MAX9853 Maxim Integrated Products, MAX9853 Datasheet - Page 22

• Manufacturer Part Number: MAX9853
• Description: (MAX9851 / MAX9853) Stereo Audio CODECs
• Manufacturer: Maxim Integrated Products

Stereo Audio CODECs with Microphone, DirectDrive
Headphones, Speaker Amplifiers, or Line Outputs
22
(AV
R
HP/REC volume = -20.0dB, SPK volume = -20.4dB, line output gain = -0.4dB, f
unless otherwise noted. Typical values are at T
OUTR+
-100
-120
-140
DD
-20
-80
-40
-60
20
15
10
20
18
16
14
12
10
______________________________________________________________________________________
0
5
0
8
6
4
2
0
= CPV
1.8
2.6
10
vs. SUPPLY VOLTAGE (ANALOG PATH)
to R
DAC INPUT = -60dBFS
HP AMP GAIN = 0dB
DV
HP AMP ENABLED
DACS DISABLED
ADCS DISABLED
MIC AMPS DISABLED
LINE IN TO AMPS
AMPS ENABLED ONE AT A TIME
RECEIVER ENABLED
DD
OUTR-
2.1
DD
2.8
AND DV
AV
100
vs. SUPPLY VOLTAGE
DD
= +3V, DV
(DAC TO HP AMP)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
WIDEBAND FFT
2.4
FREQUENCY (Hz)
= 10kΩ, C1 = 0.22µF, C2 = C
SUPPLY CURRENT
f
BOTH INTERFACES ON FULL
DUPLEX MONO VOICE WITH
STEREO AUDIO PLAYBACK
CLOCKING ZEROS INTO DACS
S
DDS2
3.0
= 8kHz VOICE + 48kHz
SPEAKER AMP ENABLED
2.7
1k
SUPPLY CURRENT
3.2
DD
3.0
= DV
10k
3.4
3.3
DDS2
100k
3.6
3.6
= +1.8V, PV
A
Typical Operating Characteristics (continued)
VMREG
= +25°C.)
20
15
10
20
15
10
30
25
20
15
10
5
0
5
0
5
1.8
1.8
2.6
DV
DV
DD
HP AMP ENABLED
f
STEREO RECORD ONLY
STEREO MIC
STEREO ADC
MIC INPUTS AC-GROUNDED
ONE DAC ENABLED
ONE ADC ENABLED
DIGITAL LOOPTHOUGH
LEFT MIC AMP ENABLED, INPUTS GROUNDED
MIC AND LINE CONNECTED TO ADC
8kHz VOICE MODE
AMPS ENABLED ONE AT A TIME
RECEIVER ENABLED
S
f
STEREO DAC PLAYBACK ONLY
CLOCKING ZEROS INTO THE DAC
S
= 48kHz
(VOICE RECORD AND PLAYBACK)
DD
DD
= 48kHz
= C
= +3.3V, R
2.1
2.1
2.8
AND DV
AND DV
AV
vs. SUPPLY VOLTAGE
vs. SUPPLY VOLTAGE
VPREG
vs. SUPPLY VOLTAGE
DD
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
2.4
2.4
SUPPLY CURRENT
DDS2
DDS2
3.0
= C
SPEAKER AMP ENABLED
HP
2.7
2.7
SUPPLY CURRENT
SUPPLY CURRENT
MBIAS
= 32Ω, Z
3.2
3.0
3.0
= C
3.4
S
3.3
3.3
SPK
= 48kHz for nonvoice mode, T
REF
= 8Ω + 10µH, R
3.6
3.6
3.6
= 1µF, MCLK = 13MHz, all PGAs = 0dB,
20
15
10
20
18
16
14
12
10
30
25
20
15
10
5
0
8
6
4
2
0
vs. SUPPLY VOLTAGE (DUAL DIGITAL PATH)
5
vs. SUPPLY VOLTAGE (STEREO PLAYBACK)
1.8
2.6
2.6
DV
DACS ENABLED
ADCS DISABLED
MIC AMPS DISABLED
CLOCKING ZEROS INTO DAC
48kHz MASTER MODE
AMPS ENABLED ONE AT A TIME
HP AMP ENABLED
RECEIVER ENABLED
S1 ENABLED (8kHz VOICE MODE)
STEREO DAC ENABLED (48kHz)
ONE ADC ENABLED
CLOCKING ZEROS INTO DAC
LEFT MIC AMP ENABLED, INPUTS GROUNDED
MIC AND LINE CONNECTED TO ADC
AMPS ENABLED ONE AT A TIME
HP AMP ENABLED
RECEIVER ENABLED
f
MONO MIC
MONO ADC
MONO DAC
CLOCKING ZEROS INTO DAC
S
REC
DD
= 48kHz VOICE MODE
2.1
2.8
AV
2.8
AND DV
AV
= 32Ω, R
vs. SUPPLY VOLTAGE
DD
DD
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
2.4
SUPPLY CURRENT
SUPPLY CURRENT
3.0
DDS2
3.0
A
= T
SPEAKER AMP ENABLED
SPEAKER AMP ENABLED
2.7
OUTL+
SUPPLY CURRENT
MIN
3.2
3.2
3.0
to T
to R
3.4
3.4
MAX
3.3
OUTL-
,
3.6
3.6
3.6
=