Prescaler DN8522S-A Prescaler IC for CATV ■ Overview 1 8 5.0±0.3 0.6±0.3 0.4±0.25 Unit: mm The DN8522S-A is 1.7 GHz prescaler IC for CATV. It is made up of ECL flip-flop circuit which can be switched to the dividing ratios of 64, 128 or 256. 0.1±0.1 ■ Applications • Television, VCR 4 5 0.3 4.2±0.3 6.5±0.3 1.5±0.2 • Power dissipation: 5 V, 26 mA • To be switched to the dividing ratios of 64, 128 and 256 • ECL-level output 0.15 0.65 1.27 ■ Features SOP008-P-0225A ■ Block Diagram VCC Input 1 1/2 1/2 4 Output GND 5 Buff. amp. GND M2 6 1/2 1/4 Switch 1/8 3 1/2 1/2 M1 Ref. 8 2 V CC 1/2 1 DN8522S-A Prescaler ■ Pin Descriptions Pin No. Description 1 Input pin 2 Supply voltage pin 3 Dividing ratio select pin: M1 4 Output pin 5 GND pin 6 Dividing ratio select pin: M2 7 N.C. 8 Bias (Ref.) pin ■ Absolute Maximum Ratings Parameter Symbol Rating Unit VCC 6.0 V ICC 40 mA PD 160 mW Topr −20 to +80 °C Tstg −55 to +125 °C Supply voltage Supply current Power dissipation *2 Operating ambient temperature Storage temperature *1 *1 Note) 1. *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: The power dissipation shown is for the IC package at Ta = 80°C ■ Recommended Operating Range Parameter Symbol Range Unit VCC 4.5 to 5.5 V Supply voltage ■ Electrical Characteristics at Ta = 25°C Parameter 2 Symbol Conditions Min Typ Max Unit 4.5 5.0 5.5 V Supply voltage VCC Supply current ICC VCC = 5 V 26 36 mA Input frequency fIN VCC = 5.0 V, VIN = −15 dBm 0.6 1.7 GHz Input signal level VIN1 VCC = 5.0 V, Ta = −20°C to 80°C fIN = 0.6 GHz to 1.7 GHz −15 +3 dBm Output amplitude VO VCC = 5 V, fIN = 1.7 GHz VIN = −10 dBm, divided by 64 0.6 1.0 1.6 V[p-p] High-level input voltage VIH Dividing ratio select voltage pin 3, pin 6 0.7 × VCC V Low-level input voltage VIL Dividing ratio select voltage pin 3, pin 6 0.2 × VCC V Prescaler DN8522S-A ■ Application Circuit Example Input 1 0.001 µF Ref. 8 2 1/2 1/2 1/2 VCC 5 V 1/2 0.001 µF 4 Output 5 Buff. amp. GND M2 M1 6 1/2 1/4 Switch 1/8 3 1/2 Dividing ratio select pin: M1/M2 settings and related dividing ratios are as follows: High = VCC , Low = GND Pin 3 M1 Pin 6 M2 Dividing ratio Low Low 1/256 Low High 1/128 High Low High High 1/64 3 Request for your special attention and precautions in using the technical information and semiconductors described in this material (1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. (2) The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. 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