HA12230NT View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

HA12230NT

Audio Signal Processor for Cassette Deck

Renesas Electronics 

HA12230NT

Operating Mode Control

HA12230NT provide fully electronic switching circuits. And each operating mode control is controlled by

parallel data (DC voltage).

Table 2 Threshold Voltage (Vth)

Pin No.

Lo

Mid

19, 20, 22

0.0 to 0.5

—

Hi

2.4 to VCC

Unit

V

Test Condition

Input Pin Measure

V

21

Note:

0.0 to 0.5

1.2 to 1.8

2.4 to VCC

V

1. Each pins are on pulled down with 100 kΩ internal resistor. Therefore, it will be low-level when

each pins are open.

2. Over shoot level and under shoot level of input signal must be the standardized.

(High: V , Low: –0.2 V)

CC

Block Diagram

Figure 2 shows the block diagram.

As this IC is built-in REC return switch, the configuration system can be simple system using a few

external component and the REC/PB head.

About these logics, please look at the Parallel Data Format.

REC-OUT(L)

8.2 k

16

2.2 µ

30

B head

A head

BIN(L) 29

AIN(L) 28

Vref

REC - EQ

Return SW

B

+

A−

330 k

180

120/70

22 k 15 k

27 26

0.01 µ

Figure 2 Block Diagram (Lch)

REC-IN(L)

18

0.47 µ 5.1 k

To 24

0.1 µ

5.1 k 5.1 k

25

EQOUT(L)

Unit R : Ω

C:F

Rev.6, Nov. 2000, page 8 of 32

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