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PDF HA12231FP Data sheet ( Hoja de datos )
| Número de pieza | HA12231FP | |
| Descripción | Audio Signal Processor for Car Deck (PB 1 Chip) | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HA12231FP
Audio Signal Processor for Car Deck (PB 1 Chip)
ADE-207-327A (Z)
2nd Edition
Jan. 2001
Description
HA12231FP is silicon monolithic bipolar IC providing PB equalizer system and music sensor system in
one chip.
Functions
• PB equalizer × 2 channel
• Music sensor × 1 channel
• Line amp. × 2 channel
• Line mute × 2 channel
Features
• No use external parts for PB equalizer. (Fixed characteristics built-in)
• Available to change music sensing level by external resistor.
• Available to change frequency response of music sensor by external capacitor.
• Different type of PB equalizer characteristics selection (120 µs/70 µs) is available.
• Line mute ON/OFF is avalable.
• This IC is strong for a cellular phone noise.
Ordering Information
Product
HA12231FP
Package
FP-20DA
PBOUT-Level
450 mVrms
Functions
PB-EQ
r
Music Sensor
r
Mute
r
1 page  
Absolute Maximum Ratings (Ta = 25°C)
Item
Supply voltage
Power dissipation
Operating temperature
Storage temperature
Symbol
VCC Max
Pd
Topr
Tstg
Rating
15
400
−40 to +85
−55 to +125
Unit
V
mW
°C
°C
HA12231FP
Note
Ta ≤ 85°C
5
5 Page 
HA12231FP
The Sensitivity Adjustment of Music Sensor
Adjusting MS Amp. gain by external resistor, the sensitivity of music sensor can set up. The music sensor
block diagram is shown in figure 4, and frequency response is shown in figure 5.
S/R
16 TAI(L)
23.5dB
−6dB
VCC
REX2
CEX2
REX1
+CEX1
R1
330kΩ
+ C1
0.33µF
DVCC
7
MS Gv
13
MS DET
LPF
25kHz
90kΩ 33.3kΩ
− −3.5dB
+
MS Amp.
RECT
66.7kΩ
MS
12
GND
20
RL
Micro
computer
23.5dB
TAI(R)
5
Figure 4 Music Sensor Block Diagram
GV2
f3
Repeat mode (REP)
f4
GV1
f1 f2
Search mode (SER)
10 100 1k 10k 25k 100k
f (Hz)
Figure 5 Frequency Response
11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet HA12231FP.PDF ] | |
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