Datasheet

MAX9860
16-Bit Mono Audio Voice Codec
4
Maxim Integrated
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= V
DVDD
= V
DVDDIO
= +1.8V, R
L
= ∞, headphone load (R
L
) connected between OUTP and OUTN, C
REF
= 2.2µF, C
MICBIAS
=
C
PREG
= C
REG
= 1µF, A
VPRE
= +20dB, A
VMICPGA
= 0dB, f
MCLK
= 13MHz, f
LRCLK
= 8kHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
f
S
= 8kHz, A
VPRE
= 0dB,
A-weighted from 20Hz to f
S
/2
81
Dynamic Range (Note 5) DR
f
S
= 48kHz, A
VPRE
= 0dB, T
A
= +25°C 75 83
dB
f
S
= 8kHz 1.2
ADC Phase Delay
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
= 48kHz, T
A
= +25°C -70 -75 dB
f = 1kHz, V
RIPPLE
= 100mV
P-P
,
A
VPGA
= 0dB
82
Power-Supply Rejection Ratio PSRR
f = 10kHz, V
RIPPLE
= 100mV
P-P
,
A
VPGA
= 0dB
76
dB
Channel Crosstalk Driven channel at -1dBFS, f = 1kHz -92 dB
ADC LOWPASS DIGITAL FILTER
With respect to f
S
within ripple;
f
S
= 8kHz to 48kHz
0.445 x
f
S
Hz
Passband Cutoff f
PLP
-3dB cutoff 0.449 f
S
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
74 dB
ADC HIGHPASS DIGITAL FILTER
AVFLT = 0x1 (elliptical for 16kHz GSM)
0.0161
x f
S
AVFLT = 0x2 (500Hz Butterworth for
16kHz)
0.0312
x f
S
AVFLT = 0x3 (elliptical for 8kHz GSM)
0.0321
x f
S
AVFLT = 0x4
(500Hz Butterworth for 8kHz)
0.0625
x f
S
5th Order Passband Cutoff
(-3dB from Peak, I
2
C Register
Programmable) (Note 6)
f
AHPPB
AVFLT = 0x5
(200Hz Butterworth for 48kHz)
0.0042
x f
S
Hz