1 F

1 F

30-kHz

Low-Pass

Filter

Supply

2.2 H

22 F

IN+

IN–

SW

VBAT

GND

OUT+

OUT–

PVDD

10 F

Load

Measurement

Input

Measurement

Output

+

–

+

–

TPA2080D1

+

–

EN

10 k

TPA2080D1

SLOS733

– JANUARY 2012

www.ti.com

TEST SET-UP FOR GRAPHS

(1)

The 1

µF input capacitors on IN+ and IN- were shorted for input common-mode voltage measurements.

(2)

A 33

µH inductor was placed in series with the load resistor to emulate a small speaker for efficiency measurements.

(3)

The 30 kHz low-pass filter is required even if the analyzer has an internal low-pass filter. An R-C low-pass filter

(100

Ω, 47 nF) is used on each output for the data sheet graphs.

6

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© 2012, Texas Instruments Incorporated

Product Folder Link(s): TPA2080D1