Sanyo LA2902V Specifications

Ordering number : ENN7140

O3001TN (OT) No. 7140-1/5

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)

1

7.6

7.8

0.5

5.6

0.1

1.5max

24

0.65

0.22

(0.33)

0.15

(1.3)

SANYO: SSOP24 (275 mil)

[LA2902V]

LA2902V

SANYO Electric Co.,Ltd. Semiconductor Company

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

Four-Channel High-Output Line Amplifier

for Car Audio Systems

Monolithic Linear IC

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.

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

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

Specifications

Maximum Ratings at Ta = 25°C

No. 7140-2/5

LA2902V

Parameter Symbol Conditions

Ratings

Unit

min typ max

Quiescent current I

CCO

Rg = 0 10 16 22 mA

Voltage gain V

G

VO= 0 dBm 11.5 12 12.5 dB

Output voltage V

O

THD = 0.1% 5.0 5.3 Vrms

Total harmonic distortion THD V

O

= 3 Vrms, LPF = 80 kHz 0.004 0.01 %

Output noise voltage V

NO

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 CH

sep

Rg = 10 kΩ, VO= 1 Vrms 60 70 dB

Input resistance Ri 21 30 39 kΩ

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

Parameter Symbol Conditions Ratings Unit

Recommended operating voltage V

CC

9 V

Allowable operating supply voltage range V

CCOP

6 to 12 V

Recommended load resistance RL

OP

10 kΩ

Recommended Operating Conditions at Ta = 25°C

Pin Assignment

10 11 12

15 14 13

9

16

8

17

7

18

6

19

5

20

4

21

3

22

2

23

1

24

ILA00938

LF IN+

N.C

LF IN--

LR IN--

LR IN+

DC L

DC R

RF IN+

RF IN--

N.C

RR IN+

RR IN--

LR OUT

LF OUT

L GND

LIFT L VD

LIFT L OUT

V

CC

L

V

CC

R

LIFT R OUT

LIFT R VD

R GND

RF OUT

RR OUT

Top view

LA2902V