FOD2742B: 8-PIN SOIC Error Amplifier Optocoupler
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The FOD2742 Optically Isolated Amplifier consists of the popular KA431 precision programmable shunt reference and an optocoupler. The optocoupler is a gallium arsenide (GaAs) light emitting diode optically coupled to a silicon phototransistor. It comes in 3 grades of reference voltage tolerance = 2%, 1%, and 0.5%.
The Current Transfer Ratio (CTR) ranges from 100% to 200%. It also has an outstanding temperature coefficient of 50 ppm/°C. It is primarily intended for use as the error amplifier/reference voltage/optocoupler function in isolated ac to dc power supplies and dc/dc converters.
When using the FOD2742, power supply designers can reduce the component count and save space in tightly packaged designs. The tight tolerance reference eliminates the need for adjustments in many applications. The device comes in a 8-pin small outline package.
The Current Transfer Ratio (CTR) ranges from 100% to 200%. It also has an outstanding temperature coefficient of 50 ppm/°C. It is primarily intended for use as the error amplifier/reference voltage/optocoupler function in isolated ac to dc power supplies and dc/dc converters.
When using the FOD2742, power supply designers can reduce the component count and save space in tightly packaged designs. The tight tolerance reference eliminates the need for adjustments in many applications. The device comes in a 8-pin small outline package.
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Technical Documentation & Design Resources
| Application Notes (1) | Package Drawings (1) |
| Data Sheets (1) | Conformance Reports (4) |
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Availability & Samples
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Specifications
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Interactive Block Diagram
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Case Outline |
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| FOD2742B | Active |
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FOD2742B | SOIC-8 | 751DZ | 1 | 260 | Tube | 3000 | $0.4017
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| FOD2742BR2 | Active |
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FOD2742B | SOIC-8 | 751DZ | 1 | 260 | Tape and Reel | 2500 | $0.4752 | ||||||||
| FOD2742BR2V | Active |
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FOD2742B | SOIC-8 | 751DZ | 1 | 260 | Tape and Reel | 2500 | $0.6248 | ||||||||
| FOD2742BV | Active |
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FOD2742B | SOIC-8 | 751DZ | 1 | 260 | Tube | 3000 | $0.4385
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| Market Leadtime (weeks) | : | 17 to 20 |
| Market Leadtime (weeks) | : | Contact Factory |
| Avnet (2020-08-19 00:00) | : | >1K |
| Market Leadtime (weeks) | : | 8 to 12 |
| ON Semiconductor (2020-09-02 00:00) | : | 12,500 |
| Market Leadtime (weeks) | : | 17 to 20 |
Product
Description
Pricing ($/Unit)
Compliance
Status
VREF Tolerance (%)
VREF (Min) (V)
VREF (Typ) (V)
VREF (Max) (V)
CTR (Min) (%)
CTR (Max) (%)
CTR tested @ IF (mA)
VCE (sat) (Max) (V)
BVCEO (Min) (V)
VISO (Min) (V)
TOPR (Min) (°C)
TOPR (Max) (°C)
Package Type
Case Outlines
751DZ
Application
Diagram - Block
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