max9725betct Maxim Integrated Products, Inc., max9725betct Datasheet - Page 4

• Manufacturer Part Number: max9725betct
• Description: Max9725 1v, Low-power, Directdrive, Stereo Headphone Amplifier With Shutdown
• Manufacturer: Maxim Integrated Products, Inc.

1V, Low-Power, DirectDrive, Stereo Headphone
Amplifier with Shutdown
ELECTRICAL CHARACTERISTICS (MAX9725E) (continued)
(V
to T
Note 1: All specifications are 100% tested at T
Note 2: Input leakage current measurements limited by automated test equipment.
Note 3: f
Note 4: Testing performed with 32Ω resistive load connected to outputs. Mode transitions controlled by SHDN. K
Note 5: Using existing resistors with 1% precision.
Note 6: R
4
(V
to 22kHz, T
Output Power (Note 3)
Total Harmonic Distortion Plus
Noise (Note 5)
Signal-to-Noise Ratio
Slew Rate
Maximum Capacitive Load
Crosstalk
Click-and-Pop Level
ESD Protection
Attenuation in Shutdown
DD
DD
MAX,
0.001
_______________________________________________________________________________________
0.01
= 1.5V, PGND = SGND = 0V, V
= 1.5V, PGND = SGND = 0V, V
0.1
1
unless otherwise noted. Typical values are at T
10
as 20 log [peak voltage under normal operation at rated power level / peak voltage during mode transition]. Inputs are AC-
grounded.
PARAMETER
IN
TOTAL HARMONIC DISTORTION PLUS
IN
V
R
A
DD
L
V
A
= 1kHz, T
= 16Ω
= -2V/V
= 10Ω, R
= 1.5V
= +25°C, unless otherwise noted.) (See the Functional Diagrams.)
P
P
OUT
OUT
NOISE vs. FREQUENCY
100
= 15mW
= 2mW
FREQUENCY (Hz)
A
F
= +25°C, THD+N < 1%, both channels driven in-phase.
=10kΩ.
1k
10k
SYMBOL
THD+N
A
XTALK
P
V
SHDN
SNR
TT(SD)
K
SR
C
OUT
ESD
SHDN
CP
L
100k
= 1.5V, V
= 1.5V, V
V
V
V
R
R
R
No sustained oscillations
f
R
A-weighted, 32 samples per
second (Note 4)
Human Body Model (OUTR, OUTL)
V
IN
DD
DD
DD
SHDN
L
L
L
L
A
= 32Ω, P
= 16Ω, P
= 32Ω, P
= 1.0kHz, R
= 32Ω, peak voltage,
= +25°C; temperature limits are guaranteed by design.
0.001
= 1.5V
= 1.0V, R
= 0.9V, R
0.01
SS
0.1
SS
1
= 0V
= PV
10
A
= PV
TOTAL HARMONIC DISTORTION PLUS
V
R
A
= +25°C.) (See the Functional Diagrams.) (Note 1)
DD
L
V
OUT
OUT
OUT
= 32Ω
= -2V/V
= 1.5V
SS
L
L
P
L
P
SS,
OUT
= 32Ω
= 32Ω
, C1 = C2 = 1µF, C
OUT
= 12mW, f = 1kHz
= 15mW, f = 1kHz
= 12mW
= 32Ω, P
NOISE vs. FREQUENCY
100
CONDITIONS
= 12mW
C1 = C2 = 1µF, C
= 2mW
FREQUENCY (Hz)
OUT
1k
R
R
R
R
Typical Operating Characteristics
L
L
L
L
BW = 22Hz to 22kHz
A-weighted filter
= 32Ω
= 16Ω
= 32Ω
= 10kΩ
= 5mW
Into shutdown
Out of shutdown
10k
IN
IN
= 1µF, R
= 1µF, THD+N measurement bandwidth = 22Hz
100k
L
= 32Ω, R
0.001
0.01
0.1
1
10
MIN
TOTAL HARMONIC DISTORTION PLUS
V
R
A
10
DD
L
V
F
= 16Ω
= -2V/V
= 1V
= 60kΩ, R
P
P
OUT
OUT
NOISE vs. FREQUENCY
100
= 0.7mW
= 4mW
0.006
0.015
-120
TYP
72.8
72.8
150
100
-75
0.3
24
25
89
±8
92
FREQUENCY (Hz)
7
6
IN
CP
1k
= 10kΩ, T
level calculated
MAX
10k
A
UNITS
= T
V/µs
dBV
mW
dB
pF
dB
dB
kV
%
MIN
100k