wm8352 Wolfson Microelectronics plc, wm8352 Datasheet - Page 24
wm8352
Manufacturer Part Number
wm8352
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8352.pdf
(335 pages)
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WM8352
7.9
Test Conditions
T
7.10 AUXILIARY ADC
Test Conditions
T
Input resistance
(AUX1,2,3,4, USB, LINE, BATT
and CHIPTEMP)
Input Voltage range.
AUX1,2,3,4,USB,LINE,BATT and
CHIPTEMP
(V
V
Input capacitance
(AUX1,2,3,4, USB, LINE, BATT
and CHIPTEMP)
VRTC quiescent current
VRTC quiescent current
LINE_INT quiescent current
ADCCLK frequency
ADC Resolution
ADC Conversion Time
Aux ADC accuracy
w
A
A
BG
SDA, SCLK, MCLK, BCLK, LRCLK, ADCDATA, DACDATA, GPIO4 to GPIO9
Input HIGH Level
Input LOW Level
Output HIGH Level
Output LOW Level
RTC
= +25ºC unless otherwise noted.
= +25ºC unless otherwise noted.
=1.25V)
= 2.7V & V
DIGITAL INTERFACES
PARAMETER
PARAMETER
LINE
(max)= 5.5V,
AUXADC_SCALEn [1:0] = 00
AUXADC_SCALEn [1:0] = 01
AUXADC_SCALEn [1:0]= 10
AUXADC_SCALEn [1:0] = 11
AUXADC_SCALEn [1:0] = 01
AUXADC_REF = 0
AUXADC_SCALEn [1:0] = 01
AUXADC_REF = 1
AUXADC_SCALEn [1:0] = 10
AUXADC_REF = 0
AUXADC_SCALEn [1:0] = 10
AUXADC_REF = 1
AUXADC_SCALEn [1:0] = 11
AUXADC_REF = 0
AUXADC_SCALEn [1:0] = 11
AUXADC_REF = 1
Input is selected
(INPUT_SELECT) and
AUXADC_SCALEn [1:0] not = 00
AUX_RBMODE = 0,
AUXADC_ENA = 1
AUX_RBMODE = 1
AUXADC_ENA = 1
Non-calibrated (calibration
possible using the VBG input on
AUX3). 1% of this variation due
to BG variation over temperature.
SYMBOL
V
V
V
V
OH
OL
IH
IL
CONDITIONS
TEST CONDITIONS
sourcing 1mA
sinking 1mA
0.7×DBVDD
0.9×DBVDD
SYMBOL
f
AUXCLK
MIN
MIN
330
330
400
∞
TYP
470/512
TYP
2.08
140
151
2.2
2.2
12
13
∞
PD, June 2009, Rev 4.1
0.3×DBVDD
0.1xDBVDD
MAX
2 x V
2 x V
4 x V
MAX
V
V
<<1
Production Data
660
440
V
800
LINE
∞
RTC
BG
RTC
BG
BG
periods
UNITS
UNIT
CLK
kHz
mA
bits
kΩ
kΩ
kΩ
μA
μA
V
V
V
V
pF
24
%
Ω
V
V
V
V
V
V
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