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SSM4321 数据表(PDF) 4 Page - Analog Devices

部件名 SSM4321
功能描述  Mono 2.9 W Class-D Audio Amplifier
PDF  24 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

SSM4321 数据表(HTML) 4 Page - Analog Devices

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SSM4321
Data Sheet
Rev. 0 | Page 4 of 24
SPECIFICATIONS
PVDD = 5.0 V, IOVDD = 1.8 V, fS = 24 kHz with I2S output, TA = 25°C, RL = 8 Ω +33 µH, unless otherwise noted. For RL = 8 Ω, use a
200 mΩ V/I sense resistor; for RL = 4 Ω, use a 100 mΩ V/I sense resistor; for RL = 3 Ω, use a 75 mΩ V/I sense resistor.
Table 1.
Parameter
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
DEVICE CHARACTERISTICS
Output Power, RMS
P
OUT
f = 1 kHz, 20 kHz bandwidth
R
L = 8 Ω, THD = 1%, PVDD = 5.0 V
1.35
W
R
L = 8 Ω, THD = 1%, PVDD = 3.6 V
0.70
W
R
L = 8 Ω, THD = 1%, PVDD = 2.5 V
0.32
W
R
L = 8 Ω, THD = 10%, PVDD = 5.0 V
1.70
W
R
L = 8 Ω, THD = 10%, PVDD = 3.6 V
0.86
W
R
L = 8 Ω, THD = 10%, PVDD = 2.5 V
0.4
W
R
L = 4 Ω, THD = 1%, PVDD = 5.0 V
2.22
W
R
L = 4 Ω, THD = 1%, PVDD = 3.6 V
1.12
W
R
L = 4 Ω, THD = 1%, PVDD = 2.5 V
0.51
W
R
L = 4 Ω, THD = 10%, PVDD = 5.0 V
2.8
W
R
L = 4 Ω, THD = 10%, PVDD = 3.6 V
1.42
W
R
L = 4 Ω, THD = 10%, PVDD = 2.5 V
0.64
W
R
L = 3 Ω, THD = 1%, PVDD = 5.0 V
3.00
W
R
L = 3 Ω, THD = 1%, PVDD = 3.6 V
1.51
W
R
L = 3 Ω, THD = 1%, PVDD = 2.5 V
0.68
W
R
L = 3 Ω, THD = 10%, PVDD = 5.0 V
3.77
W
R
L = 3 Ω, THD = 10%, PVDD = 3.6 V
1.90
W
R
L = 3 Ω, THD = 10%, PVDD = 2.5 V
0.86
W
Efficiency
η
P
OUT = 1.4 W into 8 Ω, PVDD = 5.0 V
89
%
P
OUT = 2.8 W into 3 Ω, PVDD = 5.0 V
82
%
Total Harmonic Distortion
Plus Noise
THD + N
P
OUT = 1 W into 8 Ω, f = 1 kHz,
PVDD = 5.0 V
0.01
%
P
OUT = 0.5 W into 8 Ω, f = 1 kHz,
PVDD = 3.6 V
0.01
%
Input Common-Mode Voltage
Range
V
CM
1.0
PVDD − 1
V
Common-Mode Rejection Ratio
CMRR
GSM
V
CM = 100 mV rms at 1 kHz
50
dB
Average Switching Frequency
f
SW
256
kHz
Clock Frequency
f
OSC
6.2
MHz
Differential Output Offset Voltage
V
OOS
Gain = 6 dB
0.3
5.0
mV
POWER SUPPLY
Supply Voltage Range
PVDD
Guaranteed from PSRR test
2.5
5.5
V
IOVDD
1.42
3.6
V
Power Supply Rejection Ratio
PSRR
GSM
V
RIPPLE = 100 mV at 217 Hz, inputs are
ac-grounded, C
IN = 0.1 µF
86
dB
Supply Current, PVDD
I
SYPVDD
V
IN = 0 V
No load, PVDD = 5.0 V
3.7
mA
No load, PVDD = 3.6 V
3.1
mA
No load, PVDD = 2.5 V
2.9
mA
R
L = 8 Ω, PVDD = 5.0 V
3.8
mA
R
L = 8 Ω, PVDD = 3.6 V
3.2
mA
R
L = 8 Ω, PVDD = 2.5 V
2.9
mA
Supply Current, IOVDD
I
SYIOVDD
IOVDD = 1.8 V
0.41
mA
Shutdown Current, PVDD
I
SDPVDD
No BCLK, PVDD = 5.0 V
0.1
µA
Shutdown Current, IOVDD
I
SDIOVDD
No BCLK, IOVDD = 1.8 V
0.77
µA



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