MC12079D Motorola, MC12079D Datasheet

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MC12079D

Manufacturer Part Number
MC12079D
Description
2.8 GHz prescaler
Manufacturer
Motorola
Datasheet

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2.8 GHz Prescaler
power frequency division of a 2.8 GHz (typical) high frequency input signal.
Divide ratio control inputs SW1 and SW2 select the required divide ratio of
resistor is recommended to achieve a 1.6 V pp output swing, when dividing a
1.1 GHz input signal by the minimum divide ratio of 64, assuming a 12 pF
load. Output current can be minimized dependent on conditions such as
output frequency, capacitive load being driven, and output voltage swing
required. Typical values for load resistors are included in the V out
specification for various divide ratios at 2.8 GHz input frequency.
FUNCTIONAL TABLE
NOTE: SW1 & SW2: H = V CC , L = Open.
MAXIMUM RATINGS
NOTE: ESD data available upon request.
64, 128, or 256.
Power Supply Voltage, Pin 2
Operating Temperature Range
Storage Temperature Range
Maximum Output Current, Pin 4
The MC12079 is a single modulus divide by 64, 128, 256 prescaler for low
An external load resistor is required to terminate the output. A 1.2 k
2.8 GHz Toggle Frequency
Supply Voltage 4.5 to 5.5 V
Low Power 9mA Typical at V CC = 5.0 V
Operating Temperature Range of –40 to 85 C
SW1
H
H
L
L
Characteristic
SW2
H
H
L
L
Symbol
V CC
T stg
T A
I O
Divide Ratio
128
128
256
–0.5 to 7.0
–65 to 150
64
–40 to 85
Range
4.0
Unit
Vdc
mA
C
C
MC12079D
MC12079P
Motorola, Inc. 1997
Device
MECL PLL COMPONENTS
64/128/256 PRESCALER
ORDERING INFORMATION
MC12079
PIN CONNECTIONS
SEMICONDUCTOR
Temperature Range
T A = – 40 to +85 C
TECHNICAL DATA
Order this document by MC12079/D
SW1
V CC
OUT
PLASTIC PACKAGE
PLASTIC PACKAGE
IN
Operating
8
D SUFFIX
CASE 751
CASE 626
1
2
3
4
P SUFFIX
(Top View)
8
(SO–8)
1
1
8
7
6
5
IN
NC
SW2
Gnd
Package
Plastic
SO–8
Rev 3

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MC12079D Summary of contents

Page 1

... Range Unit V CC –0.5 to 7.0 Vdc T A – stg –65 to 150 4.0 mA Device MC12079D MC12079P Motorola, Inc. 1997 Order this document by MC12079/D MC12079 MECL PLL COMPONENTS 64/128/256 PRESCALER SEMICONDUCTOR TECHNICAL DATA SUFFIX PLASTIC PACKAGE CASE 751 (SO–8) 8 ...

Page 2

... GHz – 9.0 11.5 mA 400 – 1000 mVpp 100 – 1000 Open Open Open – 1.0 1.6 – Out EXTERNAL COMPONENTS 1000 0 (Including Scope and Jig Capacitance 1.2 k (for 64 at 2.8 GHz) MOTOROLA RF/IF DEVICE DATA ...

Page 3

... Figure 4. Output Amplitude versus Input Frequency 0 400 800 MOTOROLA RF/IF DEVICE DATA MC12079 OPERATING WINDOW 1200 1600 2000 2400 FREQUENCY (MHz) Divide Ratio = 64 5 1200 1600 2000 2400 FREQUENCY (MHz) +1257 ...

Page 4

... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

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