Datasheet

MAX9867
Ultra-Low Power Stereo Audio Codec
12 ______________________________________________________________________________________
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Minimum BCLK High Time t
BCLKH
Slave operation 30 ns
Minimum BCLK Low Time t
BCLKL
Slave operation 30 ns
BCLK or LRCLK Rise and Fall
t
R
, t
F
Master operation, C
L
= 15pF 7 ns
SDIN or LRCLK to BCLK Setup
Time
t
SU
20 ns
SDIN or LRCLK to BCLK Hold
Time
t
HD
0ns
SDOUT Delay Time from BCLK
Rising Edge
t
DLY
C
L
= 30pF 0 40 ns
I
2
C TIMING CHARACTERISTICS (V
DVDD
= 1.65V)
Serial-Clock Frequency f
SCL
0 400 kHz
Bus Free Time Between STOP
and START Conditions
t
BUF
1.3 µs
Hold Time (REPEATED) START
Condition
t
HD
,
STA
0.6 µs
SCL Pulse-Width Low t
LOW
1.3 µs
SCL Pulse-Width High t
HIGH
0.6 µs
Setup Time for a REPEATED
START Condition
t
SU
,
STA
0.6 µs
Data Hold Time t
HD
,
DAT
R
PU, SDA
= 475Ω 0 900 ns
Data Setup Time t
SU
,
DAT
100 ns
SDA and SCL Receiving Rise
Time
t
R
(Note 10)
20 +
0.1C
B
300 ns
SDA and SCL Receiving Fall
Time
t
F
(Note 10)
20 +
0.1C
B
300 ns
SDA Transmitting Fall Time t
F
R
PU, SDA
= 475Ω
(Note 10)
20 +
0.1C
B
250 ns
Setup Time for STOP Condition t
SU
,
STO
0.6 µs
Bus Capacitance C
B
400 pF
Pulse Width of Suppressed Spike t
SP
050ns
Note 2: The MAX9867 is 100% production tested at T
A
= +25°C. Specifications over temperature limits are guaranteed by design.
Note 3: Clocking all zeros into the DAC, master mode, and differential headphone mode.
Note 4: DAC performance measured at the headphone outputs.
Note 5: Dynamic range measured using the EIAJ method. -60dBFS 1kHz output signal, A-weighted, and normalized to 0dBFS.
f = 20Hz to 20kHz.
Note 6: Performance measured using microphone inputs, unless otherwise stated.
Note 7: Performance measured using line inputs.
Note 8: Performance measured using DAC, unless otherwise stated. LRCLK = 8kHz, unless otherwise stated.
Note 9: In master-mode operation, the accuracy of the MCLK input proportionally determines the accuracy of the sample clock rate.
Note 10: C
B
is in pF.
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)