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
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 k
Ω
V
no(rms)
typ.
140
µ
V
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 k
Ω
V
no(rms)
typ.
100
µ
V
