MAX9856ETL+ Maxim Integrated Products, MAX9856ETL+ Datasheet - Page 11

• 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

(V
=1µF, V
AVDD
0.001
0.001
0.001
0.01
0.01
0.01
100
0.1
0.1
0.1
10
10
10
1
1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
10E+0
TOTAL HARMONIC DISTORTION PLUS NOISE
10
TOTAL HARMONIC DISTORTION + NOISE
0
AVPRE
= V
HP GAIN = +5.5dB
R
HP GAIN = +5.5dB
R
ADC
MIC PREAMP = +20dB
MIC GAIN = 0dB
L
L
vs. FREQUENCY (INTMIC TO ADC)
vs. OUTPUT POWER (DAC TO HP)
= 32Ω
= 16Ω
CPVDD
5mW
5
OUT
vs. FREQUENCY (DAC TO HP)
100E+0
= +20dB, C
1kHz
= -3dBFS
100
10
OUTPUT POWER (mW)
20mW
= V
FREQUENCY (Hz)
FREQUENCY (Hz)
15
______________________________________________________________________________________
DVDDS2
1E+3
20
1k
MICBIAS
20kHz
25
= V
10E+3
10kHz
10k
30
DVDD
= 1µF, V
35
100E+3
DirectDrive Headphone Amplifiers
= 1.8V, R
100k
40
AVMICPGA
0.001
0.001
0.001
HP
0.01
0.01
0.01
100
Low-Power Audio CODEC with
0.1
0.1
0.1
10
10
10
1
1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
10E+0
TOTAL HARMONIC DISTORTION PLUS NOISE
= 32Ω, R
10
0
TOTAL HARMONIC DISTORTION + NOISE
= 0dB, MCLK = 12.288MHz, DRATE = 10, T
HP GAIN = +5.5dB
R
V
R
ADC
MIC PREAMP = +30dB
MIC GAIN = 0dB
vs. FREQUENCY (DAC TO LINE OUT)
L
OUT
L
vs. OUTPUT POWER (DAC TO HP)
vs. FREQUENCY (INTMIC TO ADC)
= 16Ω
= 10kΩ
OUT
= 2V
10
100E+0
1kHz
= -3dBFS
LINE
100
P-P
OUTPUT POWER (mW)
20
FREQUENCY (Hz)
FREQUENCY (Hz)
= 10kΩ, C1 = 4.7µF, C2 = 4.7µF, C
1E+3
30
1k
Typical Operating Characteristics
40
10E+3
10k
10kHz
20Hz
50
100E+3
100k
60
0.001
0.001
0.01
0.01
100
0.1
0.1
10
10
10
1
1
1
A
10E+0
TOTAL HARMONIC DISTORTION PLUS NOISE
10
= +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION + NOISE
1
HP GAIN = +5.5dB
R
REF
THD+N = 10%
L
vs. FREQUENCY (LINE IN TO ADC)
= 32Ω
5mW
vs. FREQUENCY (DAC TO HP)
= C
100E+0
100
vs. HEADPHONE LOAD
20mW
HEADPHONE LOAD (Ω)
MBIAS
THD+N = 1%
10
FREQUENCY (Hz)
FREQUENCY (Hz)
POWER OUT
1E+3
= C
1k
PREG
100
10E+3
10k
= C
f
IN
= 1kHz
NREG
100E+3
1000
100k
11