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PDF LA4168M Data sheet ( Hoja de datos )
| Número de pieza | LA4168M | |
| Descripción | Record/Playback System for Microcassette and Compact Cassette Recorders | |
| Fabricantes | Sanyo Semicon Device | |
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Ordering number : EN5660
Monolithic Linear IC
LA4168M
Record/Playback System for Microcassette and
Compact Cassette Recorders
Overview
The LA4168M is a record/playback system IC for
microcassette and compact cassette recorders. The
LA4168M is an extremely high-functionality IC that
includes a motor control governor circuit, a voice sensor
circuit that detects sounds and turns motor on or off, a
power switch control circuit that receives an electrical
signal from a photosensor and turns all of the IC function
blocks on or off, and a circuit that increases the speed of
the motor during playback.
Functions
• Microphone and playback preamplifiers
• Record amplifier
• Power amplifier (BTL, 4 Ω)
• Automatic stop circuit (power switch)
• Governor circuit
• Motor speed and high-speed switching circuit
• Microphone power supply
• LED drive circuit
• Voice sensor circuit
Features
• Includes a voice switch that can turn the governor on or
off.
• Includes a power switch circuit that can turn all the IC
function blocks on or off from a photosensor signal.
During record, the IC can automatically turn the
governor on or off according to the microphone input
level, and furthermore, the governor on/off level can be
continuously adjusted from an external control knob.
(The control used for volume adjustment during
playback.)
• Continuously variable microphone monitor level.
• Includes a drive pin for an LED that lights only when
the governor is on in record mode.
Package Dimensions
unit: mm
3073A-MFP30SD
[LA4168M]
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Maximum supply voltage
Allowable power dissipation
Operating temperature
VCC max
Pd max
Topr
Storage temperature
Tstg
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Operating voltage range
(power block)
Load resistance
(preamplifier block)
Symbol
VCC
VCCop
RLpwr
RLpre
Conditions
Conditions
SANYO: MFP30SD
Ratings
4.5
800
–10 to +50
–55 to +150
Unit
V
mW
°C
°C
Ratings
3.0
1.8 to 3.6
4
10
Unit
V
V
Ω
kΩ
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
73097HA(OT) No. 5660-1/6
1 page  
Sample Application Circuit
LA4168M
For the record/playback switch described above, during playback the power supply ripple may be output from the REC OUT pin (pin 4) and influence the
EQIN pin (pin 29). This problem can be minimized by adding a 5.6-kΩ resistor between pin 4 and pin 27.
No. 5660-5/6
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet LA4168M.PDF ] | |
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