TLC272BCDR Datasheet, PDF (16/51 Pages) Texas Instruments – LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS

TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091E – OCTOBER 1987 – REVISED FEBRUARY 2002
PARAMETER MEASUREMENT INFORMATION
single-supply versus split-supply test circuits
Because the TLC272 and TLC277 are optimized for single-supply operation, circuit configurations used for the
various tests often present some inconvenience since the input signal, in many cases, must be offset from
ground. This inconvenience can be avoided by testing the device with split supplies and the output load tied to
the negative rail. A comparison of single-supply versus split-supply test circuits is shown below. The use of either
circuit gives the same result.
VDD
VI
CL
VO
RL
VDD ₊
VI
CL
VO
RL
(a) SINGLE SUPPLY
VDD _–
(b) SPLIT SUPPLY
Figure 1. Unity-Gain Amplifier
2 kΩ
2 kΩ
20 Ω
VDD
VDD ₊
1/2 VDD
VO
20 Ω
20 Ω
20 Ω
(a) SINGLE SUPPLY
VDD _–
(b) SPLIT SUPPLY
100 Ω
VI
1/2 VDD
10 kΩ
VDD
Figure 2. Noise-Test Circuit
VO
CL
100 Ω
VI
10 kΩ
VDD ₊
VO
VO
CL
(a) SINGLE SUPPLY
VDD _–
(b) SPLIT SUPPLY
Figure 3. Gain-of-100 Inverting Amplifier
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