TDA8932T/N1,112 NXP Semiconductors, TDA8932T/N1,112 Datasheet - Page 7

• Manufacturer Part Number: TDA8932T/N1,112
• Description: IC AMP AUDIO 55W STER D 32SOIC
• Manufacturer: NXP Semiconductors
• Type: Class Dr

Specifications of TDA8932T/N1,112

• Package / Case: 32-SOIC (7.5mm Width)
• Output Type: 1-Channel (Mono) or 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 55W x 1 @ 8 Ohm; 26.5W x 2 @ 4 Ohm
• Voltage - Supply: 10 V ~ 36 V, ±5 V ~ 18 V
• Features: Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection
• Mounting Type: Surface Mount
• Product: Class-D
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935279642112; TDA8932T; TDA8932T

NXP Semiconductors
TDA8932_2
Preliminary data sheet
Fig 3. Start-up sequence
OUT1, OUT2
HVP1, HVP2
POWERUP
ENGAGE
HVPREF
OSCIO
DREF
8.3 Pulse width modulation frequency
audio
PWM
DIAG
V
P
0.43V
0.3V
If the transition between Mute mode and Operating mode is controlled via a time constant,
the start-up will be pop free since the DC output offset voltage is applied gradually to the
output between Mute mode and Operating mode. The bias current setting of the
VI-converters is related to the voltage on pin ENGAGE:
The time constant required to apply the DC output offset voltage gradually between Mute
mode and Operating mode can be generated by applying a decoupling capacitor on pin
ENGAGE. The value of the capacitor on pin ENGAGE should be 470 nF.
The output signal of the amplifier is a PWM signal with a carrier frequency of
approximately 320 kHz. Using a 2nd-order low-pass filter in the application results in an
analog audio signal across the loudspeaker. The PWM switching frequency can be set by
an external resistor R
frequency can be set between 300 kHz and 500 kHz. Using an external resistor of 39 k ,
the carrier frequency is set to an optimized value of 320 kHz (see
•
•
ENGAGE
ENGAGE
Mute mode: the bias current setting of the VI-converters is zero (VI-converters
disabled)
Operating mode: the bias current is at maximum
operating
AUDIO
Rev. 02 — 12 December 2006
osc
connected between pins OSCREF and V
PWM
mute
operating
AUDIO
fault
operating
AUDIO
PWM
Class-D audio amplifier
Figure
SSD(HW)
0.17V
TDA8932
© NXP B.V. 2006. All rights reserved.
001aae788
ENGAGE
4).
. The carrier
sleep
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