Datasheet

OPERATING CHARACTERISTICS
TLV2556-EP
www.ti.com ................................................................................................................................................... SLAS598A – NOVEMBER 2008 – REVISED JULY 2009
over recommended operating free-air temperature range, V
REF+
= 5 V,
SCLK frequency = 15 MHz when V
CC
= 5 V, V
REF+
= 2.5 V,
SCLK frequency = 10 MHz when V
CC
= 2.7 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
(1)
MAX UNIT
INL Integral nonlinearity error
(2)
– 1 1 LSB
DNL Differential nonlinearity error – 1 1 LSB
E
O
Offset error
(3) (4)
– 2 2 mV
E
G
Gain error
(3) (4)
– 3 3 mV
E
T
Total unadjusted error
(5)
± 1.5 LSB
Address data input = 1011 2048
Self-test output code
(6)
(see Table 2) Address data input = 1100 0
Address data input = 1101 4095
(1) All typical values are at V
CC
= 5 V, T
A
= 25 ° C.
(2) Linearity error is the maximum deviation from the best straight line through the A/D transfer characteristics.
(3) Analog input voltages greater than the voltage applied to REF+ convert as all ones (111111111111), while input voltages less than the
voltage applied to REF – convert as all zeros (000000000000).
(4) Gain error is the difference between the actual mid-step value and the nominal mid-step value in the transfer diagram at the specified
gain point after the offset error has been adjusted to zero. Offset error is the difference between the actual mid-step value and the
nominal mid-step value at the offset point.
(5) Total unadjusted error comprises linearity, zero-scale, and full-scale errors.
(6) Both the input address and the output codes are expressed in positive logic.
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