Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
(VAVDD = VPVDD = VDVDD = VDVDDS1 = VDVDDS2 = 1.8V, VSPKLVDD = VSPKRVDD = 3.7V. Speaker loads (ZSPK) connected between
SPK_P and SPK_N. Receiver load (RREC) connected between RECP and RECN. Headphone loads (RHP) connected from HPL or HPR
to HPGND. Line out (RLOUT) connected from LOUTL or LOUTR to SPKLGND, CREF = 2.2FF, CMICBIAS = CREG = 1FF, CC1N-C1P =
1FF, CHPVDD = CHPVSS = 1FF. AVMICPRE_ = +20dB, AVMICPGA_ = 0dB, AVDACATTN = 0dB, AVDACGAIN = 0dB, AVADCLVL = 0dB,
AVADCGAIN = 0dB, AVPGAIN_ = 0dB, AVHP_ = 0dB, AVREC = 0dB, AVSPK_ = 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA
= +25NC, unless otherwise noted.)
Analog Loopback
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
(LINE TO ADC TO DAC TO HEADPHONE)
MAX98089
toc29
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
RHP = 32I
CIN = 10F
POUT = 0.02W
POUT = 0.01W
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
(LINE TO ADC TO DAC TO HEADPHONE)
MAX98089
toc30
FREQUENCY (Hz)
10k
1k
100
10
100k
THD+N
RATIO
(dB)
0
-90
-80
-70
-60
-50
-40
-30
-20
-10
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
RHP = 32I
CIN = 10F
POUT = 0.02W
POUT = 0.01W
FFT, 0dBFS
(LINE TO ADC TO DAC TO HEADPHONE)
MAX98089
toc31
AMPLITUDE
(dBV)
-100
-80
-60
-40
-20
0
20
-120
FREQUENCY (kHz)
18
16
246
10 12
814
020
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
RHP = 32I
CIN = 1F
FFT, -60dBFS (LINE TO ADC TO DAC
TO HEADPHONE)
MAX98089
toc32
AMPLITUDE
(dBV)
-120
-100
-80
-60
-40
-20
0
-140
FREQUENCY (kHz)
15
10
5
020
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
RHP = 32I
CIN = 1F
FFT, 0dBFS (LINE TO ADC TO DAC
TO HEADPHONE)
MAX98089
toc33
FREQUENCY (kHz)
AMPLITUDE
(dBV)
15
10
5
-120
-100
-80
-60
-40
-20
0
20
-140
020
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
RHP = 32I
CIN = 1F
FFT, -60dBFS (LINE TO ADC TO DAC
TO HEADPHONE)
MAX98089
toc34
AMPLITUDE
(dBV)
-120
-100
-80
-60
-40
-20
0
-140
FREQUENCY (kHz)
15
10
5
020
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
RHP = 32I
CIN = 1F
Maxim Integrated
34
MAX98089