Texas Instruments TPA112EVM, TPA112MSOPEVM, TPA112DR, TPA112DGNR, TPA112D Datasheet

TPA112 150-mW STEREO AUDIO POWER AMPLIFIER

SLOS212C ± AUGUST 1998 ± REVISED MARCH 2000

D D

D D

150-mW Stereo Output	D OR DGN PACKAGE
Wide Range of Supply Voltages				(TOP VIEW)
± Fully Specified for 3.3 V and 5 V	VO1			1	8					VDD
Operation
	IN1±			2	7					VO2
± Operational From 2.5 V to 5.5 V
Thermal and Short-Circuit Protection	IN1+			3	6					IN2±
	GND			4	5					IN2+

Surface Mount Packaging

±PowerPAD MSOP

±SOIC

DStandard Operational Amplifier Pinout

description

The TPA112 is a stereo audio power amplifier packaged in an 8-pin PowerPAD MSOP package capable of delivering 150 mW of continuous RMS power per channel into 8-Ω loads. 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.

THD+N when driving an 8-Ω load from 5 V is 0.1% at 1 kHz, and less than 2% across the audio band of 20 Hz to 20 kHz. For 32-Ω loads, the THD+N is reduced to less than 0.06% at 1 kHz, and is less than 1% across the audio band of 20 Hz to 20 kHz. For 10-kΩ loads, the THD+N performance is 0.01% at 1 kHz, and less than 0.02% across the audio band of 20 Hz to 20 kHz.

functional block diagram
			RF
			VDD			8
			Short-Circuit			VDD
CI			Protection
	RI
LIN±
CI		2	IN1±				CC
	RI		VO1			1
LIN+		3	IN1+
						RO	RC
		RF
	VDD/2
CI	RI	RF	IN2±				CC
RIN±		6			2	7
			V	O
			IN2+
CI		5
	RI					RO	RC
RIN+
			Over-Temperature			4
			Protection
			RF

To Headphone

Jack

(See TPA152)

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

TPA112

150-mW STEREO AUDIO POWER AMPLIFIER

SLOS212C ± AUGUST 1998 ± REVISED MARCH 2000

AVAILABLE OPTIONS

		PACKAGED DEVICES		MSOP
	TA	SMALL OUTLINE²	MSOP²
				Symbolization
		(D)	(DGN)
	± 40°C to 85°C	TPA112D	TPA112DGN	TI AAD

²The D and DGN package is available in left-ended tape and reel only (e.g., TPA112DR, TPA112DGNR).

				Terminal Functions
	TERMINAL		I/O	DESCRIPTION
	NAME	NO.
	GND	4	I	GND is the ground connection.
	IN1±	2	I	IN1± is the inverting input for channel 1.
	IN1+	3	I	IN1+ is the noninverting input for channel 1.
	IN2±	6	I	IN2± is the inverting input for channel 2.
	IN2+	5	I	IN2+ is the noninverting input for channel 2.
	VDD	8	I	VDD is the supply voltage terminal.
	VO1	1	O	VO1 is the audio output for channel 1.
	VO2	7	O	VO2 is the audio output for channel 2.

absolute maximum ratings over operating free-air temperature (unless otherwise noted)²

Supply voltage, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . . . 6	V
Differential input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	±0.3 V to VDD + 0.3	V
Input current, II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . ±2.5 A
Output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . ±250 mA
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . internally limited
Operating junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . ±40°C to 150°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . ±65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . 260°C

²Stresses beyond those listed under ªabsolute maximum ratingsº 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 ªrecommended operating conditionsº 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
		POWER RATING	ABOVE TA = 25°C	POWER RATING	POWER RATING
	D	725 mW	5.8 mW/°C	464 mW	377 mW
	DGN	2.14 W³	17.1 mW/°C	1.37 W	1.11 W

³Please see the Texas Instruments document, PowerPAD Thermally Enhanced Package Application Report

(literature number SLMA002), for more information on the PowerPAD package. The thermal data was measured on a PCB layout based on the information in the section entitled Texas Instruments Recommended Board for PowerPAD on page 33 of the before mentioned document.

recommended operating conditions

	MIN	MAX	UNIT
Supply voltage, VDD	2.5	5.5	V
Operating free-air temperature, TA	±40	85	°C

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TPA112 150-mW STEREO AUDIO POWER AMPLIFIER

SLOS212C ± AUGUST 1998 ± REVISED MARCH 2000

dc electrical characteristics at TA = 25°C, VDD = 3.3 V

	PARAMETER	TEST CONDITIONS	MIN TYP	MAX	UNIT
VIO	Input offset voltage			5	mV
PSRR	Power supply rejection ratio	VDD = 3.2 V to 3.4 V	83		dB
IDD(q)	Supply current		1.5	3	mA
IDD(SD)	Supply current in SHUTDOWN mode		10	50	µA
ZI	Input impedance		> 1		MΩ

ac operating characteristics, VDD = 3.3 V, TA = 25°C, RL = 8 Ω

	PARAMETER	TEST CONDITIONS		MIN TYP	MAX	UNIT
PO	Output power (each channel)	THD ≤ 0.1%		70²		mW
THD+N	Total harmonic distortion + noise	PO = 70 mW,	20±20 kHz	2%
BOM	Maximum output power BW	G = 10,	THD <5%	>20		kHz
	Phase margin	Open loop		58°
SVRR	Supply ripple rejection	f = 1 kHz		68		dB
	Channel/channel output separation	f = 1 kHz		86		dB
SNR	Signal-to-noise ratio	PO = 100 mW		100		dB
Vn	Noise output voltage			9.5		µV(rms)

² Measured at 1 kHz

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

	PARAMETER	TEST CONDITIONS	MIN TYP	MAX	UNIT
VIO	Input offset voltage			5	mV
PSRR	Power supply rejection ratio	VDD = 4.9 V to 5.1 V	76		dB
IDD(q)	Supply current		1.5	3	mA
IDD(SD)	Supply current in SHUTDOWN mode		60	100	µA
ZI	Input impedance		> 1		MΩ

ac operating characteristics, VDD = 5 V, TA = 25°C, RL = 8 Ω

	PARAMETER	TEST CONDITIONS		MIN TYP	MAX	UNIT
PO	Output power (each channel)	THD ≤ 0.1%		70²		mW
THD+N	Total harmonic distortion + noise	PO = 150 mW,	20±20 kHz	2%
BOM	Maximum output power BW	G = 10,	THD <5%	>20		kHz
	Phase margin	Open loop		56°
SVRR	Supply ripple rejection	f = 1 kHz		68		dB
	Channel/channel output separation	f = 1 kHz		86		dB
SNR	Signal-to-noise ratio	PO = 150 mW		100		dB
Vn	Noise output voltage			9.5		µV(rms)

² Measured at 1 kHz

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3

TPA112

150-mW STEREO AUDIO POWER AMPLIFIER

SLOS212C ± AUGUST 1998 ± REVISED MARCH 2000

ac operating characteristics, VDD = 3.3 V, TA = 25°C, RL = 32 Ω

	PARAMETER	TEST CONDITIONS		MIN TYP	MAX	UNIT
P	Output power (each channel)	THD ≤ 0.1%		40²		mW
O
THD+N	Total harmonic distortion + noise	PO = 30 mW,	20±20 kHz	0.5%
BOM	Maximum output power BW	G = 10,	THD <2%	>20		kHz
	Phase margin	Open loop		58°
SVRR	Supply ripple rejection	f = 1 kHz		68		dB
	Channel/channel output separation	f = 1 kHz		86		dB
SNR	Signal-to-noise ratio	PO = 100 mW		100		dB
Vn	Noise output voltage			9.5		V(rms)

² Measured at 1 kHz

ac operating characteristics, VDD = 5 V, TA = 25°C, RL = 32 Ω

	PARAMETER	TEST CONDITIONS		MIN TYP	MAX	UNIT
PO	Output power (each channel)	THD ≤ 0.1%		40²		mW
THD+N	Total harmonic distortion + noise	PO = 60 mW,	20±20 kHz	0.4%
BOM	Maximum output power BW	G = 10,	THD <2%	>20		kHz
	Phase margin	Open loop		56°
SVRR	Supply ripple rejection	f = 1 kHz		68		dB
	Channel/channel output separation	f = 1 kHz		86		dB
SNR	Signal-to-noise ratio	PO = 150 mW		100		dB
Vn	Noise output voltage			9.5		V(rms)

² Measured at 1 kHz

4	POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

TPA112 150-mW STEREO AUDIO POWER AMPLIFIER

				SLOS212C ± AUGUST 1998 ± REVISED MARCH 2000
		TYPICAL CHARACTERISTICS
		Table of Graphs
					FIGURE
					1, 2, 4, 5, 7, 8,
THD+N	Total harmonic distortion plus noise		vs Frequency		10, 11, 13, 14,
					16, 17, 34, 36
			vs Power output		3, 6, 9,
					12, 15, 18
PSSR	Power supply rejection ratio		vs Frequency		19, 20
Vn	Output noise voltage		vs Frequency		21, 22
	Crosstalk		vs Frequency		23 ± 26,
					37, 38
	Mute attenuation		vs Frequency		27, 28
	Open-loop gain		vs Frequency		29, 30
	Phase margin		vs Frequency		29, 30
	Phase		vs Frequency		39 ± 44
	Output power		vs Load resistance		31, 32
ICC	Supply current		vs Supply voltage		33
SNR	Signal-to-noise ratio		vs Voltage gain		35
	Closed-loop gain		vs Frequency		39 ± 44
	Power dissipation/amplifier		vs Output power		45, 46

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5

TPA112

150-mW STEREO AUDIO POWER AMPLIFIER

SLOS212C ± AUGUST 1998 ± REVISED MARCH 2000

TYPICAL CHARACTERISTICS

TOTAL HARMONIC DISTORTION PLUS NOISE

			vs
			FREQUENCY
%	10
		VDD = 3.3 V
±		PO = 30 mW
+ Noise
		CB = 1 µ F
	1	RL = 32 Ω
			AV = 5
Distortion
		AV = 10
Harmonic	0.1
THD+N ±Total	0.01		AV = 1
	0.001
	20	100	1k	10k	20k
			f ± Frequency ± Hz

Figure 1

TOTAL HARMONIC DISTORTION PLUS NOISE

			vs
			FREQUENCY
%	10	VDD = 3.3 V
±		AV = 1 V/V
+ Noise
		RL = 32 Ω
	1	CB = 1 µ F
Distortion		PO = 15 mW
Harmonic	0.1
		PO = 10 mW
±Total	0.01
THD+N		PO = 30 mW
	0.001
	20	100	1k	10k	20k
			f ± Frequency ± Hz

Figure 2

TOTAL HARMONIC DISTORTION PLUS NOISE	TOTAL HARMONIC DISTORTION PLUS NOISE
vs	vs
OUTPUT POWER	FREQUENCY

%	10	VDD = 3.3 V	%	10
				V		= 5 V
±		RL = 32 Ω	±	DD
				P	= 60 mW
Noise+		AV = 1 V/V	Noise+	O	= 32 Ω
				1
				RL
		CB = 1 µF		CB = 1 µF
Distortion		20 kHz	Distortion
	1	10 kHz					AV = 10 mW
Harmonic	0.1		Harmonic	0.1		AV = 5 mW
±Total		1 kHz	±Total
		20 Hz		0.01
THD+N			THD+N
						AV = 1 mW
	0.01			0.001
	1	10	50	20		100	1k	10k	20k
		PO ± Output Power ± mW					f ± Frequency ± Hz

Figure 3

Figure 4

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TPA112 150-mW STEREO AUDIO POWER AMPLIFIER

SLOS212C ± AUGUST 1998 ± REVISED MARCH 2000

TYPICAL CHARACTERISTICS

TOTAL HARMONIC DISTORTION PLUS NOISE

TOTAL HARMONIC DISTORTION PLUS NOISE

			vs						vs
			FREQUENCY						OUTPUT POWER
± %	10	VDD = 5 V				10
					± %	V		= 5 V
		RL = 32 Ω				DD
						A	= 1 V/V
Noise		CB = 1 µF			Noise	V
						CB = 1 µF
		AV = 1 V/V				RL = 32			Ω
+	1				+				20 kHz
Distortion					Distortion
						1
									10 kHz
Harmonic	0.1	PO = 30 mW			Harmonic
		PO = 15 mW				0.1
±Total					±Total
	0.01								1 kHz
THD+N					THD+N				20 Hz
		PO = 60 mW
	0.001					0.01
	20	100	1k	10k	20k	0.002			0.01	0.1	0.2
			f ± Frequency ± Hz						PO ± Output Power ± W

Figure 5	Figure 6
TOTAL HARMONIC DISTORTION PLUS NOISE	TOTAL HARMONIC DISTORTION PLUS NOISE

vs

vs

FREQUENCY

FREQUENCY

± %

10

VDD = 3.3 V

10

± %

V

= 3.3 V

RL = 10 kΩ

DD

1

RL = 10 kΩ

Noise+

PO = 100 µF

Noise+

1

A

= 1 V/V

CB = 1 µF

V

CB = 1 µF

Distortion

AV = 5 mW

Distortion

Harmonic

0.1

Harmonic

0.1

±Total

±Total

PO = 45 µW

0.01

0.01

THD+N

THD+N

AV = 2 mW

P

O

= 90 µW

PO = 130 µW

0.001

0.001

20

100

1k

10k

20k

20

100

1k

10k

20k

f ± Frequency ± Hz

f ± Frequency ± Hz

Figure 7

Figure 8

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7

TPA112

150-mW STEREO AUDIO POWER AMPLIFIER

SLOS212C ± AUGUST 1998 ± REVISED MARCH 2000

TYPICAL CHARACTERISTICS

THD+N ±Total Harmonic Distortion + Noise ± %

TOTAL HARMONIC DISTORTION PLUS NOISE vs

OUTPUT POWER

10

VDD = 3.3 V

RL = 10 k Ω

AV = 1 V/V

CB = 1 µF

1

0.1

20 Hz

10 kHz

0.01

20 Hz

1 kHz

0.001

5

10

100

200

PO ± Output Power ± µW

Figure 9

TOTAL HARMONIC DISTORTION PLUS NOISE

			vs
			FREQUENCY
%	10	VDD = 5 V
±		RL = 10 kΩ
+ Noise
		PO = 300 µW
	1	CB = 1 µF
Distortion
Harmonic	0.1		AV = 5
			AV = 1
±Total	0.01
THD+N			AV = 2
	0.001
	20	100	1k	10k	20k
			f ± Frequency ± Hz

Figure 10

TOTAL HARMONIC DISTORTION PLUS NOISE

TOTAL HARMONIC DISTORTION PLUS NOISE

			vs					vs
			FREQUENCY					OUTPUT POWER
%	10	VDD = 5 V				10
					%		V = 5 V
±		RL = 10 kΩ			±		DD
							RL = 10 kΩ
Noise+	1				Noise+	1
		CB = 1 µF					CB = 1 µ F
		AV = 1 V/V					A = 1 V/V
							V
Distortion			PO = 300 µW		Distortion
Harmonic	0.1		PO	= 200 µW	Harmonic	0.1
								20 Hz
±Total					±Total			20 kHz
	0.01					0.01
THD+N					THD+N
		PO = 100 µW						10 kHz	1 kHz
	0.001					0.001
	20	100	1k	10k	20k	5	10	100	500
			f ± Frequency ± Hz					PO ± Output Power ± µW
			Figure 11					Figure 12

8	POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

TPA112 150-mW STEREO AUDIO POWER AMPLIFIER

SLOS212C ± AUGUST 1998 ± REVISED MARCH 2000

TYPICAL CHARACTERISTICS

TOTAL HARMONIC DISTORTION PLUS NOISE

TOTAL HARMONIC DISTORTION PLUS NOISE

vs

vs

± %

2

FREQUENCY

FREQUENCY

10

VDD = 3.3 V

DistortionHarmonicTotal± Plus Noise

1

DistortionHarmonic±Total+ Noise ± %

VDD = 3.3 V

PO = 75 mW

RL = 8 Ω

RL = 8 Ω

A

= 5

A

= 1 V/V

V

CB = 1 µF

V

PO = 30 mW

1

0.1

AV = 2

AV = 1

PO = 15 mW

0.1

0.01

THD+N

THD+N

0.01

PO = 75 mW

0.001

100

1k

10k

20k

0.001

20

20

100

1k

10k

20k

f ± Frequency ± Hz

f ± Frequency ± Hz

Figure 13

Figure 14

TOTAL HARMONIC DISTORTION PLUS NOISE vs

OUTPUT POWER

%	10
	VDD = 3.3 V
±
	RL = 8	Ω
+ Noise
	AV = 1 V/V		20 kHz
			10 kHz
Distortion
	1
Harmonic			1 kHz
	0.1
±Total			20 Hz
THD+N	0.01
	10m		0.1	0.3
			PO ± Output Power ± W

Figure 15

TOTAL HARMONIC DISTORTION PLUS NOISE

			vs
%	2		FREQUENCY
±		VDD = 5 V	AV = 2
Noise	1
		PO = 100 mW
		RL = 8 Ω	AV = 5
Plus
		CB = 1 µF
Distortion	0.1
			AV = 1
Harmonic
	0.01
THD+N ± Total
	0.001
	20	100	1k	10k	20k
			f ± Frequency ± Hz

Figure 16

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9