Rainbow Electronics MAX9867 - Manual (Page 9)

MAX9867
Ultra-Low Power Stereo Audio Codec
_______________________________________________________________________________________ 9
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
AV PRE = 0dB,
V IN = 1V P-P , f = 1kHz
-80
Total Harmonic Distortion + Noise THD+N
AV PRE = +30dB,
V IN = 32mV P-P , f = 1kHz,
(1V P-P at ADC input)
-67
dB
V
AVDD
= 1.65V to 1.95V, input referred 60 85
f = 217Hz, V RIPPLE = 100mV,
AV
ADC
= 0dB, input referred
85
f = 1kHz, V RIPPLE = 100mV,
AV ADC = 0dB, input referred
80
Power-Supply Rejection Ratio PSRR
f = 10kHz, V RIPPLE = 100mV,
AV ADC = 0dB, input referred
80
dB
MICROPHONE BIAS
Output Voltage V
MICBIAS
V
AVDD
= 1.8V, I
LOAD
= 1mA 1.5 1.525 1.55 V
Load Regulation I LOAD = 1mA to 2mA 0.2 10 V/A
Line Regulation V AVDD = 1.65V to 1.95V 10 μV/V
f = 217Hz, V RIPPLE = 100mV P-P 85
Power-Supply Rejection Ratio PSRR
f = 10kHz, V RIPPLE = 100mV P-P 81
dB
Noise Voltage A-weighted 9.1 μV RMS
LINE INPUT
Full-Scale Input V IN AV LINE = 0dB 1.0 V P-P
Line Input Level Adjust Range AV LINE LIGL/LIGR = 0xF to 0x0 -6.5 +24.5 dB
Line Input Mute Attenuation f = 1kHz 100 dB
Input Resistance R IN_LINE AV LINE = +24dB 20 k Ω
Total Harmonic Distortion + Noise THD+N V IN = 0.1V P-P , f = 1kHz, differential output -83 dB
AUXIN INPUT
Input DC Voltage Range AUXEN = 1 0 0.738 V
AUXIN Input Resistance RIN AUXEN = 1, 0V ≤ AUXIN ≤ 0.738 10 40 M 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
V
JDETEN = 1, SHDN = 1,
JACKSNS = GND
4
Pullup Current IPU
JDETEN = 1, SHDN = 0,
JACKSNS = LOUTP = GND
4 20
μA
Pullup Voltage JDETEN = 1, JACKSNS, LOUTP AVDD V
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)