Preliminary Technical Data
WM3100
ELECTRICAL CHARACTERISTICS
Test Conditions
VDD=3.3V, GND=0V, TA = +25oC, 1VRMS 1kHz sinusoidal input signal unless otherwise stated
PARAMETER
Analogue Inputs
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Maximum full-scale input signal
level. (This changes in proportion
to VDD.)
1
VRMS
Input resistance
RIN
24
kΩ
Analogue Outputs
Full-scale output signal level. (This
changes in proportion to VDD.)
Full scale input signal, RL = 10kΩ
2.1
0
VRMS
DC offset
±3
mV
kΩ
pF
Minimum load resistance
Maximum load capacitance
RL
2.5
Without external RC filter
220
1
With recommended external RC filter
μF
Audio Performance
Signal to Noise ratio
SNR
A-weighted, 20Hz to 20kHz
unweighted, 20Hz to 20kHz
Single-ended inverting input
Single-ended non-inverting input
Differential input
108
104
-91
-95
-92
108
90
dB
dB
Total Harmonic Distortion + Noise
THD+N
(2.1VRMS output, 10kΩ load)
Dynamic range
DNR
A-weighted, -60dBV input
1kHz
dB
dB
Channel separation (L/R)
20Hz to 20kHz
80
Channel level matching
Channel phase deviation
Gain
1kHz
0.1
0.1
6.6
dB
degree
dB
1kHz
6.2
70
6.4
69
50
Power Supply Rejection Ratio
(VDD)
PSRR
100mV pk-pk, 1kHz
100mV pk-pk, 20Hz to 20kHz
M¯ ¯U¯T¯E¯ = 0
dB
Mute attenuation
dB
Output impedance
OUTMODE = 1
50
kΩ
(high impedance mute state)
Internal low-pass filter 3dB cut-off
Start-up time (from OFF)
Start-up time (from MUTE)
300
200
100
kHz
μs
μs
PTD, October 2010, Rev 2.0
5
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
