max9789a Maxim Integrated Products, Inc., max9789a Datasheet - Page 6

• Manufacturer Part Number: max9789a
• Description: Windows Vista-compliant, Stereo Class Ab Speaker Amplifiers And Directdrive Headphone Amplifiers Integrated Products
• Manufacturer: Maxim Integrated Products, Inc.

Windows Vista-Compliant, Stereo Class AB Speaker
Amplifiers and DirectDrive Headphone Amplifiers
(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.)
6
0.001
0.001
DD
-100
0.01
0.01
-75
-80
-85
-90
-95
0.1
0.1
10
10
_______________________________________________________________________________________
1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
= PV
vs. OUTPUT VOLTAGE (HEADPHONE MODE)
10
0
0
vs. OUTPUT POWER (SPEAKER MODE)
HPV
R
FS = 0.707V
R
R
L
L
vs. FREQUENCY (SPEAKER MODE)
L
f
IN
= 10kΩ
= 3Ω
DD
f
= 3Ω
IN
DD
= 20Hz
0.5
= 10kHz
= 3V
= CPV
f
IN
100
0.5
OUTPUT VOLTAGE (V
= 10kHz
f
RMS
IN
OUTPUT POWER (W)
1.0
FREQUENCY (Hz)
= 20Hz
DD
V
OUT
1.0
1.5
1k
= HPV
= -3dB FS
2.0
RMS
DD
f
IN
10k
1.5
)
= 1kHz
f
= LDO_EN = +5V, GND = PGND = CPGND = LDO_SET = 0V, C1 = C2 = C
IN
2.5
= 1kHz
100k
2.0
3.0
0.001
-100
-100
0.01
-10
-20
-30
-40
-50
-60
-70
-80
-90
-75
-80
-85
-90
-95
Typical Operating Characteristics (continued)
0.1
10
0
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
10
10
0
VSP
vs. OUTPUT POWER (SPEAKER MODE)
vs. FREQUENCY (HEADPHONE MODE)
R
FS = 0.707V
R
L
vs. FREQUENCY (SPEAKER MODE)
L
LEFT TO RIGHT
f
= 4Ω
= 4Ω
IN
f
IN
= 10dB, A
= 20Hz
= 10kHz
0.5
100
100
RMS
OUTPUT POWER (W)
FREQUENCY (Hz)
FREQUENCY (Hz)
CROSSTALK
V
1.0
OUT
VHP
= -3dB FS
1k
1k
= 3.5dB), measurement BW = 20kHz AES17, T
1.5
RIGHT TO LEFT
FS = 0.707V
V
R
OUT
L
= 10kΩ
10k
10k
= -20dB FS
2.0
f
IN
= 1kHz
RMS
100k
100k
2.5
0.001
-100
-110
-120
-130
-140
-100
-105
-110
0.01
-10
-20
-30
-40
-50
-60
-70
-80
-90
-75
-80
-85
-90
-95
0.1
10
0
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
10
0
0
vs. OUTPUT POWER (SPEAKER MODE)
FS = 0.707V
R
R
vs. FREQUENCY (SPEAKER MODE)
L
L
f
HEADPHONE OUTPUT SPECTRUM
IN
= 8Ω
= 8Ω
= 10kHz
100
5k
RMS
BIAS
OUTPUT POWER (W)
0.5
FREQUENCY (Hz)
FREQUENCY (Hz)
f
IN
V
OUT
= 20Hz
= C
10k
= -3dB FS
1k
IN
f
A
IN
= 1µF. R
= 1kHz
= +25°C,
1.0
FS = 0.300V
V
R
OUT
L
= 10kΩ
15k
10k
= -60dB FS
L
RMS
= ,
100k
20k
1.5