
Data Sheet
SSM2932
Rev. 0 | Page 3 of 16
SPECIFICATIONS
PVDD = 3.0 V, CCF = 1 μF, CCPVDD = CCPVSS = 2.2 μF, RL = 32 Ω, TA = 25°C, unless otherwise noted.
Table 1.
Parameter
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
DEVICE CHARACTERISTICS
Voltage Gain
AV
Input voltage = 100 mV rms
GAIN pin high
6
dB
GAIN pin low
0
dB
Output Power
PO
f = 1 kHz, THD = 1%
RL = 16 Ω, one channel
85
mW
RL = 32 Ω, one channel
50
mW
RL = 16 Ω, stereo
40
mW
RL = 32 Ω, stereo
45
mW
Total Harmonic Distortion Plus Noise
THD + N
PO = 10 mW per channel
0.01
%
Gain Matching
ΔAV
1
%
Frequency Range
Ripple within ±0.5 dB
20
20,000
Hz
Differential Input Impedance
ZIN
12
18
34.5
kΩ
CHARGE PUMP
Oscillator Frequency
fOSC0
Idle mode, VOUT = 0 V
54
kHz
fOSC1
Active mode
550
kHz
Headphone Amplifier Supply
Positive Rail
VCPVDD
Efficiency mode: VOUT < 0.2 V rms
PVDD/2
V
High power mode: VOUT > 0.2 V rms
2.2
V
Negative Rail
VCPVSS
Efficiency mode: VOUT < 0.2 V rms
PVDD/2
V
High power mode: VOUT > 0.2 V rms
2.2
V
Output Voltage Threshold
VTH1
Transition from efficiency mode to high
power mode
285
mV
VTH2
Transition from high power mode to
efficiency mode
375
mV
Charge Pump Transition Time
tRELEASE
Charge pump transition from high power
mode to efficiency mode
0.8
ms
tATTACK
Charge pump transition from efficiency
mode to high power mode
10
μs
NOISE PERFORMANCE
Output Voltage Noise
en
BW = 20 kHz, A-weighted, gain = 0 dB
12
μV rms
Signal-to-Noise Ratio
SNR
A-weighted
98
dB
Pop-and-Click Noise
VCP
60
dBV
Channel Separation
XTALK
Single-ended, 1 V rms, PO = 31 mW
86
dB
OUTPUT CHARACTERISTICS
Output Offset Voltage
|VOS|
0.25
mV
Capacitive Output Drive
CLOAD
150
pF
Slew Rate
SR
1.25
V/μs
STARTUP AND SHUTDOWN
Measured from SD rising edge
Start-Up Time
tSU
20
ms
Shutdown Time
tSD
36
μs
POWER SUPPLY
0°C < TA < 70°C
Supply Voltage Range
PVDD
Guaranteed from PSRR test
2.5
3.6
V
Quiescent Current
IDD
RL = 32 Ω + 200 pF; gain = 0 dB, PVDD = 3 V
1.7
mA
Shutdown Current
ISD
SD = GND
1
μA
Power Supply Rejection Ratio
PSRR
VRIPPLE = 100 mVPEAK, gain = 0 dB
f = 217 Hz
90
dB
f = 1 kHz
84
dB
f = 10 kHz
62
dB