TPA3007D1_15 Datasheet, PDF (1/24 Pages) Texas Instruments – 6.5-W MONO CLASS-D AUDIO POWER AMPLIFIER

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TPA3007D1
SLOS418D – SEPTEMBER 2003 – REVISED MARCH 2008
6.5-W MONO CLASS-D AUDIO POWER AMPLIFIER
FEATURES
1
• 6.5 W Into 8-Ω Load From 12-V Supply
(10% THD+N)
• Short Circuit Protection (Short to V_CC, Short to
GND, Short Between Outputs)
• Third-Generation Modulation Technique:
– Replaces Large LC Filter With Small,
Low-Cost Ferrite Bead Filter in Most
Applications
– Improved Efficiency
– Improved SNR
• Low Supply Current ... mA Typ at 12 V
• Shutdown Control ... < 1µA Typ
APPLICATIONS
• LCD Monitors/TVs
• Desktop Replacement Notebook PCs
• Hands-Free Car Kits
• Powered Speakers
DESCRIPTION
The TPA3007D1 is a 6.5-W mono bridge-tied load
(BTL) class-D audio power amplifier with high
efficiency, eliminating the need for heat sinks. The
TPA3007D1 can drive 8-Ω speakers with only a
ferrite bead filter required to reduce EMI.
The gain of the amplifier is controlled by two input
terminals, GAIN1 and GAIN0. This allows the
amplifier to be configured for a gain of 12, 18, 23.6,
and 36 dB. The differential input stage provides high
common mode rejection and improved power supply
rejection.
The amplifier also includes "de-pop" circuitry to
reduce the amount of pop at power-up and when
cycling SHUTDOWN.
The TPA3007D1 is available in the 24-pin TSSOP
package (PW) and does not require an external heat
sink.
Functional Schematic Diagram
IN−
IN+
GAIN SELECT
GAIN SELECT
SHUTDOWN
CONTROL
C1 0.47 µF
C2 0.47 µF
C10
1 µF
V_CC
C7
10 µF
C8
0.22 µF
C5
1 µF
D2
U1
TPA3007D1
1 _INN
2 _INP
V_CC ²⁴
VREF ²³
3 _GAIN0
BYPASS ²²
4 _GAIN1
COSC 21
5
6
7
R2 ₈
51 Ω ₉
10
SHUTDOWN
PGND
VCLAMP
BSN
PV_CC
OUTN
ROSC 20
AGND ¹⁹
AGND ¹⁸
BSP ¹⁷
PV_CC 16
OUTP ¹⁵
11 _OUTN
OUTP ¹⁴
12 _PGND
PGND ¹³
C3
1 µF
C12
220 pF
C11
1 µF
R1
120 kΩ
C4
1 µF
R3
51 Ω
C9
0.22 µF
C6
1 µF
D1
V_CC
V_CC
L2
L1
(Ferrite ^(Ferrite
Bead) ^Bead)
C15
1 nF
C14
1 nF
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003–2008, Texas Instruments Incorporated