MAX9856ETL+ Maxim Integrated Products, MAX9856ETL+ Datasheet - Page 17

• Manufacturer Part Number: MAX9856ETL+
• Description: IC CODEC AUDIO LP 40TQFN-EP
• Manufacturer: Maxim Integrated Products
• Type: Audio Codecr

Specifications of MAX9856ETL+

• Data Interface: Serial
• Resolution (bits): 18 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• S/n Ratio, Adcs / Dacs (db) Typ: 77 / 91
• Dynamic Range, Adcs / Dacs (db) Typ: 85 / 91
• Voltage - Supply, Analog: 1.71 V ~ 3.6 V
• Voltage - Supply, Digital: 1.71 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 40-WFQFN Exposed Pad
• Number Of Adc Inputs: 2
• Number Of Dac Outputs: 2
• Interface Type: I2C
• Resolution: 18 bit
• Operating Supply Voltage: 1.71 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Supply Current: 2.9 mA
• Thd Plus Noise: 82 dB
• Audio Codec Type: Stereo
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 2
• No. Of Output Channels: 2
• Adc / Dac Resolution: 18bit
• Adcs / Dacs Signal To Noise Ratio: 91dB
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10kΩ
DVDD
10kΩ
10kΩ
DVDD
1μF
1μF
1μF
29
24
25
27
26
23
30
21
22
2
3
1
SCL
LINEIN1
LINEIN2
AUXIN
LRCLK_A
LRCLK_D
BCLK
SDIN
SDOUT
IRQ
MCLK
SDA
39
______________________________________________________________________________________
AGND
1.71V TO 3.6V
20
CPVDD
DIGITAL AUDIO
CONTROL LOGIC
32
DGND
INTERFACE
TIMING AND
I
2
C SERIAL
PORT
-32dB TO +30dB
-32dB TO +30dB
-32dB TO +30dB
CPGND
PGA
PGA
PGA
4.7μF
18
DirectDrive Headphone Amplifiers
12
AVDD
FILTERING AND
FILTERING AND
1μF
LN1
LN2
AUXAC
AUXDC
DIGITAL
DIGITAL
GAIN
GAIN
4
PREG
0.1μF
1μF
Low-Power Audio CODEC with
INTERNAL REGULATORS
5
NREG
AUXDC
10μF
RIGHT
RIGHT
1μF
1.71V TO 3.6V
LEFT
LEFT
DAC
DAC
ADC
ADC
31
DACR
DVDD
DACL
MICR
MICL
LN1
LN2
LN1
LN2
AUTOMATIC GAIN CONTROL
6
MBIAS
1μF
RIGHT AUDIO
LEFT AUDIO
DACL
DACR
INPUT MIXER
INPUT MIXER
RIGHT ADC
OUTPUT
OUTPUT
LEFT ADC
MIXER
MIXER
1μF
REF
7
C1N
DVDDS2
28
17
MAX9856
4.7μF
AUXAC
LN1
LN2
MICL
MICR
AUXAC
LN1
LN2
MICL
MICR
C1
C1P
19
MICR
MICL
PGA
PGA
1μF
0 TO 20dB
AUXAC
0 TO 20dB
PVSS
CHARGE
16
PUMP
-73dB
-73dB
TO +6dB
TO +6dB
PGA
PGA
C2
4.7μF
SVSS
PREAMPLIFIER
PREAMPLIFIER
15
Functional Diagram
MICROPHONE
20dB
30dB
20dB
30dB
DETECTION
BIAS AND
0
0
JACK
HGNDSNS
LGNDSNS
JACKSNS
MICBIAS
MICGND
LOUTL
LOUTR
MICL
MICR
INLP
INLN
HPL
HPR
13
14
11
9
10
8
34
33
35
36
37
40
38
1μF
1μF
1μF
1μF
1μF
2.2kΩ
17