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TA2154AFN Datasheet

  • TA2154AFN

  • 1.5 V 1 Chip Tuner IC (for Digital Tuning System)

  • 165.44KB

  • 13頁

  • TOSHIBA

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TA2154AFN
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA2154AFN
1.5 V 1 Chip Tuner IC (for Digital Tuning System)
TA2154AFN is developed for 1.5 V headphone stereos. It
incorporates all the functions of an FM/TV front end, AM/FM IF,
and FM multiplex.
The IC can be used for IF count digital tuning systems. Since
the IC divides the buffer output frequency by 16 while
suppressing the FM/TV local oscillation level, the IC can suppress
unnecessary emission, facilitating conformance to the new FCC
specifications (part 15).
Features
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FM/TV local oscillator level is low (Built-in auto level control
circuit)
Suitable for combination with digital tuning system, which is
included IF counter.
One terminal type AM/FM IF count output for IF counter of digital tuning system.
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AM: 450 kHz
FM: 10.7 MHz
Weight: 0.17 g (typ.)
One terminal type FM/TV local oscillator.
Local oscillator buffer output terminal shared by AM, FM and TV
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AM: 1/1
FM: 1/32
TV: 1/8
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For adopting ceramic discriminator, it is not necessary to adjust the FM quad detector circuit.
Built-in FM MPX VCO circuit.
Low supply current (V
CC
= 1.2 V, Ta = 25擄C)
I
ccq
(AM) = 5.0 mA (typ.)
I
ccq
(FM) = 13.0 mA (typ.)
I
ccq
(TV) = 13.5 mA (typ.)
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Operating supply voltage: V
CC
= 1.0~2.2 V (Ta = 25擄C)
Monaural operating supply voltage: V
CC
= 0.95~2.2 V (Ta = 25擄C)
1
2002-10-21

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