Typical operating characteristics (continued) – Rainbow Electronics MAX98089 User Manual
Page 40
���������������������������������������������������������������� Maxim Integrated Products 40
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
(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.)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
MAX98089 toc58
OUTPUT POWER (W)
THD+N RATIO (dB)
1.5
2.0
1.0
0.5
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
0
V
SPK_VDD
= 4.2V
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
Z
SPK_
= 4I + 33µH
AV
SPK_VOL
= +8dB
f = 100Hz
f = 1000Hz
f = 6000Hz
2.5
MAX98089 toc59
OUTPUT POWER (W)
1.8
1.6
1.2 1.4
0.4 0.6 0.8 1.0
0.2
0
2.0
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
THD+N RATIO (dB)
-80
-70
-60
-50
-40
-30
-20
-10
-90
0
V
SPK_VDD
= 3.7V
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
Z
SPK_
= 4I + 33µH
AV
SPK_VOL
= +8dB
f = 100Hz
f = 1000Hz
f = 6000Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
MAX98089 toc60
OUTPUT POWER (W)
1.0
0.8
0.2
0.4
0.6
0
1.2
V
SPK_VDD
= 3.0V
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
Z
SP_
= 4I + 33µH
AV
SPK_
= +8dB
f = 6000Hz
f = 1000Hz
f = 100Hz
THD+N RATIO (dB)
-80
-70
-60
-50
-40
-30
-20
-10
-90
0
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO SPEAKER)
MAX98089 toc61
FREQUENCY (Hz)
THD+N RATIO (dB)
10k
1k
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
100
100k
V
SPK_VDD
= 4.2V
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
Z
SP_
= 8I + 68µH
AV
SPK_
= +8dB
P
OUT
= 0.25W
P
OUT
= 0.55W
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO SPEAKER)
MAX98089 toc62
FREQUENCY (Hz)
THD+N RATIO (dB)
10k
1k
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
100
100k
V
SPK_VDD
= 3.7V
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
Z
SPK_
= 8I + 68µH
AV
SPK_
= +8dB
P
OUT
= 0.55W
P
OUT
= 0.25W
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO SPEAKER)
MAX98089 toc63
FREQUENCY (Hz)
THD+N RATIO (dB)
10k
1k
-70
-60
-50
-40
-30
-20
-10
0
-80
100
100k
V
SPK_VDD
= 4.2V
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
Z
SPK_
= 4I + 33µH
AV
SPK_
= +8dB
P
OUT
= 0.55W
P
OUT
= 0.25W