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STLC1512

<4>A multi-tone sine wave is used for the DS (Down Stream) Multi-tone test. (The multi-tone signal will be 91 sine waves equally

spaced from 35x4.3125kHz to 125x4.3125kHz with a peak-to-rms ratio of 5.3, an rms voltage equal to 207mV and a tone amplitude

of 30.7mV.) The multi-tone test measures the difference between the rms voltage of a single tone at the output to the rms voltage

of the maximum distortion product at the output in the band of interest.

<5>The undedicated op amp specs are available in two configurations since it is undetermined which way the opamp will be used in

the application. The distortion specs for the 2 configurations are very different.

Figure 5. Circuit Connection for Measuring Distortion

Figure 6. Power Supply Rejection of the Amplifier

1

<1>This curve is a nominal simulation. 6 dB of margin should be added for worst case.

R

R

Negative Unity Gain

Positive Unity Gain

+

-

+

-

Vin

Vin

VDB (AM POUTX)

10

0

-20

-40

-60

-80

1e+02

1e+08

1e+05

Hz

dB