NJW1165 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJW1165

AUDIO PROCESSOR

Japan Radio Corporation  

NJW1165

2. Tone Control

a) Bass: Setting the Cut-off frequency

Bass Filter

12k 12k

8pin

23pin

C

b) Treble: Setting the Cut-off frequency

Treble Filter

fC

=

2π

M

×C ×12k

M changes by gain setting of Tone.

M ≈ 2.65

M ≈ 3.45

M ≈ 8.10

(±15dB)

(±10dB)

(±5dB)

10k

7pin

24pin

C

fC

=

2π

N

× C ×10k

N changes by gain setting of Tone.

N ≈ 0.76

N ≈ 0.58

N ≈ 0.25

(±15dB)

(±10dB)

(±5dB)

3. AUX1, AUX0 Terminal

AUX1/0 are enable to control external logic circuit is

Source current

: 1mA typ. (Ta=25˚C)

Sink current

: 0.5mA typ. (Ta=25˚C)

4. Capacitor for Reference Voltage (21pin)

22µF should be recommended for ripple filter connected to Vref terminal (21pin).

Reducing this capacity may cause to reduce the maximum attenuation level and to increase the output

noise.

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