MAX9789 MAXIM [Maxim Integrated Products], MAX9789 Datasheet - Page 9

• Manufacturer Part Number: MAX9789
• Description: Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers
• Manufacturer: MAXIM [Maxim Integrated Products]

Windows Vista-Compliant, Stereo Class AB Speaker
(V
∞, unless otherwise specified, GAIN1 = 0, GAIN2 = 1 (A
unless otherwise noted. Headphone mode: SPKR_EN = 1, HP_EN = 0. Speaker mode: SPKR_EN = 0, HP_EN = 1.)
DD
0.01
0.01
0.1
0.1
10
10
1
1
= PV
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
vs. OUTPUT POWER (HEADPHONE MODE)
0
0
Amplifiers and DirectDrive Headphone Amplifiers
DD
20
= CPV
f = 1kHz
f = 20Hz
50
f = 1kHz
OUTPUT POWER (mW)
OUTPUT POWER (mW)
f = 20Hz
DD
40
_______________________________________________________________________________________
100
= HPV
150
100
50
0
60
10
OUTPUT POWER vs. LOAD RESISTANCE
f = 10kHz
THD+N = 1%
DD
150
f = 10kHz
HPV
R
L
R
= LDO_EN = +5V, V
80
= 32Ω
L
DD
= 16Ω
(HEADPHONE MODE)
= 3V
200
100
R
L
100
(Ω)
THD+N = 10%
-100
-110
0.01
-10
-20
-30
-40
-50
-60
-70
-80
-90
0.1
Typical Operating Characteristics (continued)
10
1
0
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
10
0
GND
vs. FREQUENCY (HEADPHONE MODE)
f
IN
VSP
LEFT TO RIGHT
= 1kHz
= V
20
f = 20Hz
1000
= 10dB, A
100
PGND
OUTPUT POWER (mW)
f = 1kHz
FREQUENCY (Hz)
CROSSTALK
RIGHT TO LEFT
40
= V
1k
VHP
CPGND
60
FS = 0.300V
V
R
= 3.5dB), measurement BW = 20kHz AES17, T
OUT
L
= 32Ω
f = 10kHz
10k
= -20dB FS
= V
80
R
100
L
50
0
= 32Ω
RMS
LDO_SET
10
OUTPUT POWER vs. LOAD RESISTANCE
100k
THD+N = 1%
100
= 0V, C1 = C2 = C
(HEADPHONE MODE)
-100
-110
-120
-130
-140
0.01
-10
-20
-30
-40
-50
-60
-70
-80
-90
0.1
10
0
1
TOTAL HARMONIC DISTORTION PLUS NOISE
THD+N = 10%
R
vs. OUTPUT POWER (HEADPHONE MODE)
0
0
100
L
(Ω)
HEADPHONE OUTPUT SPECTRUM
f = 20Hz
5
OUTPUT POWER (mW)
HPV
f
IN
FREQUENCY (kHz)
50
BIAS
= 1kHz
DD
= 3V
10
= C
1000
IN
f = 1kHz
100
FS = 0.707V
V
R
= 1µF. R
A
OUT
L
= 32Ω
f = 10kHz
= +25°C,
15
HPV
R
= -60dB FS
L
= 16Ω
DD
RMS
= 3V
L
=
150
20
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