MC12079 Datasheet PDF - Motorola

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MC12079
Motorola

Part Number MC12079
Description MECL PLL COMPONENTS 64/128/256 PRESCALER
Page 4 Pages


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2.8 GHz Prescaler
The MC12079 is a single modulus divide by 64, 128, 256 prescaler for low
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
÷64, ÷128, or ÷256.
An external load resistor is required to terminate the output. A 1.2 k
resistor is recommended to achieve a 1.6 Vpp 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 Vout
specification for various divide ratios at 2.8 GHz input frequency.
2.8 GHz Toggle Frequency
Supply Voltage 4.5 to 5.5 V
Low Power 9mA Typical at VCC = 5.0 V
Operating Temperature Range of –40 to 85°C
FUNCTIONAL TABLE
SW1
SW2
HH
HL
LH
LL
NOTE: SW1 & SW2: H = VCC, L = Open.
Divide Ratio
64
128
128
256
MAXIMUM RATINGS
Characteristic
Power Supply Voltage, Pin 2
Operating Temperature Range
Storage Temperature Range
Maximum Output Current, Pin 4
NOTE: ESD data available upon request.
Symbol
VCC
TA
Tstg
IO
Range
–0.5 to 7.0
–40 to 85
–65 to 150
4.0
Unit
Vdc
°C
°C
mA
MC12079
MECL PLL COMPONENTS
÷64/128/256 PRESCALER
SEMICONDUCTOR
TECHNICAL DATA
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
PIN CONNECTIONS
IN 1
VCC 2
SW1 3
OUT 4
8 IN
7 NC
6 SW2
5 Gnd
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC12079D
TA = – 40° to +85°C
MC12079P
SO–8
Plastic
© Motorola, Inc. 1997
Rev 3



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MC12079
ELECTRICAL CHARACTERISTICS (VCC = 4.5 to 5.5 V; TA = –40 to 85°C, unless otherwise noted.)
Parameter
Symbol Min Typ
Toggle Frequency (Sine Wave)
ft 0.25 3.4
Supply Current Output (Pin 2)
Input Voltage Sensitivity
250–500 MHz
500–2800 MHz
ICC – 9.0
Vin 400 –
100 –
Divide Ratio Control Input High (SW)
Divide Ratio Control Input Low (SW)
Output Voltage Swing
(CL = 12 pF; RL = 1.2 k; IO = 2.7 mA)1
(CL = 12 pF; RL = 2.2 k; IO = 1.5 mA)2
(CL = 12 pF; RL = 3.9 k; IO = 0.85 mA)3
NOTES: 1. Divide ratio of ÷64 at 2.8 GHz.
2. Divide ratio of ÷128 at 2.8 GHz.
3. Divide ratio of ÷256 at 2.8 GHz.
VIH
VIL
Vout
VCC
Open
1.0
VCC
Open
1.6
Max
2.8
11.5
1000
1000
VCC
Open
Unit
GHz
mA
mVpp
V
Vpp
Figure 1. Logic Diagram (MC12079)
D QB
DQ
D QB
In
In
CQ
C QB
CQ
DQ
D QB
C QB
CQ
D QB
D QB
D QB
CQ
CQ
CQ
SW2
SW1
Out
SINE WAVE GENERATOR
C1
50
C2
IN
IN
Figure 2. AC Test Circuit
VCC = 4.5 to 5.5 V
C3
VCC
SW1
SW2
OUT
GND
CL
RL
EXTERNAL COMPONENTS
C1 = C2 = 1000 pF
C3 = 0.1 µF
CL = 12 pF (Including Scope and Jig Capacitance)
RL = 1.2 k(for ÷64 at 2.8 GHz)
2 MOTOROLA RF/IF DEVICE DATA



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MC12079
Figure 3. Input Signal Amplitude versus Input Frequency
+15.0
+10.0
+5.0
0
–5.0
–10.0
–15.0
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉOWPÉÉÉÉÉEINRDAÉÉÉÉÉOTIWNGÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
–20.0
–25.0
–30.0
–35.0
–40.0
–45.0
–50.0
0
400 800 1200 1600 2000 2400 2800
FREQUENCY (MHz)
Divide Ratio = 64; VCC = 5.0 V; TA = 25°C
3200
+1257.40
+707.11
+397.64
+223.61
+125.74
+70.71
+39.76
+22.36
+12.57
+7.07
+3.98
+2.24
+1.26
+0.71
3600
Figure 4. Output Amplitude versus Input Frequency
2000
1600
1200
800
400
0
0 400 800 1200 1600 2000 2400 2800 3200 3600
FREQUENCY (MHz)
MOTOROLA RF/IF DEVICE DATA
3



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MC12079
NOTE 2
–T–
SEATING
PLANE
H
85
14
F
–A–
–B–
OUTLINE DIMENSIONS
P SUFFIX
PLASTIC PACKAGE
CASE 626–05
ISSUE K
L
C
J
N
DK
M
G
0.13 (0.005) M T A M B M
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
MILLIMETERS
INCHES
DIM MIN MAX MIN MAX
A 9.40 10.16 0.370 0.400
B 6.10 6.60 0.240 0.260
C 3.94 4.45 0.155 0.175
D 0.38 0.51 0.015 0.020
F 1.02 1.78 0.040 0.070
G 2.54 BSC
0.100 BSC
H 0.76 1.27 0.030 0.050
J 0.20 0.30 0.008 0.012
K 2.92 3.43 0.115 0.135
L 7.62 BSC
0.300 BSC
M ––– 10_ ––– 10_
N 0.76 1.01 0.030 0.040
AD
D SUFFIX
PLASTIC PACKAGE
CASE 751–06
(SO–8)
ISSUE T
C
8
E
1
5
H
4
0.25 M B M
Be
C
h X 45 _
q
A
SEATING
PLANE
A1 B
0.10
0.25 M C B S A S
L
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. DIMENSIONS ARE IN MILLIMETER.
3. DIMENSION D AND E DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS
OF THE B DIMENSION AT MAXIMUM MATERIAL
CONDITION.
MILLIMETERS
DIM MIN MAX
A 1.35 1.75
A1 0.10 0.25
B 0.35 0.49
C 0.19 0.25
D 4.80 5.00
E 3.80 4.00
e 1.27 BSC
H 5.80 6.20
h 0.25 0.50
L 0.40 1.25
q 0_ 7_
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. “Typical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
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and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
How to reach us:
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Mfax is a trademark of Motorola, Inc.
JAPAN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 141,
4–32–1 Nishi–Gotanda, Shagawa–ku, Tokyo, Japan. 03–5487–8488
Customer Focus Center: 1–800–521–6274
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51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
4
MOTOROLA RF/IF DEVICMEC1D2A07T9A/D



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