Datasheet
UCD9081
www.ti.com
SLVS813B –JUNE 2008–REVISED DECEMBER 2010
ABSOLUTE MAXIMUM RATINGS
(1)
VALUE UNIT
Voltage applied from V
CC
to V
SS
–0.3 to 4.1 V
Voltage applied to any pin
(2)
–0.3 to V
CC
+ 0.3 V
ESD Diode current at any device terminal ±2 mA
T
stg
Storage temperature –40 to 85 °C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltages referenced to V
SS
.
RECOMMENDED OPERATING CONDITIONS
MIN NOM MAX UNIT
Supply voltage during operation 3 3.3 3.6
V
CC
V
Supply during configuration changes 3 3.3 3.6
T
A
Operating free-air temperature range –40 85 °C
ELECTRICAL CHARACTERISTICS
These specifications are over recommended ranges of supply voltage and operating free-air temperature, unless otherwise
noted
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
Supply current into V
CC
, excluding external T
A
= 25°C 3 4
I
S
mA
current
I
C
Supply current during configuration V
CC
= 3.6 V 3 7 mA
STANDARD INPUTS (RST, TEST)
V
IL
Low-level input voltage V
CC
= 3 V V
SS
V
SS
+ 0.6 V
V
IH
High-level input voltage V
CC
= 3 V 0.8 V
CC
V
CC
V
SCHMITT TRIGGER INPUTS (SDA, SCL, EN1, EN2, EN3, EN4, EN5, EN6, EN7, EN8/ADDR1, ADDR2, ADDR3, ADDR4)
V
IT+
Positive-going input threshold voltage V
CC
= 3 V 1.5 1.9 V
V
IT–
Negative-going input threshold voltage V
CC
= 3 V 0.9 1.3 V
V
hys
Input voltage hysteresis, (V
IT+
– V
IT–
) V
CC
= 3 V 0.5 1 V
I
lkg
High impedance leakage current ±50 nA
ANALOG INPUTS (MON1, MON2, MON3, MON4, MON5, MON6, MON7, MON8, ROSC)
V
CC
Analog supply voltage V
SS
= 0 V 3 3.6 V
Internal voltage reference selected 0 2.5
V
MON<1..8>
Analog input voltage V
External voltage reference selected
0 V
CC
(V
CC
used as reference)
Only one terminal can be selected at a time
C
I
(1)
Input capacitance 27 pF
(MON1–MON8)
Input MUX ON resistance 0 V ≤ V
MONx
≤ V
CC
, V
CC
= 3V 2000 Ω
R
I
(1)
I
lkg
High-impedance leakage current MON1–MON8 ±50 nA
Internal voltage reference selected,
V
REF+
Positive internal reference voltage 2.35 2.5 2.65 V
V
CC
= 3V
V
R+
= 2.5V
±12.2
(Internal reference)
V
TUE
ADC Total unadjusted error V
CC
= 3V mV
V
R+
= V
CC
±14.7
(External reference)
Temperature coefficient of internal voltage I
(VREF+)
is a constant in the range of
±100 ppm/°C
T
REF+
(1)
reference 0 mA ≤ I
(VREF+)
≤ 1 mA, V
CC
= 3V
(1) Not production tested. Limits verified by design.
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