Continued from preceding page.
Parameter
Symbol
V
M
Pd max
Topr
Tstg
Conditions
Ratings
Unit
V
W
°C
°C
Mute pin voltage
Allowable power dissipation
Operating temperature
Storage temperature
13
0.9
* Mounted on PCB shown below
–20 to +75
–55 to +150
* PCB (20
×
30
×
1.5 mm glass epoxy resin)
Operating Conditions
at Ta = 25°C
Parameter
Symbol
V
CC
Conditions
Ratings
4 to 13
Unit
V
Recommended supply voltage
Electrical Characteristics
at Ta = 25°C, V
CC
= 7.5 V
Parameter
Symbol
I
CC
1
I
CC
2
V
OF
1
V
OF
2
I
B
V
BIN
V
IN
V
O
1
V
O
2
VG
SR
V
M
I
M
Conditions
min
typ
max
Unit
mA
mA
mV
mV
nA
V
V
V
V
dB
V/μs
V
μA
No-load current drain
Note 1
Note 2
Note 3, amplifiers 1 — 2, 7 — 8
Note 3, ampifiers 3 — 4, 5 — 6
20
40
26
60
60
Output offset voltage
–50
–50
+50
+50
500
Input bias current
Buffer input voltage range
Input voltage range
Output source voltage
Output sink voltage
Closed-circuit voltage gain
Slew rate
Mute on voltage
Mute pin inflow current
100
V
CC
–1.5
V
CC
–1.5
5.6
1.8
12
0.15
2
60
1.5
1.0
5.0
Note 4, R
L
= 8.0
Note 5, R
L
= 8.0
Bridge amplifier
2.4
Note 6
Note 6
Notes:
1.
2.
3.
4.
5.
6.
Mute off and buffer in assume 1/2 V
CC
V.
Mute off and buffer in assume 0.5 V.
Represents the interoutput difference.
Voltage relative to ground (source) when an 8
load is connected between bridge amplifier outputs.
Voltage relative to ground (sink) when an 8
load is connected between bridge amplifier outputs.
Muting is activated when high, and the amplifier outputs 3 and 4 are off.
Test Method
SW No.
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
ICC
1
ICC
2
VOF
1,2
IB
VO
1
VO
2
VM
IM
VG
a
ON
ON
OFF
OFF
b
b
OFF
ON
OFF
OFF
b
OFF
OFF
a
ON
ON
OFF
OFF
b
b
OFF
ON
OFF
OFF
a
OFF
OFF
b
ON
ON
OFF
OFF
b
b
OFF
ON
OFF
OFF
b
OFF
OFF
b
OFF
OFF
ON
OFF
a
a
ON
OFF
OFF
OFF
b
OFF
OFF
b
OFF
ON
OFF
ON
b
a
OFF
OFF
OFF
ON
b
OFF
OFF
b
OFF
OFF
OFF
OFF
a
b
OFF
ON
ON
ON
b
OFF
OFF
b
ON
ON
OFF
OFF
b
b
OFF
ON
OFF
OFF
b
OFF
OFF
b
ON
ON
OFF
OFF
b
b
OFF
ON
OFF
OFF
b
OFF
OFF
b
ON
ON
OFF
OFF
b
b
OFF
ON
OFF
OFF
b
ON
ON
1.
2.
For I
CC
1 and 2, measure the inflow current on the V
CC
pin.
For V
OF
1 and 2, measure the voltage between pins 3 and 4 (amplifiers 1 and 2), pins 27 and 28 (amplifiers 7 and 8), pins 12
and 13 (amplifiers 3 and 4), and pins 18 and 19 (amplifiers 5 and 6).
For I
B
, measure the voltage across the 100 k
resistor (I
B
= V/100 k
).
For V
O
1 and 2, measure each output voltage at input voltages 1.75 V and 5.75 V, respectively.
V
M
is the mute pin (pin 7) voltage when the output goes off.
I
M
is the mute pin (pin 7) inflow current when the output goes off.
For VG, measure the voltage between pins 3 and 4 (amplifiers 1 and 2), pins 27 and 28 (amplifiers 7 and 8), pins 12 and 13
(amplifiers 3 and 4), and pins 18 and 19 (amplifiers 5 and 6) at f = 1 kHz, and use the following formula:
VG = 20 log V
O
/V
1
dB.
3.
4.
5.
6.
7.
LA6537M
No.5231-2/5