ETC ILA7050

INTEGRAL
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
Vp
1,6
to 6,0 V
Total quiescent current (at Vp = 3 V)
ltot
typ.
3,2 mA
Vp=3V;dtat=10%
PO
typ.
140 mW
D.C. output offset voltage between the outputs
lAVI
max.
70 mV
Vno(rms)
typ.
140 mV
dtot = 10%; Vp = 3V
PO
typ.
35 mW
dtot = 10%; Vp= 4,5V
PO
typ.
75 mW
Channel separation at Rs = 0 Ω; f = 1 kHz
Noise output voltage (r.m.s. value)
K
typ.
40 dB
at f = 1 kHz; Rs = 5 kΩ
Vno(rms)
typ.
100 mV
Bridge tied load application (BTL)
Output power at R) = 32 Q
Noise output voltage (r.m.s. value)
at f = 1 kHz; Rg = 5 kfit
Stereo application
Output power at R( = 32 Ω
PACKAGE OUTLINE 8-lead DIL; plastic (SOT97); SOT97-1;
INTEGRAL
CHARACTERISTICS Vp = 3 V; f = 1 kHz; RL = 32 0., Tamb = 25 °C; unless otherwise specified
PARAMETER
SYMBOL MIN.
TYP.
MAX.
UNIT
Supply
Supply voltage
Vp
1,6
-
6,0
V
Total quiescent current
Itot
-
3,2
4
mA
Vp = 3,0 V; diet = 10%
PO
-
140
-
mW
Vp = 4,5 V; diet = 10% (RL = 64 Q)
PO
-
150
-
mW
Voltage gain
GV
-
32
-
dB
RS = 5 kQ.-, f = 1 kHz
Vno(rms)
-
140
-
mV
RS = 0 Q; f = 500 kHz; B =5 kHz
Vno(rms)
-
tbf
-
mV
D.C. output offset voltage (at Rs = 5 kΩ)
Input impedance (at Rs =∞)
Input bias current
l∆VI
IZiI
1
-
70
-
Ii
-
40
-
mV
MΩ
nA
Vp=3,OV;dtot=10%
PO
-
35
-
mW
Vp=4,5V;dtot=10%
PO
-
75
-
mW
Voltage gain
GV
24.5
26
27.5
dB
RS = 5 kΩ; f = 1 kHz
Vno(rms)
-
100
-
mV
RS = 0 Ω; f = 500 kHz; B =5 kHz
Channel separation
RS = 0 Ω; f = 1 kHz
Vno(rms)
-
tbf
-
mV
K
30
40
-
dB
Input impedance (at Rs = ∞)
Input bias current
IZjl
2
-
-
Ii
-
20
-
MΩ
nA
Bridge-tied load application (BTL); see Fig.4
Output power; note 1
Noise output voltage (r.m.s. value)
Stereo application;
Output power; note 1
Noise output voltage (r.m.s. value)
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).
Àpplication diagram (BTL)
Àpplication diagram (stereo)