max9791 Maxim Integrated Products, Inc., max9791 Datasheet - Page 3

• Manufacturer Part Number: max9791
• Description: Windows Vista-compliant Class D Speaker Amplifiers With Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

ELECTRICAL CHARACTERISTICS (continued)
(V
wise specified. R
unless otherwise noted. Typical values are at T
Amplifiers with DirectDrive Headphone Amplifiers
SPEAKER AMPLIFIER
Output Power
Total Harmonic Distortion Plus
Noise
Power-Supply Rejection Ratio
Feedback Impedance
Gain
Output Offset Voltage
Click-and-Pop Level
Signal-to-Noise Ratio
Noise
Crosstalk
AVDD
= V
PARAMETER
PVDD
IN1
= V
Windows Vista-Compliant Class D Speaker
= 20kΩ (A
_______________________________________________________________________________________
HPVDD
= 5V, V
VSPKR
GND
SYMBOL
= 12dB), R
THD+N
R
PSRR
P
SNR
V
K
= V
FSKR
A
V
OUT
OS
CP
N
V
PGND
A
= +25°C.) (Note 3)
IN2
THD+N = 1%,
f = 1kHz,
T
(Note 4)
THD+N = 10%,
f = 1kHz,
T
(Note 4)
R
R
V
f = 217Hz, 200mV
f = 1kHz, 200mV
f = 10kHz, 200mV
Guaranteed by design
R
Measured between OUT_+ and OUT_-,
T
R
peak voltage,
A-weighted,
32 samples per second
(Notes 4, 5, and 6)
R
P
(Note 4)
A-weighted
L to R, R to L, R
100m V
L to R, R to L, R
100m V
HP to SPKR, R
R
= V
A
A
A
AVDD
OUT
L
L
IN1
L
L
LHP
= 40.2kΩ (A
= +25°C
= +25°C
= 8Ω, P
= 4Ω, P
= +25°C
= 8Ω,
= 8Ω
CPGND
= 20kΩ
= 32Ω, f
= 1.2W f
R M S
R M S
= V
OUT
OUT
PVDD
, f
, f
= 0, I
I N
I N
IN
IN
LSPKR
VHP
CONDITIONS
L
= 1kH z ( N ote 4)
L
= 15kH z ( N ote 4)
= 500mW, f = 1kHz (Note 4)
= 500mW, f = 1kHz (Note 4)
= 1kHz (Note 4)
= 4.5V to 5.5V, T
P-P
= 8Ω, V
= 8Ω, V
= 1kHz,
LDO_OUT
R
(MAX9791)
R
(MAX9791)
R
(MAX9792)
R
(MAX9791)
R
(MAX9791)
R
(MAX9792)
P-P
P-P
L
L
L
L
L
L
= 0dB), C
= 4Ω
= 8Ω
= 3Ω
= 4Ω
= 8Ω
= 3Ω
= 8Ω, P
I N
I N
= - 20d BFS =
= - 20d BFS =
= 0, C
Into shutdown
Out of
shutdown
A-weighted
20Hz to 20kHz
HP
IN1
= 20mW,
= 470nF, C
LDO
A
= +25°C
= 2µF, C1 = C2 = 1µF. R
IN2
MIN
= C
60
COM
-52.4
= 1µF, T
TYP
0.04
0.03
1.7
1.2
2.2
1.5
3.7
-54
±3
80
73
75
62
20
12
98
94
38
78
70
77
3
L
= ∞, unless other-
A
MAX
±10
= T
MIN
to T
UNITS
µV
dBV
mV
dB
kΩ
dB
dB
dB
W
%
RMS
MAX
3
,