Rainbow Electronics MAX98088 - Manual (Page 43)

Stereo Audio Codec
with FLEXSOUND Technology
MAX98088
43
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.)
Line to Speaker
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
(LINE TO SPEAKER)
OUTPUT POWER (W)
THD+N RATIO (dB)
0.8 0.6 0.2 0.4
-70
-60
-50
-40
-20
-30
-10
0
-80
0 1.0
MAX98088 toc79
f = 100Hz
f = 6000Hz
f = 1000Hz
Z SPK = 8I + 68µH
AV SPK_ = +8dB
C IN = 1µF
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
(LINE TO SPEAKER)
MAX98088 toc80
FREQUENCY (Hz)
THD+N RATIO (dB)
10,000 1000 100
-70
-60
-50
-40
-30
-20
-10
0
-80
10 100,000
Z SPK = 8I + 68µH
AV SPK_ = +8dB
C IN = 1µF
P OUT = 0.25W
P OUT = 0.5W
GAIN vs. FREQUENCY
(LINE TO SPEAKER)
MAX98088 toc81
FREQUENCY (Hz)
NORMALIZED GAIN (dBrA)
10,000 1000 100
-4
-3
-2
-1
0
1
2
3
4
5
-5
10 100,000
Z FN = 8I + 68µH
C IN = 1µF
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE-IN TO SPEAKER)
MAX98088 toc82
FREQUENCY (Hz)
PSRR (dBr1)
10,000 1000 100
-80
-70
-60
-50
-40
-30
-20
-10
0
10
-90
10 100,000
RIPPLE ON SPKLVDD,
SPKRVDD
INPUTS AC GROUNDED
VRIPPLE = 200mV P-P
RIPPLE ON AVDD,
DVDD, HPVDD
CROSSTALK vs. FREQUENCY
(LINE TO SPEAKER)
MAX98088 toc83
FREQUENCY (Hz)
CROSSTALK (dB)
10,000 1000 100
-70
-60
-50
-40
-30
-20
-10
0
-80
10 100,000
Z FN = 8I + 68µH
C IN = 1µF
LEFT TO RIGHT
RIGHT TO LEFT