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SSM2304 Datasheet(Fiches technique) 4 Page - Analog Devices

Numéro de pièce SSM2304
Description  2 W Filterless Class-D Stereo Audio Amplifier
Télécharger  19 Pages
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SSM2304
Preliminary Technical Data
SPECIFICATIONS
VDD = 5.0 V, TA = 25oC, RL = 8 Ω, Gain=6dB, unless otherwise noted
Table 1.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
DEVICE CHARACTERISTICS
Output Power
PO
RL = 4 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V
W
RL = 8 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V
1.4
W
RL = 4 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V
TBD
W
RL = 8 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V
0.615
W
RL = 4 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 2.5 V
TBD
W
RL = 8 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 2.5 V
0.275
W
RL = 4 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V
3.3
W
RL = 8 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V
1.53
W
RL = 4 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V
TBD
W
RL = 8 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V
0.77
W
RL = 4 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 2.5 V
TBD
W
RL = 8 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 2.5 V
0.35
W
Efficiency
η
POUT = 2.5 W, 4 Ω, VDD = 5.0 V
87
%
POUT = 1.4 W, 8 Ω, VDD = 5.0 V
85
%
Total Harmonic Distortion + Noise
THD + N
PO = 2 W into 4 Ω each channel, f = 1 kHz, VDD = 5.0 V
0.2
%
PO = 1 W into 8 Ω each channel, f = 1 kHz, VDD = 3.6 V
0.25
%
Input Common-Mode Voltage Range
VCM
1.0
VDD − 1
V
Common-Mode Rejection Ratio
CMRRGSM
VCM = 2.5 V ± 100 mV at 217 Hz
60
dB
Channel Separation
XTALK
PO = 100 mW , f = 1 kHz
78
dB
Average Switching Frequency
fSW
1.8
MHz
Differential Output Offset Voltage
VOOS
G = 6 dB
2.0
mV
POWER SUPPLY
Supply Voltage Range
VDD
Guaranteed from PSRR test
2.5
5.0
V
Power Supply Rejection Ratio
PSRR
VDD = 2.5 V to 5.0 V , 50 Hz, input floating/ground
70
85
dB
PSRRGSM
VRIPPLE = 100 mV rms at 217 Hz, inputs ac GND,
CIN = 0.01 μF, input referred
70
dB
Supply Current
ISY
VIN = 0 V, no load, VDD = 5.0 V
7.0
mA
VIN = 0 V, no load, VDD = 3.6 V
6.5
mA
VIN = 0 V, no load, VDD = 2.5 V
5.2
mA
Shutdown Current
ISD
SD = GND
20
nA
GAIN CONTROL
Closed-Loop Gain
Av0
GAIN1 = 0 V
6
dB
Av1
GAIN2 = VDD
12
dB
Differential Input Impedance
ZIN
SD = VDD, Av0 and Av1 modes
37.5
SD = GND
210
SHUTDOWN CONTROL
Input Voltage High
VIH
ISY ≥ 1 mA
1.2
V
Input Voltage Low
VIL
ISY ≤ 300 nA
0.5
V
Turn-On Time
tWU
SD rising edge from GND to VDD
30
ms
Turn-Off Time
tSD
SD falling edge from VDD to GND
5
μs
Output Impedance
ZOUT
SD = GND
>100
NOISE PERFORMANCE
Output Voltage Noise
en
VDD = 3.6 V, f = 20 Hz to 20 kHz, inputs are ac
grounded, AV = 6 dB, A weighting
35
μV
Signal-to-Noise Ratio
SNR
POUT = 2.5 W, RL = 4 Ω
98
dB
Rev. PrD | Page 4 of 19




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