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TPA0142PWP Datenblatt(PDF) 3 Page - Texas Instruments

Teilenummer TPA0142PWP
Bauteilbeschribung  2.8-W STEREO AUDIO POWER AMPLIFIER WITH DC VOLUME CONTROL
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Hersteller  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
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ABSOLUTE MAXIMUM RATINGS
TPA0142
SLOS248E – JUNE 1999 – REVISED SEPTEMBER 2004
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
BYPASS
11
Tap to voltage divider for internal mid-supply bias generator
If a 47-nF capacitor is attached, the TPA0142 generates an internal clock. An external clock can override the
CLK
17
I
internal clock input to this terminal.
1, 12
GND
I
Ground connection for circuitry. Connected to thermal pad
13, 24
LHPIN
6
I
Left channel headphone input, selected when SE/BTL is held high
LIN
10
I
Common left input for fully differential input. AC ground for single-ended inputs
LLINEIN
5
I
Left channel line negative input, selected when SE/BTL is held low
LOUT+
4
O
Left channel positive output in BTL mode and positive output in SE mode
LOUT-
9
O
Left channel negative output in BTL mode and high-impedance in SE mode
If this terminal is high, the detection circuitry for PC-BEEP is overridden and passes PC-BEEP through the
PCB EN-
2
I
amplifier, regardless of its amplitude. If PCB ENABLE is floating or low, the amplifier continues to operate
ABLE
normally.
The input for PC-Beep mode. PC-BEEP is enabled when a > 1.5-VPP (peak-to-peak) square wave is input to
PC-BEEP
14
I
PC-BEEP or PCB ENABLE is high.
PVDD
7, 18
I
Power supply for output stage
RHPIN
20
I
Right channel headphone input, selected when SE/BTL is held high
RIN
8
I
Common right input for fully differential input. AC ground for single-ended inputs
RLINEIN
23
I
Right channel line input, selected when SE/BTL is held low
ROUT+
21
O
Right channel positive output in BTL mode and positive output in SE mode
ROUT-
16
O
Right channel negative output in BTL mode and high-impedance in SE mode
Input and output MUX control. When this terminal is held high, the LHPIN or RHPIN and SE output is
SE/BTL
15
I
selected. When this terminal is held low, the LLINEIN or RLINEIN and BTL output are selected.
SHUTDOWN
22
I
When held low, this terminal places the entire device, except PC-BEEP detect circuitry, in shutdown mode.
VDD
19
I
Analog VDD input supply. This terminal needs to be isolated from PVDD to achieve highest performance.
VOLUME detects the dc level at the terminal and sets the gain for 31 discrete steps covering a range of 20
VOLUME
3
I
dB to -40 dB for dc levels of 0.15 V to 3.54 V. When the dc level is over 3.54 V, the device is muted.
Thermal Pad
Connect to ground. Must be soldered down in all applications to properly secure device on PC board.
over operating free-air temperature range (unless otherwise noted)(1)
UNIT
Supply voltage, VDD
6 V
Input voltage, VI
-0.3 V to VDD 0.3 V
Continuous total power dissipation
Internally limited (see Dissipation Rating Table)
Operating free-air temperature range, TA
-40
°C to 85°C
Operating junction temperature range, TJ
-40
°C to 150°C
Storage temperature range, Tstg
-65
°C to 85°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
°C
(1)
Stresses beyond those listed under "absolute maximum ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
3


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