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TAA2008 Datasheet(PDF) 4 Page - Tripath Technology Inc.

No. de pieza TAA2008
Descripción Electrónicos  STEREO 9W (8?? CLASS-T??DIGITAL AUDIO AMPLIFIER USING DIGITAL POWER PROCESSING??TECHNOLOGY
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Fabricante Electrónico  TRIPATH [Tripath Technology Inc.]
Página de inicio  http://www.etelos.com/
Logo TRIPATH - Tripath Technology Inc.

TAA2008 Datasheet(HTML) 4 Page - Tripath Technology Inc.

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Tri p ath Techn o l o g y, I n c. - T echn i cal I n fo rmation
4
TAA2008 –KLi/1.0/05.06
P I N DE SCRI PTI ON
T AA2 00 8 PI N O U T
Pin
Function
Description
1, 29
OAOUT2, OAOUT1
Input stage output pins.
2, 30
INV2, INV1
Single-ended inputs. Inputs are a “virtual” ground of an inverting opamp with
approximately 2.4VDC bias.
3
BIASCAP
Input stage bias voltage (approximately 2.4VDC).
4, 24,
27
AGND3, AGND1,
AGND2
Analog Ground
5
SLEEP
When set to logic high, device goes into low power mode. If not used, this pin
should be grounded
6
FAULT
A logic high output indicates thermal overload, or an output is shorted to ground,
or another output.
7, 18
PGND2, PGND1
Power Grounds (high current)
8
DGND
Digital Ground. Connect to AGND locally (near the TAA2008).
10, 12;
15, 13
OUTP2 & OUTM2;
OUTP1 & OUTM1
Bridged output pairs
11, 14
VDD2, VDD1
Supply pins for high current H-bridges, nominally 12VDC.
17
VDDA
Analog 12VDC. Connect to same supply as VDD1 and VDD2.
19
CPUMP
Charge pump output (nominally 10V above VDDA)
20
5VGEN
Regulated 5VDC source used to supply power to the input section (pins 23 and
28).
21,22
DCAP2, DCAP1
Charge pump switching pins. DCAP1 (pin 22) is a free running 300kHz square
wave between VDDA and DGND (12Vpp nominal). DCAP2 (pin 21) is level
shifted 10 volts above DCAP1 (pin 22) with the same amplitude (12Vpp nominal),
frequency, and phase as DCAP1.
23, 28
V5D, V5A
Digital 5VDC, Analog 5VDC
25
REF
Internal reference voltage; approximately 1.0 VDC.
26
OVERLOADB
A logic low output indicates the input signal has overloaded the amplifier.
31
MUTE
When set to logic high, both amplifiers are muted and in idle mode. When low
(grounded), both amplifiers are fully operational. If left floating, the device stays in
the mute mode. This pin should be tied to GND if not used.
9, 16, 32
NC
Not connected. Not bonded internally.
PGND1
5VGEN
DCAP2
DCAP1
V5D
AGND1
INV2
DGND
PGND2
FAULT
SLEEP
AGND3
BIASCAP
18
17
1
8
7
6
5
4
3
2
32-pin QFN
(Top View)
OAOUT2
24
19
20
21
22
23
CPUMP
VDDA


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