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Philips Semiconductors Product specification
Low voltage mono/stereo power amplifier TDA7050
GENERAL DESCRIPTION
The TDA7050 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 DIL; plastic (SOT97); SOT97-1; 1996 July 23.
Supply voltage range V
P
1,6 to 6,0 V
Total quiescent current (at V
P
= 3 V) I
tot
typ. 3,2 mA
Bridge tied load application (BTL)
Output power at R
L
= 32 Ω
V
P
= 3 V; d
tot
= 10% P
o
typ. 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; R
S
= 5 kΩ V
no(rms)
typ. 140 µV
Stereo application
Output power at R
L
= 32 Ω
d
tot
= 10%; V
P
= 3 V P
o
typ. 35 mW
d
tot
= 10%; V
P
= 4,5 V P
o
typ. 75 mW
Channel separation at R
S
= 0 Ω; f = 1 kHz α typ. 40 dB
Noise output voltage (r.m.s. value)
at f = 1 kHz; R
S
= 5 kΩ V
no(rms)
typ. 100 µV