TPA2001D2
1-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS292A – MARCH 2000 – REVISED APRIL 2000
D
Modulation Scheme Optimized to Operate
D
D
D
Without a Filter
1 W Into 8-Ω Speakers (THD+N< 0.4%)
< 0.08% THD+N at 0.5 W, 1 kHz, Into 8-Ω
Load
Extremely Efficient 3
rd
Generation 5-V
Class-D Technology:
– Low Supply Current (No Filter) . . . 8 mA
– Low Supply Current (Filter) . . . 15 mA
– Low Shutdown Current . . . 1
µA
– Low Noise Floor . . . 56
µV
RMS
– Maximum Efficiency Into 8
Ω,
75 – 85%
– 4 Internal Gain Settings . . . 8 – 23.5 dB
– PSRR . . . –77 dB
Integrated Depop Circuitry
Short-Circuit Protection (Short to Battery,
Ground, and Load)
–40°C to 85°C Operating Temperature
Range
PGND
LOUTN
GAIN0
PV
DD
LINN
AGND
COSC
RINN
PV
DD
SHUTDOWN
ROUTN
PGND
PWP PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
PGND
LOUTP
BYPASS
PV
DD
LINP
V
DD
ROSC
RINP
PV
DD
GAIN1
ROUTP
PGND
D
D
D
description
The TPA2001D2 is the third generation 5-V class-D amplifier from Texas Instruments. Improvements to
previous generation devices include: lower supply current, lower noise floor, better efficiency, four different gain
settings, smaller packaging, and fewer external components. The most significant advancement with this device
is its modulation scheme that allows the amplifier to operate without the output filter. Eliminating the output filter
saves the user approximately 30% in system cost and 75% in PCB area.
The TPA2001D2 is a monolithic class-D power IC stereo audio amplifier, using the high switching speed of
power MOSFET transistors. These transistors reproduce the analog signal through high-frequency switching
of the output stage. The TPA2001D2 is configured as a bridge-tied load (BTL) amplifier capable of delivering
greater than 1 W of continuous average power into an 8-Ω load at less than 0.6% THD+N from a 5-V power
supply in the high fidelity range (20 Hz to 20 kHz). With 1 W being delivered to an 8-Ω load at 1 kHz, the typical
THD+N is less than 0.08%.
A BTL configuration eliminates the need for external coupling capacitors on the output. Low supply current of
8 mA makes the device ideal for battery-powered applications. Protection circuitry increases device reliability:
thermal, over-current, and under-voltage shutdown.
Efficient class-D modulation enables the TPA2001D2 to operate at full power into 8-Ω loads at an ambient
temperature of 85°C.
AVAILABLE OPTIONS
PACKAGED DEVICE
TA
– 40°C to 85°C
TSSOP (PWP)
TPA2001D2PWP
NOTE: The PWP package is available taped and reeled. To
order a taped and reeled part, add the suffix R to the
part number (e.g., TPA2001D2PWPR).
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.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
©
2000, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
1
ETC [ ETC ]
