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PDF HA12169FB Data sheet ( Hoja de datos )
| Número de pieza | HA12169FB | |
| Descripción | Audio Signal Processor for Cassette Deck (Deck 1 Chip) | |
| Fabricantes | Hitachi Semiconductor | |
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HA12167FB/HA12169FB
Audio Signal Processor for Cassette Deck (Deck 1 Chip)
ADE-207-110B (Z)
3rd. Edition
June 1997
Description
HA12167FB/HA12169FB is silicon monolithic bipolar IC providing REC volume system, Level meter
system and Dolby noise reduction system in one chip.
Functions
• REC equalizer
• Equalizer volume
• Dolby B/C NR
• REC/PB input electronic volume
• Level Meter
• DAC for adjusting bias
× 2 channel
× 2 channel
× 2 channel
× 2 channel
× 2 channel
× 2 channel
Features
• Available to create characteristics of REC equalizer by changing external resistor, no coil
• Equalizer volume is available to calibrate recording automatically with micro-controller
• Electronic volume built-in is available to set the level of recording and play back automatically with
micro-controller
• 4 types of input (3 out of 4 are by way of electronic volume)
• Input electronic control switching is irrelevant to REC/PB electronic control switching
• Dolby noise reduction system is available with double cassette decks (Unprocessed signal output
available from recording out terminals during PB mode)
• Log-compressed level meter output is range from 0 V to 5 V (Usable as music search switchable gain of
0 dB and 20 dB respectively)
• Normal-speed/high-speed, normal/metal/chrome fully electronic control switching built-in
• NR-ON/OFF, Dolby B/C, MPX ON/OFF fully electronic control switching built-in
• Reduction of the number of pins by transfered serial data to electronic volume control switching and
another control switching (Controllable from micro-controller directly)
• Small the number of external parts
1 page  
HA12167FB/HA12169FB
Pin Description (VCC = 14 V, Ta = 25°C, No signal, The value in the show typical value.)
(Cont)
Pin No. Terminal
(QFP-80) Name
64 BIAS
Zin
—
DC Voltage Equivalent Circuit
0.28 V
Description
Dolby NR
reference current
input
14 IREF
— 1.2 V
GND
EQ reference
current input
27 MF
26 fQ
25 f/Q
24 GH
23 GL
22 GP
35
BIAS ADJ (N) —
1.2 V
36 BIAS ADJ (M)
37 BIAS ADJ (C)
21 HM
——
20 HC
19 HN
18 NM
17 NC
16 NN
EQ parameter
current input
GND
Bias DAC
parameter current
input
EQ parameter
selector
Rev.3, Jun. 1997, page 5 of 73
5 Page 
HA12167FB/HA12169FB
Electrical Characteristics (Ta = 25°C, VCC = 14 V, Dolby Level 300 mVrms at
RECOUT) (Cont)
High
Low
HA12169
HA12167
Rev.3, Jun. 1997, page 11 of 73
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet HA12169FB.PDF ] | |
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