max9744 Maxim Integrated Products, Inc., max9744 Datasheet - Page 4

• Manufacturer Part Number: max9744
• Description: 20w Stereo Class D Speaker Amplifier With Volume Control
• Manufacturer: Maxim Integrated Products, Inc.

20W Stereo Class D Speaker Amplifier
with Volume Control
ELECTRICAL CHARACTERISTICS (continued)
(PVDD = 12V, V
OUT_+ and OUT_-, R
spectrum mode, filterless modulation mode, see the Functional Diagrams/Typical Application Circuits. T
erwise noted. Typical values are at T
4
Crosstalk
Power-Supply Rejection Ratio
SYNC Frequency
Class D Switching Frequency
SYNC Frequency Lock Range
Minimum SYNC Frequency Lock
Duty Cycle
Maximum SYNC Frequency Lock
Duty Cycle
Gain Matching
Click-and-Pop Level
VOLUME CONTROL
VOL Input Leakage Current
Input Hysteresis
9.5dB Gain Voltage
Full Mute Voltage
Full Mute Attenuation
DIGITAL INPUTS/OUTPUT (SHDN, MUTE, ADDR1, ADDR2, SCLK, SDA/VOL)
Input-Voltage High
Input-Voltage Low
Input Leakage Current
Input Hysteresis
Input Capacitance
Output-Voltage Low
_______________________________________________________________________________________
PARAMETER
DD
= 3.3V, GND = PGND = 0V, V
L
= ∞, unless otherwise stated, C
A
SYMBOL
= +25°C.) (Note 1)
PSRR
f
SYNC
K
f
V
C
V
I
V
SW
LK
CP
IH
IL
IN
IL
1kHz
20Hz to 20kHz
V
MUTE = high
PV
f = 1kHz, V
f = 1kHz, V
SYNC = GND
SYNC = unconnected
SYNC = V
SYNC = GND
SYNC = unconnected
SYNC = V
Full volume (ideal matching for R
Peak voltage, 32
samples/second,
A-weighted (Note 4)
DC volume control mode
DC volume control mode
DC volume control mode
f = 1kHz, relative to 9.5dB setting
SCLK, SDA/VOL
I
OL
MUTE
DD
DD
BOOT_
= 3mA
= 2.7V to 3.6V, T
= 4.5V to 14V
= 0V; max volume setting; all speaker load resistors connected between
DD
DD
= 0.1µF, C
RIPPLE
RIPPLE
(spread-spectrum mode)
(spread-spectrum mode)
CONDITIONS
= 100mV
= 200mV
BIAS
A
= 25°C,
Into shutdown
Out of shutdown
Into mute
Out of mute
= 2.2µF, C
P-P
P-P
on V
on PVDD
IN
DD
and R
IN
= 0.47µF, R
F
)
0.7 x V
1020
1280
1000
MIN
255
320
50
IN
DD
A
= 20kΩ, R
0.1 x V
0.9 x V
0.1 x V
= T
1200
1440
1200
TYP
-115
±30
300
360
300
0.2
-43
-43
-46
-57
±6
±5
85
68
68
83
70
75
40
60
11
5
MIN
DD
DD
DD
0.3 x V
to T
F_
MAX
1355
1640
1600
338
410
= 20kΩ, spread-
MAX
0.4
±1
DD
, unless oth-
UNITS
dBV
kHz
kHz
kHz
mV
dB
dB
dB
dB
µA
µA
pF
%
%
V
V
V
V
V
V