TDA8932B_15 Datasheet, PDF (8/48 Pages) NXP Semiconductors – Class-D audio amplifier

NXP Semiconductors
TDA8932B
Class-D audio amplifier
f _osc = ¹----²---^.-^4R---⁵-_o----^×_s--_c--¹---⁰----⁹
(1)
Where:
f_osc = oscillator frequency (Hz)
Rosc = oscillator resistor (on pin OSCREF) (Ω)
550
f_osc
(kHz)
450
001aad758
350
250
25
30
35
40
45
Rosc (kΩ)
Fig 5. Oscillation frequency as a function of resistor Rosc
Table 5 summarizes how to configure the TDA8932B in master or slave configuration.
For device synchronization see Section 14.6 “Device synchronization”.
Table 5. Master or slave configuration
Configuration Pin
OSCREF
Master
Slave
Rosc > 25 kΩ to V_SSD(HW)
Rosc = 0 Ω; shorted to V_SSD(HW)
OSCIO
output
input
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.
TDA8932B_4
Product data sheet
Rev. 04 — 18 December 2008
© NXP B.V. 2008. All rights reserved.
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