max9744 Maxim Integrated Products, Inc., max9744 Datasheet - Page 5

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

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
Note 1: All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.
Note 2: See the Gain-Setting Resistors section.
Note 3: Measured on the MAX9744 Evaluation Kit.
Note 4: Testing performed with an 8Ω resistive load connected across BTL output. Mode transitions are controlled by SHDN or
Note 5: A master device must provide a hold time of at least 300ns for the SDA signal in order to bridge the undefined region of the
Note 6: C
DIGITAL INPUT (SYNC)
Input-Voltage High
Input-Voltage Low
SYNC Input Leakage
DIGITAL OUTPUT (SYNCOUT)
Output-Voltage High
Output-Voltage Low
Rise/Fall Time
THERMAL PROTECTION
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
I
Serial Clock
Bus Free Time Between a STOP
and a START Condition
Hold Time (Repeated) START
Condition
Repeated START Condition
Setup Time
STOP Condition Setup Time
Data Hold Time
Data Setup Time
SCL Clock Low Period
SCL Clock High Period
Rise Time of SDA and SCL,
Receiving
Fall Time of SDA and SCL,
Receiving
Pulse Width of Spike Suppressed
Capacitive Load for Each Bus
Line
2
C TIMING CHARACTERISTICS (Figure 3)
MUTE pin, respectively.
SCL’s falling edge.
B
PARAMETER
= total capacitance of one bus line in pF.
DD
= 3.3V, GND = PGND = 0V, V
_______________________________________________________________________________________
L
= ∞, unless otherwise stated, C
20W Stereo Class D Speaker Amplifier
A
V
V
SYNCOUTIH
SYMBOL
SYNCOUTIL
= +25°C.) (Note 1)
V
V
t
t
t
I
t
t
HD, STA
SU, STO
SYNCIN
SU, STA
HD,DAT
SU,DAT
SYNCIH
t
SYNCIL
t
f
t
HIGH
LOW
SCL
BUF
t
C
t
t
SP
R
F
B
I
I
C
(Note 5)
(Note 6)
(Note 6)
SOURCE
SINK
MUTE
L
= 10pF
BOOT_
= 1mA
= 0V; max volume setting; all speaker load resistors connected between
= 1mA
= 0.1µF, C
CONDITIONS
BIAS
with Volume Control
= 2.2µF, C
IN
= 0.47µF, R
0.1C
0.1C
V
±7.5
20 +
20 +
MIN
100
2.3
0.3
1.3
0.6
0.6
0.6
1.3
0.6
DD
0
0
B
B
IN
-
A
= 20kΩ, R
= T
+165
TYP
50
15
MIN
to T
F_
MAX
±13
400
300
300
400
= 20kΩ, spread-
MAX
0.8
0.3
0.9
50
, unless oth-
UNITS
V/µs
kHz
µA
pF
°C
°C
µs
µs
µs
µs
µs
ns
µs
µs
ns
ns
ns
V
V
V
V
5