PJ34119 Promax-Johnton, PJ34119 Datasheet
PJ34119
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PJ34119 Summary of contents
Page 1
... RECOMMENDED OPERATING CONDITIONS T he PJ34119 is a low power audio amplifier intergrated circuit intended （primarily）for telephone applications， such as in speakerphones. It provides differential speaker outputs to maximize output swing at low supply coltages(2.0V minimum). Coupling capacitors to the speaker are not required. Open loop gain is 80dB , and the closed loop gain is set with two external resistors ...
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... A Symbol Ri AVOL1 AV2 GBW Pout3 Pout6 Pout12 THD PSRR GMT =75K) f Vo(3) Vo(6) Vo(12 ∆ FC1 R FC2 CC3 I CC16 I CCD 2-10 PJ34119 Low Power Audio Ampllfier Min Max +2.0 + 8.0 - ±200 - 0 46 -20 +70 Min Typ Max - > -0.35 0 +0. 250 - - 400 - - - ...
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... L GENERAL The PJ34119 is a low power audio amplifier capable of low voltage operation (Vcc=2.0V minimum) such as that encountered in line-powered speakerphones. The circuit provides a differential output (Vo1-Vo2) to the speaker to maximize the available voltage swing at low voltages. The differential gain is set by two external resistors. Pins FC1 and FC2 allow controlling the amount of power supply and noise rejection, as well as providing alternate inputs to the amplifiers ...
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... The chip Disable (Pin 1) can be used to power down the IC to conserve power, or for muting, or both. When at a Logic “0” (0V to 0.8V), the PJ34119 is enabled for normal operation. When Pin Logic”1”(2.0V to Vcc V ), the IC is disabled. If Pin 1 is open, that is equivalent to Logic “0” although good design proactive dictates that an input should never be left open. Input impedance at Pin nominal 90 KΩ ...
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... FIGURE 5.POWER SUPPLY REJECTION versus FREQUENCY(C2=5.0µF) µ µ Low Power Audio Ampllfier FIGURE 2.AMPLIFIER #1 OPEN LOOP GAIN AND PHASE FIGURE 4.POWER SUPPLY REJECTION versus FREQUENCY(C2=10µF) µ µ FIGURE 6.Power SUPPLY REJECTION versus FREQUENCY(C2=1.0µF) µ µ µ 5-10 PJ34119 2003/10.ver.A ...
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... FIGURE 11.DISTORTION versus POWER (f=1.0KHz, AVD=34dB) Ω Ω Ω Ω Low Power Audio Ampllfier FIGURE 8.DEVICE DISSIPATION, 8.0Ω LOAD FIGURE 10.DEVIECE DISSIPATION, 32Ω LOAD FIGURE 12.DISTORTION versus POWER Ω Ω 6-10 PJ34119 120 (f=3.0KHz,AVD=34dB) Ω Ω Ω Ω Ω 150 Ω ...
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... FIGURE 15.POWER SUPPLY CURRENT 0 2.0 4.0 6.0 8 FIGURE 17.LARGE SIGNAL RESPONSE µ Low Power Audio Ampllfier FIGURE 14.MAXIMUM ALLOWABLE LOAD POWER Ω 0 FIGURE 16.SMALL SIGNAL RESPONSE 14 16 FIGURE 18.V 7-10 PJ34119 Ω Ω Ω 2.0 4.0 6.0 8 µ versus LOAD CC OH ...
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... FIGURE 19 versus LOAD CURRENT FIGURE 21.FREQUENCY RESPONSE OF FIGURE 22 FIGURE 22.AUDIO AM[LIFIER WITH HIGH INPUT IMPEDANCE µ Low Power Audio Ampllfier FIGURE 20.INPUT CHARACTERISTICE @ CD (PIN 1) 8-10 PJ34119 2003/10.ver.A ...
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... FIGURE 23.AUDIO AMPLIFIER WITH BASE SUPPRESSION µ FIGURE 24.AUDIO AMPLIFIER WITH BANDPASS µ 9-10 PJ34119 Low Power Audio Ampllfier 2003/10.ver.A ...
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... C 1.35 1.75 D 0.35 0.49 F 0.40 1.25 G 1.27BSC K 0.10 0.25 M 0° 7° P 5.80 6.20 R 0.25 0.50 10-10 PJ34119 INCHES MIN MAX 0.357 0.367 0.245 0.255 0.125 0.135 0.019 0.020 0.10BSC 0.011 0.012 0.128 0.132 0.305 0.315 - 10° INCHES MIN MAX 0.189 ...