MAX9879 Maxim Integrated Products, MAX9879 Datasheet - Page 4

• Manufacturer Part Number: MAX9879
• Description: Stereo Class D Audio Subsystem
• Manufacturer: Maxim Integrated Products

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Stereo Class D Audio Subsystem
with DirectDrive Headphone Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(V
0dB, BYPASS = 0, SHDN = 1. Speaker loads connected between OUT_+ and OUT_-. Headphone loads connected from HPL or HPR to
GND. R
(Notes 3, 4)
4
Current Limit
Efficiency
Speaker Gain
Output Noise
Crosstalk
HEADPHONE AMPLIFIERS
Output Offset Voltage
Click-and-Pop Level
Power-Supply Rejection Ratio
(Note 5)
Output Power
Headphone Gain
Channel-to-Channel Gain
Tracking
Total Harmonic Distortion + Noise
DD
_______________________________________________________________________________________
= V
SPK
PVDDL
PARAMETER
= ∞, R
= V
HP
PVDDR
= ∞. C1 = C2 = C
= 3.7V, V
CCIO
SYMBOL
THD+N
PSRR
P
V
K
= 1.8V, V
BIAS
A
OUT
A
η
OS
CP
V
V
= 1µF. T
P
A-weighted, (ENA = 1 and ENB = 0
or ENA = 0 and ENB = 1), ΔIN_ = 0
OUTL to OUTR, OUTR to OUTL,
f = 20Hz to 20kHz
T
T
E N B = 0 or E N A = 0 and E N B = 1, ΔIN _ = 0)
Peak voltage, T
A-weighted, 32 samples
per second, volume at
mute (Note 5)
T
THD+N = 1%
T
ENA=1 and ENB = 0 or ENA = 1 and ENB
= 0, ΔIN_ = 0
R
(P
R
(P
GND
A
A
A
A
OUT
HP
HP
OUT
OUT
= +25°C (volume at mute)
= + 25° C ( V ol um e at 0d B, E N A = 1 and
= +25°C
= +25°C, HPL to HPR, volume at 0dB,
= 32Ω
= 16Ω
A
= V
= 600mW, f = 1kHz
= 10mW, f = 1kHz)
= 10mW, f = 1kHz)
= T
PGNDL
MIN
to T
CONDITIONS
A
= V
= 25°C
MAX
PGNDR
, unless otherwise noted. Typical values are at T
= 0. Single-ended inputs, preamp = 0, volume controls =
Into shutdown
Out of shutdown
PVDD_ = V
= 2.7V to 5.5V
f = 217Hz,
V
= 100mV
f = 1kHz,
V
= 100mV
f = 20kHz,
V
= 100mV
R
R
RIPPLE
RIPPLE
RIPPLE
HP
HP
= 16Ω
= 32Ω
P-P
P-P
P-P
DD
MIN
17.4
2.6
70
±0.22
0.018
0.037
±1.5
±0.3
TYP
-75
-75
1.5
85
84
80
62
58
54
88
18
63
75
3
±0.85
MAX
±2.5
0.08
18.4
3.4
A
= +25°C.)
UNITS
µV
dBV
mW
mV
mV
dB
dB
dB
dB
%
%
%
A
RMS