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BA7182 Datasheet

  • BA7182

  • 2-channel PRE / REC amplifier with auto-tracking interface

  • 101.70KB

  • 9頁

  • ROHM

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Video ICs
2-channel PRE / REC amplifier with
auto-tracking interface
BA7182AS
The BA7182AS is a PRE / REC amplifier developed for use in video cassette recorders. It has been designed for use
in two-head decks and features built-in FB damping, two preamplifiers, a chroma output amplifier, an FM output
amplifier (with AGC), an envelope detector, a constant-current BTL-drive REC amplifier (with AGC) and built-in chan-
nel and REC / PB switches on a single monolithic IC.
鈥?/div>
Applications
VCRs
鈥?/div>
Features amplifier has a total gain of 59dB
1) The playback
(Typ.), and has a low-noise preamplifier. Designed
for VHS-band operation with low external parts
count. The IC has 2 circuits for 2-head VCR applica-
tions.
2) Two playback output systems (throgh output and
AGC output). The AGC output level is 270mV
P-P
(Typ.) ; suitable for FM brightness signal output.
3) Auto-tracking interface for automated tracking
adjustment. An integrate and hold detector is used
to reduce the load on the microcontroller.
4) The recording amplifier uses constant-current BLT
drive that handles load variations (i.e. headimped-
ance) well, and gives stable recording characteris-
tics. A single circuit is provided for 2-head VCR use.
5) Built-in recording level AGC means adjustment of
FM recording current is not necessary.
6) Head switches for 2-channel PRE / REC system
provided.
7) Operates off a single 5V power supply, with low
power dissipation.
鈥?/div>
Absolute maximum ratings (Ta = 25擄C)
Parameter
Applied voltage
Power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
Pd
Topr
Tstg
Limits
7.0
1100
鈭?/div>
鈥?20 ~ + 75
鈥?55 ~ + 125
Unit
V
mW
擄C
擄C
鈭?/div>
Reduced by 11mW for each increase in Ta of 1擄C over 25擄C (free air).
鈥?/div>
Recommended operating conditions (Ta = 25擄C)
Parameter
Playback / recording
Symbol
V
CC
Min.
4.5
Typ.
5.0
Max.
5.5
Unit
V
Conditions
12pin
Not designed for radiation resistance.
1

BA7182相關(guān)型號PDF文件下載

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  • 英文版
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    Consumer IC
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    SECAM chroma signal processor for VHS VCRs
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    Electronic viewfinder driver
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    Electronic viewfinder driver
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  • 英文版
    2-channel PRE / REC amplifier with auto-tracking interface
    ROHM
  • 英文版
    2-channel PRE / REC amplifier with auto-tracking interface
    ROHM [Rohm...
  • 英文版
    2-channel PRE / REC amplifier with auto-tracking interface
    ROHM
  • 英文版
    2-channel PRE / REC amplifier with auto-tracking interface
    ROHM [Rohm...
  • 英文版
    2-channel PRE / REC amplifier with auto-tracking interface
    ROHM
  • 英文版
    2-channel PRE / REC amplifier with auto-tracking interface
    ROHM [Rohm...
  • 英文版
    4-channel PRE / REC amplifier with auto-tracking interface
    ROHM
  • 英文版
    4-channel PRE / REC amplifier with auto-tracking interface
    ROHM [Rohm...
  • 英文版
    SECAM chroma signal processor for VHS VCRs
    ROHM
  • 英文版
    SECAM chroma signal processor for VHS VCRs
    ROHM [Rohm...

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