TECHNICAL DATA
ILA7496
5W+5W AMPLIFIER WITH
DC VOLUME CONTROL
DESCRIPTION
ORDERING INFORMATION
ILA7496 DBS15
T
A
= 0
to 70 C
The ILA7496 is a stereo 5+5W class AB power amplifier assembled
in the (DBS15), especially developed for high quality sound, TV
applications. Features of the ILA7496 include linear volume control,
"Stand-by" and "Mute" functions.
ILA7496 can be applied in sound processing circuits of consumer
audio-devices & TV-sets. Both types of power supply (from 220V
electrical network and battery) are available.
FEATURES
2
5 Output power R
L
= 8 Ohm, THD = 10% U
S
= 22 V;
"Stand-by" & "Mute" modes;
linear volume regulation;
no external components on "stand-by" pin;
Single supply up to 32 V;
Short-circuit protection;
Thermal overload protection;
internally fixed gain;
linear outputs (pins 02, 04) after volume control circuit (for earphones);
power 15-pin package ( DBS 15 ).
PIN CONNECTION
(Top view)
01
09
08
07
06
05
04
03
02
1
ILA7496
PIN DESCRIPTION
Pin
number
Symbol Description
01
INR
Input channel 1
02
VAROUT_R
Output channel 1 with volume regulation
03
VOLUME
Volume regulation input
04
VAROUT_L
Output channel 2 with volume regulation
05
INL
Input channel 2
06 NC
Not
connected
07
SVR
Level control input
08
S_GND
GND (low current)
09
STBY
"Stand-by" mode pin
10
MUTE
"Mute" mode pin
11
PW_GND
GND (power)
12
OUTL
Output channel 2
13 V
S
Power supply pin
14
OUTR
Output channel 2
15
PW_GND
GND (power)
BLOCK DIAGRAM
VOLUME
OP AMP
+
-
1
30K
VOLUME
OP AMP
+
-
30K
5
8
S_GND
2
14
9
10
12
3
4
VOLUME
VAROUT_L
OUTR
STBY
MUTE
OUTL
11
PW_GND
SVR
7
PW_GND
15
13
60K
2
ILA7496
3
MANIMUM & ABSOLUTE MAXIMUM RATINGS
Maximum ratings
Absolute maximum
ratings
Parameter Symbol
Min Max Min Max
DC Supply Voltage, V
U
S
10 32 - 35
Maximum Input Voltage,V
U
IN
- - - 8.0
Volume CTRL DC voltage (Pin03),
V
U
VOL
- 5.0
- 7.0
Output peak current, A
Ipeak
-
-
1.0
(internally
limited)
-
Junction temperature,
C
T
J
- 150
- 151
Storage temperature,
C
Tstg
- - -40
150
Total power dissipation, W
P
tot
-
1)
- 15
2)
___________
1)
P
tot
, W - power dissipation permitted for device at T
A
,
C P
tot
, W, is calculated by formula
P
tot
= ( T
j
- T
A
) / R
th
j-a ,
(1)
T
j
increased maximum junction temperature, 150
C;
R
th
j-a
- thermal resistance junction-air,
C/W , (for ICs without additional heat dissipators(radiators) 35
C/W);
For ICs on external radiator,
R
th
j-a
= R
th
j-c
+ R
th
c-r
+ R
th
r-a,
(2)
R
th
j-c
- thermal resistance junction-package 4
C/W;
R
th
c-r
- thermal resistance package-radiator,
C/W;
R
th
r-a
- thermal resistance radiator-air,
C/W.
R
th
c-r
,
R
th
r-a
is defined by radiator construction
2)
T
A
= 70
C, for ICs mounted on external radiator
ILA7496
4
ELECTRIC PARAMETERS
Value
Parameter, unit
Symbol
Min Max
Mode
T
A
, (
C)
Quiescent current, mA
I
q
U
S
= 22 V. No input signal ,
C
SVR
= 470 uF
Quiescent current "stand-
by " mode, mA
I
qSTBY
Us = 22 V. No input signal
C
SVR
= 470 uF
Output power, W
P
O
5.0
4.0
-
Us = 22 V, THD = 10%,
f
I
= 1 kHz; R
L
= 8 Ohm;
C
SVR
= 470 uF
Total Harmonic
Distortion, %
THD - 0.4
0.6
Us = 22 V, Gv = 30 dB,
Po = 1W, f
I
= 1kHz,
R
L
= 8Ohm; C
SVR
= 470uF
Close loop gain, dB
G
V
28.5
28.0
31.5
32.0
Us = 22 V, U
VOL
> 4.5 V,
R
L
= 8 Ohm, f
I
= 1kHz;
C
SVR
= 470 uF
Monitor Out Gain
G
VLine
-1.5
-1.6
1.5
1.6
Us = 22 V, U
VOL
> 4.5 V,
f
I
= 1 kHz , R
L
> 30 kOhm
C
SVR
= 470 uF
Slew Rate, V/us
SR
5.0
4.0
-
Us = 22 V, R
L
= 8 Ohm
f
I
= 1 kHz , Q = 2;
C
SVR
= 470 uF
Input resistance, kOhm
R
i
22.5
17.0
-
Us = 22 V, R
L
= 8 Ohm,
f
I
= 1 kHz; C
SVR
= 470 uF
Stand-by mode threshold, V
U
STBY
1.5
1.3
3.5
3.7
Us = 22 V, R
L
= 8 Ohm;
f
I
= 1 kHz, C
SVR
= 470 uF
Mute mode threshold, V
U
MUTE
1.5
1.3
3.5
3.7
Us = 22 V, R
L
= 8 Ohm;
f
I
= 1 kHz, C
SVR
= 470 uF
Volume level attenuation,
dB
A
MIN
VOL
80
70
-
Us = 22 V, U
VOL
< 0.5 V,
R
L
= 8 Ohm, f
I
= 1 kHz;
C
SVR
= 470 uF
Mute Attenuation, dB
A
MUTE
50
45
-
Us = 22 V, R
L
= 8 Ohm;
C
SVR
= 470 uF
Stand-by bias current, uA
I
stbyBIAS
-20
-25
-
Us = 22 V, R
L
= 8 Ohm
No input signal.
Stand-by or play mode
25
10
0
3
70
3
ILA7496
5
ELECTRIC PARAMETERS (continued)
Value
Parameter, unit
Symbol
Min Max
Mode T
A
,
C
-
5.0
8.0
Us = 22 V, R
L
= 8 Ohm
No input signal. "Mute" mode
Mute bias current, uA
I
muteBIAS
-
2.0
5.0
"Play" mode
-
800
1200
Us = 22 V, R
L
= 8 Ohm;
f = 20 Hz-22 kHz,
C
SVR
= 470 uF.
No input signal
"Play" mode, max volume
-
250
375
Us = 22 V, R
L
= 8 Ohm;
f = 20 Hz-22 kHz,
C
SVR
= 470 uF.
No input signal
"Play" mode, max attenuation
Total Output Noise, uV
e
N
-
150
225
Us = 22 V, R
L
= 8 Ohm;
f = 20 Hz-22 kHz,
C
SVR
= 470 uF.
No input signal, "Mute" mode
Variable Output Resistance,
Ohm
R
Var
Out
-
100
120
Us = 22 V, f
I
= 1 kHz;
C
SVR
= 470 uF;
C
VAROUT
= 1000 uF;
R
VAROUT
= 30 Ohm
35
30
-
Us = 22 V + U
RIP
,
U
RIP
= 1 V (rms), f
I
= 1 kHz,
C
SVR
= 470 uF, R
L
= 8 Ohm
Max volume
Supply Voltage Rejection,
dB
SVR
55
50
- Max
attenuation
25
10
0
3
70
3
Note:
1 Minus means only outside direction of current
2 Designations:
- U
S
Supply voltage, Pin 13 (V
S
);
- U
VOL
Voltage applied to Pin 03 (VOLUME), or to resistor 300 kOhm, connected to pin 03 and voltage
source;
- R
L
resistor connected to pin 12 (OUTL), 14 (OUTR) and pin "GND";
- C
SVR
Capacitor connected to pin 07 (SVR) and pin "GND";
- C
VAROUT
- Capacitor connected to pin 02 (VAROUT_R), 04 (VAROUT_L) and pin "GND";
- R
VAROUT
- resistorconnected to pin 02 (VAROUT_R), 04 (VAROUT_L) and pin "GND";
- U
RIP
amplitude of sine-form modulation signal
3 Output resistance of alternate signal source (generator) R
G
= 50 Ohm
ILA7496
6
Typical Values of Electric Parameters
(
T
A
= 25
C
)
Parameter Unit
Symbol
Mode
Typical
value
Us = 22 V, THD = 1%, R
L
=8 Ohm;
C
SVR
=470uF;f
I
=1 kHz; U
VOL
= 5 V;
U
STBY
= U
MUTE
= 0 V
4
Us = 12 V, THD = 10%, R
L
=4 Ohm;
C
SVR
=470uF;f
I
=1 kHz; U
VOL
= 5 V;
U
STBY
= U
MUTE
= 0 V
2.1
Output power
W
P
O
Us = 12 V, THD = 1%, R
L
=4 Ohm; C
SVR
=470uF;
f
I
=1 kHz; U
VOL
= 5 V;
U
STBY
= U
MUTE
= 0 V
1.0
Band width
mHz BW
Us = 22 V, R
L
= 8 Ohm; C
SVR
=470uF; U
VOL
= 5 V;
U
STBY
= U
MUTE
= 0 V;
U
I
= U
SIN
(f
I
=1 kHz; U
.
=50 mV)
0.6
Bias output voltage on
SVR control
mV DCU
os
Us = 22 V.
No input signal.
U
VOL
= 5 V; U
STBY
= U
MUTE
= 0 V
200
Stand-by output voltage
V
U
oq
Us = 22 V
No input signal.
U
VOL
= 5 V; U
STBY
= U
MUTE
= 0 V
11
Stand-by bias current
uA I
stbyBIAS
Us = 22 V, R
L
= 8 Ohm;
U
VOL
= 5 V; C
SVR
= 470 uF
"Stand-by" mode,
U
STBY
= 5 V, U
MUTE
= 5 V
80
Thermal Muting
C T
M
Us = 22 V; f= 1 kHz,
R
L
= 8 Ohm; C
SVR
= 470 uF;
150
Thermal Shut-down
C T
S
U
VOL
= 5 V;
U
STBY
= U
MUTE
= 0 V
160
Truth-Table
MUTE (Pin 10)
ST-BY (Pin 09)
OPERATING CONDITION
H H
STANDBY
L H
STANDBY
H L
MUTE
L L
PLAY
Note:
1. H high level; L low level.
2. It is permitted to shunt pin 09 ("Stand-by mode" pin) to GND for simplified application
with mute function only.
3. It is recommended for ON/OFF play mode to observe following conditions:
-On switch-ON, if voltage level on pin 07 (SVR) is higher then 2,5V, IC must change mode
from "Mute" to "Play";
- On switch-OFF , if voltage level on pin 07 (SVR) is higher then 2,5V, IC must change
mode from IC must change mode from "Play" to "Mute".
ILA7496
Application Circuit.
VOLUME
OP AMP
+
-
MUTE/STBY
PROTECTIONS
1
C2 470nF
INR
30K
VOLUME
OP AMP
+
-
30K
C8 1000mF
C6 1000mF
C7
1mF
R2 10K
5
C3 470nF
INL
8
S_GND
2
14
9
10
12
3
4
R1 300K
C5
100nF
VOLUME
OUTR
S1 STBY
S2 MUTE
OUTL
11
C4 470mF
SVR
7
PW_GND
15
13
C9
0.1mF
C1
1000mF
+V
PW_GND
S
VOL
P1
50K
LOG
+5V
TP1
PW_GND
PW_GND
S_GND
+5V
+5V
VAROUT_L
APPLICATION SUGGESTIONS
The recommended values of the external components are those shown on the application circuit of figure 1a.
Different values can be used, the following table can help the designer.
SUGGESTION
COMPONENT VALUE
PURPOSE
LARGER THAN
SUGGESTION
SMALLER THAN
SUGGESTION
R1 300K
Volume
control
circuit
Larger volume regulation
time
Smaller volume regulation
time
R2
10K
Mute time constant Larger mute on/off time Smaller mute on/off time
P1 50K
Volume
control
circuit
C1 1000uF
Supply
voltage
bypass
Danger of oscillation
C2 470nF
Input
DC
decoupling
Lower low frequency
cutoff
Higher low frequency cutoff
C3 470nF
Input
DC
decoupling
Lower low frequency
cutoff
Higher low frequency cutoff
C4
470uF
Ripple rejection
Better SVR
Worse SVR
C5
100nF
Volume control time
costant
Larger volume regulation
time
Smaller volume regulation
time
C6 1000uF
Output
DC
decoupling
Lower low frequency
cutoff
Higher low frequency cutoff
C7
1uF
Mute time costant Larger mute on/off time Smaller mute on/off time
C8 1000uF
Output
DC
decoupling
Lower low frequency
cutoff
Higher low frequency cutoff
C9 100nF
Supply
voltage
bypass
Danger of oscillation
7
ILA7496
Turn ON/OFF Sequences (for optimizing the POP performances)
A) USING MUTE AND STAND-BY FUNCTIONS
B) USING ONLY THE MUTE FUNCTION
To semplify the application, the stand-by pin can be connecteddirectly to Ground.
During the ON/OFF transitions is recommend to respect the following conditions.
- At the turn-on, the transition mute - play must be made when the SVR pin is higher than 2.5V
- At the turn-off, the ILA7496 must be brought to mute from the play condition when the SVR pin is higher
than 2.5V.
8
ILA7496
DBS15 PACKAGE DIMENSIONAL DATA
9
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