Monolithic Linear LA7289 Audio Signal Record Playback Proces

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Monolithic Linear LA7289 Audio Signal Record Playback Proces

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Ordering number EN5642
Monolithic Linear
LA7289
Audio Signal Record Playback Processor
Overview
LA7289 includes chip functions required record playback audio signals achieves complete adjustment-free operation adoption automatic record bias current adjustment circuit. addition, inclusion switching circuit switching between tuner line input addition circuits provided earlier makes LA7289 truly optimal audio products.
Features
Adjustment-free record bias current (automatic adjustment circuit adopted) Built-in record bias oscillator circuit power supply switch Record equalizer choke coil longer required Playback amplifier input noise voltage: Value detector capacitor reduced Built-in high-voltage head switching circuit Supply voltage: supports both 12-V operation Built-in input switching circuit (for line tuner inputs)
Functions
Equalizer amplifier Ripple filter Record/playback switching circuit Muting SP/LP/EP switching circuit Record amplifier Tape head switching circuit Automatic record bias adjustment circuit Input switching circuit (line/tuner)
Package Dimensions
unit: 3067-DIP24S
[LA7289]
SANYO: DIP24S
Specifications
Maximum Ratings 25°C
Parameter Maximum supply voltage input voltage input current Allowable power dissipation Operating temperature Storage temperature Symbol VIN2 IIN2 Topr Tstg Conditions Ratings ±1.5 +150 Unit Vp-p
Operating Conditions 25°C
Parameter Recommended supply voltage Allowable operating voltage range Symbol VCCop Conditions Ratings 12.5 Unit
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, Chome, Ueno, Taito-ku, TOKYO, JAPAN
43097HA(OT) 5642-1/11
LA7289 Electrical Characteristics 25°C, kHz, Vrms
Parameter Current drain (EE) Current drain (playback) Current drain (record) [Equalizer amplifier] Open-circuit voltage gain Input noise voltage [Line Amplifier] Voltage gain input) Voltage gain (LINE input) Voltage gain (TUNER input) Harmonic distortion Output noise voltage Maximum output voltage Output voltage when operating effect Total harmonic distortion when operating [Record Amplifier] Voltage gain Harmonic distortion Maximum output voltage [REC/EE Switching Circuit] Record mode hold voltage mode hold voltage [Muting Circuit] state hold voltage state hold voltage Muting attenuation (PB, LINE. TUNER) [PB, LINE. TUNER Switching Circuit] mode hold voltage LINE mode hold voltage TUNER mode hold voltage [EP. Switching Circuit] mode hold voltage mode hold voltage mode hold voltage [Switching Circuit] resistance input voltage [Record Bias Automatic Adjustment Circuit] Record bias current output control range RON2 VIN2 65°C, (sin), voltage voltage voltage voltage voltage voltage VMON VMOFF voltage voltage voltage voltage VGCR THDR VOMR -6dBV -6dBV 13.5 14.0 0.05 14.5 Vrms VGLP VGLL VGLT THDL VNOL VOML THDA -6dBV -6dBV -6dBV -6dBV audio filter -25dBV -25dBV -5dBV -25dBV 20.1 20.1 20.1 20.6 20.6 20.6 0.05 0.05 21.1 21.1 21.1 Vrms VGOE VNIE -6dBV audio filter 58.4 64.4 µVrms Symbol ICCE ICCP ICCR signal signal signal Conditions Ratings 10.0 11.2 12.5 14.0 12.0 15.0 16.8 14.4 Unit
5642-2/11
LA7289 Test Circuit
5642-3/11
LA7289 Switching Operations
Test item (signal) ICCE ICCP ICCR VGOE VNIE VGLP, THDL, VOML VGLL VGLT VNOL VOA, ALC, THDA VGCR, THDR, VOMR Input VIN1 VIN2 VIN4 VIN3 VIN3 VIN5 VIN1 VIN4 VIN3 Measurement
Head Coil Specifications Application circuit (Series erase head type) Head Head Head kHz) kHz) kHz)
Oscillator coil test number: 15419A, Model 7QM3
Line type Total windings 2UEW-0.09 2UEW-0.09 2UEW-0.09 176T 2UEW-0.09
Application circuit (Parallel erase head type) Head Head Head kHz) kHz) kHz)
Oscillator coil test number: 15415A, Model 7QM3
Line type Total windings 2UEW-0.10 2UEW-0.10 2UEW-0.10 104T 2UEW-0.10
more information contact: Tokyo Parts Industries Co., Ltd. Telephone: +81-270-25-1191
5642-4/11
LA7289 Application circuit (Series erase head type)
5642-5/11
LA7289 Application Circuit (Parallel erase head type)
5642-6/11
LA7289 Block Diagram
Functions
Function Record bias automatic control output Function description playback Record Control voltage Internal circuit
A06818
Head switch (high voltage)
Playback Record, resistance (typical) Withstand voltage when kHz)
Ground used head switching circuit amplifier.
amplifier input
Inputs playback from head with input impedance (typical).
A06819
Continued next page.
5642-7/11
LA7289
Continued from preceding page. Function Function description Negative feedback amplifier. Internal circuit
A06820
switch
Switches playback amplifier high-frequency voltage gain. resistance (typical)
A06821
amplifier output
Output impedance (typical)
A06822
Line amplifier playback input
Inputs playback signal from amplifier. Since high input impedance ceramic capacitor used coupling capacitor.
A06823
FILTER
Detection performed using capacitor connected between this ground. attack recovery times determined time constant circuit connected this pin.
A06824
Line amplifier tuner input
Inputs record signal.
A06826
reference input resistors amplifier gain fixed 21.0 Since high input impedance ceramic capacitor used coupling capacitor.
A06825
Ground circuit blocks except head switching circuit amplifier. Continued next page.
5642-8/11
LA7289
Continued from preceding page. Function Line amplifier line input Function description Inputs record signals. Internal circuit
A06828
reference input resistors amplifier gain fixed 21.0 Since high input impedance ceramic capacitor used coupling capacitor. detector input
A06827
A06830
Inputs line amplifier output signal. level determined resistors
A06829
Line amplifier output
Output impedance (typical)
A06831
Record amplifier input
Inputs record signal from line amplifier.
A06833
record current resistors Since high input impedance ceramic capacitor used coupling capacitor. EP/LP/SP control voltage mode mode mode. Switch state numbers:
A06834 A06832
PB/LINE/TUNER control
voltage mode LINE mode TUNER mode.
A06835
Continued next page.
5642-9/11
LA7289
Continued from preceding page. Function Muting control Function description When voltage Muting will Muting will off. Internal circuit
A06836
Record/EE control
When voltage Record mode mode
A06837
Power supply (VCC) Ripple filter
12.5 Connect electrolytic capacitor between this ground remove ripple from power supply.
Power supply circuit blocks
A06838
Record amplifier output
Output impedance (typical)
A06839
Record bias automatic control input playback switch
playback modes Record mode resistance (typical)
A06840
switch
This switches high-band peaking frequency record playback modes.
resistance: (typical)
A06841
5642-10/11
LA7289
products described contained herein intended surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment like, failure which directly indirectly cause injury, death property loss. Anyone purchasing products described contained herein above-mentioned shall: Accept full responsibility indemnify defend SANYO ELECTRIC CO., LTD., affiliates, subsidiaries distributors their officers employees, jointly severally, against claims litigation damages, cost expenses associated with such use: impose responsibility fault negligence which cited such claim litigation SANYO ELECTRIC CO., LTD., affiliates, subsidiaries distributors their officers employees jointly severally. Information (including circuit diagrams circuit parameters) herein example only; guaranteed volume production. SANYO believes information herein accurate reliable, guarantees made implied regarding infringements intellectual property rights other rights third parties. This catalog provides information April, 1997. Specifications information herein subject change without notice. 5642-11/11

Monolithic Linear LA7289 Audio Signal Record Playback Proces

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