TLC2810Z, TLC2810Y

LinCMOS

™ PRECISION

DUAL OPERATIONAL AMPLIFIERS

SLOS120A – AUGUST 1993 – REVISED AUGUST 1994

16

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

single-supply versus split-supply test circuits

Because the TLC2810Z 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 and split-supply test circuits is shown below. The use of either circuit gives

the same result.

–

+

–

+

VDD

VI

CL

RL

VO

VDD +

VDD –

VI

VO

CL

RL

(a) SINGLE SUPPLY

(b) SPLIT SUPPLY

Figure 26. Unity-Gain Amplifier

–

+

–

+

1/2 VDD

VDD

20

Ω

20

Ω

2 k

Ω

VDD –

VO

VO

20

Ω

20

Ω

(a) SINGLE SUPPLY

2 k

Ω

VDD +

(b) SPLIT SUPPLY

Figure 27. Noise-Test Circuit

–

+

–

+

10 k

Ω

1/2 VDD

100

Ω

VO

VDD

VI

VI

100

Ω

(a) SINGLE SUPPLY

(b) SPLIT SUPPLY

10 k

Ω

VDD +

VDD –

CL

CL

VO

Figure 28. Gain-of-100 Inverting Amplifier