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WM8255 Datasheet(PDF) 6 Page - Cirrus Logic

Part # WM8255
Description  Single Channel 16-bit CIS/CCD AFE with RGB LED Current Drive
PDF  49 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8255 Datasheet(HTML) 6 Page - Cirrus Logic

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Production Data
WM8255
w
PD, Rev 4.7, August 2013
6
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at
or beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical
Characteristics at the test conditions specified.
ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible
to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage
of this device.
The WM8255 has been classified as MSL1, which has an unlimited floor life at <30
oC / 85% Relative Humidity and therefore will
not be supplied in moisture barrier bags.
CONDITION
MIN
MAX
Analogue supply voltage: AVDD1
GND - 0.3V
GND + 7V
Analogue supply voltage: AVDD2
GND - 0.3V
GND + 4.2V
Digital core supply and I/O voltage: DVDD
GND - 0.3V
GND + 4.2V
Digital ground: DGND
GND - 0.3V
GND + 0.3V
Analogue grounds AGND
GND - 0.3V
GND + 0.3V
Digital inputs, digital outputs and digital I/O pins
GND - 0.3V
DVDD + 0.3V
Analogue input VINP
GND - 0.3V
AVDD + 0.3V
Other pins
GND - 0.3V
AVDD + 0.3V
Operating temperature range: TA
0C
+85C
Notes:
1.
GND denotes the voltage of any ground pin.
2.
AGND and DGND pins are intended to be operated at the same potential. Differential voltages between these pins
will degrade performance.
RECOMMENDED OPERATING CONDITIONS
CONDITION
SYMBOL
MIN
TYP
MAX
UNITS
Operating temperature range
TA
0
85
C
Analogue supply voltage
AVDD1
4.75
5.75
6.0
V
Analogue supply voltage
1
AVDD2
2.97
3.3
3.63
V
Digital Core and I/O supply voltage
DVDD
2.97
3.3
3.63
V
Notes
1.
AVDD2 supply not required if using AVDD1. AVDD2 would require connection to ground via a capacitor in that
situation.
2.
If AVDD2 is being used, both AVDD2 and DVDD should be operated at the same potential.
THERMAL PERFORMANCE
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Performance
Thermal resistance – junction to
case (5x5x0.9mm package)
RθJC
Tambient = 25°C
10.27
°C/W
Thermal resistance – junction to
ambient (5x5x0.9mm package)
RθJA
29.45
°C/W
Thermal resistance – junction to
ambient (4x4x0.85mm package)
RθJA
24.05
°C/W
Notes:
1.
Figures given are for package mounted on 4-layer FR4 according to JESD51-5 and JESD51-7.



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