Rainbow Electronics MAX98088 - Manual (Page 34)

Stereo Audio Codec
with FLEXSOUND Technology
MAX98088
34
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. R HP = J, R REC = J, Z SPK = J, 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.)
Analog Loopback
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
(LINE TO ADC TO DAC TO HEADPHONE)
MAX98088 toc29
FREQUENCY (Hz)
10,000 1000 100
0
10 100,000
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
R
HP = 32I
C IN = 1µF
P OUT = 0.020W
P OUT = 0.01W
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
(LINE TO ADC TO DAC TO HEADPHONE)
MAX98088 toc30
-70
-60
-50
-40
-30
-20
-10
0
-80
FREQUENCY (Hz)
10,000 1000 100 10 100,000
THD+N RATIO (dB)
P OUT = 0.020W
P OUT = 0.01W
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
R
HP = 32I
C IN = 1µF
FFT, 0dBFS (LINE TO ADC TO DAC
TO HEADPHONE)
MAX98088 toc31
FREQUENCY (kHz)
AMPLITUDE (dBV)
15,000 10,000 5000
-120
-100
-80
-60
-40
-20
0
20
-140
0 20,000
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
R HP = 32I
C IN = 1µF
FFT, -60dBFS (LINE TO ADC TO DAC
TO HEADPHONE)
MAX98088 toc32
AMPLITUDE (dBV)
-120
-100
-80
-60
-40
-20
0
-140
FREQUENCY (Hz)
15,000 10,000 5000 0 20,000
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
R HP = 32I
C IN = 1µF
FFT, 0dBFS (LINE TO ADC TO DAC
TO HEADPHONE)
MAX98088 toc33
FREQUENCY (Hz)
AMPLITUDE (dBV)
15,000 10,000 5000
-120
-100
-80
-60
-40
-20
0
20
-140
0 20,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
R HP = 32I
C IN = 1µF
FFT, -60dBFS (LINE TO ADC TO DAC
TO HEADPHONE)
MAX98088 toc34
AMPLITUDE (dBV)
-120
-100
-80
-60
-40
-20
0
-140
FREQUENCY (Hz)
15,000 10,000 5000 0 20,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
R HP = 32I
C IN = 1µF