BCM20730 Data Sheet
Electrical Characteristics
Table 12: ADC Specifications
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
ADC Characteristics
Number of Input
channels
–
–
–
28
–
–
Channel switching rate f
–
–
–
0
–
–
133.33
3.63
kch/s
V
ch
Input signal range
V
inp
Reference settling time –
Changing refsel
7.5
–
–
μs
Input resistance
Input capacitance
Conversion rate
Conversion time
Resolution
R
C
Effective, single-ended
–
–
500
–
–
5
kΩ
pF
inp
–
–
–
–
–
inp
f
5.859
5.35
–
–
–
16
187
170.7
–
kHz
μs
bits
C
T
C
R
–
Effective number of
bits
–
See
Table 1 on
page 18
–
Absolute voltage
measurement error
–
Using on-chip ADC firmware
driver
–
±2
–
%
Current
I
I
+ I
–
–
1
mA
mW
nA
avdd1p2
avdd3p3
Power
Leakage current
Power-up time
P
I
T
–
–
–
–
1.5
–
–
–
T = 25°C
100
200
1
leakage
–
–
–
μs
LSB
powerup
3
a
Integral nonlinearity INL
Differential
nonlinearity
–1
–1
–
–
a
DNL
1
LSB
a
a. LSBs are expressed at the 10-bit level.
a
Table 13: Digital Level
Characteristics
Symbol
Min
Typ
Max
Unit
Input low voltage
VIL
–
–
0.4
–
0.4
–
V
V
V
Input high voltage
Input low voltage (VDDO = 1.62V)
Input high voltage (VDDO = 1.62V)
VIH
VIL
0.75 × VDDO –
–
1.2
–
–
–
–
VIH
VOL
VOH
CIN
V
b
Output low voltage
Output high voltage
0.4
–
V
V
b
VDDO – 0.4 –
Input capacitance (VDDMEM domain)
–
0.12
–
pF
a. This table is also applicable to VDDMEM domain.
b. At the specified drive current for the pad.
BROADCOM
®
September 9, 2013 • 20730-DS108-R
Page 44
BROADCOM CONFIDENTIAL
CYPRESS [ CYPRESS ]
