HA12211NT Просмотр технического описания (PDF) - Renesas Electronics

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HA12211NT

Audio Signal Processor for Cassette Deck (Deck 1 Chip)

Renesas Electronics 

Functional Description

Power Supply Range

This IC is designed to operate on single supply, shown by table 1.

Table 1 Spply Voltage

Item

Single Supply

Power Supply Range

9.5V to 15.0V

HA12211NT

Reference Voltage

So little is the current drivability of AC reference (Vref) that the Vref voltage may be altered by A/B

switching of PB-EQ.

Provided it causes you anxiety, please use the constant 1/2 VCC voltage circuit, for example, figure 1.

In addition, this IC has a capacitor charger for Vref pin.

470Ω

VCC

1

30

GND

7

Vref

+

470µF

Lch PB-EQ reference voltage

Lch REC-EQ reference voltage

Rch REC-EQ reference voltage

Rch PB-EQ reference voltage

Figure 1 Reference Voltage Circuit

Rev.2, Jun. 1997, page 7 of 34

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