TD7627FN
TOSHIBA BIPOLAR DIGITAL INTEGRATED CIRCUIT
SILICON MONOLITHIC
TENTATIVE
TD7627FN
2
3-WIRE AND I C BUS SYSTEM, 2.7 GHz DIRECT TWO MODULUS-TYPE FREQUENCY
SYNTHESIZER FOR CATV
The TD7627FN can be combined with a micro CPU to create a
highly functional frequency synthesizer. The control data
2
conforms to 3-wire bus and standard I C bus formats. BUS-SW
can be used to easily switch for easy tuner system set-up.
FEATURES
= Direct two modulus-type frequency synthesizer
2
= Standard I C bus format control with built-in read mode
= 3-wire bus 27-bit format control
= 4-bit bandswitch drive transistor
2
= 5-level A / D converter (when I C bus selected)
Weight: 0.07 g (Typ.)
= Frequency step : 50 kHz, 62.5 kHz, 250 kHz, and 333.3 kHz
(at 4 MHz X’tal used)
= Phase lock detector
= Various function settings via program data
= Four address settings via address selector (when I C bus selected)
2
= Power on reset circuit
= Flat, compact package
:
SSOP16 (0.65 mm pitch)
= Power on reset operation condition
Bandswitch register 1 to 4
:
:
:
OFF
Tuning amplifier
ON
Tuning Voltage output (Vt)
High Level
Charge-pump output current : ±200 µA
Phase comparator reference frequency divider ratio : 1 / 80
Note: These devices are easy to be damaged by high static voltage or electric fields.
In regards to this, please handle with care.
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.
2001-03-01 1/19
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