Rainbow Electronics MAX98089 - Manual (Page 44)

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MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
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. Line out (R LOUT ) connected from LOUTL or LOUTR to SPKLGND, 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)
MAX98089 toc79
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
Z SPK = 8I + 68µH
AV SPK_ = +8dB
C IN = 1µF
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO SPEAKER)
MAX98089 toc80
FREQUENCY (Hz)
THD+N RATIO (dB)
10k 1k 100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10 100k
Z SPK_ = 8I + 68µH
AV SPK_ = +8dB
C IN = 1µF
P OUT = 0.5W
P OUT = 0.25W
GAIN vs. FREQUENCY
(LINE TO SPEAKER)
MAX98089 toc81
FREQUENCY (Hz)
NORMALIZED GAIN (dB)
10k 1k 100
-4
-3
-2
-1
0
1
2
3
4
5
-5
10 100k
Z SPK_ = 8I + 68µH
C IN = 1µF
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO SPEAKER)
MAX98089 toc82
FREQUENCY (Hz)
PSRR (dB)
10k 1k 100
10
20
30
40
50
60
70
80
90
0
10 100k
RIPPLE ON SPKLVDD,
SPKRVDD
INPUTS AC GROUNDED
V RIPPLE = 200mV P-P
RIPPLE ON AVDD,
DVDD, HPVDD
FREQUENCY (Hz)
1k 100k
CROSSTALK (dB)
10k 100 10
CROSSTALK vs. FREQUENCY
(LINE TO SPEAKER)
MAX98089 toc83
-100
-80
-60
-40
-20
Z FN = 8I + 68µH
C IN = 1µF
0
-120
LEFT TO RIGHT
RIGHT TO LEFT