MAX9867ETJ+ Maxim Integrated Products, MAX9867ETJ+ Datasheet - Page 35

• Manufacturer Part Number: MAX9867ETJ+
• Description: IC STEREO AUD CODEC LP 32TQFN-EP
• Manufacturer: Maxim Integrated Products
• Type: Stereo Audior

Specifications of MAX9867ETJ+

• Data Interface: I²C, Serial
• Resolution (bits): 18 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 85 / 90
• Voltage - Supply, Analog: 1.65 V ~ 1.95 V
• Voltage - Supply, Digital: 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX9867 includes digital gain adjustment for the
playback and record paths. Independent gain adjust-
ment is provided for the two record channels. Sidetone
Table 9. Digital Gain Registers
Sidetone
DAC Level
ADC Level
REGISTER
DACM
DSTS
DVST
BITS
______________________________________________________________________________________
Digital Sidetone Source Mixer
00 = No sidetone is selected.
01 = Left ADC
10 = Right ADC
11 = Left + right ADC
Digital Sidetone Level Control
All gain settings are relative to the ADC input voltage.
Differential Headphone Output Mode
Capacitorless and Single-Ended Headphone Output Mode
DAC Mute Enable
0 = No mute
1 = Mute
SETTING
SETTING
B7
Ultra-Low Power Stereo Audio Codec
0
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
Digital Gain Control
DSTS
DACM
B6
AVL
GAIN (dB)
GAIN (dB)
-10
-12
-14
-16
-18
-11
-13
-15
-17
-19
-21
-23
Off
Off
-2
-4
-6
-8
-5
-7
-9
0
B5
0
DACG
B4
SETTING
SETTING
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
gain adjustment is also provided to set the sidetone
level relative to the playback level. Table 9 is the digital
gain registers.
FUNCTION
B3
GAIN (dB)
GAIN (dB)
-20
-22
-24
-26
-28
-30
-32
-34
-36
-38
-40
-25
-27
-29
-31
-33
-35
-37
-39
-41
-43
-45
DVST
B2
DACA
AVR
B1
SETTING
SETTING
0x1C
0x1D
0x1C
0x1D
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1E
0x1F
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1E
0x1F
—
—
B0
GAIN (dB)
GAIN (dB)
REGISTER
ADDRESS
-42
-44
-46
-48
-50
-52
-54
-56
-58
-60
-47
-49
-51
-53
-55
-57
-59
-61
-63
-65
—
—
0x0C
0x0D
0x0B
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