max97002 Maxim Integrated Products, Inc., max97002 Datasheet - Page 15

• Manufacturer Part Number: max97002
• Description: Audio Subsystem With Mono Class D Speaker And Class H Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

(V
loads (ZSPK) connected between OUTP and OUTN. Headphone loads (RHP) connected from HPL or HPR to GND. ZSPK = ∞, RHP = ∞.
C
C1P-C1N
LDOIN
90
80
70
60
50
40
30
20
10
0
1
OUTPUT POWER vs. LOAD RESISTANCE
= V
f
THD+N = 1%
MEASURED AT
HPR ONLY
IN
= C
Speaker and Class H Headphone Amplifiers
PVDD
= 1kHz
-100
-120
-140
-20
-40
-60
-80
-10
-20
-30
-40
-50
-60
-70
HPVDD
0
0
LOAD RESISTANCE (I)
0.01
= 3.7V, V
0
10
R
f
R
IN
COMMON-MODE REJECTION RATIO
LOAD
LOAD
2
= 1kHz
= C
C1 = C2 = C3 = 1µF
C1 = C2 = C3 = 2.2µF
= 16I
= 32I
4
PREGAIN = +18dB
PREGAIN = 0dB
HPVSS
0.1
PREGAIN = +9dB
GND
OUTPUT SPECTRUM
6
vs. FREQUENCY
FREQUENCY (kHz)
FREQUENCY (kHz)
100
Audio Subsystem with Mono Class D
8
= V
= C
10
1
PGND
BIAS
12
1000
= 0V. Single-ended inputs, preamp gain = 0dB,
14 16 18 20
=
10
1μF. T
-100
-120
-140
-20
-40
-60
-80
Typical Operating Characteristics (continued)
A
100
0
= +25°C, unless otherwise noted.)
0.01
POWER-SUPPLY REJECTION RATIO
V
V
INPUTS AC-COUPLED GND
RIPPLE
DD
= 1.8V
= 200mV
0.1
vs. FREQUENCY
FREQUENCY (kHz)
P-P
1
-10
-20
-30
-40
-50
-60
-70
-80
-90
10
0
0.01
R
SOFTWARE SHUTDOWN RESPONSE
LEFT TO RIGHT RIGHT TO LEFT
LOAD
100
CROSSTALK vs. FREQUENCY
= 32I
HPLVOL = HPRVOL = SPKVOL =
0.1
FREQUENCY (kHz)
-100
-120
-140
-20
-40
-60
-80
1ms/div
0
1
0
R
f
IN
LOAD
2
= 1kHz
= 32I
4
10
OUTPUT SPECTRUM
MAX97002 toc39
6
FREQUENCY (kHz)
8
100
10 12
SDA
2V/div
HPL/HPR
200mV/div
0dB. Speaker
14
16 18
20
15