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WM8987LGECO/RV Datasheet(PDF) 7 Page - Wolfson Microelectronics plc

Part # WM8987LGECO/RV
Description  Stereo CODEC for Portable Audio Applications
PDF  58 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8987LGECO/RV Datasheet(HTML) 7 Page - Wolfson Microelectronics plc

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Pre-Production
WM8987L
w
PP Rev 3.0 January 2007
7
Test Conditions
DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, TA = +25
oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB,
ADCOSR = DACOSR = 1 (64 fs), 24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Signal to Noise Ratio
(A-weighted)
SNR
AVDD=HPVDD =3.3V
98
dB
Analogue Reference Levels
Midrail Reference Voltage
VMID
–3%
AVDD/2
+3%
V
Buffered Reference Voltage
VREF
–3%
AVDD/2
+3%
V
Microphone Bias
Bias Voltage
VMICBIAS
3mA load current
–5%
0.9
×AVDD
+ 5%
V
Bias Current Source
IMICBIAS
3
mA
Output Noise Voltage
Vn
1K to 20kHz
15
nV/
√Hz
Digital Input / Output
Input HIGH Level
VIH
0.7
×DBVDD
V
Input LOW Level
VIL
0.3
×DBVDD
V
Output HIGH Level
VOH
IOH = +1mA
0.9
×DBVDD
V
Output LOW Level
VOL
IOL = -1mA
0.1
×DBVDD
V



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