SSM2804
Rev. 0 | Page 4 of 36
SPECIFICATIONS
T
A
= 25°C, AVDD = 3.3 V, PVDD = 3.6 V, gain = 0 dB, unless otherwise noted.
Table 1.
Parameter Min Typ Max Unit Test Conditions/Comments
POWER SUPPLY
Analog Voltage Supply (AVDD) 2.5 3.3 3.6 V
Speaker Voltage Supply (PVDD) 2.7 3.6 5.5 V
Total Quiescent Current (I
DD
) 3.5 mA HP mode only
6.0 mA Stereo Class-D mode only
9.8 mA HP and Class-D modes
400 µA Receiver path mode
Power-Down Current (I
SD
) 1 µA
SD
pin low
INPUT CHARACTERISTICS
Turn-On Time 10 ms
SD
rising edge from AGND to AVDD
PGA Mode Operation
Input Impedance 38 54 kΩ Minimum gain setting
4.5 6.5 kΩ Maximum gain setting
Gain Range −12 +18 dB INAx, INBx, INCx inputs, 31 steps
Boost Mode Operation
Input Impedance 20 kΩ
Gain Range 0 20 dB INAx, INBx, INCx inputs, 3 steps
CLASS-D AMPLIFIER
Output Offset Voltage (V
OS
) 2.3 mV Output muted
12 mV Output unmuted
Output Power (P
OUT
) f = 1 kHz, mono operation
310 mW PVDD = 2.7 V, R
L
= 8 Ω + 33 µH, THD + N = 1%
700 mW PVDD = 3.6 V, R
L
= 8 Ω + 33 µH, THD + N = 1%
1.0 W PVDD = 4.2 V, R
L
= 8 Ω + 33 µH, THD + N = 1%
1.4 W PVDD = 5.0 V, R
L
= 8 Ω + 33 µH, THD + N = 1%
700 mW PVDD = 2.7 V, R
L
= 4 Ω + 15 µH, THD + N = 1%
1.5 W PVDD = 3.6 V, R
L
= 4 Ω + 15 µH, THD + N = 1%
2.0 W PVDD = 4.2 V, R
L
= 4 Ω + 15 µH, THD + N = 1%
2.9 W PVDD = 5.0 V, R
L
= 4 Ω + 15 µH, THD + N = 1%
400 mW PVDD = 2.7 V, R
L
= 8 Ω + 33 µH, THD + N = 10%
860 mW PVDD = 3.6 V, R
L
= 8 Ω + 33 µH, THD + N = 10%
1.2 W PVDD = 4.2 V, R
L
= 8 Ω + 33 µH, THD + N = 10%
1.7 W PVDD = 5.0 V, R
L
= 8 Ω + 33 µH, THD + N = 10%
900 mW PVDD = 2.7 V, R
L
= 4 Ω + 15 µH, THD + N = 10%
1.8 W PVDD = 3.6 V, R
L
= 4 Ω + 15 µH, THD + N = 10%
2.5 W PVDD = 4.2 V, R
L
= 4 Ω + 15 µH, THD + N = 10%
3.6 W PVDD = 5.0 V, R
L
= 4 Ω + 15 µH, THD + N = 10%
Total Harmonic Distortion Plus Noise
(THD + N)
0.01 % R
L
= 8 Ω + 33 µH, P
OUT
= 250 mW
Output Noise (V
n
) 40 µV 20 Hz to 20 kHz, A-weighted
Signal-to-Noise Ratio (SNR) 94 dB 2.0 V rms output, A-weighted, PVDD = 5 V
Power Supply Rejection Ratio (PSRR) 80 dB 217 Hz, 200 mV p-p ripple
80 dB 1 kHz, 200 mV p-p ripple
Common-Mode Rejection Ratio (CMRR) 55 dB Differential input mode, 1 kHz, 10 mV rms
Efficiency 89 % P
OUT
= 700 mW
Minimum Load Resistance (R
LOAD
) 4 Ω
Average Switching Frequency (f
SW
) 400 kHz
Volume Control Gain Range −63 +12 dB
