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LA7688

Features: • PLL detector • Buzz canceller• PLL detector • Audio switch• Built-in trap • Built-in DL• Aperture control• Video switch (SVO output)• Black expansion• PAL/NT • Base band processing (adjustment free)• Built-in bandp...

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SeekIC No. : 004390752 Detail

LA7688: Features: • PLL detector • Buzz canceller• PLL detector • Audio switch• Built-in trap • Built-in DL• Aperture control• Video switch (SVO output)•...

LA7688 Data Sheet

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Part Number:
LA7688
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/1/11

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Product Details

Description



Features:

• PLL detector
• Buzz canceller
• PLL detector
• Audio switch
• Built-in trap
• Built-in DL
• Aperture control
• Video switch (SVO output)
• Black expansion
• PAL/NT
• Base band processing (adjustment free)
• Built-in bandpass filter
• Analog OSD
• Automatic 50/60 Hz discrimination
• Fixed vertical size • Double AFC
• Built-in sync separator circuit
• Sandcastle pulse (for the 1H delay line)
• fsc output (for SECAM systems)
• Primary color output


Specifications

Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V40 max   9 V
V45 max   9 V
Maximum supply current I24 max   16 mA
FBP input current I26 max   5 mA
I32 max   10 mA
FBP input voltage I26 min   -5 V
Allowable power dissipation Pd max Ta 65°C When mounted on a printed circuit board* 1.3 W
Operating temperature Topr   10 to +65 °C
Storage temperature Tstg   55 to +150 °C

Note : * Printed circuit board size: 83 *86*1.5 mm, material: Bakelite


Description

The LA7688 integrates VIF, SIF, video, chrominance, and deflection processing circuits for PAL/NTSC format TV sets on a single chip and is provided in a 52-pin shrink package.

The VIF and SIF circuits achieve semi-adjustment-free operation, and are adjustment-free except for the VCO coil and the RF AGC circuit. The chrominance circuit can be made adjustment-free by using the LC89950 1H delay line IC. All the signal processing required for a multi-format color TV can be implemented by combining this product with the LA7642 SECAM decoder IC.




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