max9791 Maxim Integrated Products, Inc., max9791 Datasheet - Page 4

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

Windows Vista-Compliant Class D Speaker
Amplifiers with DirectDrive Headphone Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(V
wise specified. R
unless otherwise noted. Typical values are at T
4
Class D Switching Frequency
Spread-Spectrum Bandwidth
Efficiency
HEADPHONE 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
Maximum Capacitive Load Drive
Crosstalk
AVDD
_______________________________________________________________________________________
= V
PARAMETER
PVDD
IN1
= V
= 20kΩ (A
HPVDD
= 5V, V
VSPKR
GND
SYMBOL
= 12dB), R
THD+N
PSRR
P
R
SNR
f
V
K
= V
SPK
V
C
OUT
A
FHP
η
OS
CP
N
V
L
PGND
A
= +25°C.) (Note 3)
IN2
P
THD+N = 1%,
f = 1kHz,
T
R
V
R
V
R
R
V
f = 1kHz, V
f = 10kHz, V
R
T
R
peak voltage,
A-weighted, 32 samples
per second (Notes 5, 6)
R
f
A-weighted
No sustained oscillations
L to R, R to L, f
= 1kHz, COM
and SENSE
connected
L to R, R to L, f
= 15kHz, COM
and SENSE
connected
SPKR to HP, R
R
= V
IN
OUT
A
A
IN
IN
HPVDD
L
L
L
L
IN2
L
L
LHP
= 40.2kΩ (A
= +25°C
= 32Ω, f
= 10kΩ, f
= 32Ω, P
= 16Ω, P
= +25°C
= 32Ω,
= 32Ω, P
= 1kHz
CPGND
= -3dBFS = 212mV
= -3dBFS = 500mV
= 40.2kΩ
= 32Ω, f
= 1.5W, f
= 2.7V to 5.5V, T
RIPPLE
IN
= 0, I
OUT
OUT
OUT
RIPPLE
IN
= 6kHz, 20kHz AES17,
IN
LSPKR
VHP
IN
IN
IN
CONDITIONS
= 6kHz, 20kHz AES17,
= 1Hz
= 100mW, f = 1kHz
= 75mW, f = 1kHz
= 40mW,
LDO_OUT
= 1kHz, R
= 200mV
= 0dB), C
= 200mV
R
-20dBFS = 30mV
R
-20dBFS = 0.7mV
R
-20dBFS = 30mV
R
-20dBFS = 70.7mV
= 8Ω, P
L
L
L
L
= 32Ω, V
= 10kΩ, V
= 32Ω, V
= 10kΩ, V
RMS
RMS
R
R
A
L
L
= 0, C
= 16Ω
= 32Ω
= +25°C
P-P
L
Into shutdown
Out of
shutdown
A-weighted
20Hz to 20kHz
P-P
SPKR
= 8Ω (Note 4)
IN1
IN
IN
= 470nF, C
IN
IN
LDO
=
=
= 1W,
=
=
RMS
RMS
RMS
= 2µF, C1 = C2 = 1µF. R
RMS
IN2
MIN
= C
38.2
948
70
COM
0.006
0.014
-72.5
= 1µF, T
TYP
±0.3
±15
40.2
100
180
107
102
100
-78
-87
-81
83
91
80
94
82
89
64
70
80
0
8
L
= ∞, unless other-
A
MAX
1158
42.2
±3
= T
MIN
to T
UNITS
µV
dBFS
kHz
kHz
dBV
mW
mV
dB
kΩ
dB
dB
pF
dB
%
%
RMS
MAX
,