TLC3702_14 Datasheet, PDF (9/37 Pages) Texas Instruments – DUAL MICROPOWER LinCMOS™ VOLTAGE COMPARATORS

TLC3702
DUAL MICROPOWER LinCMOS™ VOLTAGE COMPARATORS
SLCS013E − NOVEMBER 1986 − REVISED MARCH 2012
PRINCIPLES OF OPERATION
circuit-design considerations (continued)
INPUT CURRENT
vs
POSITIVE INPUT VOLTAGE
8
T_A = 25° C
7
6
5
4
3
2
1
0
V_DD
V_DD + 4
V_DD + 8
V_I − Input Voltage − V
V_DD + 12
Figure 2
V_DD
INPUT CURRENT
vs
NEGATIVE INPUT VOLTAGE
−10
T_A = 25° C
−9
−8
−7
−6
−5
−4
−3
−2
−1
−0
−0.3
−0.5
−0.7
−0.9
V_I − Input Voltage − V
Figure 3
R_I
V_I
+
1/2
TLC3702
V_ref
−
See Note A
Positive Voltage Input Current Limit :
R_I
+
V_I * V_DD * 0.3 V
5 mA
Negative Voltage Input Current Limit :
R_I
+
* V_I * V_DD * (* 0.3 V)
5 mA
NOTE A: If the correct input state is required when the negative input exceeds GND, a Schottky clamp is required.
Figure 4. Typical Input Current-Limiting Configuration for a LinCMOS™ Comparator
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