TLC27M2ACD datasheet(14/50 Pages) TI1

14 / 50 page

TLC27M2, TLC27M2A, TLC27M2B, TLC27M7

LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS

SLOS051E − OCTOBER 1987 − REVISED AUGUST 2008

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

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 +

VDD −

(a) SINGLE SUPPLY

(b) SPLIT SUPPLY

Figure 1. Unity-Gain Amplifier

1/2 VDD

VDD

VDD +

Ω

2 k

Ω

VDD −

Ω

2 k

Ω

(b) SPLIT SUPPLY

(a) SINGLE SUPPLY

Figure 2. Noise-Test Circuit

VDD

10 k

Ω

100

Ω

1/2 VDD

100

Ω

10 k

Ω

VDD +

VDD −

(a) SINGLE SUPPLY

(b) SPLIT SUPPLY

Figure 3. Gain-of-100 Inverting Amplifier

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