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PDF TA1267AF Data sheet ( Hoja de datos )
| Número de pieza | TA1267AF | |
| Descripción | MULTISTANDARD PIF/SIF SYNCHRONOUS DEMODULATOR IC | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TA1267AF
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA1267AF
MULTISTANDARD PIF / SIF SYNCHRONOUS DEMODULATOR IC
FEATURES
PIF CIRCUIT
· True synchronous PIF demodulator
· 3-stages gain controlled PIF amplifier
· High speed response PIF AGC detector
· Buzz reducer
· 2 video inputs for selecting sound-carrier traps
· Equalizer for video output
· AFT detector without extra reference circuit
SIF CIRCUIT
· Wide range gain controlled SIF amplifier (control range : 70
dB Typ.)
· Alignment-free PLL-FM demodulator
Weight: 0.27 g (Typ.)
· Selectable 4 2nd-SIF inputs, 2 gain mode audio amplifier (0 dB / 6 dB), and 2 mode de-emphasis circuit (50 µs
/ 75 µs)
000707EBA1
· TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general
can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the
buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and
to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or
damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the
most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling
Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc..
· The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal
equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are
neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or
failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy
control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control
instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document
shall be made at the customer’s own risk.
· The products described in this document are subject to the foreign exchange and foreign trade laws.
· The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by
TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its
use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or
others.
· The information contained herein is subject to change without notice.
2003-02-06 1/23
1 page  
PIN
No.
NAME
FUNCTION
13
6.5 MHz input / RF AGC
delay adj.
6.5 MHz 2nd SIF input.
And this terminal has RF AGC delay
point adjustment function.
100 µA current is outputted from this
terminal. Connect a resister (5.6 kΩ )
and a volume (10 kΩ ) between GND
in series.
These terminals are input of 6.0 MHz
14
6.0 MHz input / AFT defeat
2nd SIF, 5.5 MHz 2nd SIF and 4.5
MHz 2nd SIF.
No.14 terminal has AFT defeat
15 5.5 MHz input /
system SW1
function. If resister is connected
between this terminal and GND, AFT
defeat is active.
16 4.5 MHz input /
system SW2
No.15 and No.16 terminals have
system switch function. The table of
'Condition of No.15 terminal and No.16
terminal' vs 'System' is on next page
17 AF output
Gain of the audio amplifier is selected
0 dB or 6 dB by system switches. This
system absorbs difference of the SIF's
deviations (25 kHz or 50 kHz at 100%
modulation).
Output resistance of this terminal is
selected 5 kΩ or 7.5 kΩ by system
switches. So connect a capacitor
between GND, the time-constant of the
deemphasis is changed by system
switches.
18
19
VCO tank
Connect tank for VCO between these
terminals.
TA1267AF
INTERFACE CIRCUIT
2003-02-06 5/23
5 Page 
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet TA1267AF.PDF ] | |
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