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參數資料

3. FM muting on: Pin 33 (R33 = 100 kΩ)

The –3 dB limiting sensitivity can be changed by varying R33.

(Currently, R33 is 25 kΩ to set the –3 dB limiting sensitivity to 8 dBμ.)

4. FM muting attenuation adjustment: Pin 22 (R22 is a 30 or 50 kΩ variable resistor)

The pin 23 voltage is divided by the R22 variable resistor and input to pin 22. The no-input noise convergence is

determined by value of the pin 22 voltage.

(The LA1867NM has a noise convergence design target of from 5 dB to 30 dB.)

5. Muting time constant

The LA1867NM allows the volume level to be changed gradually for field variations during weak field reception by

setting the attack and recovery times for the soft mute function.

6. FM mute off function

The muting function is turned off if pin 22 is forcibly connected to ground.

No. 4619-19/32

LA1867NM

Attack time setting

ta = R23 * C22 = 940 μsec

Recovery time setting

tr = C22 * R23 = 23500 μsec

Unit (resistance: Ω, capacitance: F)

相關PDF資料	PDF描述
LA1875M	AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO36
LA1875M	AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO36
LA1883M	AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
LA1886M	AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
LA1888NM	AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64

相關代理商/技術參數	參數描述
LA1867NM-MPB-E	制造商:ON Semiconductor 功能描述:
LA186B-9SEF9UG-3-PF	制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY
LA186B-9SEF-PF	制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY
LA186B-DBK-2-PF	制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY
LA186B-DBK-PF	制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY

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