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LF398M
+StücklisteLF398-N MONOLITHIC SAMPLE AND HO
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HerstellerNational Semiconductor
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Herstellerteil #LF398M
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Datenblatt LF398M DataSheet
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Auf Lager7618
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Spezifikationen
| Attribut | Wert |
| Part Status | Active |
| 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 / Case | 14-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 14-SOIC |
Übersicht
Description
The LF398M operates with a wide range of supply voltages and offers a fast acquisition time, making it suitable for high-speed applications. It typically includes a FET input stage for improved performance characteristics, such as low bias current and offset voltage. The device is commonly used in data acquisition systems, digital voltmeters, and audio signal processing.
Overall, the LF398M is valued for its precision, reliability, and versatility in maintaining signal integrity during the sampling process, making it a fundamental component in various electronic and instrumentation applications.
Equivalent
1. AD781 from Analog Devices
2. ICL7650 from Intersil/Renesas
3. OPA615 from Texas Instruments
4. TL710C from Texas Instruments
5. HA5320 from Intersil/Renesas
These alternatives may have variations in specifications, so it’s essential to review their datasheets to ensure compatibility with your application.
Features
1. High Accuracy: It offers a low input offset voltage and low drift over temperature, ensuring precise signal sampling.
2. Fast Acquisition: Capable of acquiring input signals quickly, making it suitable for applications requiring rapid sampling.
3. Low Droop Rate: Maintains signal integrity over time with minimal voltage droop when the hold mode is active.
4. Wide Bandwidth: Supports a wide range of input frequencies, allowing it to handle various signal types.
5. Single Supply Operation: Can operate on a single power supply, simplifying design requirements.
6. Wide Temperature Range: Suitable for use in environments with varying temperatures, maintaining performance over a broad range.
7. Compact Size: Available in a compact package, making it ideal for space-constrained applications.
These features make the LF398M suitable for applications in data acquisition systems, sample-and-hold circuits, and other precision signal processing tasks.
Pinout
1. Pin 1 (BAL/COMP): Balance/Compensation. Used for offset voltage balancing or compensation.
2. Pin 2 (V-): Negative supply voltage.
3. Pin 3 (INPUT): Signal input pin where the analog signal to be sampled is applied.
4. Pin 4 (GROUND): Ground reference for the device.
5. Pin 5 (HOLD CAPACITOR): Connection for the hold capacitor, which stores the sampled voltage.
6. Pin 6 (OUTPUT): Output pin where the held voltage is available.
7. Pin 7 (HOLD/CONTROL): Control input to switch between sample (track) and hold modes.
8. Pin 8 (V+): Positive supply voltage.
The LF398M is designed for high accuracy and low droop rate, making it suitable for precision applications where an analog signal needs to be sampled and held constant for a period of time.
Manufacturer
Application
1. Data Acquisition Systems: Ensures stable signal capture for analog-to-digital conversion.
2. Analog Signal Processing: Provides temporary storage of analog signals for filtering and analysis.
3. Telecommunications: Enhances signal integrity by stabilizing fluctuating signals.
4. Industrial Control Systems: Aids in maintaining precise control over processes by holding sensor data.
5. Medical Instruments: Used in imaging and diagnostic equipment for capturing and holding vital signal data.
6. Instrumentation: Provides accurate signal sampling in test and measurement equipment.
These applications benefit from the LF398M's low offset, low drift, and high accuracy characteristics.