Texas Instruments TPA152EVM, TPA152DR, TPA152D Datasheet

TPA152

75-mW STEREO AUDIO POWER AMPLIFIER

SLOS210A – JUNE 1998 – REVISED MARCH 2000

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D

High-Fidelity Line-Out/HP Driver

D

75-mW Stereo Output

D

PC Power Supply Compatible

D

Pop Reduction Circuitry

D

Internal Mid-Rail Generation

D

Thermal and Short-Circuit Protection

D

Surface-Mount Packaging

D

Pin Compatible With TPA302

description

The TPA152 is a stereo audio power amplifier capable of less than 0.1% THD+N at 1 kHz when delivering
75 mW per channel into a 32-Ω load. THD+N is less than 0.2% across the audio band of 20 to 20 kHz. For
10 kΩ loads, the THD+N performance is better than 0.005% at 1 kHz, and less than 0.01% across the audio
band of 20 to 20 kHz.

The TP A152 is ideal for use as an output buffer for the audio CODEC in PC systems. It is also excellent for use
where a high-performance head phone/line-out amplifier is needed. Depop circuitry is integrated to reduce
transients during power up, power down, and mute mode.

Amplifier gain is externally configured by means of two resistors per input channel and does not require external
compensation for settings of 1 to 10. The TP A152 is packaged in the 8-pin SOIC (D) package that reduces board
space and facilitates automated assembly.

typical application circuit

Stereo

RLR

L

C

C

C

C

VO1

VO2

BYPASS

IN2–

IN1–

C

B

R

F

R

F

R

I

R

I

C

I

C

I

R

L

Stereo Audio

Input

Mute

Control

From System

Control

C

B

V

DD

4

3

2

1

8

6

5

Depop

Circuitry

–

–
+

+

R

C

R

C

Copyright  2000, Texas Instruments Incorporated

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.

1
2
3
4

8
7
6
5

VO1

MUTE

BYPASS

IN2–

IN1–
GND
V

DD

VO2

D PACKAGE

(TOP VIEW)

TPA152
75-mW STEREO AUDIO POWER AMPLIFIER

SLOS210A – JUNE 1998 – REVISED MARCH 2000

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

AVAILABLE OPTIONS

PACKAGED DEVICE

T

A

SMALL OUTLINE

–40°C to 85°C TPA152D

†

†

The D packages are available taped and reeled. T o
order a taped and reeled part, add the suffix R
(e.g., TPA152DR)

Terminal Functions

TERMINAL

NAME NO.

I/O

DESCRIPTION

BYPASS 3 BYPASS is the tap to the voltage divider for internal mid-supply bias. This terminal should be connected to a 0.1-µF

to 1-µF capacitor.
GND 7 GND is the ground connection.
IN1– 8 I IN1– is the inverting input for channel 1.
IN2– 4 I IN2– is the inverting input for channel 2.
MUTE 2 I A logic high puts the device into MUTE mode.
V

DD

6 I VDD is the supply voltage terminal.
VO1 1 O VO1 is the audio output for channel 1.
VO2 5 O VO2 is the audio output for channel 1.

TPA152

75-mW STEREO AUDIO POWER AMPLIFIER

SLOS210A – JUNE 1998 – REVISED MARCH 2000

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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 junction temperature range, T

J

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

Operating case temperature range, TC –40°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

stg

–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 724 mW 5.8 mW/°C 464 mW 376 mW

recommended operating conditions

MIN MAX UNIT

Supply voltage, V

DD

4.5 5.5 V

Operating free-air temperature, T

A

–40 85 °C

dc electrical characteristics at TA = 25°C, VDD = 5 V

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V

OO

Output offset voltage 10 mV
Supply ripple rejection ratio VDD = 4.9 V to 5.1 V 81 dB

I

DD

Supply current See Figure 13 5.5 14 mA

I

DD(MUTE)

Supply current in MUTE 5.5 14 mA

Z

I

Input impedance >1 MΩ

ac operating characteristics VDD = 5 V, TA = 25°C, RL = 32 Ω (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

P

O

Output power (each channel) THD ≤ 0.03%, Gain = 1, See Figure 1 75

†

mW

THD+N Total harmonic distortion plus noise

PO = 75 mW, 20 Hz–20 kHz, Gain = 1,
See Figure 2

0.2%

B

OM

Maximum output power bandwidth AV = 5, THD <0.6%, See Figure 2 >20 kHz
Phase margin Open loop, See Figure 16 80°
Supply ripple rejection ratio 1 kHz, CB = 1 µF, See Figure 12 65 dB
Mute attenuation See Figure 15 110 dB
Ch/Ch output separation See Figure 13 102 dB
Signal-to-Noise ratio VO = 1 V

(rms)

, Gain = 1 See Figure 11 104 dB

V

n

Noise output voltage See Figure 10 6 µV(rms)

†

Measured at 1 kHz.

NOTES: 1. The dc output voltage is approximately VDD/2.

2. Output power is measured at the output pins of the IC at 1 kHz.

TPA152
75-mW STEREO AUDIO POWER AMPLIFIER

SLOS210A – JUNE 1998 – REVISED MARCH 2000

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ac operating characteristics VDD = 5 V, TA = 25°C, RL = 10 kΩ

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

p

VI = 1 V

(rms)

, 20 Hz–20 kHz,Gain = 1,

See Figure 6

0.005%

THD+N

Total harmonic distortion plus noise

V

O(PP)

= 4 V, 20 Hz–20 kHz, Gain = 1,

See Figure 8

0.005%

B

OM

Maximum output power bandwidth G = 5, THD <0.02%, See Figure 6 >20 kHz
Phase margin Open loop, See Figure 16 80°

k

SVR

Supply voltage rejection ratio 1 kHz, CB = 1 µF, See Figure 12 65 dB
Mute attenuation See Figure 15 110 dB
Ch/Ch output separation See Figure 13 102 dB
Signal-to-Noise ratio VO = 1 V

(rms)

, Gain = 1, See Figure 11 104 dB

V

n

Noise output voltage See Figure 10 6 µV(rms)

†

Measured at 1 kHz.

TYPICAL CHARACTERISTICS

Table of Graphs

FIGURE

THD+N Total harmonic distortion plus noise vs Output power 1, 4
THD+N Total harmonic distortion plus noise vs Frequency 2, 3, 6, 8, 9
THD+N Total harmonic distortion plus noise vs Output voltage 5, 7
V

n

Output noise voltage vs Frequency 10

SNR Signal-to-noise ratio vs Gain 11

Supply ripple rejection ratio vs Frequency 12
Crosstalk vs Frequency 13, 14
Mute Attenuation vs Frequency 15
Open-loop gain and phase vs Frequency 16, 17
Closed-loop gain and phase vs Frequency 18

I

DD

Supply current vs Supply voltage 19

P

O

Output power vs Load resistance 20

P

D

Power dissipation vs Output power 21

TPA152

75-mW STEREO AUDIO POWER AMPLIFIER

SLOS210A – JUNE 1998 – REVISED MARCH 2000

5

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TYPICAL CHARACTERISTICS

Figure 1

TOTAL HARMONIC DISTORTION PLUS NOISE

vs

OUTPUT POWER

PO – Output Power – mW

1102030 60705040

80

0.1

0.01

0.001

1

2

90

f = 1 kHz
AV = –1 V/V

THD+N –Total Harmonic Distortion + Noise – %

Figure 2

TOTAL HARMONIC DISTORTION PLUS NOISE

vs

FREQUENCY

PO = 75 mW
RL = 32 Ω

AV =– 2 V/V

AV = –5 V/V

AV = –1 V/V

0.1

0.01

0.001

1

2

THD+N –Total Harmonic Distortion + Noise – %

f – Frequency – Hz

20 100 1k 10k 20k

Figure 3

TOTAL HARMONIC DISTORTION PLUS NOISE

vs

FREQUENCY

AV = –1 V/V
RL = 32 Ω

0.1

0.01

0.001

0.3

THD+N –Total Harmonic Distortion + Noise – %

f – Frequency – Hz

20 100 1k 10k 20k

PO = 75 mW

PO = 25 mW

PO = 50 mW

Figure 4

TOTAL HARMONIC DISTORTION PLUS NOISE

vs

OUTPUT POWER

0.1

0.01

0.001

1

2

THD+N –Total Harmonic Distortion + Noise – %

0.1 1 10 100

RL = 32 Ω

20 kHz

1 kHz

20 Hz

PO – Output Power – mW