Sanyo LA2902V Specifications

Ordering number : ENN7140

Monolithic Linear IC

LA2902V

Four-Channel High-Output Line Amplifier

for Car Audio Systems

Overview

The LA2902V is a high output level 4-channel line amplifier designed for car audio systems. This line amplifier provides an output signal with a significantly higher amplitude than the output signal provided by earlier preamplifiers. This higher amplitude significantly improves the signal-to-noise ratio in the connection from the main unit to the external power amplifier, and results in improved power amplifier performance.

The LA2902V also significantly reduces the required mounting area by cutting in half the number of external capacitors required for boosting the signal-system supply voltage and is available in SSOP miniature package.

Functions and Features

•High output level (5.3 Vrms)

•Low output noise voltage (17 µV)

•Low total harmonic distortion (0.004%)

•High ripple rejection ratio (65 dB)

•Fewer external parts required

•Excellent audio fidelity

Package Dimensions

unit: mm

3175B-SSOP24 (275 mil)

[LA2902V]

7.8

24

		5.6		7.6
	1			0.5
				0.15
(0.33)	0.65	0.22
			1.5max
		(1.3)
		0.1

SANYO: SSOP24 (275 mil)

Specifications

Maximum Ratings at Ta = 25°C

	Parameter	Symbol	Conditions	Ratings	Unit
	Maximum supply voltage	VCC max	With no input signal	13	V
	Allowable power dissipation	Pd max	Ta ≤ 85°C, Mounted on a printed circuit board	400	mW
			(114.3 × 76.1 × 1.6 mm3, glass epoxy)
	Operating temperature	Topr		–40 to +85	°C
	Storage temperature	Tstg		–40 to +150	°C

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

O3001TN (OT) No. 7140-1/5

LA2902V

Recommended Operating Conditions at Ta = 25°C

Parameter	Symbol	Conditions	Ratings	Unit
Recommended operating voltage	VCC		9	V
Allowable operating supply voltage range	VCCOP		6 to 12	V
Recommended load resistance	RLOP		10	kΩ

Electrical Characteristics at Ta = 25°C, VCC = 9 V, RL = 10 kΩ , f = 1 kHz, Rg = 600Ω

	Parameter	Symbol	Conditions		Ratings		Unit
				min	typ	max
	Quiescent current	ICCO	Rg = 0	10	16	22	mA
	Voltage gain	VG	VO = 0 dBm	11.5	12	12.5	dB
	Output voltage	VO	THD = 0.1%	5.0	5.3		Vrms
	Total harmonic distortion	THD	VO = 3 Vrms, LPF = 80 kHz		0.004	0.01	%
	Output noise voltage	VNO	Rg = 0, BPF = 20 Hz to 20 kHz		17	24	µVrms
	Ripple rejection ratio	SVRR	Rg = 0, fr = 100 Hz, Vr = 100 mVrms,	55	65		dB
			BPF = 20 Hz to 20 kHz
	Channel separation	CHsep	Rg = 10 kΩ , VO = 1 Vrms	60	70		dB
	Input resistance	Ri		21	30	39	kΩ

Pin Assignment

	OUTLF		OUTLR		GNDL		LIFTL VD		LIFTL OUT		V		V		LIFTR OUT		LIFTR VD		GNDR		RFOUT		RROUT
											L		R
											CC		CC
	24		23		22		21		20		19		18		17		16		15		14		13

LA2902V

	1		2		3		4		5		6		7		8		9		10		11		12
	LF IN--		LF IN+		N.C		LR IN--		LR IN+		DC L		DC R		RF IN+		RF IN--		N.C		RR IN+		RR IN--

Top view

ILA00938

No. 7140-2/5