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WM8946ECS/R Datasheet(PDF) 12 Page - Wolfson Microelectronics plc

Part # WM8946ECS/R
Description  Stereo Low-Power CODEC with Video Buffer
PDF  175 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8946ECS/R Datasheet(HTML) 12 Page - Wolfson Microelectronics plc

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WM8946
Production Data
w
PD, July 2012, Rev 4.3
12
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Digital Inputs/Outputs
Input high level
0.7
DBVDD
V
Input low level
0.3
DBVDD
V
Output high level
IOL = 1mA
0.8
DBVDD
V
Output low level
IOH = -1mA
0.2
DBVDD
V
Input capacitance
10
pF
Input leakage
All digital pins except CIFMODE
-900
900
nA
CIFMODE pin
-90
90
nA
LDO Regulator
Input voltage
LDOVDD
2.4
3.3
3.6
V
Output voltage
LDOVOUT
LDO_REF_SEL = 0
3.0
V
Maximum output current
(see note)
50
mA
Output voltage accuracy
ILOAD = 50mA
2
%
Quiescent current
No Load
55
A
Leakage current
1
A
PSRR (with respect to
LDOVDD)
217Hz
1kHz
40
49
dB
Video Buffer
Maximum output voltage
swing
Vom
f=100kHz, THD=1%
1.10
1.25
1.50
V pk-pk
Voltage gain
Av
VB_GAIN = 1, RREF=187,
RLOAD=75, RSOURCE=75
5.08
6
7.94
dB
VB_GAIN = 0, RREF=187,
RLOAD=75, RSOURCE=75
-0.92
0
1.94
dB
Gain step size
6
dB
Differential gain
DG
Vin = 1V pk-pk
-2.0
0.3
+2.0
%
Differential phase
DP
Vin = 1V pk-pk
-2.0%
0.7
+2.0
Deg
SNR
VSNR
40
60
100
dB
SYNC tip offset above
GND
VB_PD = 0
VB_GAIN = 1
0
40
75
mV
Third order Low Pass
Filter response
(referenced to 100kHz)
RREF=187, RLOAD=75,
RSOURCE=75, 0dB gain
2.4MHz
-0.5
0
0.5
dB
5.13MHz
-0.5
-0.2
0.5
dB
9.04MHz
-3.0
-1.6
0
dB
13.32MHz
-11.0
-7.0
-3.0
dB
PSRR (with respect to
LDOVOUT)
100kHz
60
dB
Clocking
MCLK frequency
30Hz
27MHz
Hz
FLL output frequency
2.045
50
MHz
FLL lock time
2
ms
MICBIAS
Bias voltage (changes in
proportion to LDOVOUT)
MICBIAS
MICB_LVL = 0
2.7
V
MICB_LVL = 1
1.95
V
Bias Current source
3
mA
Output noise spectral
density
1kHz to 20kHz
15
nV/
Hz
PSRR (with respect to
LDOVDD)
217Hz
1kHz
70
85
dB



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