MAX9716/MAX9717
Low-Cost, Mono, 1.4W BTL Audio
Power Amplifiers
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—3V Supply (continued)
(V
CC
= 3V, V
GND
= 0V, SHDN = V
CC
, T
A
= +25°C. C
BIAS
= 1µF, R
IN
= R
F
= 20kΩ (MAX9716/MAX9717A), IN+ = BIAS (MAX9716),
BTL/SE = GND (MAX9717_), R
L
= ∞ connected between OUT+ and OUT-. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Short-Circuit Current Limit I
SC
(Note 9) 1.1 A
Thermal Shutdown Threshold +160 °C
Thermal Shutdown Hysteresis 15 °C
250
Power-Up/Enable from Shutdown
Time (Note 10)
t
PU
C
BIAS
= 0.1µF 25
ms
Shutdown Time t
SHDN
5µs
Input Resistance R
IN
MAX9717B/C/D 12 20 28 kΩ
Note 1: Continuous power dissipation must also be observed.
Note 2: All specifications are tested at T
A
= +25°C. Specifications over temperature (T
A
= 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
CC
/2.
Note 5: V
OS
= V
OUT+
- V
OUT-.
Note 6: The amplifier input IN- is AC-coupled to GND through C
IN
.
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.
