LF398MX

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LF398MX

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IC SAMPL/HOLD 1 CIRCUIT 14SOIC

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Thông số kỹ thuật

thuộc tính Giá trị
Part Status Obsolete
Base Product Number LF398
Amplifier Type Sample and Hold
Number of Circuits 1
Current - Input Bias 10 nA
Voltage - Input Offset 2 mV
Current - Supply 4.5mA
Voltage - Supply Span (Min) 10 V
Voltage - Supply Span (Max) 36 V
Operating Temperature 0°C ~ 70°C
Mounting Type Surface Mount
Package 14-SOIC (0.154", 3.90mm Width)
Supplier Device Package 14-SOIC
Packaging Tape & Reel (TR)

Tổng quan

Description

The LF398MX is a specialized integrated circuit (IC) primarily used for sample-and-hold applications. Manufactured by companies like National Semiconductor, now part of Texas Instruments, this device is designed to capture and maintain an analog voltage level for later processing. The LF398MX ensures high accuracy and low droop rate, making it suitable for precision applications in analog-to-digital conversion systems.
Key features include low input bias current, low offset voltage, and fast acquisition time, which contribute to its effective performance in capturing transient signals. The device operates over a wide range of power supply voltages and is often packaged in a compact, surface-mount form factor for ease of integration into various circuit designs.
Applications for the LF398MX include data acquisition systems, instrumentation, and other electronic systems requiring stable voltage retention. Its ability to hold a sampled voltage accurately over time makes it an essential component in ensuring high-quality signal processing and accuracy in measurement systems.

Equivalent

The LF398MX is a monolithic sample-and-hold amplifier. Equivalent products include the LH398, LF198, and LF298 series for similar sample-and-hold functions. Other suitable alternatives might include the AD781 and AD585 from Analog Devices, and the TS731 from STMicroelectronics. When selecting an equivalent, ensure the specifications match your requirements, such as sampling speed and hold capacitor value. Always check the datasheets for compatibility.

Features

The LF398MX is a precision sample-and-hold amplifier integrated circuit (IC) designed for accurate voltage sampling and retention. Key features include:
1. High Precision: Offers low offset voltage and high accuracy for precise sampling.
2. Fast Acquisition Time: Capable of quickly acquiring input signals, making it suitable for fast signal processing applications.
3. Low Droop Rate: Maintains the sampled voltage with minimal change over time, ensuring stable output during the hold period.
4. Wide Input Voltage Range: Can handle a broad range of input signals, providing versatility in various applications.
5. Low Power Consumption: Efficient power use makes it suitable for portable and battery-powered devices.
6. High Input Impedance: Minimizes loading on the signal source, preserving signal integrity.
7. Temperature Stability: Designed to operate reliably across a wide temperature range.
8. Compact Package: Available in a small form factor, facilitating integration into space-constrained designs.
These features make the LF398MX suitable for applications in data acquisition systems, instrumentation, and control systems where precise voltage measurement and retention are critical.

Pinout

The LF398MX is a monolithic sample-and-hold circuit primarily used in data acquisition systems to capture and hold analog voltage levels. It is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) configuration. Here is a brief overview of its pin functions:
1. V+ (Pin 8): Positive power supply voltage input.
2. GND (Pin 4): Ground connection.
3. IN (Pin 3): Analog input signal.
4. OUT (Pin 6): Held analog output signal.
5. C_H (Pin 5): Connection for the hold capacitor.
6. Hold (Pin 7): Control pin for switching between sample and hold mode. When high, the circuit holds the input voltage.
7. NC (Pin 2): No connection.
8. Balance/Strobe (Pin 1): Used for offset balancing or strobe operation.
This IC is designed to provide high accuracy and fast acquisition time, with a low droop rate, making it suitable for precision analog-to-digital conversion applications.

Manufacturer

The LF398MX is manufactured by Texas Instruments, a global semiconductor company. Texas Instruments designs and manufactures a variety of products, including analog chips and embedded processors, which are used in electronics across a range of industries. They are one of the largest semiconductor companies in the world and are known for their innovation and expertise in developing technologies that support various sectors, including automotive, industrial, electronics, communications, and more.

Application

The LF398MX is a monolithic sample-and-hold amplifier used in various applications. Key application areas include:
1. Data Acquisition Systems: Captures and holds analog signals for conversion to digital form.
2. Analog-to-Digital Conversion: Stabilizes signals for accurate conversion in ADCs.
3. Signal Processing: Used in systems requiring precise signal sampling and processing.
4. Instrumentation: Utilized in measurement devices needing accurate signal retention.
5. Control Systems: Aids in maintaining signal integrity across processing stages.
6. Communication Systems: Ensures stable signal sampling for modulation/demodulation processes.
Its precision and low droop rate make it suitable for applications requiring high accuracy and stability.

Package

The LF398MX is a monolithic sample-and-hold circuit typically found in a surface-mount package. Specifically, it is available in an 8-lead SOIC (Small Outline Integrated Circuit) package, which is compact and suitable for modern electronic applications requiring efficient space utilization.

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