Datasheet

MAX4411
80mW, Fixed-Gain, DirectDrive, Stereo
Headphone Amplifier with Shutdown
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(PV
DD
= SV
DD
= 3V, PGND = SGND = 0V, SHDNL = SHDNR = SV
DD
, C1 = C2 = 2.2µF, C
IN
= 1µF, R
L
= ∞, T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
Note 1: All specifications are 100% tested at T
A
= +25°C; temperature limits are guaranteed by design.
Note 2: Inputs are connected directly to GND.
Note 3: Inputs are AC-coupled to ground.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
1.8V ≤ V
DD
≤ 3.6V,
MAX4411B
DC (Note 2) 69 86
f
RIPPLE
= 217Hz 86
f
RIPPLE
= 1kHz 73
Power-Supply Rejection Ratio PSRR
V
DD
= 3.0V, 200mV
P-P
ripple, MAX4411B
(Note 3)
f
RIPPLE
= 20kHz 51
dB
R
L
= 32Ω 65
Output Power P
OUT
THD+N ≤ 1%
T
A
= +25°C
R
L
= 16Ω 55 80
mW
R
L
= 32Ω, P
OUT
=
50mW
0.003
Total Harmonic Distortion Plus
Noise
THD+N
f
IN
= 1kHz
R
L
= 16Ω, P
OUT
=
60mW
0.004
%
MAX4411 94
Signal-to-Noise Ratio SNR
R
L
= 32Ω, P
OUT
=
20mW, f
IN
= 1kHz,
BW = 22Hz to 22kHz
MAX4411B 95
dB
Slew Rate SR 0.8 V/µs
Maximum Capacitive Load C
L
No sustained oscillations
150
pF
Crosstalk R
L
= 16Ω, P
OUT
= 1.6mW, f
IN
= 10kHz 90 dB
Thermal Shutdown Threshold
140
°C
Thermal Shutdown Hysteresis 15 °C
ESD Protection Human Body Model (OUTR, OUTL) ±8kV
Typical Operating Characteristics
(C1 = C2 = 2.2µF, THD+N measurement bandwidth = 22Hz to 22kHz, T
A
= +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX4411 toc01
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01
0.1
1
0.001
10 100k
V
DD
= 3V
R
L
= 16
Ω
P
OUT
= 10mW
P
OUT
= 25mW
P
OUT
= 50mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX4411 toc02
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01
0.1
1
0.001
10 100k
P
OUT
= 5mW
P
OUT
= 10mW
P
OUT
= 25mW
V
DD
= 3V
R
L
= 32
Ω
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX4411 toc03
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01
0.1
1
0.001
10 100k
P
OUT
= 5mW
P
OUT
= 10mW
P
OUT
= 20mW
V
DD
= 1.8V
R
L
= 16
Ω