Rainbow Electronics MAX98089 - Manual (Page 28)

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MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics
(V AVDD = V PVDD = V DVDD = V DVDDS1 = V DVDDS2 = 1.8V, V SPKLVDD = V SPKRVDD = 3.7V. Speaker loads (Z SPK ) connected between
SPK_P and SPK_N. Receiver load (R REC ) connected between RECP and RECN. Headphone loads (R HP ) connected from HPL or HPR
to HPGND. Line out (R LOUT ) connected from LOUTL or LOUTR to SPKLGND, C REF = 2.2FF, C MICBIAS = C REG = 1FF, C C1N-C1P =
1FF, C
HPVDD
= C
HPVSS
= 1FF. AV
MICPRE_
= +20dB, AV
MICPGA_
= 0dB, AV
DACATTN
= 0dB, AV
DACGAIN
= 0dB, AV
ADCLVL
= 0dB,
AV ADCGAIN = 0dB, AV PGAIN_ = 0dB, AV HP_ = 0dB, AV REC = 0dB, AV SPK_ = 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. T A
= +25NC, unless otherwise noted.)
Microphone to ADC
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
MAX98089 toc01
FREQUENCY (Hz)
THD+N RATIO (dB)
1k 100 10 10k
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
V
IN = 1V P-P
AV MICPRE_ = 0dB
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
MAX98089 toc04
FREQUENCY (Hz)
10k 1k 100
0
10 100k
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
-100
MCLK = 12.288MHz
LRCLK = 96kHz
NI MODE
V
IN = 1V P-P
AV
MICPRE_
= 0dB
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
MAX98089 toc02
FREQUENCY (Hz)
10k 1k 100
0
10 100k
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
V
IN = 1V P-P
AV MICPRE_ = 0dB
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
MAX98089 toc05
FREQUENCY (Hz)
THD+N RATIO (dB)
1k 100 10 10k
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
V
IN = 0.1V P-P
AV
MICPRE_
= +20dB
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
MAX98089 toc03
FREQUENCY (Hz)
10k 1k 100
0
10 100k
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
-100
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
V
IN = 1V P-P
AV MICPRE_ = 0dB
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (MIC TO ADC)
MAX98089 toc06
FREQUENCY (Hz)
THD+N RATIO (dB)
1k 100 10 10k
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
V
IN = 0.032V P-P
AV
MICPRE_
= +30dB