Datasheet

4 ______________________________________________________________________________________
MAX98502
Boosted 2.2W Class D Amplifier
with Automatic Level Control
ELECTRICAL CHARACTERISTICS (continued)
(V
BAT
= 3.6V, R
L
= J between SPKP and SPKN, A
V
= +6dB, C
IN
= 1FF, 20Hz to 22kHz AC measurement bandwidth, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25NC.) (Note 2)
Note 2: 100% production tested at T
A
= +25NC. Specifications over temperature limits are guaranteed by design.
Note 3: Amplifier inputs are AC-coupled to AGND.
Note 4: Mode transitions are controlled by SDSPK.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ALC
Attack Time 20
Fs/dB
Release Time 1.6 s/dB
Maximum Attenuation 8 dB
Attenuation Resolution 0.5 dB
Knee Voltage V
KNEE
T
A
= +25NC
R
KNEE
= 154kI
2.19 2.3 2.42
V
R
KNEE
= 40.5kI
3.14 3.3 3.47
R
KNEE
= 13kI
3.71 3.9 4.10
Knee Resistor R
KNEE
T
A
= +25NC,
A
V
= 15.5dB
V
KNEE
= 3.25V 43.2
kI
V
KNEE
= 3.35V 37.4
V
KNEE
= 3.45V 32.4
V
KNEE
= 3.55V 27.4
V
KNEE
= 3.65V 23.2
V
KNEE
= 3.75V 18.7
V
KNEE
= 3.85V 15.0
DIGITAL INPUTS (SDBST, SDSPK)
Input Voltage High V
iH
1.4 V
Input Voltage Low V
IL
0.4 V
Input Capacitance C
IN
10 pF
Input Leakage Current I
IN
T
A
= +25NC
-1.0 +1.0
FA