Product Preview
WM8983
Test Conditions
DCVDD=1.8V, AVDD1=AVDD2=DBVDD=AVDD2=3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless
otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Gain Hold Time (Note 2,4)
tHOLD
MCLK = 12.288MHz (Note 2) 0, 2.67, 5.33, 10.67, … , 43691
(time doubles with each step)
ms
Gain Ramp-Up (Decay) Time
(Note 3,4)
tDCY
ALCMODE=0 (ALC),
MCLK=12.288MHz (Note 2)
3.3, 6.6, 13.1, … , 3360
(time doubles with each step)
0.73, 1.45, 2.91, … , 744
(time doubles with each step)
0.83, 1.66, 3.33, … , 852
(time doubles with each step)
0.18, 0.36, 0.73, … , 186
(time doubles with each step)
80dB
ms
ms
dB
ALCMODE=1 (limiter),
MCLK=12.288MHz (Note 2)
Gain Ramp-Down (Attack) Time
(Note 3,4)
tATK
ALCMODE=0 (ALC),
MCLK=12.288MHz (Note 2)
ALCMODE=1 (limiter),
MCLK=12.288MHz (Note 2)
Mute Attenuation
Analogue to Digital Converter (ADC)
Signal to Noise Ratio (Note 5,6)
Total Harmonic Distortion
(Note 7)
A-weighted, 0dB gain
full-scale, 0dB gain
95
dB
dB
-84
Channel Separation (Note 8)
1kHz input signal
110
dB
Digital to Analogue Converter (DAC) to L/R Mix to Line-Out (LOUT1, ROUT1 with 10kΩ / 50pF load)
Full-scale output
PGA gains set to 0dB
A-weighted
AVDD1/3.3
Vrms
dB
Signal to Noise Ratio (Note 5,6)
Signal to Noise Ratio (Note 5,6)
Total Harmonic Distortion
(Note 7)
SNR
SNR
THD
95
98
95.5
-84
22Hz to 20kHz
RL = 10kΩ
full-scale signal
dB
dB
Channel Separation (Note 8)
Output Mixers (LMX1, RMX1)
PGA gain range into mixer
PGA gain step into mixer
1kHz signal
80
110
dB
-15
0
3
+6
+6
dB
dB
Analogue Outputs (LOUT1, ROUT1, LOUT2, ROUT2)
Programmable Gain range
-57
0
1
dB
dB
dB
Programmable Gain step size
Monotonic
1kHz, full scale signal
Headphone Output (AUX to L/RMIX to LOUT1, ROUT1. LOUT2, ROUT2 with 32Ω load)
Mute attenuation
85
0dB full scale output voltage
Signal to Noise Ratio
With > 32R load
A-weighted
AVDD1/3.3
102
Vrms
dB
%
SNR
THD
Total Harmonic Distortion
RL = 16Ω, Po=20mW
AVDD1=3.3V
0.003
-92
dB
%
RL = 32 Ω, Po=20mW
AVDD1=3.3V
0.008
- 82
dB
Headphone Output (DAC to L/RMIX to LOUT1, ROUT1 with 16Ω load)
Signal to Noise Ratio
Signal to Noise Ratio
SNR
SNR
A-weighted
90
dB
dB
22Hz to 20kHz
TBD
PP Rev 1.1 August 2005
7
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
