MAX9851ETM 데이터 시트보기 (PDF) -
MAX9851ETM Datasheet PDF : 0 Pages
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Stereo Audio CODECs with Microphone, DirectDrive
Headphones, Speaker Amplifiers, or Line Outputs
Typical Operating Characteristics
(AVDD = CPVDD = +3V, DVDD = DVDDS2 = +1.8V, PVDD = +3.3V, RHP = 32Ω, ZSPK = 8Ω + 10µH, RREC = 32Ω, ROUTL+ to ROUTL- =
ROUTR+ to ROUTR- = 10kΩ, C1 = 0.22µF, C2 = CVMREG = CVPREG = CMBIAS = CREF = 1µF, MCLK = 13MHz, all PGAs = 0dB,
HP/REC volume = -20.0dB, SPK volume = -20.4dB, line output gain = -0.4dB, fS = 48kHz for nonvoice mode, TA = TMIN to TMAX,
unless otherwise noted. Typical values are at TA = +25°C.)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO LINE OUT)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE IN TO ADC)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (INTERNAL MIC TO ADC)
10
VOUT = 2VP-P
RL = 10kΩ
fS = 48kHz
MAX9853
10
ADC INPUT VOLTAGE = 2VP-P (0dBFS)
1
10
ADC INPUT VOLTAGE = 2VP-P (0dBFS)
8kHz VOICE MODE
1
1
MIC GAIN = 0dB
0.1
RIGHT
LEFT
0.1
8kHz VOICE MODE
0.01
48kHz MASTER MODE
DC-BLOCKING FILTER OFF
0.1
MIC GAIN = 40dB
MIC GAIN = 20dB
0.01
0.01
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (INTERNAL MIC TO ADC)
10
ADC INPUT VOLTAGE = 2VP-P (0dBFS)
48kHz NONVOICE MODE
1
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE IN TO LINE OUT)
10
NO LOAD
MAX9853
1
0.001
10
100
1k
10k
FREQUENCY (Hz)
SPEAKER AMP EFFICIENCY
vs. OUTPUT POWER
90
80
RL = 8Ω 68µH
70
60
MIC GAIN = 40dB
0.1
0.1
MIC GAIN = 20dB
0.01
MIC GAIN = 0dB
LEFT
0.01
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
SPEAKER AMP EFFICIENCY
vs. OUTPUT POWER
90
80
RL = 8Ω 68µH
70
60
50
40
30
20
10
0
0
PVDD = 3.0V
fIN = 1kHz
1
2
3
4
OUTPUT POWER (W)
0.001
10
RIGHT
100
1k
10k
100k
FREQUENCY (Hz)
SPEAKER AMP OUTPUT POWER
vs. LOAD RESISTANCE
4.0
fIN = 1kHz
3.5
33µH IN SERIES
WITH RLOAD
3.0
THD+N = 1%
2.5
2.0
1.5
5.0V
1.0
3.3V
0.5
0
1
10
100
1000
LOAD RESISTANCE (Ω)
50
40
30
20
10
0
0
PVDD = 5V
fIN = 1kHz
1
2
3
4
OUTPUT POWER (W)
SPEAKER AMP OUTPUT POWER
vs. SUPPLY VOLTAGE (PVDD)
1.8
1.6
1.4
1.2
1.0
THD+N = 10%
0.8
0.6
0.4
0.2
0
2.5
THD+N = 1%
fIN = 1kHz
RL = 8Ω + 68µH
3.5
4.5
5.5
SUPPLY VOLTAGE (V)
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