HA12209F データシートの表示（PDF） - Hitachi -> Renesas Electronics

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HA12209F

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

Hitachi -> Renesas Electronics 

HA12209F

Functional Description

Power Supply Range

HA12209F is designed to operate on single supply.

Table 1 Spply Voltage

Item

Power Supply Range

Single Supply

10V to 15V

Note: The lower limit of supply voltage depends on the line output reference level.

The minimum value of the overload margin is specified as 12dB by Dolby Laboratories.

Reference Voltage

For this IC, the reference voltage (VCC/2) occurrence device is built-in as AC grand. A capacitor for a

ripple filter is greatly small characteristic with 1/100 compared with conventional device.

And, the reference voltage are provided for the left channel and the right channel separately.

The block diagram is shown as figure 1.

22 23 VCC

+

–

VCC

+

–

+

–

50 51 49

GND

+PIR

1µ

L channel Reference voltage

Music sensor Reference voltage

R channel Reference voltage

Unit C : F

Figure 1 Reference Voltage

Rev.2, Jun. 1999, page 8 of 49

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