HA12155 データシートの表示（PDF） - Hitachi -> Renesas Electronics

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HA12155

Audio Signal Processor for Cassette Deck (Dolby B/C-type NR with Recording System)

Hitachi -> Renesas Electronics 

HA12155NT/HA12157NT

Equalizer Total Harmonic Distortion vs. Output Level

30

VCC = 14 V

0 dB = –5 dBs

10

Rload = 10 kΩ

RGL = 33 k Ω

RGH = 33 k Ω

RFM = 100 k Ω

3.0

RGP = 33 k Ω

RF/Q = 51 k Ω

RFQ = 51 k Ω

: 15 kHz

: 10 kHz

: 6.3 kHz

: 3.15 kHz

: 1 kHz

: 315 Hz

1.0

0.3

0.1

–10 –5

0

5

10

15

20

Output level Vout (dB)

Equalizer Amplifier Gain (GL) vs. RGL

35

30

VCC = 14V

RGH = RGP = 33 kΩ

RFQ = RF/Q = 51 k Ω

25 RFM = 100 kΩ

f = 315 Hz

20

f = 1 kHz

15

at RGL = 33 k Ω

10

V out = Ð5 dBs

5

5k 10 k 30 k 100 k 300 k 1 M

RGL (Ω)

Rev.4, Jun. 1997, page 52 of 57

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