SSM2315
Rev. A | Page 3 of 16
SPECIFICATIONS
VDD = 5.0 V, TA = 25oC, RL = 8 Ω + 33 μH, unless otherwise noted.
Table 1.
Parameter
Symbol
Min
Typ
Max
Unit
DEVICE CHARACTERISTICS
Output Power
PO
RL = 8 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V
1.48
W
RL = 8 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V
0.75
W
RL = 8 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V
1.84
W
RL = 8 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V
0.94
W
RL = 4 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V
2.72
W
RL = 4 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V
1.38
W
RL = 4 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V
W
RL = 4 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V
1.72
W
RL = 3 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V
3.43
W
RL = 3 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V
1.72
W
RL = 3 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V
W
RL = 3 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V
2.14
W
Efficiency
η
PO = 1.4 W, RL = 8 Ω + 33 μH, VDD = 5.0 V
93
%
Total Harmonic Distortion + Noise
THD + N
PO = 1 W, RL = 8 Ω + 33 μH, f = 1 kHz, VDD = 5.0 V
0.004
%
PO = 0.5 W, RL = 8 Ω + 33 μH, f = 1 kHz, VDD = 3.6 V
0.004
%
Input Common-Mode Voltage Range
VCM
1.0
VDD 1.0
V
Common-Mode Rejection Ratio
CMRRGSM
VCM = 2.5 V ± 100 mV at 217 Hz, output referred
55
dB
Average Switching Frequency
fSW
280
kHz
Differential Output Offset Voltage
VOOS
Gain = 6 dB
2.0
mV
POWER SUPPLY
Supply Voltage Range
VDD
Guaranteed from PSRR test
2.5
5.5
V
Power Supply Rejection Ratio
PSRR
VDD = 2.5 V to 5.0 V, dc input floating
70
85
dB
PSRRGSM
VRIPPLE = 100 mV at 217 Hz, inputs ac GND, CIN = 0.1 μF
60
dB
Supply Current
ISY
VIN = 0 V, no load, VDD = 5.0 V
3.2
mA
VIN = 0 V, no load, VDD = 3.6 V
2.8
mA
VIN = 0 V, no load, VDD = 2.5 V
2.4
mA
VIN = 0 V, load = 8
+ 33 μH, VDD = 5.0 V
3.3
mA
VIN = 0 V, load = 8
+ 33 μH, VDD = 3.6 V
2.9
mA
VIN = 0 V, load = 8
+ 33 μH, VDD = 2.5 V
2.4
mA
Shutdown Current
ISD
SD = GND
20
nA
GAIN CONTROL
Closed-Loop Gain
Gain
6
dB
Differential Input Impedance
ZIN
SD = VDD
80
kΩ
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
7
ms
Turn-Off Time
tSD
SD falling edge from VDD to GND
5
μs
Output Impedance
ZOUT
SD = GND
>100
kΩ
NOISE PERFORMANCE
Output Voltage Noise
en
VDD = 3.6 V, f = 20 Hz to 20 kHz, inputs are ac-grounded,
gain = 6 dB, A-weighted
21
μV rms
Signal-to-Noise Ratio
SNR
PO = 1.4 W, RL = 8 Ω
103
dB
1 Note that although the SSM2315 has good audio quality above 3 W, continuous output power beyond 3 W must be avoided due to device packaging limitations.
2 This value represents measured performance; packaging limitations must not be exceeded.