Datasheet

LMP91000
www.ti.com SNAS506H –JANUARY 2011–REVISED MARCH 2013
Electrical Characteristics
(1)
(continued)
Unless otherwise specified, all limits guaranteed for T
A
= 25°C, V
S
=(VDD – AGND), V
S
=3.3V and AGND = DGND =0V,
VREF= 2.5V, Internal Zero= 20% VREF. Boldface limits apply at the temperature extremes.
Parameter Test Conditions Min
(2)
Typ
(3)
Max
(2)
Units
0% VREF
Internal Zero=20% VREF
0% VREF
-550 550
Internal Zero=50% VREF
0% VREF
Internal Zero=67% VREF
±1% VREF -575 575
±2% VREF -610 610
±4% VREF -750 750
±6% VREF -840 840
BIAS polarity
V
OS_RW
WE Voltage Offset referred to RE µV
(7)
±8% VREF -930 930
±10% VREF -1090 1090
±12% VREF -1235 1235
±14% VREF -1430 1430
±16% VREF -1510 1510
±18% VREF -1575 1575
±20% VREF -1650 1650
±22% VREF -1700 1700
±24% VREF -1750 1750
0% VREF
Internal Zero=20% VREF
0% VREF
-4 4
Internal Zero=50% VREF
0% VREF
Internal Zero=67% VREF
±1% VREF -4 4
±2% VREF -4 4
±4% VREF -5 5
WE Voltage Offset Drift referred
±6% VREF -5 5
BIAS polarity
TcV
OS_RW
to RE from -40°C to 85°C µV/°C
(7)
±8% VREF -5 5
(8)
±10% VREF -6 6
±12% VREF -6 6
±14% VREF -7 7
±16% VREF -7 7
±18% VREF -8 8
±20% VREF -8 8
±22% VREF -8 8
±24% VREF -8 8
(7) For negative bias polarity the Internal Zero is set at 67% VREF.
(8) Offset voltage temperature drift is determined by dividing the change in VOS at the temperature extremes by the total temperature
change. Starting from the measured voltage offset at temperature T1 (V
OS_RW
(T1)), the voltage offset at temperature T2 (V
OS_RW
(T2)) is
calculated according the following formula: V
OS_RW
(T2)=V
OS_RW
(T1)+ABS(T2–T1)* TcV
OS_RW
.
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