Datasheet

MAX9768
10W Mono Class D Speaker
Amplifier with Volume Control
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (continued)
(V
PV
DD
= 12V, V
DD
= 3.3V, V
GND
= V
PGND
= 0, V
SHDN
= V
DD
, V
MUTE
= 0; Max volume setting; speaker load resistor connected
between OUT+ and OUT-, R
L
= ∞, unless otherwise noted. C
BIAS
= 2.2µF, C1 = C2 = 0.1µF, C
IN
= 0.47µF, R
IN
= 20kΩ, R
F
= 30kΩ,
SSM mode. Filterless modulation mode (see the
Functional Diagram/Typical Application Circuit ). T
A
= T
MIN
to T
MAX
, unless otherwise
noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
THERMAL PROTECTION
Thermal Shutdown
Threshold
150 °C
Thermal Shutdown
Hysteresis
15 °C
DIGITAL INPUTS (SCLK, SDA/VOL)
Input-Voltage High V
IH
0.7 x V
DD
V
Input-Voltage Low V
IL
0.3 x V
DD
V
Input High Leakage Current I
IH
V
IN
= V
DD
, T
A
= +25°C ±1 µA
Input Low Leakage Current I
IL
V
IN
= GND, T
A
= +25°C ±1 µA
Input Hysteresis 0.1 x V
DD
V
Input Capacitance C
IN
5pF
DIGITAL OUTPUTS (SDA/VOL)
Output High Current I
OH
V
OH
= V
DD
1µA
Output Low Voltage V
OL
I
OL
= 3mA 0.4 V
I
2
C TIMING CHARACTERISTICS (Figure 3)
Serial Clock f
SCL
400 kHz
Bus Free Time Between a
STOP and START
Condition
t
BUF
1.3 µs
Hold Time (Repeated)
START Condition
t
HD
,
STA
0.6 µs
Repeated START Condition
Setup Time
t
SU
,
STA
0.6 µs
STOP Condition Setup Time t
SU
,
STO
0.6 µs
Data Hold Time t
HD
,
DAT
0 0.9 µs
Data Setup Time t
SU
,
DAT
100 ns
SCL Clock Low Period t
LOW
1.3 µs
SCL Clock High Period t
HIGH
0.6 µs
Rise Time of SDA and SCL,
Receiving
t
R
(Note 4)
20 +
0.1Cb
300 ns
Fall Time of SDA and SCL,
Receiving
t
F
(Note 4)
20 +
0.1Cb
300 ns