MAX9721 查看數據表（PDF） - Maxim Integrated
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MAX9721 Datasheet PDF : 14 Pages
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1V, Fixed-Gain, DirectDrive, Stereo Headphone
Amplifier with Shutdown
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 1.5V, PGND = SGND = 0V, VSHDN = 1.5V, VSS = PVSS, C1 = C2 = 1µF, CIN = 1µF, RL = ∞, TA = TMIN to TMAX, unless otherwise
noted. Typical values are at TA = +25°C.) (See the Functional Diagram.)
PARAMETER
Signal-to-Noise Ratio
Slew Rate
Maximum Capacitive Load
Crosstalk
ESD Protection
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
BW = 22Hz to 22kHz
89
SNR RL = 32Ω, POUT = 12mW
dB
A-weighted filter
92
SR
0.2
V/µs
CL No sustained oscillations
XTALK fIN = 1.0kHz, RL = 32Ω, POUT = 5mW
150
pF
100
dB
VESD Human body model (OUTR, OUTL)
±8
kV
Note 1: Input leakage current measurements limited by automated test equipment.
Note 2: fIN = 1kHz, TA = +25°C, THD+N < 1%, both channels driven in-phase.
Typical Operating Characteristics
(VDD = 1.5V, PGND = SGND = 0V, VSHDN = 1.5V, VSS = PVSS, C1 = C2 = 1µF, CIN = 1µF, THD+N measurement bandwidth = 22Hz
to 22kHz, TA = +25°C, unless otherwise noted.) (See the Functional Diagram.)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
1
VDD = 1.5V
RL = 16Ω
AV = -2V/V
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
1
VDD = 1.5V
RL = 32Ω
AV = -2V/V
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
1
VDD = 1V
RL = 16Ω
AV = -2V/V
0.1
POUT = 15mW
0.1
POUT = 2mW
0.1
POUT = 0.7mW
0.01
POUT = 2mW
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
1
VDD = 1V
RL = 32Ω
AV = -2V/V
0.1
POUT = 0.7mW
0.01
POUT = 4mW
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
0.01
POUT = 12mW
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
100
VDD = 1.5V
RL = 16Ω
10 AV = -2V/V
fIN = 20Hz
fIN = 1kHz
0.01
POUT = 4mW
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
100
VDD = 1.5V
RL = 32Ω
10 AV = -2V/V
fIN = 20Hz
fIN = 1kHz
1
1
fIN = 10kHz
fIN = 10kHz
0.1
0.1
0.01
0.01
0.001
0.001
0
10
20
30
40
0
10
20
30
40
OUTPUT POWER (mW)
OUTPUT POWER (mW)
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