Datasheet

MAX4409
80mW, DirectDrive, Stereo Headphone
Amplifier with Common-Mode Sense
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
PVDD
= V
SVDD
= 3V, V
PGND
= V
SGND
= 0, SHDN = SV
DD
, C1 = C2 = 2.2µF, R
IN
= R
F
= R1 = R2 = 10kΩ, R
L
= ∞, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
Note 2: All specifications are 100% tested at T
A
= +25°C; temperature limits are guaranteed by design.
Note 3: Inputs are connected to ground and COM.
Note 4: Inputs are AC-coupled to ground. COM is connected to ground.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
R
L
= 32Ω,
P
OUT
= 50mW
0.002
Total Harmonic Distortion
Plus Noise
THD+N f
IN
= 1kHz
R
L
= 16Ω,
P
OUT
= 60mW
0.005
%
Signal-to-Noise Ratio (Note 4) SNR R
L
= 32Ω, P
OUT
= 20mW, f
IN
= 1kHz 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 55 dB
Thermal Shutdown Threshold 140 °C
Thermal Shutdown Hysteresis 15 °C
ESD Protection Human Body Model (OUTR, OUTL) ±8 kV
Typical Operating Characteristics
(C1 = C2 = 2.2µF, R
IN
= R
F
= R1 = R2 = 10kΩ, THD+N measurement bandwidth = 22Hz to 22kHz, T
A
= +25°C, unless otherwise noted.)
10 100 10k1k 100k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX4409 toc01
FREQUENCY (Hz)
THD+N (%)
1
0.1
0.001
0.01
V
DD
= 3V
R
L
= 16Ω
P
OUT
= 10mW
P
OUT
= 60mW
1
0.001
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
0.01
0.1
MAX4409 toc02
THD+N (%)
10 100 10k1k 100k
FREQUENCY (Hz)
V
DD
= 3V
R
L
= 32Ω
P
OUT
= 50mW
P
OUT
= 10mW
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX4409 toc03
THD+N (%)
1
0.1
0.001
0.01
V
DD
= 1.8V
R
L
= 16Ω
P
OUT
= 5mW
P
OUT
= 15mW
10 100 10k1k 100k
FREQUENCY (Hz)