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PDF TA2057N Data sheet ( Hoja de datos )
| Número de pieza | TA2057N | |
| Descripción | AM/FM IF+FM ST DET (FOR DIGITAL TUNING SYSTEM) | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA2057N
AM / FM IF + FM St DET (for digital tuning system)
TA2057N
TA2057N is the AM / FM IF + FM St DET system IC, which is
designed for DTS radios.
This IC is included many functions and these can be used for
digital tuning system with IF counter.
Features
· Suitable for combination with digital tuning system which has
IF counter.
· One terminal type AM / FM IF count output (auto stop signal)
for IF counter of digitl tuning system.
· Built−in mute circuit for IF count output.
Weight: 1.2g (typ.)
· Adjustable for IF count output sensitivity by external resistance of pin(2) (AM), and pin(3) (FM).
· For adopting ceramic discriminator and ceramic resonator, it is not necessary to adjust the FM quad detector
circuit and FM st DET vco circuit.
· Built−in AM local oscillator buffer output circuit.
· Built−in AM IF buffer output circuit for AM stereo.
· Operating supply voltage range (Ta = 25°C): VCC = 3.5~14V
※Handle with care to prevent devices from deteriorations by static electricity.
1 2002-10-30
1 page  
Pin
No. Characteristic
10 Tun LED
11 St LED
12 R-out
13 L-out
14 VCO
Internal Circuit
TA2057N
DC Voltage (V)
FM AM
――
――
1.4 1.4
1.4 1.4
4.3 4.3
LPF2
15
・LPF terminal for synchronous detector
・VCO stop terminal
V15 = GND →VCO stop
3.6 3.6
5 2002-10-30
5 Page 
6. FM / AM switch and forced monaural switch
· FM / AM switchover and stereo / forced monaural
switchover are done by pin(16) and pin(15).
· FM / AM switch (pin(16) )
V16: Low (active low, VTH = 1.0V (typ.) →AM
V16: Open →FM
· Stereo / forced monaural switch (pin(15) )
V15: Low (active low, VTH = 1.0V (typ.)
→Forced manaural
V15: Open →Stereo
TA2057N
11 2002-10-30
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet TA2057N.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TA2057 | AM/FM IF+FM ST DET (FOR DIGITAL TUNING SYSTEM) | Toshiba |
| TA2057F | AM/FM IF+FM ST DET (FOR DIGITAL TUNING SYSTEM) | Toshiba |
| TA2057N | AM/FM IF+FM ST DET (FOR DIGITAL TUNING SYSTEM) | Toshiba |
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