TLC272CPWR datasheet(16/51 Pages) TI

16 / 51 page

TLC272, TLC272A, TLC272B, TLC272Y, TLC277

LinCMOS

 PRECISION DUAL OPERATIONAL AMPLIFIERS

SLOS091E – OCTOBER 1987 – REVISED FEBRUARY 2002

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

PARAMETER MEASUREMENT INFORMATION

single-supply versus split-supply test circuits

Because the TLC272 and TLC277 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

2 k

Ω

VDD –

Ω

2 k

Ω

1/2 VDD

VDD +

VDD

(b) SPLIT SUPPLY

(a) SINGLE SUPPLY

Figure 2. Noise-Test Circuit

VDD –

VDD +

10 k

Ω

100

Ω

1/2 VDD

100

Ω

10 k

Ω

VDD

(a) SINGLE SUPPLY

(b) SPLIT SUPPLY

Figure 3. Gain-of-100 Inverting Amplifier

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