MAX9867EWV+T Maxim Integrated Products, MAX9867EWV+T Datasheet - Page 34

• Manufacturer Part Number: MAX9867EWV+T
• Description: IC STEREO AUD CODEC LP 30WLP
• Manufacturer: Maxim Integrated Products
• Type: Stereo Audior

Specifications of MAX9867EWV+T

• 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: 30-WLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MAX9867EWV+T; MAX9867EWV+TTR

Ultra-Low Power Stereo Audio Codec
The MAX9867 incorporates both IIR (voice) and FIR
(audio) digital filters to accomodate a wide range of
audio sources. The IIR fiilters provide over 70dB of
Table 7. Digital Filtering Register
Table 8. IIR Highpass Digital Filters
34
Codec Filters
______________________________________________________________________________________
REGISTER
0x6 to 0x7
CODE
DVFLT
MODE
AVFLT
BITS
0x0
0x1
0x2
0x3
0x4
0x5
Digital Audio Filter Mode
0 = IIR Voice Filters
1 = FIR Audio Filters
ADC Digital Audio Filter
MODE = 0
Select the desired digital filter response from Table 8. See the Frequency Response graph in the Typical
Operating Characteristics section for details on each filter.
MODE = 1
0x0 = DC-blocking filter is disabled. Any other setting = DC-blocking filter is enabled.
DAC Digital Audio Filter
MODE = 0
Select the desired digital filter response from Table 8. See the Frequency Response graph in the Typical
Operating Characteristics section for details on each filter.
MODE = 1
0x0 = DC-blocking filter is disabled. Any other setting = DC-blocking filter is enabled.
MODE
B7
FILTER TYPE
Butterworth
Butterworth
Butterworth
Elliptical
Elliptical
Digital Filtering
B6
AVFLT
B5
INTENDED SAMPLE
RATE (kHz)
8 to 24
16
16
8
8
B4
stopband attenuation as well as selectable highpass fil-
ters. The FIR filters provide low-power consumption and
are linear phase to maintain stereo imaging. Table 7 is
the digital filtering register.
FUNCTION
Reserved
Disabled
B3
0
HIGHPASS CORNER
FREQUENCY (Hz)
B2
f
S
256
500
256
500
/240
DVFLT
B1
B0
217Hz NOTCH
Yes
Yes
No
No
No
REGISTER
ADDRESS
0x0A