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Número de pieza | TA8721ASN | |
Descripción | DUAL SIF SYSTEM FOR TV | |
Fabricantes | Toshiba Semiconductor | |
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No Preview Available ! TA8721ASN
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8721ASN
DUAL SIF SYSTEM FOR TV
FEATURES
l Two channel SIF circuit (The 2ch demodulation circuit can be
configured in combination with the TA8712N or TA8796N.)
l Three stage limiter amplifier
l Quadrature type detection circuit
l No-adjustment type FM detector circuit by ceramic
discriminator
BLOCK DIAGRAM
Weight : 0.71g (Typ.)
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.
2001-02-06 1/9
1 page TA8721ASN
AC CHARACTERISTICS
(When using the specified coil unless otherwise specified, VCC=9V, Ta=25°C)
CHARACTERISTIC
Audio Frequency Output
Level
(Note 1)
Audio Frequency
Distortion Rate (Note 2)
Limiting Sensitivity
(Note 3)
AMR
(Note 4)
Audio Frequency
Bandwidth
(Note 5)
S / N Ratio
(Note 6)
Crosstalk Between Sound
Outputs
(Note 7)
Limiter Input Resistance
(Note 8)
SYMBOL
VOD1
VOD2
THD1
THD2
VLIM1
VLIM2
AMR1
AMR2
AFBW1
AFBW2
S / N1
S / N2
CR1
CR2
TEST
CIR-
CUIT
2
2
2
2
2
2
2
TEST CONDITION
fo=4.5MHz, Vi=100dBµV
fo=4.724MHz, Vi=100dBµV
fo=4.5MHz
fo=4.724MHz
When output VOD1 is −3dB.
When output VOD2 is −3dB.
fo=4.5MHz, AM=30%
fo=4.724MHz, AM=30%
−3dB bandwidth
−3dB bandwidth
fo=4.5MHz,
CW against FM 25kHz / dev
fo=4.724MHz,
CW against FM 25kHz / dev
SIF1 fo=4.5MHz, fm=400Hz
SIF2 fo=4.724MHz, CW
SIF1 fo=4.5MHz, CW
SIF2 fo=4.724MHz, fm=400Hz
Ri1, Ri2
2
―
MIN. TYP.
350 500
350 500
― 0.2
― 0.2
――
――
40 50
40 50
±70 ―
±70 ―
60 ―
60 ―
60 ―
60 ―
0.75 1.0
MAX. UNIT
700
700
mVrms
1.0 %
1.0
50 dBµV
50
― dB
―
― kHz
―
―
dB
―
―
dB
―
1.25 kΩ
TEST CONDITION
Note 1:
Note 2:
Note 3:
Audio Frequency Output Level
Limiter input
VOD1 : fo=4.5MHz, 100dBµV, fm=400Hz, 100% (25kHz / dev) FM modulation
VOD2 : fo=4.724MHz, 100dBµV, fm=400Hz, 100% (25kHz / dev) FM modulation
After the above input, measure the output level of sound output.
Audio Frequency Distortion Rate
Measure the distortion rate of sound output by distortion meter under the condition of Note 1.
Limiting Sensitivity
Limiter input
VLIM1 : fo=4.5MHz, variable level, fm=400Hz, 100% (25kHz / dev) FM modulation
VLIM2 : fo=4.724MHz, variable level, fm=400Hz, 100% (25kHz / dev) FM modulation
After the above input, measure the output level of sound output. Measure the input level of Note 1
output level at −3dB.
2001-02-06 5/9
5 Page |
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PDF Descargar | [ Datasheet TA8721ASN.PDF ] |
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TA8721ASN | DUAL SIF SYSTEM FOR TV | Toshiba Semiconductor |
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