimal power, making it suitable for battery-operated devices.
7. Compact Package: Available in a small 8-pin SOIC package, facilitating space-efficient designs.
Overall, the MAX640ESA is ideal for applications in data acquisition systems, instrumentation, and precision analog circuits.

Package

The MAX640ESA is packaged in a standard 8-pin dual in-line package (DIP).

Pinout

The MAX640ESA is a voltage supervisor or reset IC with a total of 8 pins. Its primary functions include monitoring power supply voltages and providing a reset signal when the supply voltage falls below a specified threshold.
The pin assignments are as follows:
1. GND (Pin 1): Ground connection.
2. VCC (Pin 2): Power supply input.
3. RESET (Pin 3): Active-low output that indicates a reset condition.
4. SENSE (Pin 4): Voltage sense input for monitoring the supply voltage.
5. NC (Pin 5): No connect (not used).
6. THRESHOLD (Pin 6): Selectable threshold voltage input.
7. DELAY (Pin 7): Adjustable reset delay timing.
8. VREF (Pin 8): Reference voltage output for internal use.
Overall, the MAX640ESA is designed to ensure that microcontrollers or other digital circuits only operate when the supply voltage is stable, preventing erratic behavior during power fluctuations.

Manufacturer

The MAX640ESA is manufactured by Maxim Integrated, which is a semiconductor company known for designing and producing analog and mixed-signal integrated circuits. Maxim Integrated specializes in various applications, including power management, signal processing, and interface solutions. The company focuses on providing innovative solutions for industries such as automotive, telecommunications, consumer electronics, and industrial automation. In 2021, Maxim Integrated was acquired by Analog Devices, Inc., further enhancing its capabilities and expanding its product offerings in the semiconductor market.

Application

The MAX640ESA is a precision voltage reference used in various applications such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), voltage regulation, and precision measurement systems. It is ideal for use in instrumentation, automotive electronics, industrial automation, and consumer electronics, providing stable reference voltages for accurate signal processing and control.

Equivalent

The MAX640ESA chip is a voltage reference. Equivalent products include the LM4040 from Texas Instruments, the REF02 from Analog Devices, and the TL431, which can also serve as a voltage reference. You may also consider the MCP1525 from Microchip and the ADR431 from Analog Devices as alternatives, depending on specific requirements like tolerance, temperature coefficient, and output voltage. Always verify specifications before substitution.