Texas Instruments TPA2001D2PWPR, TPA2001D2PWP Datasheet

TPA2001D2

1-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER

SLOS292A – MARCH 2000 – REVISED APRIL 2000

 Modulation Scheme Optimized to Operate

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

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 8 Ω, 75 – 85%
– 4 Internal Gain Settings ...8 – 23.5 dB
– PSRR . . . –77 dB

rd

Generation 5-V

RMS

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

 Integrated Depop Circuitry
 Short-Circuit Protection (Short to Battery,

Ground, and Load)

 –40°C to 85°C Operating Temperature

Range

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 ef ficiency , 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.

PGND
LOUTP
BYPASS
PV

DD

LINP
V

DD

ROSC
RINP
PV

DD

GAIN1
ROUTP
PGND

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

TSSOP (PWP)

Copyright  2000, Texas Instruments Incorporated

–40°C to 85°C TPA2001D2PWP

NOTE: The PWP package is available taped and reeled. To

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.

T

A

order a taped and reeled part, add the suffix R to the
part number (e.g., TPA2001D2PWPR).

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

1

TPA2001D2
1-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER

SLOS292A – MARCH 2000 – REVISED APRIL 2000

functional block diagram

RINN

RINP

SHUTDOWN

GAIN1
GAIN0

COSC
ROSC

BYPASS

LINP

Gain

2

Gain

Adjust

_

+

_

+

Gain

Adjust

Biases

and

References

Gain

Adjust

DD

V

DD

Ramp

Generator

AGNDV

PV

DD

+
_

_
+

Protection

Thermal VDD ok

+
_

Start-up

Logic

Gate

Drive

Gate

Drive

Gate

Drive

OC

Detect

OC

Detect

ROUTN

PGND
PV

DD

ROUTP

PGND

PV

DD

LOUTP

LINN

_
+

Gain

Adjust

+

_

_
+

Gate

Drive

PGND
PV

DD

LOUTN

PGND

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPA2001D2

1-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER

SLOS292A – MARCH 2000 – REVISED APRIL 2000

Terminal Function

TERMINAL

NAME NO.

AGND 6 – Analog ground
BYPASS 22 I Tap to voltage divider for internal midsupply bias generator used for analog reference.

COSC 7 I
GAIN0 3 I Bit 0 of gain control (TTL logic level)

GAIN1 15 I Bit 1 of gain control (TTL logic level)
LINN 5 I Left channel negative differential audio input
LINP 20 I Left channel positive differential audio input
LOUTN 2 O Left channel negative audio output
LOUTP 23 O Left channel positive audio output

PGND

PV

DD

RINN 8 I Right channel negative differential audio input
RINP 17 I Right channel positive differential audio input

ROSC 18 I
ROUTN 11 O Right channel negative audio output

ROUTP 14 O Right channel positive output
SHUTDOWN 10 I
V

DD

1, 24 – Power ground for left channel H-bridge

12, 13 – Power ground for right channel H-bridge

4, 21 – Power supply for left channel H-bridge
9, 16 – Power supply for right channel H-bridge

I/O

A capacitor connected to this terminal sets the oscillation frequency in conjunction with ROSC. For proper
operation, connect a 220 pF capacitor from COSC to ground.

A resistor connected to this terminal sets the oscillation frequency in conjunction with COSC. For proper
operation, connect a 120 kΩ resistor from ROSC to ground.

Places the amplifier in shutdown mode if a TTL logic low is placed on this terminal; normal operation if a TTL
logic high is placed on this terminal.

19 – Analog power supply

DESCRIPTION

absolute maximum ratings over operating free-air temperature (unless otherwise noted)

†

Supply voltage, VDD, PVDD –0.3 V to 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage, VI –0.3 V to VDD+0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total power dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range, T
Operating junction temperature range, T
Storage temperature range, T

stg

–40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A

–40°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

J

–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

PWP 2.7 W 21.8 mW/°C 1.7 W 1.4 W

TA ≤ 25°C

POWER RATING

DERATING FACTOR

ABOVE TA = 25°C

TA = 70°C

POWER RATING

TA = 125°C

POWER RATING

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

3

TPA2001D2

GAIN0

GAIN1

1-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER

SLOS292A – MARCH 2000 – REVISED APRIL 2000

recommended operating conditions

MIN MAX UNIT

Supply voltage, VDD, PV
High-level input voltage, V
Low-level input voltage, V
Operating free-air temperature, T
PWM Frequency 200 300 kHz

DD

IL

IH

GAIN0, GAIN1, SHUTDOWN 2 V
GAIN0, GAIN1, SHUTDOWN 0.8 V

A

electrical characteristics, TA = 25°C, VDD = PVDD = 5 V (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

| VOO | Output offset voltage (measured differentially) VI = 0 V 10 mV
PSRR Power supply rejection ratio VDD=PVDD = 4.5 V to 5.5 V –77 dB
I

IH

I

IL

I

DD

I

DD

I

DD(SD)

High-level input current VDD=PVDD = 5.5 V, VI = VDD = PV
Low-level input current VDD=PVDD = 5.5 V, VI = 0 V –1 µA
Supply current No filter (with or without speaker load) 8 10 mA
Supply current
Supply current, shutdown mode 1 10 µA

With filter, L = 22 µH, C = 1 µF

DD

4.5 5.5 V

–40 85 °C

1 µA

15 mA

operating characteristics, TA = 25°C, VDD = PVDD = 5 V , RL = 8 Ω, Gain = 8 dB (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

P

O

THD+N Total harmonic distortion plus noise PO = 0.5 W, f = 20 Hz to 20 kHz <0.2%
B

OM

k

SVR

SNR Signal-to-noise ratio 20 Hz to 20 kHz 87 dBV

Z

I

Output power THD = 0.4%, f = 1 kHz, RL = 8 Ω 1 W

Maximum output power bandwidth THD = 5% 20 kHz
Supply ripple rejection ratio f = 1 kHz, C

Integrated noise floor 20 Hz to 20 kHz, No input 56
Input impedance >20 kΩ

(BYPASS)

= 0.4 µF –60 dB

µV

Table 1. Gain Settings

AMPLIFIER GAIN

GAIN0 GAIN1

0 0 8 104
0 1 12 74
1 0 17.5 44
1 1 23.5 24

(dB)

TYP TYP

INPUT IMPEDANCE

(kΩ)

4

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