TLC274X2 Datasheet, PDF (7/17 Pages) Texas Instruments – LinCMOSE PRECISION OCTAL OPERATIONAL AMPLIFIER

TLC274x2
LinCMOS™ PRECISION
OCTAL OPERATIONAL AMPLIFIER
SLOS137 – JULY 1994
PARAMETER MEASUREMENT INFORMATION
single-supply versus split-supply test circuits
Because the TLC274x2 is 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
VO
VI
CL
RL
VI
CL
RL
1/2 VDD
(a) SINGLE SUPPLY
VDD _–
(b) SPLIT SUPPLY
Figure 1. Unity-Gain Amplifier
2 kΩ
2 kΩ
20 Ω
VDD
20 Ω
VO
VDD ₊
VO
20 Ω
20 Ω
(a) SINGLE SUPPLY
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 ₊
(a) SINGLE SUPPLY
VDD _–
(b) SPLIT SUPPLY
Figure 3. Gain-of-100 Inverting Amplifier
VO
CL
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