Datasheet

ADC128D818
www.ti.com SNAS483E –FEBRUARY 2010–REVISED MARCH 2013
DC Electrical Characteristics (continued)
The following specifications apply for +3.0 V
DC
≤ V
+
≤ +5.5 V
DC
, External VREF = +2.56V, unless otherwise specified.
Boldface limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= 25°C
(1)
.
Symbol Parameter Conditions Min
(2)
Typical
(3)
Max
(2)
Units
Internal VREF, V+ = 3.0V to 3.6V.
–0.25 0.45 % of FS
Internal VREF, V+ = 4.5V to 5.5V
(7)
External VREF = 1.25V or 2.56V, V+ =
GE Gain Error
3.0V to 3.6V.
–0.45 0.2 % of FS
External VREF = 2.56V or 5.0V, V+ =
4.5V to 5.5V.
Internal VREF, Pseudo-Differential,V+ =
–0.15 0.2 % of FS
4.5V to 5.5V
(7)
.
External VREF = 1.25V or 2.56V,
Single-Ended, V+ = 3.0V to 3.6V.
–0.5 0.1 % of FS
External VREF = 2.56V or 5.0V, Single-
OE Offset Error
Ended, V+ = 4.5V to 5.5V
External VREF = 1.25V or 2.56V,
Pseudo-Differential, V+ = 3.0V to 3.6V.
–0.2 0.15 % of FS
External VREF = 2.56V or 5.0V,
Pseudo-Differential, V+ = 4.5V to 5.5V
Each Enabled Voltage Channel 12 ms
Continuous Conversion Mode
Internal Temperature Sensor 3.6 ms
t
C
Enabled Voltage Channel(s) and
Low Power Conversion Mode 728 ms
Internal Temperature Sensor
MULTIPLEXER / ADC INPUT CHARACTERISTICS
R
ON
On Resistance 2 10 kΩ
Input Current (On Channel Leakage
I
ON
±0.005 μA
Current)
I
OFF
Off Channel Leakage Current ±0.005 μA
DIGITAL OUTPUTS: INT
I
OUT
= +5.0 mA at V
+
= +4.5V, I
OUT
=
V
OUT(0)
Logical “0” Output Voltage 0.4 V
+3.0 mA at V
+
= +3.0V
OPEN DRAIN SERIAL BUS OUTPUT: SDA
V
OUT(0)
Logical “0” Output Voltage I
OUT
= +3.0 mA at V
+
= +4.5V, 0.4 V
I
OH
High Level Output Current V
OUT
= V
+
0.005 1 μA
DIGITAL INPUTS: A0 and A1
V
IN(1)
Logical “1” Input Voltage 0.90 x V+ 5.5 V
V
IM
Logical Middle Input Voltage 0.43 x V+ 0.57 x V+
V
IN(0)
Logical “0” Input Voltage GND - 0.10 x V+ V
0.05
SERIAL BUS INPUTS: SCL and SDA
V
IN(1)
Logical “1” Input Voltage 0.7 × V
+
5.5 v
GND -
V
IN(0)
Logical “0” Input Voltage 0.3 × V
+
V
0.05
V
+
= +3.3V 0.67 V
V
HYST
Hysteresis Voltage
V
+
= +5.5V 1.45 V
ALL DIGITAL INPUTS: SCL, SDA, A0, A1
I
IN(1)
Logical “1” Input Current V
IN
= V
+
−1 – 0.005 µA
I
IN(0)
Logical “0” Input Current V
IN
= 0 V
DC
0.005 1 µA
C
IN
Digital Input Capacitance 20 pF
Copyright © 2010–2013, Texas Instruments Incorporated Submit Documentation Feedback 7
Product Folder Links: ADC128D818