U4083B

Preliminary Information

TELEFUNKEN Semiconductors

Rev. A2, 07-Apr-97

3 (11)

Pin 6: Supply and power dissipation

Power dissipation is shown in figures 8 to 10 for different

loads. Distortion characteristics are given in figures 11 to

13.

+

T

R

thJA

where

Power dissipated within the IC in a given application is

found from the following equation:

Operating range of the integrated circuit is defined with

a peak operating load current of

"200 mA (figures 8 to

13). It is further specified with respect to different loads

in figure 14. The left (ascending) portion of each of the

three curves is defined by the power level at which 10%

distortion occurs. The center flat portion of each curve is

defined by the maximum output current capability of the

integrated circuit. The right (descending) portion of each

curve is defined by the maximum internal power dissipa-

tion of the IC at 25

°C. At higher ambient temperatures,

the maximum load power must be reduced according to

the above mentioned equation.

Layout Considerations

Normally a snubber is not needed at the output of the IC,

unlike many other audio amplifiers. However, the PC

board layout, stray capacitances, and the manner in which

the speaker wires are configured, may dictate otherwise.

Generally the speaker wires should be twisted tightly, and

be not more than a few cm (or inches) in length.

Absolute Maximum Ratings

Parameters

Symbol

Value

Unit

Supply voltage

Pin 6

–1.0 to +18

V

Voltages

Pins 1, 2, 3 and 4

Disabled

Pins 5 and 8

–1.0 to (VS +1.0)

–1.0 to (VS +1.0)

V

V

Output current

Pins 5 and 8

"250

mA

Junction temperature

+140

°C

Storage temperature range

–55 to +150

°C

Ambient temperature range

–20 to +70

°C

SO8

440

mW

Thermal Resistance

Parameters

Symbol

Value

Unit

Junction ambient

SO8

180

K/W

Operation Recommendation

Parameters

Symbol

Value

Unit

Supply voltage

Pin 6

2 to 16

V

Load impedance

Pins 5 to 8

8.0 to 100

W

Load current

"200

mA

Differential gain (5.0 kHz bandwidth)

DG

0 to 46

dB

Voltage @ CD Pin 1

VS

V

Ambient temperature range

–20 to +70

°C