wm8988 Wolfson Microelectronics plc, wm8988 Datasheet - Page 6

• Manufacturer Part Number: wm8988
• Description: Stereo Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

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