поискавой системы для электроныых деталей |
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LM1894 датащи(PDF) 3 Page - National Semiconductor (TI) |
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LM1894 датащи(HTML) 3 Page - National Semiconductor (TI) |
3 / 10 page Electrical Characteristics (Continued) V S = 8V, TA = 25˚C, VIN = 300 mV at 1 kHz, circuit shown in Figure 1 unless otherwise specified Parameter Conditions Min Typ Max Units CONTROL SIGNAL PATH Peak Detector Input Impedance Pin 9 560 700 840 Ω Voltage Gain Pin 9 to Pin 10 30 33 36 V/V Attack Time Measured to 90% of Final Value 300 500 700 µs with 10 kHz Tone Burst Decay Time Measured to 90% of Final Value 45 60 75 ms with 10 kHz Tone Burst DC Voltage Range Minimum Bandwidth to Maximum 1.1 3.8 V Bandwidth Note 2: For operation in ambient temperature above 25˚C, the device must be derated based on a 150˚C maximum junction temperature and a thermal resistance of 1) 80˚C/W junction to ambient for the dual-in-line package, and 2) 105˚C/W junction to ambient for the small outline package. Note 3: To force the DNR system into maximum bandwidth, DC ground the input to the peak detector, pin 9. A negative temperature coefficient of −0.5%/˚C on the bandwidth, reduces the maximum bandwidth at increased ambient temperature or higher package dissipation. AC ground pin 9 or pin 6 to select minimum bandwidth. To change minimum and maximum bandwidth, see Appliction Hints. Note 4: The maximum noise reduction CCIR/ARM weighted is about 14 dB. This is accomplished by changing the bandwidth from maximum to minimum. In actual operation, minimum bandwidth is not selected, a nominal minimum bandwidth of about 2 kHz gives −10 dB of noise reduction. See Application Hints. Note 5: The CCIR/ARM weighted noise is measured with a 40 dB gain amplifier between the DNR system and the CCIR weighting filter; it is then input referred. Note 6: Measured using the Rhode-Schwartz psophometer. Note 7: Pin 10 is DC forced half way between the maximum bandwidth DC level and minimum bandwidth DC level. An AC 1 kHz signal is then applied to pin 10. Its peak-to-peak amplitude is VDC (max BW) − VDC (min BW). Typical Performance Characteristics Supply Current vs Supply Voltage DS007918-13 Channel Separation (Referred to the Output) vs Frequency DS007918-14 Power Supply Rejection Ratio (Referred to the Output) vs Frequency DS007918-15 THD vs Frequency DS007918-16 −3 dB Bandwidth vs Frequency and Control Signal DS007918-17 Gain of Control Path vs Frequency (with 10 kHz FM Pilot Filter) DS007918-18 www.national.com 3 |
Аналогичный номер детали - LM1894 |
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Аналогичное описание - LM1894 |
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