TDA8920CJ datasheet(6/39 Pages) NXP

부품명	TDA8920CJ

상세설명	2 쨈 110 W class-D power amplifier

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6 / 39 page

TDA8920C_2

Product data sheet

Rev. 02 — 11 June 2009

6 of 39

NXP Semiconductors

TDA8920C

2

× 110 W class-D power ampliﬁer

The TDA8920C single-chip class-D ampliﬁer contains high-power switches, drivers, timing

and handshaking between the power switches, along with some control logic. To ensure

maximum system robustness, an advanced protection strategy has been implemented to

provide overvoltage, overtemperature and overcurrent protection.

Each of the two audio channels contains a PWM modulator, an analog feedback loop and

a differential input stage. The TDA8920C also contains circuits common to both channels

such as the oscillator, all reference sources, the mode interface and a digital timing

manager.

The two independent ampliﬁer channels feature high output power, high efﬁciency, low

distortion and low quiescent currents, and can be connected in the following

conﬁgurations:

• Stereo Single-Ended (SE)

• Mono Bridge-Tied Load (BTL)

The ampliﬁer system can be switched to one of three operating modes using pin MODE:

• Standby mode: featuring very low quiescent current

• Mute mode: the ampliﬁer is operational but the audio signal at the output is

suppressed by disabling the voltage-to-current (VI) converter input stages

• Operating mode: the ampliﬁer is fully operational, de-muted and can deliver an output

signal

A slowly rising voltage should be applied (e.g. via an RC network) to pin MODE to ensure

pop noise-free start-up. The bias-current setting of the (VI converter) input stages is

related to the voltage on the MODE pin.

In Mute mode, the bias-current setting of the VI converters is zero (VI converters are

disabled). In Operating mode, the bias current is at a maximum. The time constant

required to apply the DC output offset voltage gradually between Mute and Operating

mode levels can be generated using an RC network connected to pin MODE. An example

of a switching circuit for driving pin MODE is illustrated in Figure 4. If the capacitor was

omitted, the very short switching time constant could result in audible pop noises being

generated at start-up (depending on the DC output offset voltage and loudspeaker used).

Fig 4.

Example of mode selection circuit

010aaa552

SGND

mode control

mute/

operating

10

µF

5.6 k

Ω

+5 V

470

Ω

standby/

operating

S2

S1

5.6 k

Ω

유사한 부품 번호 - TDA8920CJ

제조업체	부품명	데이터시트	상세설명
NXP Semiconductors	TDA8920CJ	275Kb / 40P	2 X110 W class-D power amplifier Rev. 01-29 September 2008

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유사한 설명 - TDA8920CJ

제조업체	부품명	데이터시트	상세설명
NXP Semiconductors	TDA8950J-N1112	242Kb / 39P	2 쨈 150 W class-D power amplifier Rev. 02-11 June 2009
	TDA8920C	242Kb / 39P	2 X 110 W class-D power amplifier Rev. 02-11 June 2009
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	TDA8920C	275Kb / 40P	2 X110 W class-D power amplifier Rev. 01-29 September 2008
Texas Instruments	TPA005D12	119Kb / 8P	[Old version datasheet] 2-W STEREO CLASS-D AUDIO POWER AMPLIFIER
NXP Semiconductors	TDA8922C	239Kb / 40P	2 X 75 W class-D power amplifier Rev. 01-7 September 2009
	TDA8950	271Kb / 39P	2 X 150 W class-D power amplifier Rev. 01-9 September 2008
	TDA8922B	201Kb / 32P	2 X 50 W class-D power amplifier Rev. 01-1 October 2004
Texas Instruments	TPA005D02	381Kb / 25P	[Old version datasheet] 2-W STEREO CLASS-D AUDIO POWER AMPLIFIER
Texas Instruments	TPA005D14	420Kb / 29P	[Old version datasheet] 2-W STEREO CLASS-D AUDIO POWER AMPLIFIER

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