HA12228F Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HA12228F

Audio Signal Processor for Car Deck (Decode only Dolby B-type NR* with PB Amp.)

Hitachi -> Renesas Electronics 

HA12228F/HA12229F

VCC

3 Vref4

15

+

−

Line Amp. circuit

28 Vref3

26

36

+

GND

38 Vref2

+

−

32 Vref1

Lch equalizer

Rch equalizer

+

−

MS block

: Internal reference voltage

Figure 1b The HA12229F Block Diagram of Reference Supply Voltage

Operating Mode Control

HA12228F/HA12229F provides fully electronic switching circuits. And each operating mode control are

controlled by parallel data (DC voltage).

When a power supply of this IC is cut off, for a voltage, in addition to a mode control terminal even though

as do not destruct it, in series for resistance.

Table 2 Threshold Voltage (VTH)

Pin No.

Lo

Hi

Unit

17, 18, 19, 20, 21*

–0.2 to 1.0

3.5 to VCC

V

Test Condition

Input Pin Measure

V

Note: * Non connection regarding HA12229F.

Rev.2, Dec. 2000, page 10 of 51

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