MAX9768BETG+ Maxim Integrated Products, MAX9768BETG+ Datasheet - Page 17

IC AMP AUDIO 10W MONO D 24TQFN

MAX9768BETG+

Manufacturer Part Number
MAX9768BETG+
Description
IC AMP AUDIO 10W MONO D 24TQFN
Manufacturer
Maxim Integrated Products
Type
Class Dr
Datasheet

Specifications of MAX9768BETG+

Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
10W x 1 @ 8 Ohm
Voltage - Supply
4.5 V ~ 14 V
Features
Depop, I²C, Mute, Short-Circuit and Thermal Protection, Shutdown, Volume Control
Mounting Type
Surface Mount
Package / Case
24-TQFN Exposed Pad
Product
Class-D
Output Power
10 W
Thd Plus Noise
0.08 %
Operating Supply Voltage
4.5 V to 14 V
Supply Current
7 mA
Maximum Power Dissipation
2.22 W
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Supply Voltage (max)
14 V
Supply Voltage (min)
4.5 V
Amplifier Class
D
No. Of Channels
1
Supply Voltage Range
4.5V TO 14V
Load Impedance
8ohm
Operating Temperature Range
-40°C To +85°C
Amplifier Case Style
TQFN
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Table 3. Slave Address Block
Table 4. Slave Address
A write to the MAX9768 includes transmission of a
START condition, the slave address with the R/W bit set
to 0 (see Table 3), one byte of data to the command
register, and a STOP condition. Figure 6 illustrates the
proper format for one frame.
The command register is used to control the volume
level of the speaker amplifier. The two MSBs (D7 and
D6) should be set to 00 to choose the speaker register.
V5–V0 is the volume control data that will be written into
the addresses register to set the volume level (see
Tables 5 and 6).
For a write byte operation, the master sends a single byte
to the slave device (MAX9768). This is done as follows:
1) The master sends a start condition.
2) The master sends the 7-bit slave ID plus a write bit
3) The addressed slave asserts an ACK on the data
4) The master sends 8 data bits.
5) The active slave asserts an ACK (or NACK) on the
6) The master generates a stop condition.
SA7 (MSB)
ADDR2
(low).
line.
data line.
1
0
0
1
1
______________________________________________________________________________________
ADDR1
SA6
0
0
1
0
1
SA5
SLAVE ADDRESS
0
Write Data Format
Volume Control
1001001_
1001010_
1001011_
Disabled
Amplifier with Volume Control
SA4
10W Mono Class D Speaker
1
Figure 5. Acknowledge
Figure 6. Write Data Format Example
SCL
SDA
WRITE BYTE FORMAT
SA3
S
CONDITION
0
START
SLAVE ADDRESS:
EQUIVALENT TO CHIP-
SELECT LINE OF A 3-
WIRE INTERFACE.
SLAVE ADDRESS
7 bits
1
ADDR2
SA2
2
WR
0
ACK
ADDR1
NOT ACKNOWLEDGE
DATA BYTE: GIVES A COMMAND.
SA1
ACKNOWLEDGE
8 bits
DATA
ACKNOWLEDGMENT
8
CLOCK PULSE FOR
SA0 (LSB)
9
ACK
R/W
P
17

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