June 1989
4
Philips Semiconductors
Product specification
Low voltage mono/stereo power amplifier
TDA7050
CHARACTERISTICS
V
P
= 3 V; f = 1 kHz; R
L
= 32
Ω
; T
amb
= 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
V
P
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; d
tot
= 10%
P
o
−
140
−
mW
V
P
= 4,5 V; d
tot
= 10% (R
L
= 64
Ω
)
P
o
−
150
−
mW
Voltage gain
G
v
−
32
−
dB
Noise output voltage (r.m.s. value)
R
S
= 5 k
Ω
; f = 1 kHz
V
no(rms)
−
140
−
µ
V
R
S
= 0
Ω
; f = 500 kHz; B = 5 kHz
V
no(rms)
−
tbf
−
µ
V
D.C. output offset voltage (at R
S
= 5 k
Ω
)
|
∆
V|
−
−
70
mV
Input impedance (at R
S
=
∞
)
|Z
i
|
1
−
−
M
Ω
Input bias current
I
i
−
40
−
nA
Stereo application; see Fig.5
Output power; note 1
V
P
= 3,0 V; d
tot
= 10%
P
o
−
35
−
mW
V
P
= 4,5 V; d
tot
= 10%
P
o
−
75
−
mW
Voltage gain
G
v
24.5
26
27.5
dB
Noise output voltage (r.m.s. value)
R
S
= 5 k
Ω
; f = 1 kHz
V
no(rms)
−
100
−
µ
V
R
S
= 0
Ω
; f = 500 kHz; B = 5 kHz
V
no(rms)
−
tbf
−
µ
V
Channel separation
R
S
= 0
Ω
; f = 1 kHz
α
30
40
−
dB
Input impedance (at R
S
=
∞
)
|Z
i
|
2
−
−
M
Ω
Input bias current
I
i
−
20
−
nA
