Data Sheet SSM2517
Rev. B | Page 3 of 16
SPECIFICATIONS
PVDD = 5.0 V, VDD = 1.8 V, f
S
= 128×, T
A
= 25°C, R
L
= 8 Ω + 33 μH, unless otherwise noted. When f
S
= 128×, PDM clock = 6.144 MHz;
when f
S
= 64×, PDM clock = 3.072 MHz.
Table 1.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
DEVICE CHARACTERISTICS
Output Power P
O
f = 1 kHz, BW = 20 kHz
R
L
= 4 Ω, THD = 1%, PVDD = 5.0 V 2.4 W
R
L
= 8 Ω, THD = 1%, PVDD = 5.0 V 1.38 W
R
L
= 4 Ω, THD = 1%, PVDD = 3.6 V 1.2 W
R
L
= 8 Ω, THD = 1%, PVDD = 3.6 V 0.7 W
R
L
= 4 Ω, THD = 10%, PVDD = 3.6 V 1.5 W
R
L
= 8 Ω, THD = 10%, PVDD = 3.6 V 0.9 W
Total Harmonic Distortion Plus Noise THD + N f = 1 kHz, BW = 20 kHz
P
O
= 100 mW into 8 Ω, PVDD = 3.6 V 0.035 %
P
O
= 500 mW into 8 Ω, PVDD = 3.6 V 0.1 %
P
O
= 1 W into 8 Ω, PVDD = 5.0 V 0.12 %
R
L
= 4 Ω, −6 dBFS input, PVDD = 5.0 V 3.6 %
R
L
= 8 Ω, −6 dBFS input, PVDD = 5.0 V 1.0 %
R
L
= 4 Ω, −6 dBFS input, PVDD = 3.6 V 5.2 %
R
L
= 8 Ω, −6 dBFS input, PVDD = 3.6 V 2.3 %
Efficiency η P
O
= 2.4 W into 4 Ω, PVDD = 5.0 V 86 %
P
O
= 1.38 W into 8 Ω, PVDD = 5.0 V 92 %
Average Switching Frequency f
SW
No input 290 kHz
Closed-Loop Gain Gain
−6 dBFS PDM input, BTL output,
f = 1 kHz
PVDD = 3.6 V 3.5 V
P
PVDD = 5.0 V 4.78 V
P
Differential Output Offset Voltage V
OOS
Gain = 6 dB 0.5 mV
Low Power Mode Wake Time t
WAKE
0.5 ms
Input Sampling Frequency f
S
f
S
= 64× 1.84 3.072 3.23 MHz
f
S
= 128× 3.68 6.144 6.46 MHz
POWER SUPPLY
Supply Voltage Range
Amplifier Power Supply PVDD 2.5 3.6 5.5 V
Digital Power Supply VDD 1.62 1.8 3.6 V
Power Supply Rejection Ratio PSRR
GSM
V
RIPPLE
= 100 mV at 217 Hz 85 dB
Supply Current, H-Bridge I
PVDD
Dither input, 8 Ω + 33 μH load
PVDD = 5.0 V, f
S
= 64× 3.1 mA
PVDD = 5.0 V, f
S
= 128× 3.2 mA
PVDD = 3.6 V, f
S
= 64× 2.6 mA
PVDD = 3.6 V, f
S
= 128× 2.7 mA
PVDD = 2.5 V, f
S
= 64× 2.2 mA
PVDD = 2.5 V, f
S
= 128× 2.3 mA
Standby Current PVDD = 5.0 V 0.0 mA
Power-Down Current 100 nA
Supply Current, Modulator I
VDD
Dither input, 8 Ω + 33 μH load
VDD = 3.3 V, f
S
= 64× 1.3 mA
VDD = 3.3 V, f
S
= 128× 2.4 mA
VDD = 1.8 V, f
S
= 64× 0.6 mA
VDD = 1.8 V, f
S
= 128× 1.2 mA
