tdf8590th-n1 NXP Semiconductors, tdf8590th-n1 Datasheet - Page 3

• Manufacturer Part Number: tdf8590th-n1
• Description: Tdf8590th 2 X 80 W Se 4 Ohm Or 1 X 160 W Btl 8 Ohm Class-d Amplifier
• Manufacturer: NXP Semiconductors

NXP Semiconductors
6. Functional description
TDF8590TH_2
Product data sheet
5.2 Pin description
6.1 Introduction
Table 2.
[1]
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.
Symbol
V
SGND2
V
IN2M
IN2P
MODE
OSC
IN1P
IN1M
V
SGND1
V
DIAG
V
BOOT1
OUT1
V
STABI
n.c.
V
OUT2
BOOT2
V
V
SSA2
DDA2
DDA1
SSA1
DDP1
SSP1
SSP2
DDP2
SSD
The heatsink is internally connected to pin V
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
Rev. 02 — 23 April 2007
2
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
80 W SE (4 ) or 1
SSD
.
160 W BTL (8 ) class-D amplifier
[1]
TDF8590TH
© NXP B.V. 2007. All rights reserved.
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