SSM2304
Rev. 0 | Page 3 of 20
SPECIFICATIONS
V
DD
= 5.0 V; T
A
= 25
o
C; R
L
= 4 Ω, 8 Ω; gain = 18 dB; unless otherwise noted.
Table 1.
Parameter Symbol
Conditions
Min
Typ
Max
Unit
DEVICE CHARACTERISTICS
Output Power
P
O
R
L
= 4 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, V
DD
= 5.0 V
1.8
W
R
L
= 8 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, V
DD
= 5.0 V
1.4
W
R
L
= 4 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, V
DD
= 3.6 V
0.9
W
R
L
= 8 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, V
DD
= 3.6 V
0.615
W
R
L
= 4 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, V
DD
= 2.5 V
0.35
W
R
L
= 8 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, V
DD
= 2.5 V
0.275
W
R
L
= 4 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, V
DD
= 5.0 V
2.4
W
R
L
= 8 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, V
DD
= 5.0 V
1.53
W
R
L
= 4 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, V
DD
= 3.6 V
1.1
W
R
L
= 8 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, V
DD
= 3.6 V
0.77
W
R
L
= 4 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, V
DD
= 2.5 V
0.45
W
R
L
= 8 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, V
DD
= 2.5 V
0.35
W
Efficiency η
P
OUT
= 2 W, 4 Ω, V
DD
= 5.0 V
75
%
P
OUT
= 1.4 W, 8 Ω, V
DD
= 5.0 V
85
%
Total Harmonic Dist Noise
THD + N
P
O
= 2 W into 4 Ω each channel, f = 1 kHz, V
DD
= 5.0 V
0.2
%
P
O
= 1 W into 8 Ω each channel, f = 1 kHz, V
DD
= 3.6 V
0.25
%
Input Common-Mode Voltage Range
V
CM
1.0
V
DD
− 1
V
Common-Mode Rejection Ratio
CMRR
GSM
V
CM
= 2.5 V ± 100 mV at 217 Hz
60
dB
Channel Separation
X
TALK
P
O
= 100 mW
, f = 1 kHz
78
dB
Average Switching Frequency
f
SW
1.8
MHz
Differential Output Offset Voltage
V
OOS
2.0
mV
POWER SUPPLY
Supply Voltage Range
V
DD
Guaranteed from PSRR test
2.5
5.0
V
Power Supply Rejection Ratio
PSRR
V
DD
= 2.5 V to 5.0 V,
70
85
dB
PSRR
GSM
V
RIPPLE
= 100 mV rms at 217 Hz, inputs ac GND,
C
IN
= 0.01 μF, input referred
68
dB
Supply Current
I
SY
V
IN
= 0 V, no load, V
DD
= 5.0 V
7.0
mA
V
IN
= 0 V, no load, V
DD
= 3.6 V
6.5
mA
V
IN
= 0 V, no load, V
DD
= 2.5 V
5.2
mA
Shutdown Current
I
SD
SD = GND
20
nA
GAIN
Closed-Loop Gain
Av
Rext = 0
18
dB
Differential Input Impedance
Z
IN
SD = VDD
47
kΩ
SHUTDOWN CONTROL
Input Voltage High
V
IH
I
SY
≥ 1 mA
1.2
V
Input Voltage Low
V
IL
I
SY
≤ 300 nA
0.5
V
Turn-On Time
t
WU
SD rising edge from GND to V
DD
30
ms
Turn-Off Time
t
SD
SD falling edge from V
DD
to GND
5
μs
Output Impedance
Z
OUT
SD = GND
>100
kΩ
NOISE PERFORMANCE
Output Voltage Noise
e
n
V
DD
= 3.6 V, f = 20 Hz to 20 kHz, inputs are ac
grounded, A
V
= 6 dB, R
L
= 4 Ω, A weighting
22
μV
Signal-to-Noise Ratio
SNR
P
OUT
= 2.0 W, R
L
= 4 Ω
102
dB
OBSOLETE
