TLC3704_14 Datasheet, PDF (12/37 Pages) Texas Instruments – QUAD MICROPOWER LinCMOS. VOLTAGE COMPARATORS

TLC3704, TLC3704M
QUAD MICROPOWER LinCMOS VOLTAGE COMPARATORS
SLCS117C − NOVEMBER 1986 − REVISED NOVEMBER 2009
PARAMETER MEASUREMENT INFORMATION
IC1a
1/4 TLC274CN
Buffer
+
C2
1 µF
−
R1
240 kΩ
R4
47 kΩ
V_DD
R5
1.8 kΩ 1%
−
DUT
+
R6
1 MΩ
R7
1.8 kΩ 1%
C3
0.68 µF
IC1c
1/4 TLC274CN
−
+
Integrator
C1
0.1 µF
IC1b
1/4 TLC274CN
−
+
Triangle
Generator
R3
100 Ω
R2
10 kΩ
C4
0.1 µF
R9
100 Ω 1%
R8
10 kΩ 1%
V_IO
(X100)
Figure 6. Circuit for Input Offset Voltage Measurement
Response time is defined as the interval between the application of an input step function and the instant when
the output reaches 50% of its maximum value. Response time for the low-to-high-level output is measured from
the leading edge of the input pulse, while response time for the high-to-low-level output is measured from the
trailing edge of the input pulse. Response time measurement at low input signal levels can be greatly affected
by the input offset voltage. The offset voltage should be balanced by the adjustment at the inverting input as
shown in Figure 7, so that the circuit is just at the transition point. A low signal, for example 105-mV or 5-mV
overdrive, causes the output to change state.
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