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WM8988 Datasheet(PDF) 6 Page - Wolfson Microelectronics plc

Part # WM8988
Description  Stereo CODEC for Portable Audio Applications
PDF  56 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8988 Datasheet(HTML) 6 Page - Wolfson Microelectronics plc

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WM8988
Production Data
w
PD, Rev 4.0, October 2008
6
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.5V, DBVDD = 2.4V, AVDD = HPVDD =2.4V , TA = +25
oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio
data unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Analogue Inputs (LINPUT1, RINPUT1, LINPUT2, RINPUT2) to ADC out
AVDD = 3.3V
0.95
1.0
1.05
AVDD = 2.4V
0.690
0.727
0.763
Full Scale Input Signal Level
(for ADC 0dB Input at 0dB Gain)
VINFS
AVDD = 1.8V
0.480
0.545
0.610
Vrms
L/RINPUT1 to ADC,
PGA gain = 0dB
16
22
L/RINPUT1 to ADC,
PGA gain = +30dB
1.5
2.8
L/RINPUT2 to ADC
PGA gain = 0dB
16
22
Input Resistance
RIN
L/RINPUT2 to ADC
PGA gain = 30dB
1.5
2.8
k
Ω
Input Capacitance
10
pF
AVDD = 3.3V
80
93
AVDD = 2.4V
80
88
Signal to Noise Ratio
(A-weighted)
SNR
AVDD = 1.8V
78
87
dB
-1dBFs input,
AVDD = 3.3V
-81
-68
-1dBFS input,
AVDD = 2.4V
-80
-68
Total Harmonic Distortion
THD
-1dBFs input,
AVDD = 1.8V
-76
-65
dB
-1dBFs input,
AVDD = 3.3V
-75
-65
-1dBFS input,
AVDD = 2.4V
-70
-65
Total Harmonic Distortion +
Noise
THD+N
-1dBFs input,
AVDD = 1.8V
-70
-60
dB
1kHz signal
85
ADC Channel Separation
10kHz signal
85
dB
Channel Matching
1kHz signal
-0.5
0.2
+0.5
dB
Analogue Outputs (LOUT1/2, ROUT1/2)
AVDD = 3.3V
0.95
1.0
1.05
AVDD = 2.4V
0.690
0.727
0.763
0dB Full scale output voltage
VOUTFS
AVDD = 1.8V
0.507
0.545
0.583
Vrms
Mute attenuation
1kHz, full scale signal
90
dB
1kHz signal
85
Channel Separation
10kHz signal
85
dB
PGA Gain range
guaranteed monotonic
+6
-67
dB
PGA step size
0.25
1
1.25
dB



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