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Part: HA12207NT
Category:
Analog & Mixed-Signal Processing
-> Amplifiers
-> Audio/Power Amplifiers
Description: Audio Signal Processor For Cassette Deck
Company: Hitachi Semiconductor (acquired by Renesas)
Datasheet: Download HA12207NT datasheet File size : 423 kB
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Datasheet text preview:
HA12207NT
Audio Signal Processor for Cassette Deck
ADE-207-197B (Z) 3rd Edition Jun. 1999 Description
HA12207NT is silicon monolithic bipolar IC providing PB equalizer, REC equalizer system and each electronic control switch in one chip.
Functions
· PB equalizer · REC equalizer · REC MUTE · REC head return switch × 2 channel × 2 channel
· Each electronic control switch to change REC/PB etc.
Features
· REC equalizer is very small number of external parts, built-in 2 types of frequency characteristics. · PB equalizer circuit built-in. · REC /PB of high speed mode are possible with TYPE 1(Normal tape). · Controllable from direct micro-computer output. · Available to reduce substrate-area because of high integration and small external parts. · As the pins arrangement resembles HA12185NT, it can design the board that is replaced with HA1 2 1 8 5 NT .
HA12207NT
Pin Description, Equivalent Circuit (VCC = 10.5V, Vref = 5.6V, Ta = 25°C, No signal, The value in the table show typical value.)
Pin No. 1 2 Pin Name VCC RECOUT (L) Note V = VCC V = Vref
VCC
Equivalent Circuit
Pin Description VCC pin REC-EQ output
GND
3 4
RECOUT (R) REC-RETURN V = Vref V '= Vref
VC C I
REC return
V 5 pin, 6 pin
4
V'
I GND
5 6 7
PB-IN B (L) PB-IN B (R) VREF V = Vref V' = VCC / 2
PB B Deck input
Reference
+ PB-IN 10k V 10k GND V' VCC
8
PB-IN A (L)
V = Vref
VCC
PB A deck input
V
9
PB-IN A (R)
Rev.3, Jun. 1999, page 2 of 27
HA12207NT
Pin Description, Equivalent Circuit (VCC = 10.5V, Vref = 5.6V, Ta = 25°C, No signal, The value in the table show typical value.)
Pin No. 10 Pin Name PB-NF (L) Note PB-IN = Vref Equivalent Circuit
VCC
Pin Description PB EQ feed back
PB-IN
180 7
330k
11 12
PB-NF (R) PB-EQ (L) PBOUT = Vref
PBOUT
NAB output
GND
13 20
PB-EQ (R) REC IN (R) V = Vref
VCC
REC-EQ input
V 100k Vref 7
21 14
REC IN (L) PBOUT (R) V = Vref
VCC
PB output
GND
15
PBOUT (L)
Rev.3, Jun. 1999, page 3 of 27
Others parts begin by ha
HA-1 HA-2 HA-3 HA-4 HA-5 HA-6 HA-7 HA-8 HA-9 HA-10
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