HA12219NT 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

HA12219NT

Audio Signal Processor for Cassette Deck

Hitachi -> Renesas Electronics 

HA12219NT

Operating Mode Control

HA12219NT provides fully electronic switching circuits. And each operating mode control is controlled

by parallel data (DC voltage).

Table 2 shows the control voltage of each control input pin.

Table 2

Pin No.

18, 20

Control Voltage (Vth)

Lo

Mid

0.0 to 0.5

—

Hi

2.4 to V

CC

Unit

V

Test Condition

Input Pin Measure

V

19

Note:

0.0 to 0.5

1.2 to 1.8

2.4 to VCC

V

1. Each pin is pulled down with 100 kΩ internal resistor. 16 to 18 pins are low-level when each pin

is open.

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

(High: Less than VCC, Low: More than –0.2 V)

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.

B head

A head

REC-OUT(L)

2

4

5

PB-IN B(L)

8

PB-IN A(L)

7

REC - EQ

Return SW

B

+

A

−

10

13

REC-IN

22

PB-OUT

15

Normal Speed

PB-A

Vref

Figure 2 Block Diagram (Lch)

Rev.2, Jul. 1998, page 8 of 29

Share Link: