TDF8590TH 데이터 시트보기 (PDF) - NXP Semiconductors.
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TDF8590TH Datasheet PDF : 30 Pages
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NXP Semiconductors
TDF8590TH
2 × 80 W SE (4 Ω) or 1 × 160 W BTL (8 Ω) class-D amplifier
5.2 Pin description
Table 2.
Symbol
VSSA2
SGND2
VDDA2
IN2M
IN2P
MODE
OSC
IN1P
IN1M
VDDA1
SGND1
VSSA1
DIAG
VDDP1
BOOT1
OUT1
VSSP1
STABI
n.c.
VSSP2
OUT2
BOOT2
VDDP2
VSSD
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Description
negative analog supply voltage for channel 2
signal ground for channel 2
positive analog supply voltage for channel 2
negative audio input for channel 2
positive audio input for channel 2
mode selection input: standby, mute or operating
oscillator frequency adjustment or tracking input
positive audio input for channel 1
negative audio input for channel 1
positive analog supply voltage for channel 1
signal ground for channel 1
negative analog supply voltage for channel 1
diagnostic for activated current protection
positive power supply voltage for channel 1
bootstrap capacitor for channel 1
PWM output from channel 1
negative power supply voltage for channel 1
decoupling of internal stabilizer for logic supply
not connected
negative power supply voltage for channel 2
PWM output from channel 2
bootstrap capacitor for channel 2
positive power supply voltage for channel 2
negative digital supply voltage[1]
[1] The heatsink is internally connected to pin VSSD.
6. Functional description
6.1 Introduction
The TDF8590TH 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.
TDF8590TH_2
Product data sheet
Rev. 02 — 23 April 2007
© NXP B.V. 2007. All rights reserved.
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