MAX9853ETM+T Maxim Integrated Products, MAX9853ETM+T Datasheet - Page 64

• Manufacturer Part Number: MAX9853ETM+T
• Description: IC CODEC AUDIO STEREO 48TQFN
• Manufacturer: Maxim Integrated Products
• Type: Stereo Audior

Specifications of MAX9853ETM+T

• Data Interface: Serial
• Resolution (bits): 18 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• S/n Ratio, Adcs / Dacs (db) Typ: 81.5 / 88
• Dynamic Range, Adcs / Dacs (db) Typ: 82 / 87.5
• Voltage - Supply, Analog: 2.6 V ~ 3.3 V
• Voltage - Supply, Digital: 1.7 V ~ 3.3 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Stereo Audio CODECs with Microphone, DirectDrive
Headphones, Speaker Amplifiers, or Line Outputs
The MAX9851/MAX9853 are capable of a wide variety of
operating modes. To ease the process of determining
the appropriate settings for a particular operating mode,
several typical modes of operation are detailed below.
Typical cellular phone operation requires both play-
back and record functions, and audio data to be sent
and received with the cell-phone communications
chipset. Table 41 lists an example of this configuration
and Table 42 lists the corresponding register settings in
the proper programming sequence.
Table 42. I
64
Program 0x03 last for proper soft-start
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REGISTER (hex)
Voiceband Playback and Voiceband Record
0x0A
0x0B
0x0C
0x0D
0x04
0x05
0x06
0x07
0x08
0x09
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x00
0x01
0x02
2
C Register Settings for Voiceband Playback and Record Voiceband Mode
Applications Information
Typical Operating Modes
VALUE (hex)
0x00
0x00
0x00
0x30
0x20
0x00
0x20
0x90
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x14
0x00
N/A
N/A
Read-only status register
Read-only status register
No interrupts are enabled
Configure for slave mode
Disable secondary digital audio interface
No configuration necessary
Configure for a 13MHz MCLK and voiceband filtering on both the ADC
and DAC
Route digital audio from the primary interface to the left DAC
No configuration necessary
Route the left microphone signal to the ADC
Route the left DAC output to the receiver amplifier and enabled sidetone
No configuration necessary
No configuration necessary
No configuration necessary
No configuration necessary
Configure the left microphone input for +20dB of gain, adjust as
appropriate
No configuration necessary
Select the internal microphone interface and disable external microphone
bias circuitry
Sidetone PGA, adjust as necessary
Configure left output gain to -20dB, adjust as necessary
Table 41. Example Voiceband Playback
and Voiceband Record Configuration
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13MHz MCLK
8kHz voice mode for incoming and outgoing data
DAC and ADC enabled for mono data
Digital audio input and output on the primary digital audio
interface operating in slave mode
Voice filter activated for both DAC and ADC
Audio output on receiver amplifier
Audio input on internal microphone input
DESCRIPTION