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TDF8591TH 데이터시트(PDF) 3 Page - NXP Semiconductors |
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TDF8591TH 데이터시트(HTML) 3 Page - NXP Semiconductors |
3 / 34 page TDF8591TH_1 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 01 — 5 March 2008 3 of 34 NXP Semiconductors TDF8591TH 2 × 100 W SE (4 Ω) or 1 × 310 W BTL (4 Ω) class-D amplifier 5.2 Pin description [1] The heatsink is internally connected to VSSD. 6. Functional description 6.1 Introduction The TDF8591TH is a dual channel 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 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. An external 2nd-order low-pass filter converts the PWM output signal to an analog audio signal across the loudspeakers. Table 2. Pin description Symbol Pin Description VSSA2 1 negative analog supply voltage for channel 2 SGND2 2 signal ground for channel 2 VDDA2 3 positive analog supply voltage for channel 2 IN2M 4 negative audio input for channel 2 IN2P 5 positive audio input for channel 2 MODE 6 mode selection input: standby, mute or operating OSC 7 oscillator frequency adjustment or tracking input IN1P 8 positive audio input for channel 1 IN1M 9 negative audio input for channel 1 VDDA1 10 positive analog supply voltage for channel 1 SGND1 11 signal ground for channel 1 VSSA1 12 negative analog supply voltage for channel 1 DIAG 13 diagnostic for activated current protection VDDP1 14 positive power supply voltage for channel 1 BOOT1 15 bootstrap capacitor for channel 1 OUT1 16 PWM output from channel 1 VSSP1 17 negative power supply voltage for channel 1 STABI 18 decoupling of internal stabilizer for logic supply n.c. 19 not connected VSSP2 20 negative power supply voltage for channel 2 OUT2 21 PWM output from channel 2 BOOT2 22 bootstrap capacitor for channel 2 VDDP2 23 positive power supply voltage for channel 2 VSSD 24 negative digital supply voltage[1] |
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