SANYO LA2900M Datasheet
Ordering number : ENN6950A
N1501TN (OT)/51101RM (OT) No. 6950-1/5
Overview
The LA2900M is a 2-channel high-output line amplifier
IC developed for use in car audio systems. It can provide
significant improvements in the signal-to-noise ratio when
used to drive an external power amplifier due to its
significantly increased output voltage as compared to that
of earlier preamplifiers.
The high output of the LA2900M allows it to achieve a
high signal-to-noise ratio and excellent fidelity in audio
systems in which the main unit is connected to an external
amplifier, and can improve the performance of the power
amplifier in such systems.
Functions and Features
• High output level (5.3 V rms)
• Low output noise voltage (12 µV)
• Low total harmonic distortion (0.003%)
• High ripple rejection ratio (70 dB)
• Excellent audio fidelity
Package Dimensions
unit: mm
3036C-MFP20
1
20
10
11
12.5
0.15
1.27
0.35
(0.4)
1.7max
(1.5)
0.1
5.4
0.63
7.6
SANYO: MFP20 (300mil)
[LA2900M]
LA2900M
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Two-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 12 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. 6950-2/5
LA2900M
Parameter Symbol Conditions
Ratings
Unit
min typ max
Quiescent current I
CCO
Rg = 0 7 11 15 mA
Voltage gain V
G
VO= 0 dBm 7.5 8 8.5 dB
Output voltage V
O
THD = 0.1% 5.0 5.3 Vrms
Total harmonic distortion THD V
O
= 3 Vrms, LPF = 80 kHz 0.003 0.01 %
Output noise voltage V
NO
Rg = 0, BPF = 20 Hz to 20 kHz 12 17 µVrms
Ripple rejection ratio SVRR
Rg = 0, f
R
= 1 kHz, V
CCR
= 100 mV,
60 70 dB
BPF = 20 Hz to 20 kHz
Channel separation CH
sep
Rg = 10 kΩ, VO= 1 Vrms 60 70 dB
Input resistance Ri 20 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
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