TAS5705PAPR datasheet(20/71 Pages) TI

20 / 71 page

TYPICAL CHARACTERISTICS, SE CONFIGURATION

f − Frequency − Hz

VCC = 12 V

RL = 4 Ω (SE)

Gain = 3 dB

100

10k

0.001

20k

0.1

G011

0.01

PO = 2.5 W

PO = 1 W

PO = 0.5 W

f − Frequency − Hz

VCC = 18 V

RL = 4 Ω (SE)

Gain = 3 dB

100

10k

0.001

20k

0.1

G012

0.01

PO = 2.5 W

PO = 5 W

PO = 0.5 W

VCC − Supply Voltage − V

G014

THD+N = 1%

THD+N = 10%

f = 1 kHz

RL = 4 Ω (SE)

Gain = 3 dB

PO − Output Power − W

0.01

f = 1 kHz

RL = 4 Ω (SE)

Gain = 3 dB

0.1

0.001

0.01

0.1

G013

VCC = 12 V

VCC = 18 V

DETAILED DESCRIPTION

POWER SUPPLY

TAS5705

SLOS549 – JUNE 2008 ...................................................................................................................................................................................................... www.ti.com

TOTAL HARMONIC DISTORTION + NOISE

FREQUENCY

Figure 23.

Figure 24.

TOTAL HARMONIC DISTORTION + NOISE

OUTPUT POWER

SUPPLY VOLTAGE

Figure 25.

Figure 26.

To facilitate system design, the TAS5705 needs only a 3.3-V digital supply in addition to the (typical) 18-V

power-stage supply. An internal voltage regulator provides suitable voltage levels for the gate drive circuitry.

Additionally, all circuitry requiring a floating voltage supply, e.g., the high-side gate drive, is accommodated by

built-in bootstrap circuitry requiring only a few external capacitors.

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