ChipFind - документация

Электронный компонент: ILA7053

Скачать:  PDF   ZIP
ILA7053
1
2
X
1
W
PORTABLE
/
MAINS
-
FED STEREO POWER AMPLIFIER
GENERAL DESCRIPTION
The ILA7053 is an integrated class-B stereo power amplifier in a 16-lead dual-in-line (DIL) plastic package.
The device, consisting of two BTL amplifiers, is primarily developed for portable audio applications but may
also be used in mains-fed applications.
Features
No external components
No switch-ON/OFF clicks
Good overall stability
Low power consumption
Short-circuit-proof.
QUICK REFERENCE DATA
PARAMETER
CONDITIONS
SYMBOL
MIN. TYP. MAX. UNIT
Supply voltage range
Vp
3
6
18
V
Total quiescent current
R
L
=
Itot -
9
16
mA
Output power
R
L
=8
Vp=6V
P
O
- 1.2
- W
Internal voltage gain
G
V
38 39 40 dB
Total harmonic distortion
P
O
=0.1W THD
-
0.2
1.0
.
%
PACKAGE OUTLINE 16-lead DIL; plastic (SOT38); SOT38-1;
PINNING
1
SGND1
signal ground 1 9
OUT2A
output 2 (positive)
2
IN1
input 1 10
GND2
power ground 2
3
n.c. not
connected
11
n.c.
not connected
4
n.c. not
connected
12
OUT2B
output 2 (negative)
5
Vp supply
voltage
13
OUT1B
output 1 (negative)
6
IN2 input
2
14
GND1
power ground 1
7
SGND2
signal ground 2
15
n.c.
not connected
8
n.c.
not connected
16
OUT1A
output 1 (positive)

Note
The information contained within the parentheses refer to the polarity of the loudspeaker terminal to which the
output must be connected.
FUNCTIONAL DESCRIPTIO
The ILA7053 is a stereo output amplifier, with an internal gain of 39 dB, which is primarily for use in portable audio
applications but may also be used in mains-fed applications. The current trends in portable audio application design is to
reduce the number of batteries which results in a reduction of output power when using conventional output stages. The
ILA7053 overcomes this problem by using the Bridge-Tied-Load (BTL) principle and is capable of delivering 1.2 W into an
8
load (Vp = 6 V). The load can be short-circuited under all input conditions.
RATINGS Limiting values in accordance with the Absolute Maximum System
(IEC 134)
PARAMETER CONDITIONS
SYMBOL
MIN.
MAX.
UNIT
Supply voltage
Vp
-
18
V
Non-repetitive peak output current
I
OSM
- 1.5
A
Crystal temperature
T
C
-
+150
C
Storage temperature range
Tstg
-55
+150
C
ILA7053
2
CHARACTERISTICS Vp = 6 V; R(_ = 8 Q; Tamb = 25 C; unless otherwise specified; measured from test
circuit, Fig.7.
PARAMETER CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
Supply voltage range
Vp
3
6
18
V
Total quiescent current
R
L
=
; note 1
ltot - 9 16 mA
Input bias current
Ibias
-
100
300
nA
Supply voltage ripple rejection
note 2
SVRR
40
50
-
dB
Input impedance
Zi
-
100
-
k
DC output offset voltage
note 3
V
13-16
- - 100
mV
V
12-9
- - 100
mV
Noise output voltage
(RMS value)
note 4
Vno(rms)
-
150
300
mV
note
5
Vno(rms)
-
60
-
mV
Output power
THD = 10%
P
O
- 1.2 - W
Total harmonic distortion
P
O
=0.1W THD
- 0.2 1.0 %
Internal voltage gain
G
V
38 39 40 dB
Channel balance
Gv
- - 1 dB
Channel separation
note 3
a
40
-
-
dB
Frequency response
f
-
0.02 to 20
-
kHz
Notes to the characteristics
1. With a practical load the total quiescent current depends on the offset voltage.
2. Ripple rejection measured at the output with Rs = 0
and f =100 Hz to 10 kHz. The ripple voltage (200 mV) is applied
to the positive supply rail.
Rs = 5 k
. The noise output voltage (RMS value) is measured with Rs = 5 k, unweighted and a bandwidth of 60 Hz to
15 kHz.
The noise output voltage (RMS value) is measured with Rs = 0
and f = 500 kHz with 5 kHz bandwidth. If R
L
= 8
and
L
L
= 200
mH
the noise output current is only 100 nA.