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LM239AD
Analog Comparators Quad Differential Comparator
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製造商零件號 # : LM239AD
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包裝/封裝: SOIC-14
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製造商: Texas Instruments
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產品分類 : Comparators
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LM239AD 數據表
價格 (USD)
| 數量 | 單價 | 總價 |
|---|---|---|
| 1 | $1.482 | $1.48 |
| 10 | $1.285 | $12.85 |
| 30 | $1.164 | $34.92 |
| 100 | $1.038 | $103.80 |
| 500 | $0.983 | $491.50 |
| 1000 | $0.958 | $958.00 |
這些價格會受到市場波動的影響，需要提交報價才能取得最新價格。
詳細說明
Texas Instruments' LM239AD is a quad voltage comparator IC designed for high-speed operation and low input offset voltage. With four independent voltage comparators and a wide power supply voltage range, it is suitable for a variety of precision measurement and control applications. The IC's low input bias currents and offset currents ensure high accuracy and stability, while its open-collector output stage allows for convenient interfacing with other circuits, adding flexibility to system design. The LM239AD also features a wide common-mode input voltage range, including ground, enabling versatile configurations to meet different application requirements. Additionally, its robust design and availability in various package options make it a reliable choice for harsh environmental conditions and diverse assembly requirements
主要特徵
- Improved thermal management
- Simplified circuit design
- Increase device lifespan
規格
以下是所選零件的基本參數，涉及零件的特性及其所屬類別。
| Number of channels | 4 | Output type | Open-collector |
| Propagation delay time (µs) | 1.3 | Vs (max) (V) | 36 |
| Vs (min) (V) | 2 | Vos (offset voltage at 25°C) (max) (mV) | 3 |
| Iq per channel (typ) (mA) | 0.2 | Input bias current (±) (max) (nA) | 50 |
| Rail-to-rail | Out | Rating | Catalog |
| Operating temperature range (°C) | -25 to 85 | Features | Standard comparator |
| VICR (max) (V) | 34.5 | VICR (min) (V) | 0 |
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is LM239AD?
The LM239AD is a quad differential comparator IC designed by Texas Instruments. It is commonly used in applications that require comparison of analog signals, such as voltage level detection, zero-crossing detection, and waveform shaping.
How Does LM239AD Work?
The LM239AD works by comparing the voltages present at its four input pins and providing a high or low output based on the comparison results. It has open-drain outputs which can be pulled up to a desired voltage level for compatibility with different logic families. The device is designed for use in both single-supply and dual-supply voltage systems.
How Many Pins does LM239AD have and What are the Functions of the Pinout Configuration?
The LM239AD is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- VCC+: Positive power supply pin.
- VCC-: Negative power supply pin.
- IN1, IN2, IN3, IN4: Differential input pins for comparators 1, 2, 3, and 4.
- OUT1, OUT2, OUT3, OUT4: Output pins for comparators 1, 2, 3, and 4.
- GND: Ground pin.
What are the Pros and Cons of LM239AD?
Pros:
- Quad Comparator: Contains four independent comparators in a single package, providing cost and space savings.
- Wide Supply Voltage Range: Compatible with a wide range of supply voltages, making it versatile for various applications.
- Open-Drain Outputs: Allows for flexible output configurations and interface with different logic levels.
- Low Input Offset Voltage: Provides accurate comparison of input signals with minimal offset error.
Cons:
- Propagation Delay: May have non-negligible propagation delay which needs to be considered in timing-critical applications.
- Noisy Environment Sensitivity: Being a comparator, it may be susceptible to noise interference in noisy environments.
- Complex Pinout: The 14-pin SOIC package may require careful attention to pin connections for proper functionality.
Are There Any Equivalents/Alternatives to LM239AD for Recommendation?
- The LM339 from Texas Instruments is a similar quad comparator IC that can be used as an alternative to the LM239AD.
- Alternatives to the LM239AD include the LM2901 from Texas Instruments and the MC3302 from ON Semiconductor.
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