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WM8988 Datasheet(PDF) 7 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) 7 Page - Wolfson Microelectronics plc

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Production Data
WM8988
w
PD, Rev 4.0, October 2008
7
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
DAC to Line-Out (L/ROUT1 or L/ROUT2 with 10k
Ω / 50pF load)
DACMIXBIAS=0
88
100
AVDD=3.3V
HPCOM=LC
OM=0
DACMIXBIAS=1
99
DACMIXBIAS=0
97
AVDD = 2.4V
HPCOM=LC
OM=1
DACMIXBIAS=1
88
96
DACMIXBIAS=0
96
Signal to Noise Ratio
(A-weighted)
SNR
AVDD=1.8V
HPCOM=LC
OM=0
DACMIXBIAS=1
85
95
dB
DACMIXBIAS=0
-90
-75
AVDD=3.3V
HPCOM=LC
OM=0
DACMIXBIAS=1
-89
DACMIXBIAS=0
-83
AVDD = 2.4V
HPCOM=LC
OM=1
DACMIXBIAS=1
-82
-75
DACMIXBIAS=0
-80
Total Harmonic Distortion
THD
AVDD=1.8V
HPCOM=LC
OM=0
DACMIXBIAS=1
-79
-65
dB
DACMIXBIAS=0
-88
-70
AVDD=3.3V
HPCOM=LC
OM=0
DACMIXBIAS=1
-87
DACMIXBIAS=0
-75
AVDD = 2.4V
HPCOM=LC
OM=1
DACMIXBIAS=1
-74
-70
DACMIXBIAS=0
-75
Total Harmonic Distortion +
Noise
THD+N
AVDD=1.8V
HPCOM=LC
OM=0
DACMIXBIAS=1
-74
-65
dB
1kHz signal
100
Channel Separation
10kHz signal
85
dB
dB
Ground noise rejection
10mV, 20kHz noise on
LCOM/HPCOM, LCOM/HPCOM
enabled
40
dB
Headphone Output (LOUT1/ROUT1, LOUT2/ROUT2 AC coupled to load)
Output Power per channel
PO
Output power is very closely correlated with THD; see below.
HPVDD=1.8V, RL=32
Ω
PO=5mW
HPCOM=LCOM=0
DACMIXBIAS=1
0.013
-78
%
dB
HPVDD=1.8V, RL=16
Ω
PO=5mW
HPCOM=LCOM=0
DACMIXBIAS=1
0.010
-80
HPVDD=2.4V, RL=32
Ω,
PO=5mW
HPCOM=LCOM=1
DACMIXBIAS=1
0.010
-80
Total Harmonic Distortion
THD
HPVDD=2.4V, RL=16
Ω,
PO=5mW
HPCOM=LCOM=1
DACMIXBIAS=1
0.013
-78
0.032
-70



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