Stereo Audio CODEC
with FlexSound Technology
MAX9888
34
Typical Operating Characteristics (continued)
(VAVDD = VHPVDD = 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 GND. RHP = J, RREC = J, ZSPK = J, CREF = 2.2FF, CMICBIAS = CPREG = CREG = 1FF, CC1N-C1P = 1FF, CHPVSS
= 1FF. AVMICPRE_ = +20dB, AVMICPGA_ = 0dB, AVDACATTN = 0dB, AVDACGAIN = 0dB, AVADCLVL = 0dB, AVADCGAIN = 0dB,
AVPGAIN_ = 0dB, AVPGAOUT_ = 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)
MAX9888
toc27
FREQUENCY (Hz)
THD+N
RATIO
(dB)
10,000
1000
100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10
100,000
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
RHP = 32I, CIN = 1F
POUT = 0.025W
POUT = 0.01W
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
(LINE TO ADC TO DAC TO HEADPHONE )
MAX9888
toc28
FREQUENCY (Hz)
THD+N
RATIO
(dB)
10,000
1000
100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10
100,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
RHP = 32I, CIN = 1F
POUT = 0.025W
POUT = 0.01W
FFT, 0dBFS
(LINE TO ADC TO DAC TO HEADPHONE)
MAX9888
toc29
FREQUENCY (Hz)
AMPLITUDE
(dBV)
15,000
10,000
5000
-120
-100
-80
-60
-40
-20
0
-140
0
20,000
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
RHP = 32I
FFT, -60dBFS
(LINE TO ADC TO DAC TO HEADPHONE)
MAX9888
toc30
FREQUENCY (Hz)
AMPLITUDE
(dBV)
15,000
10,000
5000
-120
-100
-80
-60
-40
-20
0
-140
0
20,000
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
RHP = 32I
FFT, 0dBFS
(LINE TO ADC TO DAC TO HEADPHONE)
toc31
FREQUENCY (Hz)
AMPLITUDE
(dBV)
15,000
10,000
5000
-120
-100
-80
-60
-40
-20
0
-140
0
20,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
RHP = 32I
FFT, -60dBFS
(LINE TO ADC TO DAC TO HEADPHONE)
MAX9888
toc32
FREQUENCY (Hz)
AMPLITUDE
(dBV)
15,000
10,000
5000
-120
-100
-80
-60
-40
-20
0
-140
0
20,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
RHP = 32I