Description
The CXA1599Q is an IC for audio cassette decks.
All analog signal processing functions, except Dolby
NR, are incorporated in a single chip. As a result, a
double cassette deck system can be simply
configured by adding a Dolby IC.
Features
Electronic recording volume for setting recording
level (with a balance volume)
Recording equalizer amplifier
(with calibration and low frequency boost
functions)
Recording mute function
(soft mute and fader possible)
Playback head amplifier switch function
(deck A/B switch)
NR pass amplifier (NR IN/PASS switch)
Headphone amplifier with electronic volume
Full-wave rectifier output amplifier for level meter
(with time constant function)
HPF amplifier for AMS
(with BS/AMS gain switch function)
Electronic switch for tape EQ selection
(120s/70s)
Electronic switch for metal tape selection
Electronic switch for normal/double speed dubbing
selection (only for recording equalizer)
Line mute function
Double cassette dubbing system can be easily
configured with this single IC.
Applications
Analog signal processing (except Dolby NR) for
stereo analog cassette deck
(ALPS ELECTRIC CO., LTD. HADKH-55460 head
applicable)
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25C)
Supply voltage
V
CC
17
V
Operating temperature
Topr 20 to +75 C
Storage temperature
Tstg 65 to +150 C
Allowable power dissipation
P
D
735
mW
Operating Conditions
Supply voltage
V
CC
5.0 to 8.0 V
(positive/negative dual power supply)
10.0 to 16.0 V
(single power supply)
1
CXA1599Q
E92Y05-ST
1-chip Cassette Deck
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
48 pin QFP (Plastic)
For the availability of this product, please contact the sales office.
3
CXA1599Q
Pin Description
(Ta = 25C, Vcc = 7V, V
EE
= 7V, DVcc = 5V, No signal)
36
1
4.8K
34k
5.5k
500
500
2
V
EE
V
CC
V
CC
V
EE
4
VGS
54k
V
EE
V
CC
V
CC
V
EE
DREF
4
Calibration for high
frequency gain of
recording equalizer
amplifier.
Controls by applying
the DC voltage of
DGND to DVcc.
High
Gain up
Low
Gain down
When high frequency
calibration function is
not used, keep pin
open.
Output of recording
equalizer amplifier.
Connects the external
capacitor for low
frequency boost of
recording equalizer
amplifier.
When low frequency
boost is not executed:
During positive/
negative dual power
supply
Connect to GND.
During single power
supply
Connect a
capacitor
(over 3.3F).
200
200
V
EE
V
CC
V
CC
V
EE
8
50k
5P
2
3
3
3
Pin
No.
Symbol
DC
voltage
I/O
I/O
resistance
1
36
BOOST1
BOOST2
0.0V
--
9.5k
2
3
REC
OUT1
REC
OUT2
0.0V
O
0
4
GP CAL
2.5V
(During
OPEN)
I
54k
Equivalent circuit
Description
4
CXA1599Q
54k
V
EE
V
CC
V
CC
V
EE
DREF
3
5
40k
V
CC
V
CC
V
EE
DGND
10
33
V
EE
8
60k
Pin 10: Control for
headphone volume
Pin 33: Control for
recording volume
Controls by applying
the DC voltage of
DGND to DVcc for
each pin.
High
Volume up
Low
Volume down
Input of playback
equalizer amplifier.
Calibration for overall
frequency gain of
recording equalizer
amplifier.
Controls by applying the
DC voltage of DGND to
DVcc.
High
Gain up
Low
Gain down
When recording
calibration function is
not used, keep this pin
open.
50k
V
EE
V
CC
V
CC
V
EE
VGS
6
7
8
9
38
37
47
48
VGS
Pin
No.
Symbol
DC
voltage
I/O
I/O
resistance
5
REC
CAL
2.5V
(During
OPEN)
I
54k
6
7
8
9
PB INB1
PB INB2
PB INA1
PB INA2
Input of recording
equalizer amplifier.
37
48
REC IN2
REC IN1
0.0V
I
50k
Input pin for connecting
Dolby line (decode)
output signal.
38
47
NR IN2
NR IN1
10
33
HP
VOL
REC
VOL
0.0V
(During
OPEN)
I
100k
Equivalent circuit
Description
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