
No. 6295-2/7
LA6544M
Parameter
Symbol
Conditions
Ratings
Unit
Operating supply voltage
V
CC
V
CC
≥
V
S
1, 2
V
S
1 and V
S
2 are the output stage power supply.
V
CC
≥
V
S
1 and V
S
2
4 to 13
V
V
S
1, 2
4 to 13
V
Recommended Operating Conditions
at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
V
CC
no load current drain 1
V
CC
no load current drain 2
VS1 no load current drain 1
I
CC
-ON
I
CC
-OFF
I
S
1-ON
I
S
2-OFF
I
S
2-ON
I
S
2-OFF
Output on (MUTE1 and MUTE2: high), V
CC
Output off (MUTE1 and MUTE2: low), V
CC
Output on (MUTE1 and MUTE2: high), V
S
1
Output off (MUTE1 and MUTE2: low), V
S
1
Output on (MUTE1 and MUTE2: high), V
S
2
Output off (MUTE1 and MUTE2: low), V
S
2
Potential difference between the + and – outputs for each
channel
10
25
mA
4
mA
20
35
mA
VS1 no load current drain 2
4
mA
VS2 no load current drain 1
5
10
mA
VS2 no load current drain 2
4
mA
Output offset voltage
V
OF
1 to 4
–50
+50
mV
Input voltage range 1
V
IN
1
V
IN
2
Input voltage range for channels 1, 2, and 3
0
V
S
1
V
S
2
V
Input voltage range 2
Input voltage range for channel 4
0
V
Output voltage 1
VO1
I
O
= 700 mA, the difference between the outputs for
channels 1, 2, and 3
4
4.5
V
Output voltage 2
VO2
I
O
= 700 mA, the difference between the outputs for
channel 4
10.5
11
V
Closed circuit voltage gain
VG1
The BTL amplifier voltage gain for channels 1, 2, and 3
7
dB
VG2
The BTL amplifier voltage gain for channel 4
14
dB
Slew rate
SR
*
1
0.5
V/μs
Muting on voltage
V
MUTE
MUTE1 and MUTE2. The voltage at which the output
turns on.
*
2
1.5
2
V
Electrical Characteristics
at Ta = 25°C, V
CC
= V
S
2 = 12 V, V
S
1 = 5 V, V
REF
= 2.5 V
Notes: 1. Design guarantee value.
2. The MUTE1, and MUTE2 pins turn the output on when high and off when low. When the output is off, the outputs will be in the high-impedance
state.
The figure below shows the relationship between the channels and the MUTE pins and between the channels and the power supplies.
System Figure
MUTE1
CH1 (7 dB)
CH2 (7 dB)
MUTE2
CH3 (7 dB)
CH4 (14 dB)
VS1
VS2
A12681