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BH7273KV Datasheet

  • BH7273KV

  • Equalizer and ATF circuit IC for Digital VCRs

  • 13頁

  • ROHM

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Video ICs
Equalizer and ATF circuit IC for
Digital VCRs
BH7273KV
The BH7273KV is an equalizer and ATF circuit IC developed for use with digital video cassettes (DVC). By using this
IC, it is simple to design the filter for the equalizer required for DVD sets. In addition, the ATF circuit detects the pilot
signals and generates error signals.
鈥?/div>
Applications ATFs for digital VCRs
Equalizers and
鈥?/div>
Features the configuring of all pass filters, 1 + D cir-
1) Enables
cuits, and transversal filters (TVF).
2) Built-in VCA, amplifier, buffer, and mixer amplifier.
3) Detects the ATF pilot signal and generates an ATF
error signal.
4) Built-in 1.5MHz LPF, VCA, 465kHz BPF, 697.5kHz
BPF, 25dB amplifier, peak detector, and subtractor.
5) Intermediate frequencies are variable by controlling
the voltages for the 465kHz BPF and 697.5kHz
BPF.
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
鈭?/div>
1000
Unit
V
mW
擄C
擄C
鈥?20 ~ + 65
鈥?55 ~ + 125
鈭?/div>
When mounted on a 70mm
脳
70mm
脳
1.6mm glass epoxy board.
鈭?/div>
Reduced by 10.0mW for each increase in Ta of 1擄C over 25擄C.
鈥?/div>
Recommended operating conditions (Ta = 25擄C)
Parameter
Power supply voltage
Symbol
V
CC
5V
Min.
4.6
Typ.
4.9
Max.
5.2
Unit
V
Conditions
2, 15, 21, 33, 44, 48, 60pin
Not designed for radiation resistance.
1

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