Datasheet

MAX9788
14V
P-P
, Class G Ceramic Speaker Driver
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V
CC
= V
CPVDD
= V
SHDN
= 3.6V, V
GND
= V
CPGND
= 0V, R
IN+
= R
IN-
= 10kΩ, R
FB+
= R
FB-
= 10kΩ, R
FS
= 100kΩ, C1 = 4.7µF, C2 =
10µF, Z
L
= 1µF + 10Ω; load terminated between OUT+ and OUT-, unless otherwise stated; T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Notes 1, 2)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9788 toc01
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01
0.1
1
10
0.001
10 100k
V
CC
= 2.7V
V
OUT
= 3V
RMS
V
OUT
= 1.25V
RMS
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9788 toc02
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01
0.1
1
10
0.001
10 100k
V
CC
= 3.6V
V
OUT
= 1.9V
RMS
V
OUT
= 4V
RMS
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9788 toc03
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01
0.1
1
10
0.001
10 100k
V
CC
= 5V
V
OUT
= 3V
RMS
V
OUT
= 5.9V
RMS
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT VOLTAGE
MAX9788 toc04
OUTPUT VOLTAGE (V
RMS
)
THD+N (%)
3421
0.01
0.1
1
10
0.001
05
V
CC
= 2.7V
f
IN
= 10kHz
f
IN
= 1kHz
f
IN
= 20Hz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT VOLTAGE
MAX9788 toc05
OUTPUT VOLTAGE (V
RMS
)
THD+N (%)
53
4
1
2
0.01
0.1
1
10
0.001
06
V
CC
= 3.6V
f
IN
= 10kHz
f
IN
= 1kHz
f
IN
= 20Hz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT VOLTAGE
MAX9788 toc06
OUTPUT VOLTAGE (V
RMS)
THD+N (%)
7
6
5
4
231
0.01
0.1
1
10
0.001
08
f
IN
= 20Hz
f
IN
= 10kHz
f
IN
= 1kHz
V
CC
= 5V
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9788 toc07
FREQUENCY (Hz)
PSRR (dB)
10k1k100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10 100k
V
RIPPLE
= 200mV
P-P
POWER CONSUMPTION
vs. OUTPUT VOLTAGE
MAX9788 toc08
OUTPUT VOLTAGE (V
RMS
)
POWER CONSUMPTION (mW)
3
2
1
25
50
75
100
0
04
V
CC
= 2.7V
f
IN
= 1kHz
1% THD+N
POWER CONSUMPTION
vs. OUTPUT VOLTAGE
MAX9788 toc09
OUTPUT VOLTAGE (V
RMS
)
4
31 2
25
50
75
100
150
125
175
200
0
05
V
CC
= 3.6V
f
IN
= 1kHz
1% THD+N
POWER CONSUMPTION (mW)