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Número de pieza | TDA8926 | |
Descripción | Power stage 2 x 50 W class-D audio amplifier | |
Fabricantes | NXP Semiconductors | |
Logotipo | ||
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DATA SHEET
TDA8926
Power stage 2 × 50 W class-D
audio amplifier
Preliminary specification
Supersedes data of 2002 Feb 07
2002 Oct 10
1 page Philips Semiconductors
Power stage 2 × 50 W class-D audio
amplifier
Preliminary specification
TDA8926
7 PINNING
SYMBOL PIN
DESCRIPTION
SW1
1 digital switch input; channel 1
REL1
2 digital control output; channel 1
DIAG
3 digital open-drain output for
overtemperature and overcurrent
report
EN1 4 digital enable input; channel 1
VDD1
BOOT1
5 positive power supply; channel 1
6 bootstrap capacitor; channel 1
OUT1
7 PWM output; channel 1
VSS1
STAB
8 negative power supply; channel 1
9 decoupling internal stabilizer for
logic supply
VSS2
OUT2
10 negative power supply; channel 2
11 PWM output; channel 2
BOOT2
12 bootstrap capacitor; channel 2
VDD2
EN2
13 positive power supply; channel 2
14 digital enable input; channel 2
POWERUP 15 enable input for switching on
internal reference sources
REL2
16 digital control output; channel 2
SW2
17 digital switch input; channel 2
handbook, halfpage
SW1 1
REL1 2
DIAG 3
EN1 4
VDD1 5
BOOT1 6
OUT1 7
VSS1 8
STAB 9
VSS2 10
OUT2 11
BOOT2 12
VDD2 13
EN2 14
TDA8926J
POWERUP 15
REL2 16
SW2 17
MGW141
Fig.2 Pin configuration.
2002 Oct 10
5
5 Page Philips Semiconductors
Power stage 2 × 50 W class-D audio
amplifier
Preliminary specification
TDA8926
13 AC CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Single-ended application; note 1
Po output power
THD
total harmonic distortion
Gv(cl)
η
closed-loop voltage gain
efficiency
Mono BTL application; note 5
Po output power
THD
total harmonic distortion
Gv(cl)
η
closed loop voltage gain
efficiency
RL = 8 Ω; VP = ±25 V
THD = 0.5%
THD = 10%
RL = 8 Ω; VP = ±30 V
THD = 0.5%
THD = 10%
RL = 4 Ω; VP = ±21 V
THD = 0.5%
THD = 10%
Po = 1 W; note 3
fi = 1 kHz
fi = 10 kHz
Po = 30 W; fi = 1 kHz; note 4
RL = 8 Ω; THD = 0.5%
RL = 8 Ω; THD = 10%
Po = 1 W; note 3
fi = 1 kHz
fi = 10 kHz
Po = 30 W; fi = 1 kHz; note 4
25(2)
30(2)
30
37
−
−
W
W
− 40 − W
− 52 − W
30(2)
40(2)
40
50
−
−
W
W
− 0.01 0.05 %
− 0.1 − %
29 30 31 dB
− 94 − %
70(2)
80(2)
80
100
−
−
W
W
− 0.01 0.05 %
− 0.1 − %
35 36 37 dB
− 94 − %
Notes
1. VP = ±25 V; RL = 8 Ω; fi = 1 kHz; fosc = 310 kHz; Rs = 0.1 Ω (series resistance of filter coil); Tamb = 25 °C; measured
in reference design (SE application) shown in Fig.7; unless otherwise specified.
2. Indirectly measured; based on Rds(on) measurement.
3. Total Harmonic Distortion (THD) is measured in a bandwidth of 22 Hz to 22 kHz. When distortion is measured using
a low-order low-pass filter a significantly higher value will be found, due to the switching frequency outside the audio
band.
4. Efficiency for power stage; output power measured across the loudspeaker load.
5. VP = ±21 V; RL = 8 Ω; fi = 1 kHz; fosc = 310 kHz; Rs = 0.1 Ω (series resistance of filter coil); Tamb = 25 °C; measured
in reference design (BTL application) shown in Fig.7; unless otherwise specified.
2002 Oct 10
11
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet TDA8926.PDF ] |
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