July 1994 2
Philips Semiconductors Product specification
Low voltage mono/stereo power amplifier TDA7050T
GENERAL DESCRIPTION
The TDA7050T is a low voltage audio amplifier for small radios with headphones (such as watch, pen and pocket radios)
in mono (bridge-tied load) or stereo applications.
Features
•Limited to battery supply application only (typ. 3 and 4 V)
•Operates with supply voltage down to 1,6 V
•No external components required
•Very low quiescent current
•Fixed integrated gain of 26 dB, floating differential input
•Flexibility in use −mono BTL as well as stereo
•Small dimension of encapsulation (see package design example).
QUICK REFERENCE DATA
PACKAGE OUTLINE
8-lead mini-pack; plastic (SO8; SOT96A); SOT96-1; 1996 July 24.
Supply voltage range VP1,6 to 6,0 V
Total quiescent current (at VP= 3 V) Itot typ. 3,2 mA
Bridge tied load application (BTL)
Output power at RL= 32 Ω
VP= 3 V; dtot= 10% Potyp. 140 mW
D.C. output offset voltage between the outputs |∆V| max. 70 mV
Noise output voltage (r.m.s. value)
at f = 1 kHz; RS= 5 kΩVno(rms) typ. 140 µV
Stereo application
Output power at RL= 32 Ω
dtot= 10%; VP= 3 V Potyp. 35 mW
dtot= 10%; VP= 4,5 V Potyp. 75 mW
Channel separation at RS= 0 Ω; f = 1 kHz αtyp. 40 dB
Noise output voltage (r.m.s. value)
at f = 1 kHz; RS= 5 kΩVno(rms) typ. 100 µV