TLC252_16 Datasheet, PDF (16/26 Pages) Texas Instruments – LinCMOS DUAL OPERATIONAL AMPLIFIERS

TLC252, TLC252A, TLC252B, TLC252Y, TLC25L2, TLC25L2A, TLC25L2B
TLC25L2Y, TLC25M2, TLC25M2A, TLC25M2B, TLC25M2Y
LinCMOS DUAL OPERATIONAL AMPLIFIERS
SLOS002I – JUNE 1983 – REVISED MARCH 2001
PARAMETER MEASUREMENT INFORMATION
single-supply versus split-supply test circuits
Because the TLC252, TLC25L2, and TLC25M2 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
Figure 1. Unity-Gain Amplifier
VDD _–
(b) SPLIT SUPPLY
1/2 VDD
20 Ω
20 Ω
2 kΩ
VDD
–
+
(a) SINGLE SUPPLY
VO
20 Ω
Figure 2. Noise-Test Circuit
2 kΩ
VDD
–
+
20 Ω
VDD_–
(a) SPLIT SUPPLY
10 kΩ
VDD
100 Ω
VI
–
VO
1/2 VDD
+
CL
100 Ω
VI
10 kΩ
VDD+
–
+
CL
(a) SINGLE SUPPLY
VDD_–
(a) SPLIT SUPPLY
Figure 3. Gain-of-100 Inverting Amplifier
VO
VO
16
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