CXA1352AS Sony, CXA1352AS Datasheet

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CXA1352AS

Manufacturer Part Number
CXA1352AS
Description
2-channel 5 Elements Graphic Equalizer IC
Manufacturer
Sony
Datasheet

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CXA1352AS
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CXA1352AS
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Block Diagram and Pin Configuration
Description
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
radio, mobile stereo and portable stereo
Structure
The CXA1352AS is a bipolar IC for graphic
Graphic equalizer for cassette tape recorder with
Bipolar silicon monolithic IC
2-channel 5 Elements Graphic Equalizer IC
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.
22
1
CONTROL
21
2
20
3
19
4
18
5
—1—
14dB
14dB
17
6
GRAPHIC EQUALIZER
GRAPHIC EQUALIZER
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
• Storage temperature
• Allowable power dissipation
Operating Conditions
• Supply voltage
• Operating temperature
16
7
CXA1352AS
29dB
29dB
15
8
22 pin SDIP (Plastic)
14
9
13
10
VOLUME
VOLUME
BIAS
DV
Topr
Tstg
V
V
P
CC
CC
12
11
D
CC
–65 to +150
4.0 to 10.0
–20 to +75
3.5 to V
1200
12
E91912B95-TE
CC
mW
°C
°C
V
V
V

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CXA1352AS Summary of contents

Page 1

... Elements Graphic Equalizer IC 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 • ...

Page 2

... GND 30k 147 5 18 GND V CC 147 6 50k 17 5k 50k GND 7 —2— CXA1352AS Description Graphic equalizer control V CC pin DC input Volume control pin DC input GND Balance control pin DC input V CC Connects the DC feedback capacitor of the LPF used in the 100 Hz graphic equalizer ...

Page 3

... GND V CC 250 147 20k 10 13 250 GND V CC 300 147 11 GND —3— CXA1352AS Description Line output pin Fix output pin Electronic volume output pin Reference current setting pin (for graphic equalizer) Normally 160 k resistor is connected ...

Page 4

... Pin I/O Symbol Voltage No. resistance Equivalent circuit V CC 40k 147 300 12 300 40k GND 30k 30k 42k GND —4— CXA1352AS Description Signal reference voltage pin A capacitor is connected for ripple rejection Power supply pin (operation) Power supply pin (control) ...

Page 5

... 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 Graphic equalizer ALL FLAT, Volume MAX, “A” WTG filter Graphic equalizer ALL FLAT, Volume MAX —5— CXA1352AS (Ta=25 ° Min. Typ. Max. Unit 4.0 — ...

Page 6

... VG ISET OUT2 OUT1 OUT2 F OUT1 F OUT2 L OUT1 GND IN2 IN1 DC2 DC1 CC DV VOL 10kHz BAL 4kHz 100Hz 1kHz 400Hz —6— CXA1352AS ...

Page 7

... VG ISET OUT2 OUT1 OUT2 F OUT1 F OUT2 L OUT1 L GND V CC IN2 IN1 DC2 DC1 CC DV VOL 10kHz BAL 4kHz 100Hz 400Hz 1kHz —7— CXA1352AS ...

Page 8

... Defining fo, o and Q as for cut, we can obtain the frequency characteristics at boost. OPERATIONAL AMPLIFIER CUT BOOST ( Fig (“f ” is resonance frequency determined by Z (s) (formed LCR).) The and state of graphic equalizer becomes maximum boost LCs + (R+Ro) Cs+1 LCs 2 +RCs+1 —8— CXA1352AS state of graphic V we can obtain the frequency characteristics at cut. ” O ...

Page 9

... Fig. 2. Indicates frequency characteristics at boost and cut. Response (dB) 0dB • CXA1352AS system H(s The structure of the graphic equalizer used in this IC is shown on Fig. 3. This circuit performs boost and cut controlled by 2 transconductance amplifiers that can vary the conversion coefficient through control currents Ib, and Ic around o. (“ ...

Page 10

... The structure of the actual graphic equalizer, including BPF, is shown on Fig Gm2 C2 GND GND 1 o • Gm1 • • (1+R • Gm) • o • (1+R • Gm) • • • 30k C3 Gm1 Gm3 C1 I CUT GND Fig. 4 —10— CXA1352AS SUM 30k Gm4 I BOOST GND GND ...

Page 11

... The operation is explained as follows. As VOL drops below the center, the 100 Hz and 10 kHz graphic equalizer part Ib (See Fig. 3.) gradually increases even if the graphic equalizer control pin (100 Hz and 10 kHz) is flat, boost applies and as a result loudness effect is obtained. (control power supply, independent from V CC —11— CXA1352AS ) CC voltage. CC ...

Page 12

... By reducing the resistor value the shift moves to the high band and by increasing the value the shift moves to the low band. However, 5 elements cannot be shifted independently. but supply voltage should be CC GRAPHIC EQUALIZER GEBPF+GEHPF+ GELPF+SUM AMP Fig. 5. —12— CXA1352AS F OUT –20dBm VOLUME OUT –20dBm (VARIABLE) L OUT –5dBm ...

Page 13

... ALL FLAT –4 50 100 200 Frequency characterlstlcs ALL BOOST ALL FLAT BOOST CUT ALL CUT 500 10k FREQUENCY(Hz) Loudness characteristics 500 10k FREQUENCY(Hz) —13— CXA1352AS V = =5V CC 0dB=–20dBm, 1kHz VOL : MAX 20k VOL=0.0V 1.0V 1.5V 2.0V 2.5V 5.0V 20k ...

Page 14

... OUT pin output level (dB) THD-F OUT characteristics (ALL FLAT) V =8V 0dB=–20dBm, VOL : MAX 10.0 5.0 2.0 1.0 0.5 10kHz 0.2 1kHz 0.1 0. FIX OUT pin output level (dB) —14— CXA1352AS 100Hz 10kHz 20 100Hz 20 30 ...

Page 15

... THD-F OUT characteristics (ALL CUT) V =8V 0dB=–20dBm, VOL : MAX 10.0 5.0 2.0 1kHz 1.0 0.5 0.2 0.1 0. FIX OUT pin output level (dB) Output voltage vs. Control voltage (VOL) 0 –20 –40 –60 –80 0.1 0.2 Control voltage (V) —15— CXA1352AS 10kHz 100Hz = = =–14dBm,1kHz IN ALL FLAT 0 ...

Page 16

... Output voltage vs. Control voltage (VOL) 0 –20 –40 –60 – =–14dBm, 1kHz IN ALL FLAT –100 0 1.0 2.0 3.0 4.0 Control voltage (V) Output voltage vs. Control voltage (VOL) 100 5.0 0 1.0 Control voltage (V) —16— CXA1352AS =–14dBm, 1kHz IN 100%=0dBm ALLFLAT 2.0 3.0 4.0 5.0 ...

Page 17

... SDIP (PLASTIC 1.778 Two kinds of package surface: 1.All mat surface type. + 0.15 2.All mirror surface type. PACKAGE STRUCTURE MOLDING COMPOUND SDIP-22P-01 LEAD TREATMENT SDIP022-P-0300 LEAD MATERIAL PACKAGE MASS —17— CXA1352AS 0° to 15° EPOXY RESIN SOLDER PLATING COPPER ALLOY 0.95g ...

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