Datasheet

ADS5281
ADS5282
SBAS397I –DECEMBER 2006–REVISED JUNE 2012 www.ti.com
DIGITAL CHARACTERISTICS
DC specifications refer to the condition where the digital outputs are not switching, but are permanently at a valid logic level
'0' or '1'. At C
LOAD
= 5pF
(1)
, I
OUT
= 3.5mA
(2)
, R
LOAD
= 100Ω
(2)
, and no internal termination, unless otherwise noted.
ADS528x
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DIGITAL INPUTS
High-level input voltage 1.4 V
Low-level input voltage 0.3 V
High-level input current 33 μA
Low-level input current –33 μA
Input capacitance 3 pF
LVDS OUTPUTS
High-level output voltage 1375 mV
Low-level output voltage 1025 mV
Output differential voltage, |V
OD
| 350 mV
V
OS
output offset voltage Common-mode voltage of OUT
P
and OUT
N
1200 mV
Output capacitance inside the device, from either
Output capacitance 2 pF
output to ground
(1) C
LOAD
is the effective external single-ended load capacitance between each output pin and ground.
(2) I
OUT
refers to the LVDS buffer current setting; R
LOAD
is the differential load resistance between the LVDS output pair.
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