TDA8932B_3 © NXP B.V. 21 June 2007. All rights reserved.
Product data sheet Rev. 03— 21 June 2007 8 of 48
NXP Semiconductors
TDA8932B
Class-D audio amplifier
(1)
Where:
f
osc
= oscillator frequency (Hz)
Rosc = oscillator resistor (on pin OSCREF) (Ω)
Table 5 summarizes how to configure the TDA8932B in master or slave configuration.
For device synchronization see Section 14.6 “Device synchronization”.
8.4 Protection
The following protection is included in the TDA8932B:
• Thermal Foldback (TF)
• OverTemperature Protection (OTP)
• OverCurrent Protection (OCP)
• Window Protection (WP)
• Supply voltage protection:
– UnderVoltage Protection (UVP)
– OverVoltage Protection (OVP)
– UnBalance Protection (UBP)
• ElectroStatic Discharge (ESD)
The reaction of the device to the different fault conditions differs per protection.
Fig 5. Oscillation frequency as a function of resistor Rosc
Table 5. Master or slave configuration
Configuration Pin
OSCREF OSCIO
Master Rosc > 25 kΩ to V
SSD(HW)
output
Slave Rosc = 0 Ω; shorted to V
SSD(HW)
input
f
osc
12.45 10
9
×
Rosc
----------------------------
=
350
450
550
f
osc
(kHz)
250
Rosc (kΩ)
25 454030 35
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