HA12226 データシートの表示（PDF） - Hitachi -> Renesas Electronics

部品番号

コンポーネント説明

メーカー

HA12226

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

Hitachi -> Renesas Electronics 

HA12226F/HA12227F

R1

RIN

ROUT

15k

25.5mV 21.4dB 300mV

Input

56

8

Output

C2

0.1µ ALC

C4

55

R2

ALC

9 ALCIN R12

2.2k

13 ALCDET

VCC

C12

Figure 12 ALC Block Diagram

ALC Operation Level Necessary

ALC operation level is variable to pin 12 bias (ALC-CAL: 0 to 5 V), and its range is ±4.0 dB.

Unnecessary, pin 12 is unforced.

ALC-CAL = 5V

ALC-CAL = 0V

RIN

Figure 13 ALC-CAL Characteristics

About a Test Pin (Pin 2)

The HA12227F does for testing exclusive terminal for pin 2.

In mount circuit, this terminal is open or connected to GND with a resistor of 33 kΩ.

Rev.6, Dec. 2000, page 17 of 86

Share Link: