TECHNICAL DATA
ILA7496L
2W+2W AMPLIFIER WITH
DC VOLUME CONTROL
DESCRIPTION
ORDERING INFORMATION
IL7496L Plastic
T
A
= 0
to 70 C
The IL7496L is a stereo 2W+2W class AB power amplifier assembled in the
@ Powerdip 14+3+3 package, specially
designed for high quality sound, TV and Monitor applications.
Features of the IL7496L include linear volume control,
Stand-by and mute functions.
2W+2W OUTPUT POWER
RL = 8 @THD = 10% Vcc = 14V
ST-BY AND MUTE FUNCTIONS
)
LOW TURN-ON TURN-OFF POP NOISE
LINEAR VOLUME CONTROL DC COUPLED WITH
POWER OP. AMP.
NO BOUCHEROT CELL
NO ST-BY RC INPUT NETWORK
SINGLE SUPPLY RANGING UP TO 15V
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
INTERNALLY FIXED GAIN
SOFT CLIPPING
VARIABLE OUTPUT AFTER VOLUME CONTROL CIRCUIT
POWERDIP (14+3+3) PACKAGE
BLOCK DIAGRAM
+
-
OP AMP
7
15, 16
VAROUT_R
V
s
VOLUME
30K
470nF
INR
MUTE/STBY
PROTECTIONS
60K
+
-
OP AMP
30K
VOLUME
470nF
INL
470 F
SVR 10
VOLUME
6
5
VAROUT_L
GND
1,2,3,13,
18,19,20
300K
100nF
+5V
4
9
1000 F
OUTR
STBY
MUTE
S1 ST-BY
S2 MUTE
+5V
+5V
10K
1 F
1000 F
OUTL
14
11
12
17
S_GND
ILA7496L
Absolute Maximum Ratings
Symbol
Parameter
Value
Unit
Vs
DC Supply Voltage
26
V
V
IN
Maximum Input Voltage
8
Vpp
T
amb
Ambient Operating Temperature
0 to 70
C
T
stg
, Tj
Storage and Junction Temperature
-40 to 150
C
V
6
Volume CTRL DC voltage
7
V
PIN CONNECTION
ELECTRICAL CHARACTERISTICS
(Refer to the test circuit Vs = 14V, R
L
= 80,Rg = 50 , Tam = 25C)
Symbol
Parameter Test
Condition Min
Typ
Max Unit
Vs
Supply Voltage Range
10
18
V
Iq
Total Quiescent Current
25
50
mA
DC/Vos
Output DC Offset Referred to
SVR Potenial
No Input Signal
200
mV
Vo
Quiescent Output Voltage
7
V
Po
Output Power
THD = 10%, R
L
= 8 1.6
2
W
THD = 1%, R
L
= 8
1.3
W
THD
Total Harmonic Distortion
Gv = 30dB, Po = 1W, f = 1KHz
0.4
%
I
peak
Output Peak Current
(internally limited)
0.7
0.9
A
V
in
Input Signal
2.8
Vrms
Gv
Closed Loop Gain
Vol Ctrl
> 4.5V
28.5 30 31.5
dB
G
vLine
Monitor Out Gain
Vol Ctrl
> 4.5V, Zload > 30K
-1.5 0 1.5 dB
A
Min
V
OL
Attenuation at Minimum
Volume
Vol Ctrl
< 0.5V
80 dB
BW
0.6 MHz
ILA7496L
ELECTRICAL CHARACTERISTICS
(continued)
Symbol
Parameter Test
Condition
Min
Typ
Max Unit
e
N
Total Output Noise
f = 20Hz to 22KHz
Play, max volume
500
800
V
f = 20Hz to 22KHz
Play, max attenuation
100
250
V
f = 20Hz to 22KHz
Mute
60
150
V
SR Slew
Rate
5 8
V/
s
R
i
Input Resistance
22.5 30 K
R
Var Out
Variable Output Resistance
30
100
R
load Var Out
Variable Output Load
2
K
SVR
Supply Voltage Rejection
f = 1kHz, max volume
C
SVR
= 470
F, V
RIP
= 1V
rms
35 39
dB
f = 1kHz, max attenuation
C
SVR
= 470
F, V
RIP
= 1V
rms
55 65
dB
T
M
Thermal Muting
150
C
T
s
Thermal Shut-down
160
C
MUTE STAND-BY & INPUT SELECTION FUNCTIONS
V
ST
ON
Stand-by ON Threshold
3.5
V
V
ST
OFF
Stand-by OFF Threshold
1.5
V
V
M
ON
Mute ON Threshold
3.5
V
V
M
OFF
Mute OFF Threshold
1.5
V
I
qST-BY
Quiescent Current @
Stand-by
0.6
1
mA
A
MUTE
Mute
Attenuation
50 65
dB
I
stbyBIAS
Stand-by bias current
Stand by on V
ST-BY
= 5V
V
MUTE
= 5V
80
A
A
Play or Mute
-20 -5
A
I
muteBIAS
Mute bias current
Mute
1 5
A
Play
0.2
2
A
APPICATION 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.
COMPONENT SUGGESTION
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
1000
F
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
470
F
Ripple rejection
Better SVR
Worse SVR
C5
100nF
Volume control time
constant
Larger volume regulation
time
Smaller volume regulation
time
C6
1000
F
Output DC decoupling
Lower low frequency cutoff
Higher low frequency cutoff
C7
1
F
Mute time constant
Larger mute on/off time
Smaller mute on/off time
C8
1000
F
Output DC decoupling
Lower low frequency cutoff
Higher low frequency cutoff
C9
100nF
Supply voltage bypass
Danger of oscillation
ILA7496L
Figure 1A. Application Circuit
ILA7496L
MUTE STAND-BY TRUTH TABLE
MUTE ST-BY
OPERATING
CONDITIO
H H STANDBY
L H STANDBY
H L MUTE
L L PLAY
Turn ON/OFF Sequences (for optimizing the POP performances)
A) USING MUTE AND STAND-BY FUNCTIONS
B) USING ONLY THE MUTE FUNCTION
To simplify the application, the stand-by pin can be connected directly 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 IL7496L must be brought to mute from the play condition when the SVR pin is higher than 2.5V
ILA7496L
Quiescent current vs. Supply Voltage
Output DC Voltage vs. Supply Voltage
Output DC Offset vs. Supply Voltage
Output Power vs. Supply Voltage
Distortion vs. Output Power
Closed Loop gain vs. Frequency
ILA7496L
St-By Attenuation vs. Vpin 11
Mute Attenuation vs. Vpin 12
ILA7496L
PACKAGE DIMENSION
N SUFFIX PLASTIC DIP
(MS - 001AD)
Symbol
MIN
MAX
A
24.89
26.92
B
6.10
7.11
C
5.33
D
0.36
0.56
F
1.14
1.78
G
H
J
0
10
K
2.92
3.81
NOTES:
L
7.62
8.26
1.
Dimensions "A", "B" do not include mold flash or protrusions.
M
0.20
0.36
Maximum mold flash or protrusions 0.25 mm (0.010) per side.
N
0.38
Dimension, mm
2.54
7.62
L
H
M
J
A
B
F
G
D
SEATING
PLANE
N
K
0.25 (0.010) M T
-T-
C
1
20
10
11
PDF 
ZIP