TECHNICAL DATA
ILA7050
LOW VOLTAGE MONO/STEREO POWER AMPLIFIER
GENERAL DESCRIPTION
The ILA7050 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
Supply voltage range
Total quiescent current (at Vp = 3 V)
Bridge tied load application (BTL)
Output power at R) = 32 Q
Vp=3V;dtat=10%
D.C. output offset voltage between the outputs
Noise output voltage (r.m.s. value)
at f
=
1 kHz; Rg = 5 kfit
Stereo application
Output power at R( = 32
Ω
d
tot
= 10%; Vp = 3V
d
tot
=
10%; Vp= 4,5V
Channel separation at Rs = 0
Ω;
f = 1 kHz
Noise output voltage (r.m.s. value)
at f = 1 kHz; Rs = 5 kΩ
PACKAGE OUTLINE
8-lead DIL; plastic (SOT97); SOT97-1;
P
O
P
O
K
V
no(rms)
typ.
typ.
typ.
typ.
35 mW
75 mW
40 dB
100 mV
V
no(rms)
typ.
140 mV
PO
Vp
ltot
1,6
typ.
to 6,0 V
3,2 mA
typ.
max.
140 mW
70 mV
lAVI
Rev. 00
ILA7050
CHARACTERISTICS Vp = 3 V; f = 1 kHz; R
L
= 32
0.,
Tamb = 25 °C; unless otherwise specified
PARAMETER
Supply
Supply voltage
Total quiescent current
Bridge-tied load application (BTL); see Fig.4
Output power; note 1
Vp = 3,0 V; diet = 10%
Vp = 4,5 V; diet = 10% (
RL
= 64 Q)
Voltage gain
Noise output voltage (r.m.s. value)
R
S
= 5 kQ.-, f = 1 kHz
R
S
= 0 Q; f = 500 kHz; B
=5
kHz
D.C. output offset voltage (at Rs = 5 kΩ)
Input impedance (at Rs =∞)
Input bias current
Stereo application;
Output power; note 1
Vp=3,OV;dtot=10%
Vp=4,5V;dtot=10%
Voltage gain
Noise output voltage (r.m.s. value)
R
S
= 5 kΩ; f = 1 kHz
R
S
= 0
Ω;
f = 500 kHz; B =5 kHz
Channel separation
R
S
= 0
Ω;
f = 1 kHz
Input impedance (at Rs =
∞)
Input bias current
Vno(rms)
Vno(rms)
K
IZjl
Ii
-
-
30
2
-
100
tbf
40
-
20
-
-
-
-
-
mV
mV
dB
MΩ
nA
P
O
P
O
G
V
-
-
24.5
35
75
26
-
-
27.5
mW
mW
dB
Vno(rms)
Vno(rms)
l∆VI
IZiI
Ii
-
-
-
1
-
140
tbf
-
-
40
-
-
70
-
-
mV
mV
mV
MΩ
nA
P
O
P
O
G
V
-
-
-
140
150
32
-
-
-
mW
mW
dB
Vp
Itot
1,6
-
-
3,2
6,0
4
V
mA
SYMBOL
MIN.
TYP.
MAX.
UNIT
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).
Аpplication
diagram (BTL)
Аpplication
diagram (stereo)
Rev. 00
ILA7050
N SUFFIX PLASTIC DIP
(MS – 001BA)
A
8
5
B
1
4
Dimension, mm
Symbol
A
B
MIN
8.51
6.1
MAX
10.16
7.11
5.33
0.36
1.14
2.54
7.62
0°
2.92
7.62
0.2
0.38
10°
3.81
8.26
0.36
0.56
1.78
F
L
C
D
C
-T-
SEATING
PLANE
F
G
M
H
J
N
G
D
0.25 (0.010) M
T
K
H
J
K
L
M
N
NOTES:
1. Dimensions “A”, “B” do not include mold flash or protrusions.
Maximum mold flash or protrusions 0.25 mm (0.010) per side.
Rev. 00
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