Preliminary Datasheet

LPA2173

LPA2173–03

Version 1.3 Oct.-2014

www.lowpowersemi.com

Page 5 of 9

Audio Precision

A-A THD+N vs FREQUENCY

A-A THD+N VS FREQ @4ohm PO=3W CLASS D VDD=6V.ats2

Color

Sweep

Trace

Line Style

Thick

Data

Axis

Comment

1

1

Cyan

Solid

1

Analyzer.THD+N Ratio B

Left

1

2

Blue

Solid

7

Analyzer.THD+N Ratio B

Right

A single sweeps produces a stereo THD+N sweep of Ch A and Ch B when data 1 is set for

THD+N and the Stereo box is checked. The upper Analyzer bandwidth is 20kHz. At a 6kHz

fundamental only the 2nd and 3rd harmonics are included, above 10kHz only the noise is

included in the measurement bandwidth. For band-limited systems IMD testing is better.

0.0001

10

0.001

0.01

0.1

1

%

0.0001

10

0.001

0.01

0.1

1

%

2k

20k

4k

6k

8k

10k

12k

14k

16k

18k

Hz