Electrical characteristics (continued) – Rainbow Electronics MAX98500 User Manual
Page 3
_______________________________________________________________________________________ 3
MAX98500
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)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SPEAKER AMPLIFIER
Output Offset Voltage
V
OS
T
A
= +25NC
1
3
mV
Click-and-Pop Level
K
CP
Peak voltage, T
A
=
+25NC, A-weighted, 32
samples per second,
Z
SPK
= 8I + 68FH,
(Notes 3, 4)
Into shutdown
-56
dBV
Out of shutdown
-56
Output Power (Note 5)
P
OUT
Z
SPK
= 8I + 68FH
THD+N P 1%
1.7
W
THD+N P 10%
2.2
Total Harmonic Distortion Plus
Noise
THD+N
f = 1kHz, P
OUT
= 850mW, T
A
= +25NC,
Z
SPK
= 8I + 68FH
0.05
%
Output Switching Frequency
300
kHz
Gain
A
V
GAIN = AGND
5.5
6
6.5
dB
GAIN = unconnected
15
15.5
16
GAIN = V
BAT
19.5
20
20.5
Output Current Limit
2
A
Efficiency
E
P
OUT
= 1.7W, f = 1kHz, Z
SPK
= 8I + 68FH
92
%
Output Noise
A-weighted
43
F
V
RMS
Input Resistance
R
IN
SDBST = SDSPK =
V
BAT
A
V
= 6dB
(GAIN = AGND)
36
54
72
kI
A
V
= 15.5dB
(GAIN =
unconnected)
12
18
26
A
V
= 20dB
(GAIN = V
BAT
)
6.5
11
16
V
SDBST
= V
SDSPK
= 0V
All gain settings
110
Common-Mode Rejection Ratio
CMRR
f = 1kHz
60
dB
Bias Voltage
V
BIAS
1.3
1.4
1.5
V
ALC
Attack Time
20
F
s/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