June 1989 4
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
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).
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
Supply
Supply voltage VP1,6 −6,0 V
Total quiescent current Itot −3,2 4 mA
Bridge-tied load application (BTL); see Fig.4
Output power; note 1
VP = 3,0 V; dtot = 10% Po−140 −mW
VP = 4,5 V; dtot = 10% (RL = 64 Ω)P
o
−150 −mW
Voltage gain Gv−32 −dB
Noise output voltage (r.m.s. value)
RS= 5 kΩ; f = 1 kHz Vno(rms) −140 −µV
RS = 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 = ∞)|Z
i
|1 −−MΩ
Input bias current Ii−40 −nA
Stereo application; see Fig.5
Output power; note 1
VP = 3,0 V; dtot = 10% Po−35 −mW
VP = 4,5 V; dtot = 10% Po−75 −mW
Voltage gain Gv24.5 26 27.5 dB
Noise output voltage (r.m.s. value)
RS = 5 kΩ; f = 1 kHz Vno(rms) −100 −µV
RS = 0 Ω; f = 500 kHz; B = 5 kHz Vno(rms) −tbf −µV
Channel separation
RS = 0 Ω; f = 1 kHz α30 40 −dB
Input impedance (at RS = ∞)|Z
i
|2 −−MΩ
Input bias current Ii−20 −nA