DEEM
5
de-emphasis output for capacitor
AFD
6
AF decoupling input for capacitor
DGND
7
digital ground
AUD
8
audio output
TOP
9
tuner AGC TakeOver Point (TOP)
SDA
10
I
2
C bus data input/output
SCL
11
I
2
C bus clock input
SIOMA
12
sound intercarrier output and MAD select
n.c.
13
not connected
TAGC
14
tuner AGC output
REF
15
4MHz crystal or reference input
VAGC
16
VIF-AGC for capacitor; note 1
CVBS
17
video output
AGND
18
analog ground
VPLL
19
VIF-PLL for loop filter
VP
20
supply voltage (+5 V)
AFC
21
AFC output
OP2
22
output 2 (open-collector)
SIF1
23
SIF differential input 1
SIF2
24
SIF differential input 2
11.29. TPA3002D2 / TPA3004D2
11.29.1. General Description
The TPA3002D2/TPA3004D2 is a 9W/12W (per channel) efficient, Class-D audio amplifier for
driving bridged-tied stereo speakers. These devices can drive stereo speakers as low as 8 Ohm
for (TPA3002D2) / 4 Ohm for (TPA3004D2).
The high efficiency of these devices eliminates the need for external heatsinks when playing
music.
Stereo speaker volume is controlled with a dc voltage applied to the volume control terminal,
offering a range of gain from -40 dB to 36 dB. Line outputs, for driving external headphone
amplifier inputs, are also dc voltage controlled with a range of gain from -56 dB to 20 dB.
An integrated 5v regulated supply is provided for powering an external headphone amplifier.
11.29.2. Features
•
9W/Ch into an 8 Ohm Load from 12v Supply
12W/Ch into an 8 Ohm Load from 15v Supply
•
Efficient, Class-D Operation Eliminates
•
Heatsinks and Reduces Power Supply Requirements
•
32 Step DC Volume Control From -40dB to 36dB
•
Line Outputs for External Headphone Amplifier with Volume Control
•
Regulated 5v Supply Output for Powering TPA6110A2
•
Space-Saving, Thermally-Enhanced PowerPAD™ Packaging
•
Thermal and Short-Circuit Protection
Applications
•
LCD Monitors and TVs
•
Powered
Speakers
29
TFT TV Service Manual
Содержание 32LD8600
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