Datasheet

TLC271, TLC271A, TLC271B
LinCMOS PROGRAMMABLE LOW-POWER
OPERATIONAL AMPLIFIERS
SLOS090D – NOVEMBER 1987 – REVISED MARCH 2001
54
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
single-supply versus split-supply test circuits
Because the TLC271 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.
+
V
DD
C
L
R
L
V
O
V
I
V
I
V
O
R
L
C
L
–
+
V
DD+
V
DD–
(a) SINGLE SUPPLY (b) SPLIT SUPPLY
–
Figure 98. Unity-Gain Amplifier
V
DD
–
+
V
DD+
–
+
1/2 V
DD
20 Ω
V
O
2 kΩ
20 Ω
V
DD–
20 Ω 20 Ω
2 kΩ
V
O
(a) SINGLE SUPPLY (b) SPLIT SUPPLY
Figure 99. Noise-Test Circuit
100 Ω
V
DD
–
+
10 kΩ
V
O
C
L
1/2 V
DD
V
I
V
I
C
L
100 Ω
V
O
10 kΩ
–
+
V
DD+
V
DD–
(a) SINGLE SUPPLY (b) SPLIT SUPPLY
Figure 100. Gain-of-100 Inverting Amplifier