apa4838 Anpec Electronics Corporation, apa4838 Datasheet

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... APA4838 is from 0dB (DC_Vol=0.8V –78dB (DC_Vol=0V) with 31 steps. Both of the depop circuitry and the thermal shutdown protection circuitry =5V are integrated in APA4838 , that reduces pops and DD clicks noise during power up or shutdown mode op- eration , and protects the chip from being destroyed by over temperature failure ...

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... APA4838 Ordering and Marking Information Block Diagram Mode Mute HP Sense DC_Vol Left Dock 20K 20K Left In Left Audio Input 0.33 F 200K Beep In 200K 0.33 F Right In Right Audio Input 20K Right Dock ...

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... ESD P Power Dissipation D Note: 1.APA4838 integrated internal thermal shutdown protection when junction temperature ramp up to 150°C 2.Human body model: C=100pF, R=1500 , 3 positives pulse plus 3 negative pulses 3.Machine model: C=200pF, L=0 positive pulses plus 3 negative pulses Recommended Operating Conditions Supply Voltage, V ...

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... C =2.2 F, f=1kHz =5V, P =1.1W Filter R =8 ,A-Wtd Filter 25°C A APA4838 Min. Typ. Max. 4.5 5 0.7 2.0 APA4838 Min. Typ. Max. ±0.5 -65 -78 -70 -70 = 25°C A APA4838 Typ. 5 2.3 2.0 1.2 1.5 0.07 0. ,A-Wtd www.anpec.com.tw Unit Unit dB dB Unit ...

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... V OUT RMS L P =75mW f=1kHz =100mV , f=120Hz, C RIPPLE RMS C =2 f=1kHz =75mW, R =32 , A-Wtd Filter =32 , A-Wtd Filter L Description 5 = 25°C A APA4838 Unit Typ 110 0.05 % 0. 102 www.anpec.com.tw ...

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... APA4838 Pin Description (Cont.) Pin I/O Name No Bypass 22 Bypass pin Right Gain 1 24 Connect pin 1 of the external gain setting resistor for right channel Right Gain 2 25 Connect pin 2 of the external gain setting resistor for right channel Right Out - 26 O Right channel negative output pin ...

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... APA4838 Typical Application Circuit V DD Internal gain select 100K HP Sense 100K 21 To Control Pin on Mode Headphone Jack 5 Mute Control 4 Mode 13 Left Dock 20K Left Audio Left In 20K Input 12 + 0.33 F 200K Beep 11 Beep In Detect 200K Right In Right 10 Audio + Input 0.33 F 20K 20K 9 Right Dock ...

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... APA4838 Application Information Volume Control Table Gain (dB) Voltage Range (% of Vdd) Low 0 77.5% -1 75.0% -2 72.5% -3 70.0% -4 67.5% -5 65.0% -6 62.5% -8 60.0% -10 57.5% -12 55.0% -14 52.5% -16 50.0% -18 47.5% -20 45.0% -22 42.5% -24 40.0% -26 37.5% -28 35.0% -30 32.5% -32 30.0% -34 27.5% -36 25.0% -38 22.5% -40 20.0% -42 17.5% -44 15.0% -46 12.5% -48 10.0% -50 7.5% -52 5.0% -78 0.0% Copyright ANPEC Electronics Corp. Rev. A.1 - Feb., 2003 High Recommended 100.00% 100.000% 78.5% 76.875% 76.25% 74.375% 73.75% 71.875% 71.25% 69.375% 68 ...

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... APA4838 Typical Characteristics THD+N vs. Frequency 10 VDD=5V RL=3 Po=1.8W BTL 1 Av=2 Av=4 Av=8 0.1 0.01 20 100 1k Frequency (Hz) THD+N vs. Frequency 10 VDD=5V RL=4 Po=1.5W BTL 1 Av=2 Av=4 Av=8 0.1 0.01 20 100 1k Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.1 - Apr., 2003 THD+N vs. Output Power 10 VDD=5V RL=3 Av=2 BTL 1 0.1 f=20Hz 0.01 20k 10m Output Power (W) THD+N vs. Output Power 10 VDD=5V RL=4 Av=2 BTL 1 f=20KHz 0.1 f=1KHz f=20Hz 0 ...

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... APA4838 Typical Characteristics (Cont.) THD+N vs. Frequency 10 VDD=5V RL=8 Po=1.0W BTL 1 Av=2 Av=4 Av=8 0.1 0.01 20 100 1k Frequency (Hz) THD+N vs. Frequency 10 VDD=5V RL=8 Po=250mW SE 1 Av=1 Av=2 Av=4 0.1 0.01 20 100 1k Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.1 - Apr., 2003 THD+N vs. Output Power 10 VDD=5V RL=8 Av=2 BTL 1 0.1 f=20Hz 0.01 10m 20k Output Power (W) THD+N vs. Output Power 10 VDD=5V RL=8 Av 0.1 0.01 20k ...

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... APA4838 Typical Characteristics (Cont.) THD+N vs. Frequency 10 VDD=5V RL=16 Po=150mW SE 1 Av=1 Av=2 0.1 Av=4 0.01 20 100 1k Frequency (Hz) THD+N vs. Frequency 10 VDD=5V RL=32 Po=75mW SE 1 Av=1 Av=2 Av=4 0.1 0.01 20 100 1k Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.1 - Apr., 2003 THD+N vs. Output Power 10 VDD=5V RL=16 Av 0.1 f=20Hz f=1KHz 0.01 20k 10m Output Power (W) THD+N vs. Output Power 10 VDD=5V RL=32 Av f=20KHz ...

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... APA4838 Typical Characteristics (Cont.) THD+N vs. Frequency 10 VDD=5V RL=10K Vo=1VRMS SE 1 Av=1 0.1 Av=2 Av=4 0.01 20 100 1k Frequency (Hz) Crosstalk vs. Frequency +0 VDD=5V RL=8 Po=1.0W -20 Av=2 BTL -40 -60 -80 R-ch to L-ch -100 L-ch to R-ch -120 20 100 1k Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.1 - Apr., 2003 THD+N vs. Output Swing 10 VDD=5V RL=10K Av 0.1 f=20Hz f=20KHz 0.01 100m 20k Output Swing (V Crosstalk vs ...

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... APA4838 Typical Characteristics (Cont.) Noise Floor vs. Frequency 100 No Filter A-Weight 10 VDD=5V RL=8 Av=2 BTL 1 20 100 1k Frequency (Hz) Supply Current vs. Supply Voltage BTL Supply Voltage (V) Copyright ANPEC Electronics Corp. Rev. A.1 - Apr., 2003 100 10 1 20k 20 Power Dissipation vs. Output Power 2 1 ...

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... APA4838 Typical Characteristics (Cont.) Power Dissipation vs. Output Power RL RL= RL= Output Power (W) Output Power vs. Supply Voltage THD+N=10% 1 THD+N= Supply Voltage (V) Copyright ANPEC Electronics Corp ...

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... APA4838 Typical Characteristics (Cont.) Output Power vs. Load Resistance 3 2.5 2 1.5 1 THD+N=10% 0.5 THD+N= Load Resistance ( ) PSRR vs. Frequency + VDD=5V Vin=100mVRMS RL=8 -20 Cbypass=2.2 F Av=2 BTL -40 Gain Adjustable -60 -80 Fixed Gain Mode -100 20 100 1k Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.1 - Apr., 2003 Output Power vs. Load Resistance ...

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... APA4838 Typical Characteristics (Cont.) Gain vs. Frequency +12 Cf=0.22 F +10 Cf=0 Cf=0.068 100 1k Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.1 - Apr., 2003 VDD=5V RL=8 Av=2V/V BTL 20k 16 www.anpec.com.tw ...

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... Four times the output power is possible as compared amplifier under the same conditions. A BTL -Out configuration, such as the one used in APA4838, also creates a second advantage over SE amplifiers. Since the differential outputs, +Right Out, -Right Out, RL +Out +Left Out, and -Left Out, are biased at half-supply, no need DC voltage exists across the load ...

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... APA4838 Application Descriptions (Cont.) Output SE/BTL Operation The ability of the APA4838 to easily switch between BTL and SE modes is one of its most important costs saving features. This feature eliminates the require- ment for an additional headphone amplifier in appli- cations where internal stereo speakers are driven in BTL mode but external headphone or speakers must be accommodated ...

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... Typical application employ a 5V regu- and the lator with 1.0 F and a 0.1 F bypass as supply filtering. This does not eliminate the need for bypassing the supply nodes of the APA4838. The selection of by- (4) pass capacitors, especially Cbypass, is thus depen- dent upon desired PSRR requirements, click and pop performance ...

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... Optimizing Depop Circuitry Circuitry has been included in the APA4838 to mini- mize the amount of popping noise at power-up and when coming out of shutdown mode. Popping oc- curs whenever a voltage step is applied to the speaker ...

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... When Beep In signal is greater than 1/2V , the PCBEEP mode is active. DD APA4838 will force to BTL mode and the internal fixed gain mode. The Beep In signal becomes the ampli- fier input signal and plays on the system speaker with- out coupling capacitor. Use input resistor between stereo input pin and Beep In to attenuate Beep In signal ...

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... Mode Function The APA4838’s Mode function has 2 states controlled by the voltage applied to the Mode pin. By applying 0V to the Mode pin, forces the APA4838 to fixed gain amplifier and internal volume control block will be dis- able and internal first amplifier output signal (Dock) to power amplifier directly ...

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... Volume Adjustable and Fixed Gain selection The APA4838 has an internal stereo volume control whose setting is a function of the DC voltage applied to the DC Vol control pin. The APA4838 volume con- trol consists of 31 steps that are individually selected by a variable DC voltage level on the DC Vol control pin ...

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... DD 50 C/W, respectively. Since the maximum junction temperature (T APA4838 is 150 C and the ambient temperature (T is defined by the power system design, the maximum power dissipation which the IC package is able to handle can be obtained from equation16. Once the power dissipation is greater than the maximum limit ...

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... APA4838 4 will go into thermal shutdown when driv- ing a 4 load. The thermal pad on the bottom of the APA4838 should be soldered down to a copper pad on the circuit board. Heat can be conducted away from the thermal pad through the copper plane to ambient ...

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... APA4838 Packaging Information eference egistration M O -153 EXPOSED THERMAL PAD ZONE (THERMALLY ENHANCED VARIATIONDS ONLY in 0. 0.80 b 0.19 6.4 (N =20PIN ) D 7.7 (N =24PIN ) 9.6 (N =28PIN ) 4 =20P 4 =24P ...

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... APA4838 Physical Specifications Terminal Material Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb) Lead Solderability Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3. Reflow Condition (IR/Convection or VPR Reflow) Reference JEDEC Standard J-STD-020A APRIL 1999 Pre-heat temperature Classification Reflow Profiles Average ramp-up rate(183 C to Peak) Preheat temperature 125 ± Temperature maintained above 183 C Time within actual peak temperature 10 – ...

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... APA4838 Reliability test program Test item SOLDERABILITY MIL-STD-883D-2003 HOLT MIL-STD-883D-1005.7 PCT JESD-22-B, A102 TST MIL-STD-883D-1011.9 ESD MIL-STD-883D-3015.7 Latch-Up JESD 78 Carrier Tape & Reel Dimensions Application 330 1 100 ref F D TSSOP- 28 7.5 0.1 1.5 +0.1 Copyright ANPEC Electronics Corp. Rev. A.1 - Apr., 2003 Method ...

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... APA4838 Cover Tape Dimensions Application Carrier Width TSSOP- 28 Customer Service Anpec Electronics Corp. Head Office : 5F, No. 2 Li-Hsin Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan ...