TLC27M2ACDRG4 Datasheet, PDF (14/50 Pages) Texas Instruments – LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS

TLC27M2, TLC27M2A, TLC27M2B, TLC27M7
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS051E − OCTOBER 1987 − REVISED AUGUST 2008
PARAMETER MEASUREMENT INFORMATION
single-supply versus split-supply test circuits
Because the TLC27M2 and TLC27M7 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
VDD +
VO
VI
CL
RL
VO
VI
CL
RL
1/2 VDD
(a) SINGLE SUPPLY
Figure 1. Unity-Gain Amplifier
2 kΩ
20 Ω
VDD
20 Ω
VO
VDD −
(b) SPLIT SUPPLY
2 kΩ
VDD +
VO
20 Ω
(a) SINGLE SUPPLY
Figure 2. Noise-Test Circuit
20 Ω
VDD −
(b) SPLIT SUPPLY
100 Ω
VI
1/2 VDD
10 kΩ
VDD
VO
CL
100 Ω
VI
10 kΩ
VDD +
VO
CL
(a) SINGLE SUPPLY
VDD −
(b) SPLIT SUPPLY
Figure 3. Gain-of-100 Inverting Amplifier
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