Datasheet
Data Sheet SSM2518
Rev. A | Page 5 of 48
SPECIFICATIONS
All specifications at PVDD = 5.0 V, DVDD = 1.8 V, f
S
= 48 kHz, MCLK = 128 × f
S
, T
A
= 25°C, R
L
= 8 + 15 µH, LP_MODE = 0, volume
control = 0 dB, unless otherwise noted.
PERFORMANCE SPECIFICATIONS
Table 1.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
DEVICE CHARACTERISTICS
P
O
f = 1 kHz, BW = 20 kHz
Output Power
R
L
= 4 Ω, THD = 1%, PVDD = 5.0 V 2 W
R
L
= 4 Ω, THD = 10%, PVDD = 5.0 V 2.5 W
R
L
= 8 Ω, THD = 1%, PVDD = 5.0 V 1.42 W
R
L
= 8 Ω, THD = 10%, PVDD = 5.0 V 1.8 W
R
L
= 4 Ω, THD = 1%, PVDD = 3.6 V 1.3 W
R
L
= 4 Ω, THD = 10%, PVDD = 3.6 V 1.7 W
R
L
= 8 Ω, THD = 1%, PVDD = 3.6 V 0.75 W
R
L
= 8 Ω, THD = 10%, PVDD = 3.6 V 0.94 W
R
L
= 4 Ω, THD = 1%, PVDD = 2.5 V 0.4 W
R
L
= 4 Ω, THD = 10%, PVDD = 2.5 V 0.45 W
R
L
= 8 Ω, THD = 1%, PVDD = 2.5 V 0.275 W
R
L
= 8 Ω, THD = 10%, PVDD = 2.5 V 0.35 W
Efficiency η P
O
= 1.4 W, 8 Ω, PVDD = 5.0 V, normal operation 91 %
P
O
= 1.4 W, 8 Ω, PVDD = 5.0 V, ultralow EMI operation 86 %
THD + N P
O
= 0.5 W into 8 Ω each channel, f = 1 kHz, PVDD = 5 V 0.04 %
Total Harmonic Distortion
Plus Noise
P
O
= 0.25 W into 8 Ω each channel, f = 1 kHz, PVDD = 3.6 V 0.03 %
Channel Separation
X
TALK
P
O
= 1 W, f = 1 kHz, PVDD = 5 V 108 dB
Average Switching Frequency f
SW
280 kHz
Differential Output Offset V
OOS
2.0 mV
Power Supply Rejection Ratio PSRR
DC
PVDD = 2.5 V to 5.0 V 70 80 dB
PSRR
GSM
V
RIPPLE
= 100 mV rms at 217 Hz, dither input 80 dB
PSRR
GSM
V
RIPPLE
= 100 mV rms at 217 Hz, no input 100 dB
Supply Current I
PVDD
Dither input, no load, PVDD = 5.0 V 4.7 mA
PVDD
Dither input, no load, PVDD = 3.6 V 4.4 mA
Dither input, no load, PVDD = 2.5 V 3.8 mA
Software power-down, SD
= 1.8 V, SPWDN = 1, PVDD = 3.6 V
4 μA
Hardware power-down, SD
= 0 V, PVDD = 3.6 V
100 nA
DVDD I
DVDD
Dither input, no load, DVDD = 3.3 V 3.0 mA
Dither input, no load, DVDD = 1.8 V 1.5 mA
Dither input, no load, DVDD = 1.8 V, f
S
= 8 kHz 0.25 mA
Software power-down, SD
= 1.8 V, SPWDN = 1, DVDD = 1.8 V
2.5 μA
Hardware power-down, SD
= 0 V, DVDD = 1.8 V
100 nA
Output Noise Voltage e
n
PVDD = 5 V, f = 20 Hz to 20 kHz, dither input, A-weighted 50 μV
PVDD = 3.6 V, f = 20 Hz to 20 kHz, dither input, A-weighted 40 μV
Signal-to-Noise Ratio SNR A-weighted, referred to 0 dBFS, PVDD = 3.6 V 97 dB
Mute Attenuation Soft mute on 100 dB