MAX9725 Maxim Integrated Products, MAX9725 Datasheet - Page 3

• Manufacturer Part Number: MAX9725
• Description: Stereo Headphone Amplifier
• Manufacturer: Maxim Integrated Products

ELECTRICAL CHARACTERISTICS (continued)
(V
noted. Typical values are at T
Note 1: Input leakage current measurements limited by automated test equipment.
Note 2: f
Note 3: Testing performed with 32Ω resistive load connected to outputs. Mode transitions controlled by SHDN. K
(V
to 22kHz, T
Slew Rate
Maximum Capacitive Load
Crosstalk
Click/Pop Level
ESD Protection
DD
DD
1V, Low-Power, DirectDrive, Stereo Headphone
0.001
0.001
0.01
0.01
= 1.5V, PGND = SGND = 0V, V
= 1.5V, PGND = SGND = 0V, V
0.1
0.1
1
1
10
10
as 20 log [peak voltage under normal operation at rated power level / peak voltage during mode transition]. Inputs are AC-
grounded.
IN
PARAMETER
TOTAL HARMONIC DISTORTION PLUS
V
R
A
TOTAL HARMONIC DISTORTION PLUS
V
R
A
DD
L
V
DD
L
V
A
= 1kHz, T
= 16Ω
= -2V/V
= 32Ω
= -2V/V
= 1.5V
= 1V
= +25°C, unless otherwise noted.) (See the Functional Diagram.)
P
P
P
P
OUT
OUT
OUT
OUT
NOISE vs. FREQUENCY
NOISE vs. FREQUENCY
100
100
= 0.7mW
= 15mW
= 2mW
= 4mW
FREQUENCY (Hz)
FREQUENCY (Hz)
_______________________________________________________________________________________
A
= +25°C, THD+N < 1%, both channels driven in-phase.
1k
1k
A
= +25°C.) (See the Functional Diagram.)
10k
10k
SYMBOL
XTALK
V
SHDN
K
SHDN
SR
C
ESD
CP
L
100k
100k
= 1.5V, V
= 1.5V, V
No sustained oscillations
f
R
weighted, 32 samples per
second (Note 3)
Human Body Model (OUTR, OUTL)
IN
L
= 1.0kHz, R
= 32Ω, peak voltage, A-
0.001
0.001
0.01
100
0.01
0.1
10
0.1
SS
1
SS
1
10
0
= PV
= PV
TOTAL HARMONIC DISTORTION PLUS
V
R
A
TOTAL HARMONIC DISTORTION PLUS
V
R
A
DD
L
V
DD
L
V
= 32Ω
= -2V/V
= 16Ω
= -2V/V
= 1.5V
= 1.5V
SS
P
NOISE vs. OUTPUT POWER
SS,
L
P
OUT
OUT
, C1 = C2 = 1µF, C
NOISE vs. FREQUENCY
10
= 32Ω, P
100
CONDITIONS
C1 = C2 = 1µF, C
= 12mW
OUTPUT POWER (mW)
= 2mW
Amplifier with Shutdown
FREQUENCY (Hz)
20
OUT
1k
Typical Operating Characteristics
f
f
IN
IN
= 20Hz
= 1kHz
= 5mW
f
IN
30
Into shutdown
Out of shutdown
10k
= 10kHz
IN
IN
= 1µF, R
= 1µF, THD+N measurement bandwidth = 22Hz
100k
40
L
0.001
= ∞, T
0.001
0.01
100
0.01
0.1
10
0.1
1
1
10
0
MIN
A
TOTAL HARMONIC DISTORTION PLUS
TOTAL HARMONIC DISTORTION PLUS
V
R
A
V
R
A
DD
L
V
DD
L
V
= T
= 32Ω
= 16Ω
= -2V/V
= -2V/V
= 1V
= 1.5V
P
P
NOISE vs. OUTPUT POWER
OUT
MIN
OUT
NOISE vs. FREQUENCY
10
100
= 0.7mW
= 4mW
OUTPUT POWER (mW)
TYP
72.8
72.8
to T
150
100
0.2
±8
FREQUENCY (Hz)
MAX,
CP
f
f
20
IN
IN
1k
= 20Hz
= 1kHz
level calculated
unless otherwise
MAX
f
IN
= 10kHz
30
10k
UNITS
V/µs
pF
dB
dB
kV
100k
40
3