The TPA2000D2 is the third generation 5-V class-D amplifier from Texas Instruments

TPA2000D2

Manufacturer Part NumberTPA2000D2
DescriptionThe TPA2000D2 is the third generation 5-V class-D amplifier from Texas Instruments
ManufacturerTexas Instruments
TPA2000D2 datasheet
 


Specifications of TPA2000D2

Speaker ChannelsStereoSpeaker Amp TypeClass-D
Output Power(w)2Psrr(db)77
Supply Min(min)(volt)4.5Supply Max(max)(volt)5.5
Pin/package24HTSSOP, 24TSSOP  
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2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
FEATURES
Modulation Scheme Optimized to Operate
Without a Filter
2 W Into 3-
Speakers (THD+N< 0.4%)
< 0.08% THD+N at 1 W, 1 kHz, Into 4-
Extremely Efficient Third 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
– Maximum Efficiency Into 3
– Maximum Efficiency Into 8
– 4 Internal Gain Settings . . . 8-23.5 dB
– PSRR . . . -77 dB
Integrated Depop Circuitry
DESCRIPTION
The TPA2000D2 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 TPA2000D2 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 TPA2000D2 is configured as a bridge-tied load (BTL) amplifier capable of delivering
greater than 2 W of continuous average power into a 3-
in the high fidelity range (20 Hz to 20 kHz). With 1 W being delivered to a 4-
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 TPA2000D2 to operate at full power into 3-
temperature of 85°C.
T
A
–40°C to 85°C
(1) For the most current package and ordering information, see the Package Option Addendum at the end
of this document, or see the TI web site at www.ti.com.
(2) 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., TPA2000D2PWPR).
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.
Short-Circuit Protection (Short to Battery,
Ground, and Load)
-40°C to 85°C Operating Temperature Range
Load
PGND
LOUTN
GAIN0
AGND
RMS
COSC
, 65-70%
, 75-85%
SHUTDOWN
ROUTN
PGND
load at less than 1% THD+N from a 5-V power supply
AVAILABLE OPTIONS
PACKAGED DEVICE
TSSOP (PW)
TPA2000D2PW
TPA2000D2
SLOS291F – MARCH 2000 – REVISED MARCH 2007
PW OR PWP PACKAGE
(TOP VIEW)
1
24
2
23
3
22
PV
4
21
DD
LINN
5
20
6
19
7
18
RINN
8
17
PV
9
16
DD
10
15
11
14
12
13
load at 1 kHz, the typical THD+N
loads at an ambient
(1)
(2)
TSSOP (PWP)
TPA2000D2PWP
Copyright © 2000–2007, Texas Instruments Incorporated
PGND
LOUTP
BYPASS
PV
DD
LINP
V
DD
ROSC
RINP
PV
DD
GAIN1
ROUTP
PGND

TPA2000D2 Summary of contents

  • Page 1

    ... Eliminating the output filter saves the user approximately 30% in system cost and 75% in PCB area. The TPA2000D2 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 ...

  • Page 2

    ... TPA2000D2 SLOS291F – MARCH 2000 – REVISED MARCH 2007 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. RINN RINP SHUTDOWN 2 GAIN1 Gain GAIN0 ...

  • Page 3

    ... DERATING FACTOR A ABOVE T = 25°C A 1.04 W 8.34 mW/°C 2.7 W 21.8 mW/°C Submit Documentation Feedback TPA2000D2 SLOS291F – MARCH 2000 – REVISED MARCH 2007 UNIT - See Dissipation Rating Table -40°C to 85°C -40°C to 150°C -65°C to 150°C 260° 70° ...

  • Page 4

    ... TPA2000D2 SLOS291F – MARCH 2000 – REVISED MARCH 2007 RECOMMENDED OPERATING CONDITIONS Supply voltage High-level input voltage IH V Low-level input voltage IL R Oscillator resistance OSC C Oscillator capacitance OSC f Switching frequency s T Operating free-air temperature A ELECTRICAL CHARACTERISTICS T = 25° ...

  • Page 5

    ... Output power vs Frequency vs Frequency vs Frequency (Figure 2 and Figure 3) is shown in (Figure 2 and Figure 3) is shown Figure 1. Class-D Output Filter Submit Documentation Feedback TPA2000D2 SLOS291F – MARCH 2000 – REVISED MARCH 2007 FIGURE 5 Figure 1. Figure 1, where ferrite 5 ...

  • Page 6

    ... TPA2000D2 SLOS291F – MARCH 2000 – REVISED MARCH 2007 EFFICIENCY vs OUTPUT POWER 90 Ferrite Bead Filter Filter Multimedia Speaker 0.2 0.4 0.6 P − Output Power − Figure 2. +0 −20 −40 −60 −80 −100 −120 −140 0 2k ...

  • Page 7

    ... TOTAL HARMONIC DISTORTION PLUS NOISE Gain = 23 0.1 0. Submit Documentation Feedback TPA2000D2 SLOS291F – MARCH 2000 – REVISED MARCH 2007 vs OUTPUT POWER = kHz kHz 100 − Output Power − Figure 6. vs FREQUENCY ...

  • Page 8

    ... TPA2000D2 SLOS291F – MARCH 2000 – REVISED MARCH 2007 TYPICAL CHARACTERISTICS (continued) CROSSTALK vs FREQUENCY −30 −40 Left to Right −50 −60 − 100 f − Frequency − Hz Figure 10. 8 TOTAL HARMONIC DISTORTION PLUS NOISE vs FREQUENCY Gain = 23 0 0.1 0.5 W ...

  • Page 9

    ... Figure 12. Traditional Class-D Modulation Scheme's Output Voltage and Current Waveforms Into an TPA2000D2 MODULATION SCHEME The TPA2000D2 uses a modulation scheme that still has each output switching from 0 to the supply voltage. However, OUT+ and OUT- are now in phase with each other with no input. The duty cycle of OUT+ is greater than 50% and OUT- is less than 50% for positive voltages ...

  • Page 10

    ... The speaker is both resistive and reactive, whereas an LC filter is almost purely reactive. The TPA2000D2 modulation scheme has very little loss in the load without a filter because the pulses are very short and the change in voltage is V making the ripple current larger ...

  • Page 11

    ... For design purposes, the input network (discussed in the next section) should be designed assuming an input impedance which is the absolute minimum input impedance of the TPA2000D2. At the lower gain settings, the input impedance could increase to as high as 115 k . ...

  • Page 12

    ... TPA2000D2 SLOS291F – MARCH 2000 – REVISED MARCH 2007 INPUT RESISTANCE Each gain setting is achieved by varying the input resistance of the amplifier, which can range from its smallest value to over 6 times that value. Input Signal The -3 dB frequency can be calculated using ...

  • Page 13

    ... TPA2000D2 EVM with a differential source, connect the positive lead of the audio source to the RINP (LINP) input and the negative lead from the audio source to the RINN (LINN) input. To use the TPA2000D2 with a single-ended source, ac ground the RINN and LINN inputs through a capacitor and apply the audio single to the RINP and LINP inputs ...

  • Page 14

    ... C3 0.1 F RIGHT AUDIO INPUT+ TO SYSTEM CONTROL C18 0.1 F VDD C4 RIGHT AUDIO INPUT– 0.1 F Table 3. TPA2000D2 Application Bill of Materials REFERENCE DESCRIPTION C1-4, C17-21 Capacitor, ceramic chip, 0.1 µF, ±10%, X7R Capacitor, ceramic, 1.0 µF, 80%/-20%, Y5V C6, C8 Capacitor, ceramic, 10 µF, 80%/-20%, Y5V Capacitor, ceramic, 220 pF, ±10%, XICON ...

  • Page 15

    ... ACTIVE TPA2000D2PWG4 ACTIVE TPA2000D2PWP ACTIVE TPA2000D2PWPG4 ACTIVE TPA2000D2PWPR ACTIVE TPA2000D2PWPRG4 ACTIVE TPA2000D2PWR ACTIVE TPA2000D2PWRG4 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. ...

  • Page 16

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing TPA2000D2PWPR HTSSOP PWP TPA2000D2PWR TSSOP PW PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) 24 2000 330.0 16.4 6.95 24 2000 330.0 16.4 6.95 Pack Materials-Page 1 5-Sep-2008 B0 (mm) K0 (mm) ...

  • Page 17

    ... Device Package Type TPA2000D2PWPR HTSSOP TPA2000D2PWR TSSOP PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) PWP 24 2000 PW 24 2000 Pack Materials-Page 2 5-Sep-2008 Width (mm) Height (mm) 346.0 346.0 33.0 346.0 346.0 33.0 ...

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  • Page 23

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...