Philips Semiconductors Product specification Low voltage mono/stereo power amplifier TDA7050 CHARACTERISTICS VP = 3 V; f = 1 kHz; RL = 32 Ω; Tamb = 25 °C; unless otherwise specified PARAMETERSYMBOLMIN.TYP.MAX.UNITSupply Supply voltage VP 1,6 − 6,0 V Total quiescent current I − tot 3,2 4 mA Bridge-tied load application (BTL); see Fig.4 Output power; note 1 V − P = 3,0 V; dtot = 10% Po 140 − mW V − P = 4,5 V; dtot = 10% (RL = 64 Ω) Po 150 − mW Voltage gain G − v 32 − dB Noise output voltage (r.m.s. value) R − S = 5 kΩ; f = 1 kHz Vno(rms) 140 − µV R − S = 0 Ω; f = 500 kHz; B = 5 kHz Vno(rms) tbf − µV D.C. output offset voltage (at RS = 5 kΩ) |∆V| − − 70 mV Input impedance (at RS = ∞) |Zi| 1 − − MΩ Input bias current I − i 40 − nA Stereo application; see Fig.5 Output power; note 1 V − P = 3,0 V; dtot = 10% Po 35 − mW V − P = 4,5 V; dtot = 10% Po 75 − mW Voltage gain Gv 24.5 26 27.5 dB Noise output voltage (r.m.s. value) R − S = 5 kΩ; f = 1 kHz Vno(rms) 100 − µV R − S = 0 Ω; f = 500 kHz; B = 5 kHz Vno(rms) tbf − µV Channel separation RS = 0 Ω; f = 1 kHz α 30 40 − dB Input impedance (at RS = ∞) |Zi| 2 − − MΩ Input bias current I − i 20 − nA Note 1. Output power is measured directly at the output pins of the IC. It is shown as a function of the supply voltage in Fig.2 (BTL application) and Fig.3 (stereo application). June 1989 4
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