CXA1352AS Sony, CXA1352AS Datasheet
CXA1352AS
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CXA1352AS Summary of contents
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... 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 • ...
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... 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 ...
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... 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 ...
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... 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) ...
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... 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 — ...
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... 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 ...
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... 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 ...
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... 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 ...
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... 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. (“ ...
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... 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 ...
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... 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 ...
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... 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 ...
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... 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 ...
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... 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 ...
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... 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 ...
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... 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 ...
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... 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 ...