Datasheet

(V
DD
= SHDN = 3V, PGND = SGND = 0V, C1 = C2 = 1μF, BB_ = 0V. gain = 0dB, maximum volume, BassMax disabled. Load con-
nected between OUT_ and SGND where specified. T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C, see
Timing Diagram.) (Notes 1, 3)
Note 1: All specifications are 100% tested at T
A
= +25°C. Temperature limits are guaranteed by design.
Note 2: Inputs AC-coupled to SGND.
Note 3: Guaranteed by design.
Note 4: Headphone mode testing performed with a 32Ω resistive load connected to GND. Mode transitions are controlled by SHDN.
The KCP level is calculated as: 20 x log [(level peak voltage during mode transition, no input signal)/(peak voltage under
normal operation at rated power)]. Units are expressed in dB.
Note 5: Output power MIN is specified at T
A
= +25°C.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Serial Clock Frequency f
SCL
0 400 kHz
Bus Free Time Between a STOP
and a START Condition
t
BUF
1.3 µs
START Condition Hold Time t
HD:STA
0.6 µs
Low Period of the SCL Clock t
LOW
1.3 µs
High Period of the SCL Clock t
HIGH
0.6 µs
Setup Time for a Repeated
START Condition
t
SU:STA
0.6 µs
Data Hold Time t
HD:DAT
0 0.9 µs
Data Setup Time t
SU:DAT
100 ns
Maximum Rise Time of SDA and
SCL Signals
t
r
300 ns
Maximum Fall Time of SDA and
SCL Signals
t
f
300 ns
Setup Time for STOP Condition t
SU:STO
0.6 µs
Pulse Width of Suppressed Spike t
SP
100 ns
Maximum Capacitive Load for
Each Bus Line
C
L_BUS
400 pF
MAX9723 Stereo DirectDrive Headphone Amplier
with BassMax, Volume Control, and I
2
C
www.maximintegrated.com
Maxim Integrated │ 4
Timing Characteristics