Rainbow Electronics MAX9867 - Manual (Page 7)

MAX9867
Ultra-Low Power Stereo Audio Codec
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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ADC STEREO AUDIO MODE DIGITAL DC BLOCKING HIGHPASS FILTER
Passband Cutoff
(-3dB from Peak)
f AHPPB AVFLT = 0x1
0.000625
x f S
Hz
DC Attenuation DC ATTEN AVFLT = 0x1 90 dB
OUTPUT VOLUME CONTROL
VOLL/VOLR = 0x00 14.55 14.9 15.15
VOLL/VOLR = 0x01 14.1 14.4 14.6
VOLL/VOLR = 0x02 13.6 13.9 14.1
VOLL/VOLR = 0x04 12.6 12.9 13.1
VOLL/VOLR = 0x08 9.35 9.9 10.35
VOLL/VOLR = 0x10 0.35 0.9 1.35
Line Input to Output Volume
Control
AV VOL
VOLL/VOLR = 0x20 -50.15 -49.2 -48.15
dB
VOLL/VOLR = 0x00 to 0x06 (+6dB to +3dB) 0.5
VOLL/VOLR = 0x06 to 0x0F (+3dB to -6dB) 1
VOLL/VOLR = 0x0F to 0x17 (-6dB to -22dB) 2
Output Volume Control Step Size
V O LL/V O LR = 0x17 to 0x3F ( - 22d B to m ute) 4
dB
Output Volume Control Mute
Attenuation
f = 1kHz 100 dB
HEADPHONE AMPLIFIER (Note 8)
R
L
= 16 Ω 30 52 Output Power per Channel
(Differential Mode)
P OUT
f = 1kHz, THD <
1%, T
A = +25°C R L = 32 Ω 32
mW
R L = 16 Ω 19 Output Power per Channel
(Capacitorless Mode)
P OUT
f = 1kHz, THD <
1%, T
A = +25°C R L = 32 Ω 8 10
mW
R L = 16 Ω, P
OUT = 25mW, f = 1kHz -76
MCLK = 13MHz,
f
S = 8kHz
-77 -70 Total Harmonic Distortion + Noise
(Differential Mode)
THD+N R L = 32 Ω, P
OUT =
25mW, f = 1kHz MCLK = 12.288MHz,
f
S = 48kHz
-80
dB
R L = 16 Ω, P
OUT = 6.25mW, f = 1kHz -72
MCLK = 13MHz,
f
S = 8kHz
-74 -65 Total Harmonic Distortion + Noise
(Capacitorless Mode)
THD+N R L = 32 Ω, P
OUT =
6.25mW, f = 1kHz MCLK = 12.288MHz,
f
S = 48kHz
-74
dB
R L = 16 Ω, P
OUT = 6.25mW, f = 1kHz -74
MCLK = 13MHz,
f
S = 8kHz
-74 -65 Total Harmonic Distortion + Noise
(SE Mode)
THD+N R L = 32 Ω, P
OUT =
6.25mW, f = 1kHz MCLK = 12.288MHz,
f
S = 48kHz
-76
dB
Dynamic Range DR AV VOL = +6dB (Notes 5, 7) 76 90 dB
ELECTRICAL CHARACTERISTICS (continued)
(V AVDD = V PVDD = V DVDD = V DVDDIO = +1.8V, R L = ∞, headphone load (R L ) connected between _OUTP and _OUTN in differential
mode, C REF = 2.2μF, C MICBIAS = C PREG = C REG = 1μF, AV PRE = +20dB, AV PGAM = 0dB, AV DAC = 0dB, AV LINE = +20dB, AV VOL =
0dB, MCLK = 13MHz, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 2)