MAX9867 datasheet(7/55 Pages) MAXIM

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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)

fAHPPB

AVFLT = 0x1

0.000625

x fS

DC Attenuation

DCATTEN

AVFLT = 0x1

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

AVVOL

VOLL/VOLR = 0x20

-50.15

-49.2

-48.15

VOLL/VOLR = 0x00 to 0x06 (+6dB to +3dB)

0.5

VOLL/VOLR = 0x06 to 0x0F (+3dB to -6dB)

VOLL/VOLR = 0x0F to 0x17 (-6dB to -22dB)

Output Volume Control Step Size

VOLL/VOLR = 0x17 to 0x3F (-22dB to mute)

Output Volume Control Mute

Attenuation

f = 1kHz

100

HEADPHONE AMPLIFIER (Note 8)

RL = 16

Ω

Output Power per Channel

(Differential Mode)

POUT

f = 1kHz, THD <

1%, TA = +25°C

RL = 32

Ω

RL = 16

Ω

Output Power per Channel

(Capacitorless Mode)

POUT

f = 1kHz, THD <

1%, TA = +25°C

RL = 32

Ω

810

RL = 16

Ω, POUT = 25mW, f = 1kHz

-76

MCLK = 13MHz,

fS = 8kHz

-77

-70

Total Harmonic Distortion + Noise

(Differential Mode)

THD+N

RL = 32

Ω, POUT =

25mW, f = 1kHz

MCLK = 12.288MHz,

fS = 48kHz

-80

RL = 16

Ω, POUT = 6.25mW, f = 1kHz

-72

MCLK = 13MHz,

fS = 8kHz

-74

-65

Total Harmonic Distortion + Noise

(Capacitorless Mode)

THD+N

RL = 32

Ω, POUT =

6.25mW, f = 1kHz

MCLK = 12.288MHz,

fS = 48kHz

-74

RL = 16

Ω, POUT = 6.25mW, f = 1kHz

-74

MCLK = 13MHz,

fS = 8kHz

-74

-65

Total Harmonic Distortion + Noise

(SE Mode)

THD+N

RL = 32

Ω, POUT =

6.25mW, f = 1kHz

MCLK = 12.288MHz,

fS = 48kHz

-76

Dynamic Range

AVVOL = +6dB (Notes 5, 7)

ELECTRICAL CHARACTERISTICS (continued)

(VAVDD = VPVDD = VDVDD = VDVDDIO = +1.8V, RL = ∞, headphone load (RL) connected between _OUTP and _OUTN in differential

mode, CREF = 2.2µF, CMICBIAS = CPREG = CREG = 1µF, AVPRE = +20dB, AVPGAM = 0dB, AVDAC = 0dB, AVLINE = +20dB, AVVOL =

0dB, MCLK = 13MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)

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