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TPA731 Datasheet(PDF) 2 Page - Texas Instruments

Part No. TPA731
Description  700-MW MONO LOW-VOLTAGE AUDIO POWER AMPLIFIER WITH DIFFERENTIAL INPUTS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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TPA731 Datasheet(HTML) 2 Page - Texas Instruments

 
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TPA731
700mW MONO LOW VOLTAGE AUDIO POWER AMPLIFIER
WITH DIFFERENTIAL INPUTS
SLOS315B − JUNE 2000 − REVISED OCTOBER 2002
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
AVAILABLE OPTIONS
PACKAGED DEVICES
MSOP
TA
SMALL OUTLINE†
(D)
MSOP‡
(DGN)
MSOP
SYMBOLIZATION
−40
°C to 85°C
TPA731D
TPA731DGN
AJC
† In the SOIC package, the maximum RMS output power is thermally limited to 350 mW; 700 mW
peaks can be driven, as long as the RMS value is less than 350 mW.
‡ The D and DGN packages are available taped and reeled. To order a taped and reeled part, add
the suffix R to the part number (e.g., TPA731DR).
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
BYPASS
2
I
BYPASS is the tap to the voltage divider for internal mid-supply bias. This terminal should be connected to
a 0.1-
µF to 2.2-µF capacitor when used as an audio amplifier.
GND
7
GND is the ground connection.
IN −
4
I
IN − is the inverting input. IN − is typically used as the audio input terminal.
IN+
3
I
IN + is the noninverting input. IN + is typically tied to the BYPASS terminal for SE operations.
SHUTDOWN
1
I
SHUTDOWN places the entire device in shutdown mode when held high (IDD = 1.5 nA).
VDD
6
VDD is the supply voltage terminal.
VO+
5
O
VO+ is the positive BTL output.
VO−
8
O
VO− is the negative BTL output.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)§
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 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
§ 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.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
DERATING FACTOR
TA = 70°C
TA = 85°C
D
725 mW
5.8 mW/
°C
464 mW
377 mW
DGN
2.14 W¶
17.1 mW/
°C
1.37 W
1.11 W
¶ Please see the Texas Instruments document, PowerPAD Thermally Enhanced Package Application Report
(SLMA002), for more information on the PowerPAD package. The thermal data was measured on a PCB
layout based on the information in the section entitled Texas Instruments Recommended Board for PowerPAD
on page 33 of that document.
recommended operating conditions
MIN
MAX
UNIT
Supply voltage, VDD
2.5
5.5
V
High-level voltage, VIH (SHUTDOWN)
0.9VDD
V
Low-level voltage, VIL (SHUTDOWN)
0.1VDD
V
Operating free-air temperature, TA
−40
85
°C


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