Rainbow Electronics MAX98088 - Manual (Page 46)

Stereo Audio Codec
with FLEXSOUND Technology
MAX98088
46
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.)
GAIN vs. FREQUENCY
(DAC TO HEADPHONE)
MAX98088 toc95
FREQUENCY (Hz)
NORMALIZED GAIN (dBrA)
10,000 1000 100
-70
-60
-50
-40
-30
-20
-10
0
10
-80
10 100,000
MODE = 1
MODE = 0
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
R
HP = 32I
PVDD CURRENT vs. OUTPUT POWER
(DAC TO HEADPHONE)
MAX98088 toc96
OUTPUT POWER PER CHANNEL (W)
I PV
DD
(mA)
10 1 0.1 0.01 100
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
R
HP = 32I
120
100
80
60
40
140
0
20
R PH = 16I
R PH = 32I
PVDD CURRENT vs. OUTPUT POWER
(DAC TO HEADPHONE)
MAX98088 toc97
OUTPUT POWER PER CHANNEL (mW)
I PVDD
(mA)
10 1 0.1
10
20
30
40
50
60
70
80
90
100
0
0.01 100
R PH = 16I
R PH = 32I
MCLK = 12.288MHz
LRCLK = 48kHz
LOW POWER MODE
AV
HP_ = +3dB
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO HEADPHONE)
MAX98088 toc98
FREQUENCY (Hz)
PSRR (dB)
10,000 1000 100
0
-100
10 100,000
-90
-80
-70
-60
-50
-40
-30
-20
-10
V RIPPLE = 200mV P-P
RIPPLE ON SPKLVDD,
SPKRVDD
RIPPLE ON AVDD,
DVDD, HPVDD
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO HEADPHONE)
MAX98088 toc99
FREQUENCY (Hz)
PSRR (dB)
10,000 1000 100
0
-100
10 100,000
-90
-80
-70
-60
-50
-40
-30
-20
-10
V RIPPLE = 200mV P-P
LOW POWER MODE
RIPPLE ON SPKLVDD,
SPKRVDD
RIPPLE ON AVDD,
DVDD, HPVDD