Datasheet

MAX9867
Ultra-Low Power Stereo Audio Codec
______________________________________________________________________________________ 11
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)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DIGITAL INPUTS (SDA, SCL)
Input High Voltage V
IH
0.7 x
DVDD
V
Input Low Voltage V
IL
0.3 x
DVDD
V
Input Hysteresis 200 mV
Input Leakage Current I
IH
, I
IL
T
A
= +25°C ±1 µA
Input Capacitance 10 pF
DIGITAL INPUT (DIGMICDATA)
Input High Voltage V
IH
0.65 x
DVDD
V
Input Low Voltage V
IL
0.35 x
DVDD
V
Input Hysteresis 100 mV
Input Leakage Current I
IH
, I
IL
T
A
= +25°C ±35 µA
Input Capacitance 10 pF
CMOS DIGITAL OUTPUTS (BCLK, LRCLK, SDOUT)
Output Low Voltage V
OL
I
OL
= 3mA 0.4 V
Output High Voltage V
OH
I
OH
= 3mA
DVDDIO
- 0.4
V
CMOS DIGITAL OUTPUT (DIGMICCLK)
Output Low Voltage V
OL
I
OL
= 1mA 0.4 V
Output High Voltage V
OH
I
OH
= 1mA
DVDD -
0.4
V
OPEN-DRAIN DIGITAL OUTPUTS (SDA, IRQ)
Output High Current I
OH
V
OUT
= V
DVDD
, T
A
= +25°C 1 µA
Output Low Voltage V
OL
I
OL
= 3mA
0.2 x
DVDD
V
DIGITAL MICROPHONE TIMING CHARACTERISTICS (V
DVDD
= 1.65V)
MICCLK = 00 PCLK/8
DIGMICCLK Divide Ratio f
MICCLK
MICCLK = 01 PCLK/6
MHz
DIGMICDATA to DIGMICCLK
Setup Time
t
SU
,
MIC
Either clock edge 20 ns
DIGMICDATA to DIGMICCLK
Hold Time
t
HD
,
MIC
Either clock edge 0 ns
DIGITAL AUDIO INTERFACE TIMING CHARACTERISTICS (V
DVDD
= 1.65V)
t
BCLKS
Slave operation 75 ns
Minimum BCLK Cycle Time
t
BCLKM
Master operation 325 ns