MAX9867 datasheet(9/55 Pages) MAXIM

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Ultra-Low Power Stereo Audio Codec

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PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

AVPRE = 0dB,

VIN = 1VP-P, f = 1kHz

-80

Total Harmonic Distortion + Noise

THD+N

AVPRE = +30dB,

VIN = 32mVP-P, f = 1kHz,

(1VP-P at ADC input)

-67

VAVDD = 1.65V to 1.95V, input referred

f = 217Hz, VRIPPLE = 100mV,

AVADC = 0dB, input referred

f = 1kHz, VRIPPLE = 100mV,

AVADC = 0dB, input referred

Power-Supply Rejection Ratio

PSRR

f = 10kHz, VRIPPLE = 100mV,

AVADC = 0dB, input referred

MICROPHONE BIAS

Output Voltage

VMICBIAS

VAVDD = 1.8V, ILOAD = 1mA

1.5

1.525

1.55

Load Regulation

ILOAD = 1mA to 2mA

0.2

V/A

Line Regulation

VAVDD = 1.65V to 1.95V

µV/V

f = 217Hz, VRIPPLE = 100mVP-P

Power-Supply Rejection Ratio

PSRR

f = 10kHz, VRIPPLE = 100mVP-P

Noise Voltage

A-weighted

9.1

µVRMS

LINE INPUT

Full-Scale Input

VIN

AVLINE = 0dB

1.0

VP-P

Line Input Level Adjust Range

AVLINE

LIGL/LIGR = 0xF to 0x0

-6.5

+24.5

Line Input Mute Attenuation

f = 1kHz

100

Input Resistance

RIN_LINE

AVLINE = +24dB

Ω

Total Harmonic Distortion + Noise

THD+N

VIN = 0.1VP-P, f = 1kHz, differential output

-83

AUXIN INPUT

Input DC Voltage Range

AUXEN = 1

0.738

AUXIN Input Resistance

RIN

AUXEN = 1, 0V

≤ AUXIN ≤ 0.738V

Ω

JACK SENSE OPERATION

JDETEN = 1,

SHDN = 1, JACKSNS

0.92 x

MICBIAS

0.95 x

MICBIAS

0.98 x

MICBIAS

Threshold

VTH

JDETEN = 1,

SHDN = 0, JACKSNS,

LOUTP

AVDD -

0.8

AVDD -

0.4

AVDD -

0.15

JDETEN = 1,

SHDN = 1,

JACKSNS = GND

Pullup Current

IPU

JDETEN = 1,

SHDN = 0,

JACKSNS = LOUTP = GND

420

µA

Pullup Voltage

JDETEN = 1, JACKSNS, LOUTP

AVDD

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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