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TPA3112D1 Arkusz danych(PDF) 5 Page - Texas Instruments

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Numer części TPA3112D1
Szczegółowy opis  25-W FILTER-FREE MONO CLASS-D AUDIO POWER AMPLIFIER with SPEAKER GUARD?
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TPA3112D1 Arkusz danych(HTML) 5 Page - Texas Instruments

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TPA3112D1
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SLOS654A – SEPTEMBER 2009 – REVISED JULY 2010
PIN FUNCTIONS
PIN
I/O
DESCRIPTION
NAME
Pin #
Shutdown logic input for audio amp(LOW = outputs Hi-Z, HIGH = outputs enabled).
SD
1
I
TTL logic levels with compliance to AVCC.
Open drain output used to display short circuit or dc detect fault status. Voltage
compliant to AVCC. Short circuit faults can be set to auto-recovery by connecting
FAULT
2
O
FAULT pin to SD pin. Otherwise both the short circuit faults and dc detect faults
must be reset by cycling PVCC.
GND
3
Connect to local ground
GND
4
Connect to local ground
GAIN0
5
I
Gain select least significant bit. TTL logic levels with compliance to AVCC.
GAIN1
6
I
Gain select most significant bit. TTL logic levels with compliance to AVCC.
AVCC
7
P
Analog supply.
AGND
8
Analog supply ground. Connect to the thermal pad.
High-side FET gate drive supply. Nominal voltage is 7V. May also be used as
GVDD
9
O
supply for PLILMIT divider. Add a 1mF cap to ground at this pin.
Power limit level adjust. Connect directly to GVDD pin for no power limiting. Add a
PLIMIT
10
I
1mF cap to ground at this pin.
INN
11
I
Negative audio input. Biased at 3V.
INP
12
I
Positive audio input. Biased at 3V.
NC
13
Not connected
AVCC
14
P
Connect AVCC supply to this pin
PVCC
15
P
Power supply for H-bridge. PVCC pins are also connected internally.
PVCC
16
P
Power supply for H-bridge. PVCC pins are also connected internally.
BSP
17
I
Bootstrap I/O for positive high-side FET.
OUTP
18
O
Class-D H-bridge positive output.
PGND
19
Power ground for the H-bridges.
OUTP
20
O
Class-D H-bridge positive output.
BSP
21
I
Bootstrap I/O for positive high-side FET.
BSN
22
I
Bootstrap I/O for negative high-side FET.
OUTN
23
O
Class-D H-bridge negative output.
PGND
24
Power ground for the H-bridges.
OUTN
25
O
Class-D H-bridge negative output.
BSN
26
I
Bootstrap I/O for negative high-side FET.
PVCC
27
P
Power supply for H-bridge. PVCC pins are also connected internally.
PVCC
28
P
Power supply for H-bridge. PVCC pins are also connected internally.
Copyright © 2009–2010, Texas Instruments Incorporated
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