TLC27L2CPE4 Datasheet, PDF (13/49 Pages) Texas Instruments – LinCMOS PRECISION DUAL OPERATIONAL AMP LIFIERS

TLC27L2, TLC27L2A, TLC27L2B, TLC27L7
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS052D − OCTOBER 1987 − REVISED OCTOBER 2005
PARAMETER MEASUREMENT INFORMATION
single-supply versus split-supply test circuits
Because the TLC27L2 and TLC27L7 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 in Figure 1. The use
of either circuit gives the same result.
VDD
VDD ₊
VO
VO
VI
CL
RL
VI
CL
RL
VDD _−
(a) SINGLE SUPPLY
(b) SPLIT SUPPLY
Figure 1. Unity-Gain Amplifier
2 kΩ
2 kΩ
20 Ω
VDD
1/2 VDD
VO
VDD ₊
VO
20 Ω
(a) SINGLE SUPPLY
20 Ω
20 Ω
VDD _−
(b) SPLIT SUPPLY
Figure 2. Noise-Test Circuit
100 Ω
VI
1/2 VDD
10 kΩ
VDD
VO
CL
100 Ω
VI
10 kΩ
VDD ₊
VDD _−
(a) SINGLE SUPPLY
(b) SPLIT SUPPLY
Figure 3. Gain-of-100 Inverting Amplifier
VO
CL
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