Rainbow-electronics MAX9717 Manual de usuario descargar pdf (Pagina 4)

MAX9716/MAX9717

Low-Cost, Mono, 1.4W BTL Audio Power

Amplifiers

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—3V Supply (continued)

= 3V, GND = 0, SHDN = V

, T

= +25°C. C

BIAS

= 1µF, R

= R

= 20kΩ (MAX9716/MAX9717A), IN+ = BIAS (MAX9716),

BTL/SE = GND (MAX9717_), R

= ∞ connected between OUT+ and OUT-. Typical values are at T

= +25°C.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Short-Circuit Current Limit

(Note 9) 1.1 A

Thermal Shutdown Threshold

+160

°C

Thermal Shutdown Hysteresis 15 °C

250

Power-Up/Enable from Shutdown

Time (Note 10)

BIAS

= 0.1µF 25

Shutdown Time t

SHDN

5µs

Input Resistance R

MAX9717B/C/D 12 20 28 kΩ

Note 1: Continuous power dissipation must also be observed.

Note 2: All specifications are tested at T

= +25°C. Specifications over temperature (T

= T

MIN

to T

MAX

) are not production tested,

and guaranteed by design.

Note 3: Quiescent power-supply current is specified and tested with no load. Quiescent power-supply current depends on the off-

set voltage when a practical load is connected to the amplifier.

Note 4: Common-mode bias voltage is the voltage on BIAS and is nominally V

/2.

Note 5: V

= V

OUT+

- V

OUT-.

Note 6: The amplifier input IN- is AC-coupled to GND through C

Note 7: Output power is specified by a combination of a functional output current test and characterization analysis.

Note 8: Measurement bandwidth for THD+N is 22Hz to 22kHz.

Note 9: Extended short-circuit conditions result in a pulsed output.

Note 10: Time for V

OUT

to rise to 50% of final DC value.

1 2 3 4 5 6 7 8 9 ... 18 19

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Rainbow-electronics MAX9717 Manual de usuario Pagina 4

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