la6544m Sanyo Semiconductor Corporation, la6544m Datasheet - Page 7

• Manufacturer Part Number: la6544m
• Description: Four-channel Bridge Btl Driver For Cd-rom
• Manufacturer: Sanyo Semiconductor Corporation

Gain Setting (Functions of the Input and Gain Adjustment Pins)
The figures present overviews of the V
1. Consider resistors (11 k , typical) to be inserted between the V
2. If the VG pins are not used, and only the V
Offset Voltage
This IC includes built-in level shifting circuits. For input to which V
to the voltage V
channel 4.
same as the operational amplifier noninverting input (V
dB for channels 1, 2, and 3 (amplifier units: 1 dB + BTL: 6 dB) and 14 dB for channel 4 (amplifier units: 8 dB +
BTL: 6 dB).
If the V
those resistors will result in equivalent circuit operation. However, the V
minimize the I/O gain temperature characteristics.
This catalog provides information as of April, 2000. Specifications and information herein are subject to
change without notice.
IN
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.
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pins are not used and 11 k external resistors are attached to the VG pins, input to the opposite ends of
SS
1/2 (V) for channels 1, 2, and 3, and the output is referenced to the voltage (V
V IN 1 to V IN 3
IN
VG1 to VG3
and VG pin circuits. (These are the same as the block diagrams.)
V IN 4
VG4
IN
pins are used, the BTL gain (across the V
LA6544M
11 k
11 k
IN +
).
IN
–
+
–
+
12.5 k
27.5 k
REF
and VG pins. This should be seen as being the
is applied as a reference, the output is referenced
IN
pins should be used and the gain set to
A12687
O
+
and V
SS
2 – V
O -
outputs) will be 7
BE
(0.7))/2 (V) for
PS No. 6295-7/7