Rainbow Electronics MAX98088 - Manual (Page 42)

Stereo Audio Codec
with FLEXSOUND Technology
MAX98088
42
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.)
CROSSTALK vs. FREQUENCY
(DAC TO SPEAKER)
MAX98088 toc73
FREQUENCY (Hz)
CROSSTALK (dB)
10,000 1000 100
-70
-60
-50
-40
-30
-20
-10
0
-80
10 100,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
Z
SPK_ = 8I + 68µH
SOFTWARE TURN-ON/OFF RESPONSE
(DAC TO SPEAKER, VSEN = 0)
MAX98088 toc74
SCL
1V/div
SPEAKER
OUTPUT
1V/div
10ms/div
SOFTWARE TURN-ON/OFF RESPONSE
(DAC TO SPEAKER, VSEN = 1)
MAX98088 toc75
SCL
1V/div
SPEAKER
OUTPUT
1V/div
10ms/div
FFT, -60dBFS (DAC TO SPEAKERS)
MAX98088 toc76
FREQUENCY (kHz)
AMPLITUDE (dBV)
15,000 10,000 5000
-120
-100
-80
-60
-40
-20
0
20
-140
0 20,000
MCLK = 12.2888MHz
LRCLK = 48kHz
NI MODE
Z
SPK_ = 8I + 68µH
FFT, -60dBFS (DAC TO SPEAKERS)
MAX98088 toc77
FREQUENCY (kHz)
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
Z
SPK_ = 8I + 68µH
WIDEBAND FFT (DAC TO SPEAKER)
MAX98088 toc78
FREQUENCY (MHz)
AMPLITUDE (dBm)
10
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
1 100
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
Z
SPK_ = 8I + 68µH