Sony CXA1352AS Datasheet
—1—
E91912B95-TE
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.
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage VCC 12 V
• Storage temperature Tstg –65 to +150 °C
• Allowable power dissipation
PD 1200 mW
Operating Conditions
• Supply voltage VCC 4.0 to 10.0 V
DVCC 3.5 to VCC V
• Operating temperature Topr –20 to +75 °C
Description
The CXA1352AS is a bipolar IC for graphic
equalizer use. All controls are DC performed while
the addition of single-potentiometers easily
composes a 2-channel graphic equalizer.
Features
• Microcomputer control possible
• Built-in electronic volume
• Built-in pseudo loudness function
• Built-in balance function
• Each channel corresponds to 5 elements
• 2 channels of FIX OUT and LINE OUT pins
Applications
Graphic equalizer for cassette tape recorder with
radio, mobile stereo and portable stereo
Structure
Bipolar silicon monolithic IC
2-channel 5 Elements Graphic Equalizer IC
22 pin SDIP (Plastic)
Block Diagram and Pin Configuration
1 2
3 4 5 6 7 8 9 10
11
1213141516171819202122
GRAPHIC EQUALIZER
GRAPHIC EQUALIZER
BIAS
VOLUME
VOLUME
CONTROL
14dB
14dB
29dB
29dB
1kHz
400Hz
100Hz
BAL
VOL
DC1
1N1
GND
LINE
OUT1
OUT1
(Fix)
OUT1
(VARIABLE)
4kHz
10kHz
DC2
IN2
VG
LINE
OUT2
OUT2
(FIX)
OUT2
(VARIABLE)
DV
CC
VCC
ISET
CXA1352AS
—2—
CXA1352AS
Pin Description
Pin
Symbol Voltage
I/O
Equivalent circuit Description
No. resistance
1
2
20
21
22
4
3
5
18
6
17
7
400 Hz
100 Hz
10 kHz
4 kHz
1 kHz
VOL
BAL
DC1
DC2
IN1
IN2
GND
DVCC
2
DVCC
2
VCC
2
VCC
2
GND
60 kΩ
60 kΩ
—
25 kΩ
1
2
4
20
21
22
DVCC
VCC
10k
147 40k
20k
GND
DVCC
VCC
9k
147 40k
20k
GND
3
18
VCC
147
30k
GND
5
6
17
VCC
147
50k
50k 1k5k
GND
7
Graphic equalizer control
pin
DC input
Volume control pin
DC input
Balance control pin
DC input
Connects the DC
feedback capacitor of the
LPF used in the 100 Hz
graphic equalizer
Signal input pin
GND pin
—3—
CXA1352AS
Pin
Symbol Voltage
I/O
Equivalent circuit Description
No. resistance
8
15
9
14
10
13
11
L OUT1
L OUT2
F OUT1
F OUT2
OUT1
OUT2
ISET
VCC
2
VCC
2
VCC
2
1.3 V
0
0
0
0
VCC
147 27k
300
300
GND
8
15
14
VCC
147 30k
300
300
GND
9
13
VCC
147 20k
250
250
GND
10
VCC
147
300
GND
11
Line output pin
Fix output pin
Electronic volume output
pin
Reference current setting
pin
(for graphic equalizer)
Normally 160 kΩ resistor
is connected
—4—
CXA1352AS
Pin
Symbol Voltage
I/O
Equivalent circuit Description
No. resistance
12
16
19
VG
VCC
DVCC
VCC
2
VCC
DVCC
20 kΩ
60 kΩ
VCC
147
40k
40k
300
GND
12
300
VCC
16
VCC
DVCC
GND
19
30k
30k
42k
Signal reference voltage
pin
A capacitor is connected
for ripple rejection
Power supply pin
(operation)
Power supply pin (control)
—5—
CXA1352AS
Electrical Characteristics (Ta=25 °C, VCC=8 V, DVCC=5 V)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Item
Supply voltage
(operation)
Supply voltage
(control)
Current consumption
Reference input level
Reference output level
Reference LINE
output level
Reference FIX
output level
Graphic equalizer
setting frequency (1)
Graphic equalizer
setting frequency (2)
Graphic equalizer
setting frequency (3)
Graphic equalizer
setting frequency (4)
Graphic equalizer
setting frequency (5)
Graphic equalizer
frequency deviation
Maximum boost (1)
Maximum boost (2)
Maximum cut (1)
Maximum cut (2)
Total harmonic
distortion
Volume attenuation (1)
Volume attenuation (2)
Balance adjustment (1)
Balance adjustment (2)
Noise level
Output offset voltage
Symbol
VCC
DVCC
ICC
VIN
VOUT
VLINE
VFIX
GEQ1
GEQ2
GEQ3
GEQ4
GEQ5
∆ EQ
GEQB1
GEQB2
GEQC1
GEQC2
THD
VOL1
VOL2
BAL1
BAL2
VNOIS
VOFF
Test conditions
Graphic equalizer ALL FLAT,
Volume MID
Graphic equalizer ALL FLAT,
Volume MAX, f=1 kHz
f=1 kHz
Graphic equalizer ALL FLAT,
f=1 kHz
LPF cut off frequency (–3 dB)
BPF (1) central frequency
BPF (2) central frequency
BPF (3) central frequency
HPF cut off frequency (–3 dB)
Cut off frequency and central
frequency deviation
f=400 Hz, 1 kHz, 4 kHz
maximum boost
f=100 Hz, 10 kHz maximum boost
f=400 Hz, 1 kHz, 4kHz
maximum cut
f=100 Hz, 10 kHz maximum cut
RL=2 kΩ, Graphic equalizer
ALL FLAT, Volume MAX, f=1 kHz,
Reference +10 dB is input
Graphic equalizer ALL FLAT,
Volume MAX, f=1 kHz
Graphic equalizer ALL FLAT,
Volume MIN, f=1 kHz
Graphic equalizer ALL FLAT,
BAL=MAX,Volume MAX, f=1kHz
Graphic equalizer ALL FLAT,
BAL=MIN, Volume MAX, f=1kHz
Rg=5 kΩ, Graphic equalizer ALL
FLAT, Volume MAX, “A” WTG filter
Graphic equalizer ALL FLAT,
Volume MAX
Min. Typ. Max. Unit
4.0 — 10.0 V
3.5 — VCC V
8.0 12.0 16.0 mA
— –34.0 — dBm
–23.0 –20.0 –17.0 dBm
–6.5 –4.5 –2.5 dBm
–23.0 –20.0 –17.0 dBm
— 200 — Hz
— 400 — Hz
— 1.0 — kHz
— 4.0 — kHz
— 8.0 — kHz
–20 0 20 %
9.0 11.2 14.0 dB
8.0 10.7 14.0 dB
–13.0 –10.7 –8.5 dB
–12.0 –9.5 –7.0 dB
— 0.25 1.0 %
–1.5 0 1.5 dB
— –94.4 –80.0 dB
— 0 — dB
— –66 — dB
— –93.1 –88.0 dB
3.5 4.0 4.5 V
—6—
CXA1352AS
Electrical Characteristics Test Circuit
1 2 3 4 5 6 7 9 10
11
1213141617181920
21
22
GND
POWER
SUPPLY
POWER
SUPPLY
DC
VOLTMETER
S10
S16
S20
S15
S14
S9
S8
S4
R20
2k
R16
20k
R14
20k
R12
5.1k
R10
39k
R19
20k
1kHz BPF
S19
S18
DIN AUDIO
“A” WTG
NOISE FILTER
OUT
S17
IN
FILTER
S13
S12
S11
AC
VOLTMETER
DISTORTION
ANALYZER
OSCILLO
–SCOPE
NOTE
1. RESISTOR TOLERANCE
2. CAPACITOR TOLERANCE
COUPLING CAPACITPR
∗±5%
±1%
∗±5%
±2%
±10%
R21
2k
R18
20k
R17
160k
R15
20k
R13
20k
S3
S7
S6
S5
C18
4.7µ/25V
C19
4.7µ/25V
C16
4.7µ/25V
C11
4.7µ/
25V
C17
4.7µ/25V
C14
4.7µ/25V
C15
4.7µ/25V
8
15
∗
C20
47µ/
25V
∗
C13
100µ/
25V
∗
C10
4.7µ/
25V
∗
C8
100µ/
25V
∗
C6
1000p
∗
C4
1000p
∗
C2
1000p
∗
C1
1000p
∗
C3
1000p
∗
C5
1000p
∗
C7
1000p
∗
C9
4.7µ/
25V
C12
4.7µ/
25V
A
S2
BOOST CUT
BOOST CUT
BOOST CUT
BOOST CUT
BOOST CUT
CH2 CH1
MAX MIN
R7
50k
R6
50k
R5
50k
R4
50k
R3
50k
R2
50k
R1
50k
R8
620
AUDIO
SG
R9
39k
R11
5.1k
S1
CXA1352AS
400Hz
100Hz
BAL
VOL
1kHz
4kHz
10kHz
DV
CC
DC1
IN1
GND
L OUT1
F OUT1
OUT1
ISET
DC2
IN2
V
CC
L OUT2
F OUT2
OUT2
VG
Loading...