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參數(shù)資料
| 型號： | HA12230NT |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Audio Signal Processor for Cassette Deck |
| 中文描述： | 音頻信號處理器卡座 |
| 文件頁數(shù)： | 9/32頁 |
| 文件大?。?/td> | 226K |
| 代理商： | HA12230NT |
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HA12230NT
Rev.6, Nov. 2000, page 9 of 32
Level Diagram
The gain establishment of PB-EQ considers PB output level {(internal Line Amp. + PB Amp.) = 580 mV
(Dolby Level)} like figure 3 at the target.
After replace RA and RB with a half-fix volume, adjust level.
Regarding REC-EQ adjust the gain in front of input to this IC.
The level diagram of 1 kHz is shown figure 3.
Similarly to PB, it consider Dolby level as a standard. And R1 needs the value more than 5.6 k
.
Because mode establishment resistances are built-in, REC-EQ frequency characteristics are respectively
fixed value.
In case the change of the frequency characteristics are necessary, please inquire the responsible agent
because the adjustment of resistors is necessary.
PB-EQ
41.2 dB
Line Amp.
25.7 dB
0.6 mV
68 mV
580 mV
30 mV
RA
RB
Figure 3 PB System Level Diagram
Line Mute
HA12230NT is built-in with mute circuit to Line Amp.
A mute control does with High/Low of pin 19.
Reducing pop noise is so much better 10 k
to 22 k
resistor to pin 19 in series and 1
μ
F to 22
μ
F
capacitor.
A mute is not built-in when doing a power ON/OFF.
Please correspond to it, on the side of a set system.
Test Mode
Test mode becomes if it is resistor less than 10 k
of pin 12.
Please use resistor of 22 k
on the occasion of mount.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HA12231 | Audio Signal Processor for Car Deck (PB 1 Chip) |
| HA12231FP | Audio Signal Processor for Car Deck (PB 1 Chip) |
| HA12232 | Audio Signal Pre-Amp. for Car Deck |
| HA12232FP | Audio Signal Pre-Amp. for Car Deck |
| HA12413 | 150000 SYSTEM GATE 1.8 VOLT FPGA - NOT RECOMMENDED for NEW DESIGN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA12231 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Car Deck (PB 1 Chip) |
| HA12231FP | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Car Deck (PB 1 Chip) |
| HA12232 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Pre-Amp. for Car Deck |
| HA12232FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Audio Signal Pre-Amp. for Car Deck |
| HA12237F | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Audio Signal Processor for Cassette Deck |
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