Datasheet

MAX9867
Ultra-Low Power Stereo Audio Codec
_______________________________________________________________________________________ 7
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
= 16Ω 30 52
Output Power per Channel
(Differential Mode)
P
OUT
f = 1kHz, THD <
1%, T
A
= +25°C
R
L
= 32Ω 32
mW
R
L
= 16Ω 19
Output Power per Channel
(Capacitorless Mode)
P
OUT
f = 1kHz, THD <
1%, T
A
= +25°C
R
L
= 32Ω 810
mW
R
L
= 16Ω, P
OUT
= 25mW, f = 1kHz -76
MCLK = 13MHz,
f
S
= 8kHz
-77 -70
Total Harmonic Distortion + Noise
(Differential Mode)
THD+N
R
L
= 32Ω, P
OUT
=
25mW, f = 1kHz
MCLK = 12.288MHz,
f
S
= 48kHz
-80
dB
R
L
= 16Ω, P
OUT
= 6.25mW, f = 1kHz -72
MCLK = 13MHz,
f
S
= 8kHz
-74 -65
Total Harmonic Distortion + Noise
(Capacitorless Mode)
THD+N
R
L
= 32Ω, P
OUT
=
6.25mW, f = 1kHz
MCLK = 12.288MHz,
f
S
= 48kHz
-74
dB
R
L
= 16Ω, P
OUT
= 6.25mW, f = 1kHz -74
MCLK = 13MHz,
f
S
= 8kHz
-74 -65
Total Harmonic Distortion + Noise
(SE Mode)
THD+N
R
L
= 32Ω, 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)