MAX98500 Datasheet, PDF (7/15 Pages) Maxim Integrated Products – Boosted 2.2W Class D Amplifier with Automatic Level Control

Boosted 2.2W Class D Amplifier
with Automatic Level Control
Typical Operating Characteristics (continued)
(VBAT = 3.6V, RL = ∞ between SPKP and SPKN, AV = +15.5dB, RKNEE = VBAT, 20Hz to 22kHz AC measurement bandwidth, unless
otherwise noted.)
SPEAKER POWER-SUPPLY REJECTION
RATIO vs. FREQUENCY
0
V_RIPPLE AT PVDD = 200mV_P-P
INPUTS AC-COUPLED AGND
-20
-40
-60
-80
-100
0.01
0.1
1
10
100
FREQUENCY (kHz)
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
0
ZLOAD = 8I + 68µH
-20
AV = 15.5dB
-40
0V
AV = 6dB
-60
-80
-100
0.01
A_V = 20dB
0.1
1
10
FREQUENCY (kHz)
0V
100
SHUTDOWN RESPONSE
MAX98500 toc13
SDSPK
2V/div
40µs/div
SPKR
OUTPUT
1V/div
TURN-ON RESPONSE
MAX98500 toc14
SDBST = VBAT
SDSPK
2V/div
0V
0V
SPKR
OUTPUT
1V/div
1ms/div
CLIPPING RESPONSE
MAX98500 toc15
THD+N = 10%
SPKR
OUTPUT
0V
500mV/div
200µs/div
WIDEBAND OUTPUT SPECTRUM
20
RBW = 100Hz
0
AUDIO INPUTS AC-GROUNDED
-20
-40
-60
-80
-100
0.1
1
10
100
1000
FREQUENCY (MHz)
INBAND OUTPUT SPECTRUM
0
fIN = 1kHz
-20 ^{OUTPUT = -60dBV}
-40
-60
-80
-100
-120
0
5
10
15
20
FREQUENCY (kHz)
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