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TA3020 Datasheet(PDF) 6 Page - Tripath Technology Inc.

No. de Pieza. TA3020
Descripción  Stereo 300W (4Ω) Class-T Digital Audio Amplifier Driver using Digital Power ProcessingTM Technology
Descarga  29 Pages
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Fabricante  TRIPATH [Tripath Technology Inc.]
Página de inicio  http://www.etelos.com/
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TA3020 Datasheet(HTML) 6 Page - Tripath Technology Inc.

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TE CH NI C A L IN F O RM A T I O N
6
TA3020, Rev 2.1, 01.01
Pin Description
Pin
Function
Description
1
VN10
“Floating” supply input for the FET drive circuitry. This voltage must be stable
and referenced to VNN.
2,48
LO2, LO1
Low side gate drive output (Channel 2 & 1)
3,47
LO2COM, LO1COM
Kelvin connection to source of low-side transistor (Channel 2 & 1)
4,46
HO2COM, HO1COM
Kelvin connection to source of high-side transistor (Channel 2 & 1)
5,45
HO2, HO1
High side gate drive output (Channel 2 & 1)
6, 7
OCS2LN, OCS2LP
Over Current Sense inputs, Channel 2 low-side
8, 9
OCS2HP, OCS2HN
Over Current Sense inputs, Channel 2 high-side
10, 40
VBOOT2, VBOOT1
Bootstrapped voltage to supply drive to gate of high-side FET
(Channel 2 & 1)
12, 31
OCR2
Over-current threshold adjustment (Channel 2)
13, 16
FBKOUT1, FBKOUT2
Switching feedback (Channels 1 & 2)
14, 18
FBKGND1, FBKGND2
Ground Kelvin feedback (Channels 1 & 2)
15
HMUTE
Logic Output. A logic high indicates both amplifiers are muted, due to the
mute pin state, or a “fault” such as an overcurrent, undervoltage, or
overvoltage condition.
17
DCOMP
Internal mode selection. This pin must be grounded for proper device
operation.
19
BIASCAP
Bandgap reference times two (typically 2.5VDC). Used to set the common
mode voltage for the input op amps. This pin is not capable of driving external
circuitry.
20, 25
INV2, INV1
Inverting inputs of Input Stage op amps. (Channels 2 & 1)
21, 26
OAOUT2, OAOUT1
Outputs of Input Stage op amps. (Channels 2 & 1)
22, 23
BBM0, BBM1
Break-before-make timing control to prevent shoot-through in the output FETs.
24
MUTE
Logic input. A logic high puts the amplifier in mute mode. Ground pin if not
used. Please refer to the section, Mute Control, in the Application Information.
27, 35
V5
5V power supply input.
28,34
AGND
Analog ground.
29
VPPSENSE
Positive supply voltage sense input. This pin is used for both over and
under voltage sensing for the VPP supply.
30
VNNSENSE
Negative supply voltage sense input. This pin is used for both over and under
voltage sensing for the VNN supply.
32
REF
Used to set internal bias currents. The pin voltage is typically 1.1V.
33, 37
OCR1
Over-current threshold adjustment (Channel 1)
39
VNN
Negative supply voltage.
41, 42
OCS1LN, OCS1LP
Over Current Sense inputs, Channel 1 low-side
43, 44
OCS1HP, OCS1HN
Over Current Sense inputs, Channel 1 high-side
11, 36,
38
NC
Not connected (bonded) internally. To minimize coupling between pins, tie
these pins to AGND (pin34).


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