Tpa3002D2 - Akai LTA-26C903 Service Manual

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TPA3002D2：
The TPA3002D2 is a 9-W (per channel) efficient, Class-D audio amplifier for driving bridged-tied stereo
speakers. The TPA3002D2 can drive stereo speakers as low as 8 . The high efficiency of the TPA3002D2
eliminates the need for external heatsinks when playing music.
Main Features：
● 9W /Ch into an 8Ω load from 12Vsupply;
● Efficient, class D operation eliminates heatsinks and reduces power supply requirements;
●32-step DC volume control from -40db~36db;
●Line outputs for external headphone;
●Thermal and short-circuit protection
Pins Functions：
Pin Name
26, 30 AGND
33 AVCC
29 AVDD
7 AVDDREF
13 BSLN
24 BSLP
48 BSRN
37 BSRP
28 COSC
6 LINN
5 LINP
16，17 LOUTN
20，21 LOUTP
34 MODE
35 MODE_OUT
HS
VS
CS
ORR/V
ORB/U
ORG/Y
VAI
FREF
VREF
Analog ground for digital/analog cells in core
High-voltage analog power supply（8~14V）
5V regulated output capable of 100mA output
Reference 5V output
Bootstrap I/O left channel
Bootstrap I/O right channel
I/O for charge/discharge currents onto capacitor for ramp generator
triangle wave
Negative differential audio input for left channel
Positive differential audio input for left channel
Class-D 1/2-H-bridge negative output for left channel
Class-D 1/2-H-bridge positive output for left channel
Input for MODE control. A logic high on this pin places the amplifier in
the variable output mode and the Class-D outputs are disabled. A logic
low on this pin places the amplifier in the Class-D mode and Class-D
stereo outputs are enabled. Variable outputs (VAROUTL and
VAROUTR) are still enabled in Class-D mode to be used as line-level
outputs for external amplifiers.
Output for control of the variable output amplifiers. When the MODE pin
Horizontal synchronization input
vertical synchronization input
Color synchronization output
Red / chrominance ADC output
Blue /chrominance ADC output
Green / chrominance ADC output
Video dynamic indication output
Scan output
Vertical channel reference input
Description
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