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.)
GAIN vs. FREQUENCY (MIC TO ADC)
MAX98089
toc07
FREQUENCY (Hz)
NORMALIZED
GAIN
(dB)
1k
100
10
10k
0
10
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
VIN = 1VP-P
AVMICPRE_ = 0dB
MODE = 1
MODE = 0
-90
-80
-70
-60
-50
-40
-30
-20
-10
FFT, 0dBFS (MIC TO ADC)
MAX98089
toc10
FREQUENCY (kHz)
AMPLITUDE
(dBFS)
-160
-140
-120
-100
-80
-60
-40
-20
0
20
-180
0
3
2
1
4
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
AVMICPRE = 0dB
COMMON-MODE REJECTION
RATIO vs. FREQUENCY (MIC TO ADC)
MAX98089
toc08
FREQUENCY (Hz)
90
10
CMRR
(dB)
0
10
20
30
40
50
60
70
80
1k
100
10k
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
VIN = 1VP-P
CIN = 1F
AVPRE = 20dB
AVPRE = 30dB
AVPRE = 0dB
FFT, -60dBFS (MIC TO ADC)
MAX98089
toc11
-160
-140
-120
-100
-80
-60
-40
-20
0
-180
FREQUENCY (Hz)
3.5k
3k
2k 2.5k
1k 1.5k
500
04k
AMPLITUDE
(dBFS)
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
AVMICPRE_ = 0dB
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (MIC TO ADC)
MAX98089
toc09
FREQUENCY (Hz)
PSRR
(dB)
10k
1k
100
20
40
60
80
100
120
0
10
100k
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
AVMICPRE = 0dB
CIN = 1F
VRIPPLE = 200mVP-P
RIPPLE ON SPKLVDD, SPKRVDD
RIPPLE ON AVDD, DVDD, HPVDD
FFT, 0dBFS (MIC TO ADC)
MAX98089
toc12
FREQUENCY (kHz)
AMPLITUDE
(dBFS)
15
10
5
-120
-100
-80
-60
-40
-20
0
20
-140
020
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
AVMICPRE_ = 0dB
CIN = 1F
Maxim Integrated
29
MAX98089