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Número de pieza | LA4183 | |
Descripción | 2.3 W 2-Channel AF Power Amplifier for Radio Cassette Players | |
Fabricantes | Sanyo Semicon Device | |
Logotipo | ||
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Monolithic Linear IC
LA4183
2.3 W 2-Channel AF Power Amplifier for Radio
Cassette Players
Features
. Built-in 2 channels enabling use in stereo and bridge
. amplifier (BTL) applications.
High-output:
2.3 W typ./channel, VCC = 9 V, RL = 4 Ω
4.7 W typ./bridge amplifier, VCC = 9 V, RL = 8 Ω
. Low switching distortion at high frequencies.
. Minimum number of external parts required: 9 pcs. min.
. (Stereo/bridge).
Small shock noise at the time of power supply ON/OFF due
to built-in muting circuit.
. Good ripple rejection due to built-in ripple filter.
. Soft tone at the time of output saturation.
. Good channel separation.
. Voltage gain fixed at 45 dB (Bridge: 51 dB).
Variable voltage gain available with external resistor added.
Package Dimensions
unit : mm
3022A-DIP12F
[LA4183]
SANYO : DIP12F
Specifications
Note:
In general applications, heat generated in the DIP 12-pin
package can be radiated through the Cu-foiled area of the
printed circuit board, but since power dissipation Pd may be
increased depending on the supply voltage and load conditions,
it is recommended to use a fin additionally.
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Symbol
VCC max
Allowable power dissipation
Operating temperature
Storage temperature
Pd max
Topr
Tstg
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Load resistance
Symbol
VCC
RL
Conditions
With signal
Quiescent
With printed circuit board
(Refer to Pd – Ta characteristics)
Stereo
Bridge
Conditions
Ratings
11
15
4
–20 to +75
–55 to +150
Unit
V
V
W
°C
°C
Ratings
9.0
4.0 to 8.0
8.0
Unit
V
Ω
Ω
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
53096HA(II)/O0207TA/2022KI,TS,ID No.887-1/11
1 page LA4183
The output of ch1 is divided with R5, R6 and led to pin 1 and then inputted to ch2. Since the attenuation degree (R5/R6) of ch1
output and the amplification degree (R4/R2 + R6)) of ch2 are fixed at an equal value, the ch2 output is in opposite phase with the
ch1 output. Therefore, the total voltage gain gets apparently 6 dB higher than the voltage gain of ch1 alone and is determined by
the following equation.
VG = 20 log R3 + 6 [dB]
R1
If the IC is used at a voltage gain less than this, the following equation with Rf added applies.
R3
VG = 20 log R1 + Rf
2. Starting time
+ 6 [dB]
Starting time depends on capacitance of C1 (C2) and C9 as shown in the diagram below. That is because of using a muting circuit
utilizing the C9 (decoupling capacitor) time constant for pop noise prevention when power is turned on and charging circuits for
C1 and C2 (NF capacitors).
Dependence on C9
Quiescent
Quiescent
Dependence on C1 (C2)
3. Crosstalk
Channel separation characteristic is important for single-package IC embodying two channels.
With LA4183, good channel separation is obtainable even as is, but if the BTL OUT pin (pin 1) is not grounded, it will invite
imbalance in crosstalk between the two channels. (Refer to the characteristics diagram.)
No.887-5/11
5 Page f response
LA4183
THD – PO
Frequency, f – Hz
THD – f
Output power, PO – W
Pd – PO
Using specified fin
Frequency, f – Hz
ICC – PO
Output power, PO – W
PO – VCC
Output power, PO – W
Supply voltage, VCC – V
No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment,
nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or
indirectly cause injury, death or property loss.
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors
and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and
expenses associated with such use:
2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO
ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume
production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use
or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of May, 1996. Specifications and information herein are subject to change without notice.
No.887-11/11
11 Page |
Páginas | Total 11 Páginas | |
PDF Descargar | [ Datasheet LA4183.PDF ] |
Número de pieza | Descripción | Fabricantes |
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LA4182 | (LA4180 / LA4182) 1 ~ 2.3W 2-Channel AF | Sanyo |
LA4183 | 2.3 W 2-Channel AF Power Amplifier for Radio Cassette Players | Sanyo Semicon Device |
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