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MC12078

Part Number	MC12078
Manufacturer	Motorola
Published	Apr 26, 2005
Description	MECL PLL COMPONENTS 256 PRESCALER
Detailed Description	MOTOROLA SEMICONDUCTOR TECHNICAL DATA 1.3GHz Prescaler The MC12
Datasheet	MC12078 PDF File

Overview

MOTOROLA SEMICONDUCTOR TECHNICAL DATA 1.
3GHz Prescaler The MC12078 is a divide by 256 prescaler.
Typical frequency synthesis applications include elctronically tuned TV/CATV and communication systems as well as instrumentation.
An internal preamplifier is included which isolates the differential inputs and provides gain for the input signal.
Differential PECL outputs are provided.
MC12078 MECL PLL COMPONENTS ÷256 PRESCALER • • • • • • • 1.
3GHz Toggle Frequency Operating Supply Voltage of 4.
5 to 5.
5V Low–Power 28mA Typical at VCC = 5.
0V Operating Temperature Range of 0°C to +85°C High Input Sensitivity 800mV Minimum Peak–to–Peak Output Swing Differential PECL Outputs DESIGN GUIDE Criteria Internal Gate Count* Internal Gate Propagation Delay Internal Gate Power Dissipation Speed Power Product * Equivalent to a two–input NAND gate Value 62 250 10 2.
5 Unit ea ps mW pJ D SUFFIX 8–LEAD PLASTIC SOIC PACKAGE CASE 751–05 P SUFFIX 8–LEAD PLASTIC PACKAGE CASE 626–05 MAXIMUM RATINGS Symbol VCC TA Tstg Characteristic Power Supply Voltage Operating Temperature Range Storage Temperature Range Range 7.
0 0 to +85 –65 to +175 Unit Vdc °C °C Pinout: 8–Lead Plastic (Top View) VCC 8 7 Output 6 NC 5 ELECTRICAL CHARACTERISTICS (VCC = 4.
5 to 5.
5V; TA = 0 to +85°C) Symbol fmax1 fmin ICC Vout Vin min Characteristic Toggle Frequency (Sine Wave Input) Supply Current at 5.
5V Output Voltage (Load =10pF) Input Voltage 90MHz Sensitivity 150–1100MHz 1.
3GHz Input 90–500MHz Overload 500–1300MHz 400 400 0.
8 Min 1.
3 Typ* 1.
6 90 28 1.
2 10 4.
0 7.
0 20 10 20 35 Max Unit GHz MHz mA VPP mVrms 1 NC 2 Input 3 4 GND Vin max mVrms * Typical measured at +25°C, 5.
0V 1.
See Figure 1 7/93 © Motorola, Inc.
1996 1 REV 1 MC12078 PRESCALER BLOCK DIAGRAM VCC 8 625Ω 625Ω Output 7 6 ÷256 2 0.
001µF 3 0.
001µF 4 GND Signal Input 15 10 5 0 –5 –10 INPUT –15 – 20 – 25 AMPLITUDE (dBm) – 30 – 35 – 40 – 45 – 50 SPECIFICATION ROLL OFF OF H.
P.
GENERATOR 1250 710 400 225 125 71 22.
5 12.
8 4 2.
25 1.
25 0.
...

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