Datasheet

TLV2556
SLAS355A – DECEMBER 2001 – REVISED SEPTEMBER 2002
7
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operating characteristics 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
†
MAX UNIT
INL Integral nonlinearity error (see Note 3) –1 1 LSB
DNL Differential nonlinearity error –1 1 LSB
E
O
Offset error (see Note 4) See Note 2 –2 2 mV
E
G
Gain error (see Note 4) See Note 2 –3 3 mV
E
T
Total unadjusted error (see Note 5) ±1.5 LSB
Address data input = 1011 2048
Self-test output code (see Table 2 and Note 6)
Address data input = 1100
0
Self test
out ut
code
(see
Table
2
and
Note
6)
Address data input = 1101 4095
†
All typical values are at T
A
= 25°C.
NOTES: 2. 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).
3. Linearity error is the maximum deviation from the best straight line through the A/D transfer characteristics.
4. Gain error is the difference between the actual midstep value and the nominal midstep 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 midstep value and the
nominal midstep 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.