Rainbow Electronics MAX9867 - Manual (Page 5)

MAX9867
Ultra-Low Power Stereo Audio Codec
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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DAC STEREO AUDIO MODE DIGITAL DC BLOCKING HIGHPASS FILTER
Passband Cutoff
(-3dB from Peak)
f DHPPB DVFLT = 0x1
0.000625
x f S
Hz
DC Attenuation DC ATTEN DVFLT = 0x1 90 dB
ADC (Note 6)
f S = 8kHz, MODE = 0 (IIR voice) 75 84
Dynamic Range (Note 5) DR
f S = 8kHz to 48kHz, MODE = 1 (FIR audio) 85
dB
Full-Scale Input
Differential MIC input or stereo-line inputs,
AVPRE = 0dB, AVPGA = 0dB
1 V P-P
Gain Error (Note 7)
DC accuracy, measured with respect to
80% of full-scale output
1 5 %
f S = 8kHz 1.2
Voice Path Phase Delay P DLY
f = 1kHz, 0dBFS, HP
filter disabled,
analog input to
digital output
f S = 16kHz 0.61
ms
Total Harmonic Distortion THD f = 1kHz, f
S
= 8kHz, T
A
= +25°C, 0dBFs -81 -70 dB
ADC Level Adjust Range AV ADC AVL/VR = 0xF to 0x0 -12 +3 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
ADC VOICE MODE DIGITAL IIR LOWPASS FILTER
With respect to f S within ripple;
f S = 8kHz to 48kHz
0.445 x
f S
Passband Cutoff f PLP
-3dB cutoff
0.449 x
f S
Hz
Passband Ripple f < f PLP ±0.1 dB
Stopband Cutoff f SLP With respect to f S ; f S = 8kHz to 48kHz
0.469 x
f S
Hz
Stopband Attenuation f > f SLP , f = 20Hz to 20kHz 74 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)