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TDA8932B Datasheet(PDF) 5 Page - NXP Semiconductors |
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TDA8932B Datasheet(HTML) 5 Page - NXP Semiconductors |
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5 / 48 page  TDA8932B_4 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 04 — 18 December 2008 5 of 48 NXP Semiconductors TDA8932B Class-D audio amplifier [1] The exposed die pad has to be connected to VSSD(HW). 8. Functional description 8.1 General The TDA8932B is a mono full-bridge or stereo half-bridge audio power amplifier using class-D technology. The audio input signal is converted into a Pulse Width Modulated (PWM) signal via an analog input stage and PWM modulator. To enable the output power Diffusion Metal Oxide Semiconductor (DMOS) transistors to be driven, this digital PWM signal is applied to a control and handshake block and driver circuits for both the high side and low side. A 2nd-order low-pass filter converts the PWM signal to an analog audio signal across the loudspeakers. The TDA8932B contains two independent half-bridges with full differential input stages. The loudspeakers can be connected in the following configurations: • Mono full-bridge: Bridge Tied Load (BTL) • Stereo half-bridge: Single-Ended (SE) The TDA8932B contains common circuits to both channels such as the oscillator, all reference sources, the mode functionality and a digital timing manager. The following protections are built-in: thermal foldback, temperature, current and voltage protections. HVP2 19 half supply output voltage 2 for charging single-ended capacitor for channel 2 VDDP2 20 positive power supply voltage for channel 2 BOOT2 21 bootstrap high-side driver channel 2 OUT2 22 PWM output channel 2 VSSP2 23 negative power supply voltage for channel 2 STAB2 24 decoupling of internal 11 V regulator for channel 2 drivers STAB1 25 decoupling of internal 11 V regulator for channel 1 drivers VSSP1 26 negative power supply voltage for channel 1 OUT1 27 PWM output channel 1 BOOT1 28 bootstrap high-side driver channel 1 VDDP1 29 positive power supply voltage for channel 1 HVP1 30 half supply output voltage 1 for charging single-ended capacitor for channel 1 OSCIO 31 oscillator input in slave configuration or oscillator output in master configuration VSSD(HW) 32 negative digital supply voltage and handle wafer connection Exposed die pad - HTSSOP32 package only[1] Table 3. Pin description …continued Symbol Pin Description |
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