HA12212F データシートの表示（PDF） - Hitachi -> Renesas Electronics

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HA12212F

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

Hitachi -> Renesas Electronics 

HA12192F/HA12197F/HA12212F Series

Operating Mode Control

HA12192F series and HA12197F series provides fully electronic switching circuits. And each operating

mode control are controlled by parallel data (DC voltage).

Table 2 Threshold Voltage (VTH)

Pin No.

7*1, 8, 9

Lo

Hi

Unit

–0.2 to 1.0

3.5 to 5.3

V

Test Condition

Input Pin

Measure

V

Table 3 Switching Truth Table

Pin No.

Lo

7*1

NR-OFF

8

120µ (NORMAL)

9

FORWARD

*1. Non connection regarding HA12197F series.

Hi

NR-ON

70µ (MATAL or CHROME)

REVERSE

Note:

1. Each pins are on pulled down with 100kΩ 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: 5.3V, Low: –0.2V)

3. Reducing pop noise is so much better for 10kΩ to 22kΩ resistor and 1µF to 22µF capacitor

shown figure 2.

Input Pin 10 to 22kΩ

+

1 to 22µF

MPU

Figure 2 Interface for Reduction of Pop Noise

Rev.5, Jun. 1999, page 11 of 89

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